Writing about cities
Chloe G, a co-lead of Strong Towns Chicago, asked this question at the 2-to-4 flats panel that I moderated earlier this month:
“How do parking mandates affect your businesses?”
“It really just limits the amount of units we can do”, Nick Serra answered.
Learn about reform efforts in Chicago to drop costly parking mandates that raise the cost of housing.
Earlier in March I moderated a panel called “Bringing Back 2-to-4 Flats” at the Metropolitan Planning Council office, interviewing three panelists who are developers and designers for these venerable Chicago housing typology.
Two, three, and four-flats are super common in Chicago, representing about one fifth of the city’s dwelling units. These properties are the most likely to have lower rents and family-sized units, according to the Institute of Housing Studies. But Chicago’s zoning laws severely restrict where they can be built. Changing the zoning laws to allow 2- to 4-flats by right makes it easier to increase the city’s housing supply and grow the economy.
Watch the full panel and Q&A in the video below.
Now that I’ve audited the Chicago building permits for the last four years I can more accurately visualize where new homes were permitted across Chicago’s fifty wards. I was not surprised to see that the 27th Ward carries the team known as City Council, but I was surprised by how big the gap was between the first and second place wards, and the gap between the fewest number of wards where 50 percent of new homes were permitted and the number of wards where the other half were permitted.
In the period 2022-2024…
Those four wards comprise 49.5 percent of new homes permitted, while 46 wards permitted the remaining 50.5 percent. Some of this imbalance is due to how different alderpersons accept new development proposals, and the current zoning capacity of properties in each ward.
Incredibly, when rounding to the tenths place, 24 wards permitted so few new homes in that time period that they round down to 0 percent.
To further illustrate how some wards are where so few new homes are permitted, which may be due to factors beyond the alderperson’s control (local rents not meeting development and construction costs, and racism, to name a couple), consider that six wards permitted fewer than 10 homes each during that three-year period.
While Chicago does not have quotas or goals on how many new homes should be permitted or built either citywide or by ward, the city will maintain a housing shortage if most wards are not facilitating or allowing new housing to be built. The allowance of new housing is heavily influenced by each alderperson’s choices.
The city’s ability to grow and spread the property tax revenue burden fairly depends on new development occurring across the city. This is especially the case in areas where new housing can moderate rising demand housing costs, and transportation infrastructure and amenities are in good supply.
Table 1. New construction homes permitted, by year
| 2022 | 2023 | 2024 | Total |
| 7,574 | 4,498 | 4,360 | 16,432 |
Using Chicago Department of Building permits that are imported to Chicago Cityscape’s Building Permits Browser, I review each new construction permit’s description to count the number of units authorized by that permit. Foundation phases of multi-phase permits and most revision permits are excluded. I do my best to catch projects that change scope between two permits, such as a permit originally issued for a two-flat but changed to a single-family house, or a larger multifamily building losing or gaining units in a subsequent permit.
New construction coach house units are also excluded because they are allowed only in five pilot areas in a subset of wards; view ADU statistics on Chicago Cityscape.
The statistics are also shown in Chicago Cityscape’s building permits analysis table, which is updated daily; look for columns with a heading that says the year and the word “audited”. Data for permits in other years are not yet reviewed and corrected.
This is an imperfect comparison of wards because there was a redrawing of ward boundaries and an election in 2023. This means that some alderpersons are new, and that all alderpersons oversaw new development approvals and the capacity of their zoning map in different areas before and after the remap.
On the flip side, the new ward map also means that the number of inhabitants in each ward was roughly equal at the time of the remap. This supports some level of data normalization (i.e. new homes permitted per capita), which can be done in future analysis.
It’s been nearly two years since I’ve written a blog post about the gut rehab of the two-flat I bought in 2020 so I figured an update was necessary. The status is that I’m working on finalizing a contract with a general contractor and I have a loan application in progress. Read the other two-flat journal posts.
Two-flats – and their cousins the three- and four-flats – are the second most common building type in Chicago. There are approximately 254,800 homes in 2-to-4 flats in Chicago, according to data collected by the Cook County Assessor’s Office. And according to the U.S. Census they make up 27.2 percent of residential structures in Chicago. That’s compared to 25.5 percent detached homes, 3.8 percent attached homes, and 43.5 percent of houses, apartment, and condo buildings with five or more units (2-to-4 flats can also be condo buildings).
Thus it makes sense that there would be a handful of blogs to discuss their renovation.
(Although in the same vein it would probably make sense that there are blogs to discuss renovating condos, and I haven’t come across those.)
That’s my house on the left, captured in December 2024.
I’m glad each one of these is pretty well-organized because it takes a lot of time to peruse a project-oriented blog for specific information if you haven’t read it from the beginning.
Most recently updated is listed first.
Two Flat: Remade
This is the story of a deconversion (to a single detached house) but the renovation process is pretty much the same as restoring two units; gas service remains in the house. By Matt and Sarah, who bought the house circa 2011 and are still renovating it (check out “The Plan” page to learn about their phasing).
Reshaping our Footprint (One Watt at a Time)
Follow our journey of a deep energy retrofit (or energy efficient rehab) on a 100+ year old masonry two flat in Chicago. The goal is to turn the building into a zero-energy home with a sustainable and resource-efficient landscape. Most posts are by Marcus de la Fleur.
Yellow Brick Home
Kim and Scott bought the dilapidated two-flat in 2019 and completed the renovation in 2021 or 2022. Each unit and the outside are detailed in three groups of articles. Yellow Brick Home is the most design-forward of the blogs.
Little Chicago Two Flat
Corey and Emily bought their two-flat in 2021 and did a DIY renovation over the next eight months.
Chicago Two-Flat
Jocelyn and Steve started this blog in 2005! The most posts are in 2005 and 2006 so use the blog archive menu on the right side to go back to that time. Perhaps start by reading this post from March 2005 about removing the drop ceiling.
If you know of another blog about renovating a 2-to-4 flat in Chicago, leave a comment with the link!
Back To The Studs
This a video series by Brad and Sean who have been renovating a Brooklyn brownstone into three units since 2021. I’ve been watching their progress on TikTok, but given the “soft ban” it’s better to look at their YouTube page.
Home electrification case study in North Lawndale
“Through Elevate’s electrification program, contractors installed electric, energy efficient appliances at Ms. McGee’s house in Lawndale. The upgrades included an electric stove, washer and dryer, as well as a heat pump that powers a central heating and cooling system.”
It’s easy to check: is there a ground-level door on the side gangway, or at the rear?
Back in 2018 I wrote about whether “lock off apartments” like these would be allowed by the Chicago zoning code. This was before I realized that so many bungalows have these; they’re so inconspicuous that they’re easy to miss.
Did you know that the city has 14 bungalow districts on the National Register of Historic Places? All but one would be severely affected by the proposed ADU expansion ordinance that would require homeowners to obtain a special use from the Zoning Board of Appeals in order to permit an existing ADU so someone can legally continue living in a separate household, or to permit the build out of a new ADU. That’s because most – if not all, but I didn’t check each one – of the land is zoned RS-1 and RS-2.
Only the homeowners in the Falconer Bungalow Historic District in Belmont Cragin would be exempt from that requirement in the proposed ADU expansion ordinance because none of the bungalows are zoned RS-1 or RS-2.
In a recent blog post I quantified how many small-scale residential properties would be affected by the RS-1/2 “carve out”. In this post I’m discussing those same kinds of properties but in the 13 bungalow historic districts that would be affected.
