Showing posts with label Household Density. Show all posts
Showing posts with label Household Density. Show all posts

Monday, June 2, 2008

Developing Harper Court: What Evanston Can Teach Hyde Park

posted by chicago pop


Optima Towers, 1580 Sherman Avenue, and Borders Location
13-story, 105 Units, Mixed-Use. Completed 2002.

This blog began with a bit of overheard conversation, so it seems appropriate to continue the tradition.

Back in the day, nearly a decade ago, I was living in a flat in Hyde Park's doppelganger neighborhood -- Rogers Park -- and working up in Evanston. Across the hall was a colleague who was doing the same.
We both confronted Evanston just moments before it began its transformation. "It's a nice town, but it's just kind of boring," said my neighbor, shortly before moving to Wicker Park.

No more.

As most people know, Evanston has reinvented itself. The interesting thing is that what happened in Evanston could happen in Hyde Park.

Now that the Harper Court parcel is finally up for redevelopment, there is potential to develop these assets in a way that helps reverse decades of relative decline in Hyde Park's struggling commercial district. Just like what happened in Evanston.

As of 2005, the benefits of Evanston's approach were measurable. Downtown Evanston has increased the total number of retailers in its central district by 27% since 1997, boosted total retail sales by 11.2% between 2000 and 2003, has added to the housing stock while keeping its parking requirements lower than surrounding suburbs.

As a result of increased business activity, Evanston has been able to lower its taxes to levels not seen since 1971. Though similar values would not accrue directly to Hyde Park, they are indicative of the improved health of the local economy, some portion of which would be captured by the 53rd Street TIF, and, when this expires, by the local school districts.

Sherman Plaza
25 stories, 253 Units, 1,600 Car Parking Garage, Mixed Use, Completed 2006


Evanston as Example of Smart Growth

The Evanston build-out is considered by progressive urban planners, such as those who prepared the EPA report from which much of the data below is taken,* to be a model of successful smart-growth, transit-oriented development (TOD). It is now a case-study used to demonstrate a few things about how to redevelop urban centers around a commercial district well-served by transit -- exactly the situation that describes Hyde Park's Harper Court and east 53rd Street.
  1. It is possible to add density to a district without significantly increasing traffic congestion. This is possible when:
  2. Full advantage is taken of existing transit infrastructure by placing density within walking distance of transit stations, or using innovative transportation solutions to link to transit from further away.
  3. Entertainment and a 24/7 district are the anchors of "downtown" redevelopment.
  4. A successful project will be market-driven and demonstrate close cooperation between multiple actors -- municipal authorities, citizen's groups, master developers, Federal and State funding and regulatory agencies, and merchants. And perhaps most importantly:
  5. There is a market for walkable, high-density urban environments. The long-term trends are shifting towards this type of real estate, despite the current market downturn.**
By 2005, many of the goals of Evanston's nearly two-decades old planning process had been achieved. They included the addition of 2,500 new housing units, 2.5 million square feet of new office space, the addition of a 175 room Hilton Hotel, construction of Evanston's first high rise in 20 years, the building of a new 1,400 space parking garage, and -- at the center of it all -- a new multimodal transportation center at Davis Street, which facilitates 1,477 weekday transfers between CTA, Metra, and Pace riders, and is used by over 1,000,000 transit riders annually.

Davis Street Station
Federally Funded and Completed in 1994
Source: http://www.chicago-l.org/stations/davis.html

Evanston, a fairly affluent inner-ring suburb, nonetheless had to deal with a dying commercial core and rising taxes well into the 1990s. It was able to revive its downtown and improve its financial standing by leveraging its urban assets -- multi-modal transit access, a safe and vibrant 24 hour district supported by high residential density -- to effectively compete with low-density, low-tax suburban municipalities.


Evanston as A Model for Hyde Park: Parallels and Limits

There are a few very large differences between Hyde Park and Evanston that should be noted at the outset. Hyde Park is not a municipality with the power to collect taxes, issue bonds, and fund major public goods like the new Evanston Public Library. And unlike Evanston, Hyde Park is not a gateway to a string of wealthy northern suburbs, but is surrounded by considerably poorer neighborhoods.

