Sign in

Sara C. Bronin

@sarabronin.bsky.social
2.9K followers 522 following 174 posts

Mexican-American architect, attorney, GW Law professor, National Zoning Atlas/Preservation Atlas founder, "Key to the City" author, preservationist, 7th-generation Texan, mother of 3. wwnorton.com/books/key-to-the-city

PostsRepliesMedia
Sara C. Bronin @sarabronin.bsky.social · 02/09/2026
MAJOR PAPER DROP #2: Anyone claiming AI can read zoning codes is wrong. From academics offering chimerical metrics to private zoning-data companies producing AI slop, too many believe in AI shortcuts: papers.ssrn.com/sol3/papers.... This belief is only helping us misunderstand the law faster.
papers.ssrn.com
KEEPING AI IN ITS ZONE
With zoning-reform fever sweeping local governments, state legislatures, and even Congress, there is an urgent push to understand exactly how zoning works. Unfo
1137
Sara C. Bronin @sarabronin.bsky.social · 02/09/2026
MAJOR PAPER DROP #1: 1,500. That's how many academic papers cite the Wharton Residential Land Use Regulatory Index (WRLURI) - not including White House reports & popular media. The only problem? It doesn't do what it says it does. It's time to retire it. Read on: papers.ssrn.com/sol3/papers....
papers.ssrn.com
It's time to retire the Wharton Index
Empirical research on land use regulation has a credibility problem. For two decades, studies linking regulation to housing costs, residential segregation, and
151
Sara C. Bronin @sarabronin.bsky.social · 02/09/2026
Was on a break this summer, but thank you for including this in the library!
020
Reposted by Sara C. Bronin
Jonathan Berk 🏠 @berkie1.bsky.social · 30/07/2026
"Without high, measurable benchmarks, American taxpayers stand to waste tens of millions of dollars on window dressing. HUD needs to write ground rules that hold grant recipients accountable for reforms that actually create housing." @sarabronin.bsky.social www.vitalcitynyc.org/increasing-h...
vitalcitynyc.org
The Road to Producing More Housing Passes Through Meaningful Local Zoning Reforms
America needs more homes in the right places. That means fixing zoning.
085
Sara C. Bronin @sarabronin.bsky.social · 13/05/2026
Need law students? Got some great leads so far - & I have a few additional students looking for experience. Transit, housing, environmental, and cultural heritage firms (even non-law firms!) very welcome. (Feel free to repost/send to others!)
021
Sara C. Bronin @sarabronin.bsky.social · 12/05/2026
Could you use a LAW STUDENT this summer for a discrete project or full/part-time position in property, land use, energy☀️, &/or environmental🌴 law? Some of my Property Law 1Ls - skilled at AI, title searches, & zoning analysis - are available in DC, VA, MD, NYC, FL, IL, MA, MN, CA. DM me w/interest!
120
Reposted by Sara C. Bronin
National Zoning Atlas @zoningatlas.bsky.social · 25/03/2026
We've been named one of @fastcompany.com's Most Innovative Companies of 2026 in Real Estate & Urban Development. 🤓🏆 We're proud to share this recognization with our staff, partners, volunteers, and our many map users finding ways to use the NZA to improve zoning in their own communities.
012
Reposted by Sara C. Bronin
National Zoning Atlas @zoningatlas.bsky.social · 03/04/2026
No matter if it's a 2,000 sqft subdivided plot or a sprawling 20 acres, you can't have housing without the lot that lies beneath. ⬇️ In our Second Zoning Primer, we break down what NZA data reveals about minimum lot size requirements for single-family zoning nationwide. www.zoningatlas.org/lots
zoningatlas.org
MINIMUM LOT SIZES — National Zoning Atlas
The National Zoning Atlas (NZA) tracks the way zoning treats minimum lot sizes across thousands of jurisdictions. Learn more about what minimum lot sizes are and what the NZA has discovered to date ab...
021
Reposted by Sara C. Bronin
State Democracy Research Initiative @uwlawdemocracy.bsky.social · 13/04/2026
We had a lovely time in Ann Arbor at the University of Michigan Law School co-sponsoring an academic roundtable on state and local governance with Alexandra Klass, Nina Mendelson, and @chrisjwalker.bsky.social!!
184
Sara C. Bronin @sarabronin.bsky.social · 14/04/2026
Key to the City: How Zoning Shapes Our World is now in paperback! Just got a stack of books from my publisher W. W. Norton & Company, Inc. - just in time for steamy beach read season. 🏝️👙🤭
071
Sara C. Bronin @sarabronin.bsky.social · 16/03/2026
Op-ed in @crainschicago.bsky.social: @govpritzker.illinois.gov's ambitious zoning reform proposal would benefit from full buildout of the Illinois Zoning Atlas (1,396 jurisdictions) by @zoningatlas.bsky.social. Then he could calibrate reforms for max impact: www.chicagobusiness.com/opinion/comm...
chicagobusiness.com
Opinion: Illinois needs better zoning data before rewriting housing rules
Before Illinois overhauls zoning laws through Gov. J.B. Pritzker’s BUILD housing plan, lawmakers should first understand how local zoning rules actually restrict housing development, the founder of th...
020
Sara C. Bronin @sarabronin.bsky.social · 03/03/2026
Victory for NYC congestion pricing! District court's 149-page opinion finds tolls can remain in place, & wildly popular program can endure: storage.courtlistener.com/recap/gov.us... My recent @yalelawjournal.bsky.social Forum article details the lawsuit backstory: yalelawjournal.org/collections/...
yalelawjournal.org
Transportation Law's Congestion Problem | Yale Law Journal
Transportation law has a congestion problem—at least for innovative, locally driven projects that aim to reduce driving. The legal battles over congestion...
050
Sara C. Bronin @sarabronin.bsky.social · 20/02/2026
Surprise, AZ, is fighting a DHS move to site an ICE detention facility there. @zoningatlas.bsky.social shows the lot in the Light Industrial district - detention centers not allowed! But even if zoning can be overridden by feds, NEPA/NHPA might help stall it. More: www.azfamily.com/2026/02/18/s...
azfamily.com
Surprise leaders still seeking answers about DHS plan for ICE facility
Documents obtained by Arizona’s Family Investigates this week outline the Department of Homeland Security’s plan to spend hundreds of millions of dollars converting and operating a warehouse into a 1,...
010
Reposted by Sara C. Bronin
Tom Broderick @trumbullbrod.bsky.social · 19/02/2026
Life isn’t “one size fits all,” so our lots shouldn’t be, either. No one will be forced to shrink their lot, but it will pave the way for incremental change. Let’s allow our friends, families, and neighbors the flexibility, freedom, and choice to right-size their lots, their homes, and their lives.
1101
Sara C. Bronin @sarabronin.bsky.social · 19/02/2026
The CT Legislature is considering a bill that would lower minimum lot sizes to 5,000 SF. I submitted supportive testimony relying on @zoningatlas.bsky.social data that "helps paint a picture of the need for a new approach to minimum lot sizes for single-family land": www.cga.ct.gov/2026/hsgdata...
cga.ct.gov
1163
Reposted by Sara C. Bronin
Greg Shill @gregshill.com · 11/02/2026
✨ introducing… ✨ 🌇 Transportation for the Abundant Society 🚅 "Abundance" says our problem is artificial scarcity—especially housing. But you can’t build your way out if transportation policy still treats traffic flow as sacred. Transportation is the binding constraint. ssrn.com/abstract=538...
Abstract for Transportation for the Abundant Society:

A growing chorus known as the abundance movement seeks to overcome artificial scarcity in the built environment—especially housing. Yet this movement’s signature goal of increasing housing production collides with a central driver of scarcity: development restrictions rooted in traffic concerns. Advocates often assume that building more housing will generate support for needed transportation reform. Experience suggests otherwise. In auto-dependent regions, adding housing without reconfiguring transportation tends to reinforce the logic of restriction. Unlocking abundance’s promised feedback loops requires re-grounding transportation policy in its relationship to land use.

This Article makes two contributions. First, it introduces into legal analysis a core urban-planning framework: transportation accessibility, which evaluates system performance by users’ ability to reach destinations. Though facially modest, anchoring policy in accessibility would depart sharply from a century of practice, with significant implications across state and local government law.

Second, drawing on 13 original interviews with current and former transportation officials, the Article develops a novel account of institutional barriers to reform. Far from the marble corridors and mahogany courtrooms where law is articulated, transportation policy is functionally made in the unglamorous offices of state and local government. We call this institutional crucible—shaped by agency culture and industry convention as well as hard law—“transportation policy linoleum.” It helps explain why proven, seemingly unobjectionable reforms routinely wither. The Article closes with a policy playbook designed to help accessibility break through the linoleum and deliver abundance.Table of Contents

CONTENTS
INTRODUCTION	3
I.  ABUNDANCE AND TRANSPORTATION POLICY	6
A. The Rise of Abundance	7
B. Transportation as a Binding Constraint	10
II. THE PURPOSE OF TRANSPORTATION POLICY	17
A. What Counts as Success?	18
B. From Mobility to Access	20
C. Transportation Policy Spillovers	24
1.	Housing affordability	24
2.	Climate mitigation	28
3.	Roadway safety	29
III. OPERATIONAL BARRIERS TO REFORM	32
A. Network Effects and System Interdependence	33
B. Operational Complexity and Risk	34
IV. LEGAL BARRIERS TO REFORM	36
A. NEPA and the Dawn of Conservation Primacy	36
B. Judges as Planners: California’s CEQA Regime	40
C. Judges as Planners Around the Country	44
1.	Minnesota and comprehensive planning	44
2.	Washington, D.C. and density review	46
3.	Montana and constitutional penumbra	46
V. TRANSPORTATION POLICY LINOLEUM	48
A. Policy “In Books” and “In Action”: 13 Interviews	48
B. Fragmentation and Coordination Failures	49
C. Path Dependence and Institutional Lock-In	53
D. Legal Risk and Defensive Administration	55
VI. A POLICY PLAYBOOK FOR ACCESS	57
A. Behavioral Data as Participation	57
1.	Ex ante participation	58
2.	Ex post participation	59
B. Realistic Alternatives Modeling	59
C. A More Honest Cost-Benefit Analysis	60
1.	Requiring cost-benefit discipline	61
2.	Accounting for opportunity costs and externalities	63
CONCLUSION	64