But there are real parallels that make it worthwhile to look closely at how Evanston was able to turn itself around, and ask if the same strategies could be replicated in Hyde Park. The parallels can be grouped into the categories of disadvantages and advantages.

Like Evanston, Hyde Park proper has relatively few large lots open for development. This offers a strong incentive to develop for density, to build up where it is difficult to build out. Like Evanston, Hyde Park is moderately isolated from major expressways and airports (unlike certain suburban localities), has suffered from population loss and stagnation, and has experienced severe erosion of its commercial center.

On the positive side, both communities are attractively situated on the shore of Lake Michigan, which has historically been a zone of higher-density development. Both lie at comparable distances from downtown Chicago (Hyde Park is 2 miles closer). Both communities are known for their diversity, though Hyde Park is considerably smaller (Evanston has 74,000 residents to Hyde Park's roughly 50,000). Both communities are well served by north-south heavy rail lines. Although Hyde Park has no CTA rail link within its borders, it does have several heavily used bus routes, and more convenient access to Lake Shore Drive.

Evanston and Hyde Park, of course, both host major private universities, both of which play large supporting roles in the local economies, and both neighborhoods are known for their charming architecture, walkable layout, and notable historic districts.

Finally, although Hyde Park is a city neighborhood and not a revenue-gathering municipality, it is conceivable that the revenue-gathering 53rd Street TIF District, at the direction of a focused and determined 4th Ward alderman, and with the active support and foresight of Chicago planning agencies, could help spark, finance, and manage the multiple partnerships that any significant development centered on Harper Court will require.

Century Theater Complex, 1715 Maple Avenue, with Adjacent Parking Garage


Making Room for the Market, Nudging Smart Growth

Planning for Evanston's downtown renaissance spanned two decades. It drew upon multiple funding sources, and required consistent leadership and community commitment over time. It required accommodation to some conventional market realities, such as the construction of a large and subsidized parking garage for out-of-town visitors, and the use of subsidies to encourage emerging market trends, such as the preference for walkable living environments with easy access to public transportation.

All of this could stand as a model for the redevelopment of Hyde Park's Harper Court.

Further, the example of Evanston should immediately put to rest an either-or vision of development in Hyde Park that argues for either absolute community or absolute market control of what goes on. As for the market, it must certainly "lead" as it did in Evanston and the evolution of the eventual retail and service mix.

But markets are most effective when the goods, services, and instruments of exchange have all been standardized, and investors know exactly what they are getting. The real estate market, for example, knows very well how to finance and build suburban shopping malls and suburban subdivisions. It has much less familiarity with inner-city, mixed-used, transit-oriented projects, and therefore needs encouragement.

On the other side of the either-or, the fear that the University will control development for its own purposes should also be put to rest. The days of Urban Renewal and large Federal block grants administered by the University are gone. The University itself does not have the expertise to pull off urban mixed-use development that is transit oriented, although it is an essential player. Likewise, the "community" alone, however represented, will need to compromise and work together with market-driven actors who need to make a profit.

In urban redevelopment, partnerships are the name of the game. No one actor can go it alone. That means making yourself attractive to at least some developers. We'll see if, given the conspiratorial world-view of many more vocal old timers, this is something that can happen in Hyde Park.


*See Cali Gorewitz and Gloria Ohland, Communicating the Benefits of TOD: The City of Evanston's Transit Oriented Redevelopment and the Hudson-Bergen Light-Rail Transit System [pdf]
**See survey of relevant market research in Christopher B. Leinberger, The Option of Urbanism: Investing in a New American Dream, Chapter 5.

Wednesday, December 12, 2007

Word on 53rd: Put a Mid-Rise at McMobil

posted by chicago pop

In the aftermath of what, by all accounts, including my own, was a smashingly successful community meeting on the future of the 53rd Street TIF District, it seems like a good time to revisit our favorite little stretch of 53rd.

Side Face of a 6-Story Building Behind McMobil Lot
(5220 S. Kenwood)

If you've been reading this blog for awhile, it will come as no surprise to you what we think should happen at the McMobil site on 53rd and Kenwood. We want to see a mixed-use, mid-rise building put right there. Like the buildings of similar height just yards away. Not surprisingly, a group of folks want a building here which allows for more cars, fewer and therefore more expensive units, with none of these preferences based on substantiated arguments as to why a bigger building would be worse.

Mid-Rise, 8-Story Versailles a Block Away from McMobil Site
(5254 S. Dorchester)

In previous posts, we've gone over the reasons why we think a mixed-use mid-rise is a good idea, and in fact fits with the character of the neighborhood. The alpha and omega of this issue -- something which goes against the very core of the NIMBY soul -- is that Hyde Park needs more people. We've gone over the demographics here, and made it clear that the decline in neighborhood retail is linked to the decline in neighborhood population, and not just here but throughout the South Side.

We've also pointed out the research demonstrating that, as household density goes up, auto ownership goes down. That means fewer people actually chose to own cars. That's good for congestion. And the environment. And when retailers decide to locate nearby concentrations of shoppers, that means fewer trips by car are necessary. If NIMBYs don't want a building here, congestion is not going to be a convincing bogeyman.

Hyde Park is in fact full of such buildings, sprinkled liberally among low-rise structures. This is the case on 53rd as well, and a building here would in no way depart from the historic texture or precedent of the street or the neighborhood.

Here are a few examples of other mid-rise buildings amid low-rise housing. Does anyone have any complaints about these towers near the intersection of 56th and Kenwood? Can anyone argue that they contribute to congestion on 56th Street?


Residential Mid- and High-Rise Buildings at Intersection of 56th & Kenwood

After the 53rd Street community visioning meeting this past Saturday, I sense that people are starting to realize this, that the Old-Timer resistance to change may be ebbing. Hyde Park needs more people. It needs new people. And it needs new, modern housing to hold them in sufficient numbers to make streets busier and safer.

When you get a chance to build new housing on a major artery of the neighborhood, if you don't try to match what the neighborhood historically supported, you're perpetuating the suburbanization of the inner city that was the vision of Urban Renewal. It's something a lot of NIMBYs still cling to.

A lot of holes have been ripped into the neighborhood in the last 50 years, and the NIMBY crowd has grown accustomed to them. They like their vacant lots, dead space in public parks, empty streets with anemic urban densities, and marginal retail amenities. And they especially like their free street parking.

But none of those things are fundamentally good for the neighborhood. And there is as yet no good reason that has been offered as to why an 8-10 story building shouldn't go on this spot.

When we get a chance to fill one of those holes, and turn some of these things around, we should make the most of it, and in a big way.

Tuesday, October 16, 2007

Urban Density & Climate Change

posted by chicago pop

Have a neighbor who cringes at the word "density?" Urban planners are always looking for ways to make the concept more appealing to people, especially given the negative connotations associated with early 20th-century slums, immigrant tenements, and everything that Post-War suburbia was supposed to transcend. Visuals are one way around the problem, whether a photograph of a well-liked and dense urban neighborhood, or, as here, a colorful illustration.

So, in honor of Al Gore's 2007 Nobel Peace Prize for his work promoting awareness of climate change, a few very pretty maps illustrating the comparatively mitigating effects of high density urban settlement patterns on greenhouse gas emissions. Courtesy of Chicago's very own Center for Neighborhood Technology, it turns out, not too surprisingly, that city living -- as opposed to the suburban alternative -- is a much more efficient way of life, and generates fewer CO2 emissions per household. Compared to the suburban alternative, it's good for the planet.

Here are two contrasting maps illustrating auto-generated CO2 emissions for the city of Chicago. In the classical view, to the left, cities are shown to emit more aggregate emissions per square mile. If we take the measure of auto-generated CO2 at the household level, however, a very different picture emerges.



The older, denser areas of Chicago emit far less CO2 per household, chiefly due to lower automobile usage. The reverse relation holds in further out, suburban areas, where lower household densities generate greater amounts of greenhouse gas.

The same relation is found in places one might not expect, like Los Angeles, which is becoming increasingly dense overall, and especially in certain areas.


Or here, San Francisco:


It's useful to keep in mind that this has nothing to do with parks or parklands, and that the 19th century notion of parks -- famously expressed by Olmsted -- as the "lungs of the city" here plays no role. Their value in a city is of a different measure, and is important, but does not diminish the importance of urban density as a more highly efficient mode of life.

Thursday, October 4, 2007

Development Beat: Prospects for Retail on Cottage Grove and in Hyde Park

posted by chicago pop

That's just a tease, of course; no one expects Target on Cottage Grove within the next 6 months, 6 years, and some may say we need to wait 6 decades. After all, it took 30 years for Grand Boulevard to lose 52,000 people, about as much time as it took Hyde Park to lose a comparable number.

But there are signs of positive change. As we highlighted back in August, Alderman Preckwinkle is helping to bring an exciting mixed-use development to the corner of Cottage Grove and 47th. And an estimated 10,000 folks are expected to move into the area as it continues to attract middle-class home buyers, and as 3,600 new mixed-income units come on line by 2010 as part of the Chicago Housing Authority's "great transformation."

Some changes, in the right circumstances, can be bracing. Look at Evanston, which only a few years ago had a rather torpid downtown area with little-to-no advantage taken of its excellent and centralized transit infrastructure. It now has a booming downtown commercial district, high-rise residential clustered around METRA and "L" stations, and a combination of local and national, large and small-scale retail. All while preserving its historic, single-family neighborhoods. This took forethought, planning, and a commitment to change.

Similar transformations, though more limited, have occurred around rail hubs in Arlington Heights, and Palatine, both on METRA lines.

Hyde Park is indeed a different species, not being a distinct municipality, cut up into several different political jurisdictions, and like everyone else subject to byzantine City bureaucracy. But it does have a METRA line with multiple stations, and good bus service, and, as many readers of this blog have commented, a fair amount of pent-up demand.

So what's the deal?

A few factors are mentioned in a 2005 interview with Hank Webber, VP of Community Affairs at the U of C: prevalence of relatively small spaces discourages larger retailers, as does the suspicion that a local store would lose out to competition from the Loop, or the growing commercial strip along Roosevelt Road. From a demographic perspective, Hyde Park's high student population is viewed as more or less equivalent to an impoverished community like Grand Boulevard, with 25,000 people living below poverty. Though aggregate buying power is there, both neighborhoods have to work hard to convince retailers that they are viable markets.

A 2005 Urban Lands workshop on redevelopment in Grand Boulevard highlighted Cottage Grove as a key element in any revitalization. One crucial factor: there is land available. Public transportation, as well as under-utilized road capacity, make the area ripe for future commercial development as the local population grows and average household incomes rise. Hyde Park doesn't have this kind of real estate to offer, but it would only benefit from the development of a neighboring community that did.

While Hyde Park will most likely have to piggy-back off of neighboring communities for large scale retail, it's not too soon to think about how to improve the climate for smaller businesses. The participants at the above-mentioned workshop agree that, in any of the lakefront, South Side neighborhoods, there is a shortage of small retail space, but building it out is an expensive proposition that will require subsidy (from TIF funds, for example), and a commitment to providing top grade retail space in a mixed-use project.

We all know that a few of those are set to come on line, or are in the planning stages, and how important they therefore are to advancing Hyde Park to its small retail "tipping point."

"The most important thing a community can do is to set the table," remarked a local developer at the 2005 workshop. The deck is stacked against a lot of South Side neighborhoods, for historical, racial, and other reasons. But this is all the more reason to make it attractive for the small retailer to locate here by building the best quality and most plentiful new space that can be provided, whether in the ground level of a new hotel, the street level of a new residential tower, or by upgrading and expanding existing properties.

Friday, September 28, 2007

How to Chase Small Businesses from Hyde Park in 14 Points

posted by chicago pop


Mystique Boutique's New Location, 1503 S. Michigan


Let's just start with a few facts, gleaned from the most unlikely of places: the "Shopping" feature of the Chicago Tribune's "At Play" section (Thursday, September 27, 2007). It turns out that shopping advisor Ellen Warren, curious to know if the boutique scene in South Loop had yet to blossom, found that it had. And guess what? Several of the distinctive new South Loop boutiques are businesses relocated from Hyde Park.

What does this tell us about small business? 1) Businesses go where the shoppers are. 2) There aren't enough shoppers in Hyde Park. What does this tell us about Hyde Park politics? 1) Chains are not driving the mom and pops out. 2) The mom and pops are leaving the neighborhood because there aren't enough customers.

Why aren't there enough customers? Because Hyde Park NIMBYs don't want to let more people (i.e., shoppers) into the neighborhood -- just ask Jack and Jill. What may have been a tolerable business environment for a Hyde Park businessperson 10 or 15 years ago is now an insane opportunity cost, given the explosion of new households just a few miles to the north. Despite the many and obvious attractions of the Harper Court business dynamo, they are evidently not enough to distract local entrepreneurs interested in turning a profit.

Mystique Boutique, a Hyde Park mainstay for 22 years, moved to 1503 S. Wabash a few years ago, leaving us, as a reminder, the wonderfully prominent vacant storefront at 53rd and Hyde Park Boulevard. Downtown Pets, at 1619 S. Michigan Avenue, is another small business refugee from Hyde Park. The neighborhood obviously generates business talent; but it's talented enough to know not to stick around.

Why is this so? Two letters to this week's Herald (Wednesday, September 26, 2007) allow us to perform a sort of thought experiment, artificially creating the business psycho - ology of the neighborhood, allowing us to see what might discourage small local businesses from putting up a shingle here.

Mr. Gregory S. has a project to preserve and restore the historic Rosenwald Apartments on 47th Street. The problem is, he doesn't know how to pay for it. Solution? Find someone with lots of money to invest in the area. "Allowing it to crumble and decay is absurd and a real waste of what should be a great investment opportunity for someone with capital."

I agree completely. The only problem is, with the exception of Mr. S., not everyone in Hyde Park is equally enthusiastic about promoting "investment opportunities for someone with capital."

Take, for instance, a quite detailed letter from one Mr. William A. Knack, who feels that, "If Harper Court is to be redeveloped, let's do it right." Thereupon follows a 14 point list of stipulations as to just what a Harper Court redevelopment proposal should include, with tips on everything from including senior housing at the site, getting a movie theater back into the old Hyde Park theater, and telling McDonald's to get lost.

Now let's imagine Mr. Knack's 14 points getting written into the Request for Proposals that will be used to solicit Mr. S.'s "someone with capital." Ready, set, go.

I don't hear anything happening ... do you?

Exactly. Who would be crazy enough to take on the redesign of an entire neighborhood for the sake of getting their hands on some iffy real estate in Hyde Park, when the neighborhood can't even retain its home-grown entrepreneurs?

The solution is ultimately very simple. More people need to live in and around Hyde Park. There just aren't enough people here to support local merchants, and the ones who live here now are small spenders, spending below the national average in just about every category (see Lifestyle chart of spending habits by area code).

There are two ways to change this. Either 1) bring in lots more households that earn below or equal to the neighborhood's average per capita income range of approximately $35-40,000 (as of 2000 Census), or 2) bring in fewer people who earn above the neighborhood's $35-40,000 average per capita income. Either way, there need to be more people with pocketbooks. Bringing them in will only add to the diversity that the neighborhood supposedly cherishes.

Wednesday, September 19, 2007

NIMBY's Corner #6: Jack & Jill Sign a Crazy Petition

NIMBY-ism, let us recall, is defined by individuals taking the arbitrary measure of their immediate surroundings as the norm and rule for the rest of us. They usually then sign a petition about it.

What makes NIMBY-watching interesting, aside from it's year-round nature, are the ways in which its advocates present their arguments as common-sensical, when they are usually without much empirical justification.

A case in point is the petition printed in this week's Herald (September 19, 2007), truly a classic of its genre, and intending to convince Alderman Toni Preckwinkle that four strictures should be obeyed in the development of the McMobil site on 53rd Street. The petition is brought to us by a returning guest, Ms. Jill White, who formerly appeared in "Keeping Vacant Lots Vacant," and is now backed up by roaming NIMBY-at-large, Jack Spicer.

In this case, the petitioners are intent to 1) increase congestion by allowing more cars on the block rather than fewer; 2) make the development of new housing less affordable; and 3) bring in fewer new homeowners to pay property taxes to support local schools and shop at local businesses.

Two of the suggested strictures, surprisingly, are reasonable. The remaining two, unfortunately, are ridiculous. Let's take a look at them.

Stricture #1:
The 50 foot maximum height allowance under current law will prevent the excessive blocking of sunlight from nearby homes, keep the increase in population density to a manageable level, and will allow the project to blend well with the existing buildings on either side of the lot. It will also help to keep traffic light, particularly at the risky crosswalk at Kenwood Avenue, and in the alley that connects Kenwood and Kimbark (already frequently blocked by delivery vehicles).
Editorial Comment: All of the stated reasons why the proposed building should be kept to 4 stories/50 feet are arbitrary. The "manageable level" of population density referred to is not specified. Presumably it means not so many as to bug the neighbors who live there now. We've laid out a lot of reasons on this blog why Hyde Park can and should support more household density. This petition makes no reasoned case to the contrary and should not be taken seriously unless it does.

As for the idea of "blending well with the...buildings on either side of the lot," this is laudable in general, but is here being advocated in a partisan sense. Hyde Park is full of 8, 10, 12 story buildings beside 4 stories buildings. Something similar at this site would therefore be quite in keeping with architectural precedents in the neighborhood. Here's a home-made map of where these taller buildings are located in relation to the McMobil site:


Location of Buildings 5 Stories or Higher
in Relation to McMobil Site ("X")

Unless one does some arbitrary height-based jerrymandering, any definition of the "character of the neighborhood" based on a 50 ft. height limit does not unambiguously apply to the McMobil site. It is not justified by the current pattern of land-use in the area.

Stricture #2:

Insisting on at least 1.5 parking spots per residential unit. This will ensure that available street parking -- already strained to the maximum -- will not be further taxed, and that automobile traffic will not increase to a point that it puts the safety of school children crossing the street into Nichols Park at risk.


Editorial Comment: It's rather curious the way school children always pop up in these petitions, threatened by lack of sunlight, cruel and oppressive walls, racing cars, or any number of other NIMBY demons. We would point out, purely as an aside, that congestion tends to slow things down, most likely making it safer for children, and that cars drive faster in lower density areas. But that is beside the point. The insanity here is the idea that parking ratios should be increased to 1.5 spots per unit from the current requirement of 1:1.

In the Code rewrite of 2004, every progressive urban planning organization in the Chicago region pressed very hard to keep this ratio at a maximum of 1 to 1, based on extensive research showing that lower ratios reduce congestion and discourage auto use. Lots of progressive urban planners would have liked to have seen an even lower ratio than that. In fact, the City average is already less than 1:1, as we pointed out in a previous post. So what makes the petitioners think it should be different here, in a dense urban neighborhood served by transit where lots of folks don't even own cars? What NIMBYs don't realize is that these higher ratios guarantee more cars, not less.

The crowning irony of these strictures is that they are very likely to discourage anything from getting built at this site. This shouldn't be surprising, as obstructionism by now is a time-honored local specialty of Hyde Park NIMBYs.

By upping the parking, and downscaling the building, the petitioners have simultaneously increased the developer's costs, and lowered the developer's revenues. Not only this, these strictures discourage what little prospect there already is for moderately affordable new housing, because whatever gets built will be more expensive than it would were the building taller. The developer thus has every reason to build on as much of the lot as is allowed, leaving less room for a back-yard and green space.

So there you have it. As stated above, our petitioners ask us to demand a development that would 1) increase congestion by allowing more cars on the block; 2) drive up the unit selling prices; and 3) bring fewer new shoppers into our neighborhood to support local business and fewer homeowners to pay property taxes to support local schools.

Way to go, Jack and Jill.

Monday, September 17, 2007

Parking, New Housing, and a few NIMBY Myths


Show me a new residential development in Hyde Park, and I'll show you a clutch of NIMBYs with a petition against it.

What are the usual NIMBY objections? Well, once you get beyond the rhetorically powerful but empirically dubious claim that new development poses a "danger to our children," somehow putting new housing on the same threat level as Osama Bin Laden, NIMBY opposition to new development typically boils down to the matter-of-fact issues of parking and density.

A mid-rise or high-rise tower, the NIMBY argument goes, will put more cars on the street, adding to the congestion that already exists. Too many people, plus too many cars, means a deterioration in the quality of life that now exists at an ideal point of equilibrium. From this perspective cities, and places within them like Hyde Park, shouldn't have too many people.

Unfortunately for the NIMBY argument, empirical data on household auto ownership show that NIMBYs often get things backwards. Which is why we need to keep a few simple facts in mind when considering NIMBY objections to new development: 1) that greater density of housing leads to less use of automobiles, not more; and 2) that greater density of housing leads to a correspondingly smaller demand for parking.

Here's how we support these assertions. (All figures below are taken from the 2000 US Census.)

In the City of Chicago, according to the 2000 census, 31% of people got to work without a car. They walked, they biked, they they took the train, bus, or shuttle; or they worked from home. This is something that is not possible in most suburban environments, and directly correlates to higher residential densities, because people's homes and jobs tend to be further apart in suburbs.

In the City of Chicago, the average rate of household auto ownership is 0.9. That is slightly less than 1 car per household. This number means that there are a substantial number of Chicago households that do not own a car. In many Chicago neighborhoods, the number of households that do not own a car is between 30 and 40%. In Hyde Park, it is 48%.

In fact, the greater the residential density, the lower the rate of household auto ownership. This is why high-rise housing needs less than 1:1 parking per unit. This is true not only of Chicago, but has been empirically demonstrated in Los Angeles, San Francisco, places like Metro DC and Arlington County, and, of course, New York City. Similar trends are detectable in the urban cores of most older US cities. The research suggests that it is probably a very general rule of urban life. This becomes clear if we look at comparable rates in nearby suburbs.

In a suburban community like Downers Grove, for example, the number of households without a car is only 9%. In Elmhurst, 6%. In Highland Park, 4%. In Wilmette, 2%. Returning to Hyde Park, the number jumps to 48%.

What You Get with Suburbia

Clearly, we don't need the same ratios of parking per household as are found in the suburbs. And if we build for those ratios, we would guarantee that more cars would be on the street. As far as congestion goes, adding parking is like adding a lane to the expressway: upping supply only ups demand.

The upshot of all this is that, in an urban environment with sufficient non-auto modes of transportation like Chicago -- safe and accessible pedestrian ways, bike lanes, public transportation, cabs, paratransit -- it is possible to build in such a way as to reduce the need to drive, thereby reducing auto congestion. Where people have alternatives -- in dense urban environments -- they drive less. Beyond a certain point, not owning a car actually becomes a feasible option for many city households. I know people who don't own cars. I even know some who don't even drive. You may, too.

What's more, all of these numbers used to be much higher before the onset of suburbanization. The critics of density within city limits have a poor appreciation for local history. Chicago's population has steadily dropped until quite recently, when it began to stabilize due to immigration. Looking at just Hyde Park, we see a drop in population of 34% between 1960 and 2000, or a decline of about 22,000 people.

There are 22,000 fewer people in Hyde Park than there were just 40 some years ago! That is the size of a small town, and similar trends are to be identified across the City and region. Neither Hyde Park nor the City are likely to ever reach these levels again, but this was the population level when Hyde Park was the prosperous, well-served neighborhood that old timers (really old timers) remember. Given this demographic history, the argument that Hyde Park can't support more density simply falls apart.

Hyde Park, like most of Chicago, was built to house far, far more people than it does today. In fact, as an economic and cultural system, Chicago is much more efficient where it has managed to preserve levels of density closer to those of the pre-suburbanization period. More households mean more property taxes, which means a higher tax base, which means better schools and services; it means more transit riders, which means more operating revenue for the CTA, and fewer budget crises; it means more people on the street, which means greater safety; and it means larger markets, which means more and better shopping close by.

Does this add up to a threat to our children? Hardly. Does it add up to more congestion? No. The NIMBY argument is a knee-jerk reaction to change with no basis in fact. The push by neighborhood groups for lower density and more parking means that NIMBYs are pushing suburban conditions in an urban environment, resulting in the worst of both worlds.

What NIMBYs don't point out in their petitions is that the suburban conditions that they long for come with a host of their own problems: greater auto usage, even worse congestion, worsened air quality, higher rates of household spending on transportation, and higher greenhouse gas emissions.

Does this sound like an acceptable vision of the common good?