ToC continued, plus first bit of text from article:

A central claim of the emerging “abundance agenda” is that in the physical world, more is more: more housing, more clean energy, and more infrastructure to support both. Abundance brings the American promise of plenty into policy, arguing that government should expand capacity—so that individuals can access the good life and society can advance climate goals, scientific discovery, and prosperity. In both its academic and popular expressions, the ideologically diverse movement  contends that law has created artificial scarcity  and that the remedy is to loosen outdated constraints and rebuild state capacity  so government can build and approve major projects—housing, transportation, energy, health—more quickly and reliably.
Abundance draws on a substantial literature diagnosing law-made supply constraints in American public policy. Its core question is pragmatic: how to clear regulatory blockages to enable more building. Scholars have long identified such blockages at the intersection of land use and transportation, from highways to high-speed rail. Yet even improved megaprojects would not meet most Americans’ daily transportation needs. And the connection between transportation policy and abundance remains underdeveloped, even as political interest grows.
410540
Sara C. Bronin @sarabronin.bsky.social · 29/01/2026
Story about the need for generational change in the First Congressional district: www.nytimes.com/2026/01/29/u... Proud of @lukebronin.bsky.social (no relation... anymore!) for challenging the status quo & stepping up to represent his community.
nytimes.com
Groups Back Larson Challenger, Calling for Generational Change
121
Sara C. Bronin @sarabronin.bsky.social · 20/01/2026
🚦🚕 New Essay in @yalelawjournal.bsky.social Forum: "Transportation Law's Congestion Problem," covering the NYC congestion pricing battle & encouraging law to facilitate local projects that reduce driving. 🚘🚊 Full "Cities & States at a Crossroads" Collection here: yalelawjournal.org/collection/c...
yalelawjournal.org
Yale Law Journal
For over a century, the Yale Law Journal has been at the forefront of legal scholarship, sparking conversation and encouraging reflection among scholars and students, as well as practicing lawyers and...
110
Sara C. Bronin @sarabronin.bsky.social · 20/01/2026
The latest Design Now Podcast hosted by Duo Dickinson features Andres Duany, Yodan Rofe, and me on the intersection of design & community: savedbydesign.wordpress.com/2025/12/12/d...
savedbydesign.wordpress.com
DESIGN: The Places We Live
GREAT PODCAST! There is political urgency in the Housing Crisis: There is academic fascination with Urban Design: There is popular cultural obsession with Community Building. But the basic directio…
120
Sara C. Bronin @sarabronin.bsky.social · 20/01/2026
I really enjoyed this conversation with two preservation friends about the importance of zoning to preservationists! Check out the full video in the link below:
051
Sara C. Bronin @sarabronin.bsky.social · 11/01/2026
How could I have missed that the comma after "see" in "See, e.g." is supposed to be italicized!? (In this official Bluebook example, blue = italicize.) Hoping this was a recent change & I don't have to renounce every legal text I've ever written! They're filled with plain commas in this position...
Bluebook citation with italicized comma.
130
Sara C. Bronin @sarabronin.bsky.social · 29/12/2025
This "High-Impact" honor means a lot to the NZA team working to make zoning data accessible, accurate, & actionable. In 2026, our philanthropic priority is an engagement team to translate our data for advocates, policymakers, & the public. 🫶Consider supporting our work!: www.zoningatlas.org/donate
zoningatlas.org
Giving to Land Use Atlas, Inc.
Help Us Make Land Use Data Actionable and Accessible! We’re building the National Zoning Atlas and National Preservation Atlas to make information about the land use rules that shape our communities a...
041
Sara C. Bronin @sarabronin.bsky.social · 23/12/2025
I’ve attended a couple of these Lincoln Institute Journalists Fora. They've inspired us at the NZA to do a (virtual) media training in the new year to ensure reporters know how to use it. Stay tuned, but in the meantime, media can learn more about the NZA at www.zoningatlas.org/media!
zoningatlas.org
MEDIA RESOURCES — National Zoning Atlas
Explore the National Zoning Atlas Media Resources page to learn how reporters can access data, reports, and visuals to support accurate reporting on how zoning shapes housing, land use, and communitie...
121
Sara C. Bronin @sarabronin.bsky.social · 22/12/2025
Now @abigailspanberger.com has a roadmap for fulfilling her campaign promises on housing. Last month, @zoningatlas.bsky.social released a statewide report & public map that documents VA zoning (www.zoningatlas.org/virginia). Read our op-ed in @pilotonline.com!: www.pilotonline.com/2025/12/17/c...
zoningatlas.org
Virginia Zoning Atlas — National Zoning Atlas
The Virginia Zoning Atlas is a project of the National Zoning Atlas, which aims to digitize, demystify, and democratize information about zoning conditions in more than 30,000 U.S. jurisdictions. The ...
073
Reposted by Sara C. Bronin
Melissa & Chris Bruntlett @modacitylife.com · 14/12/2025
2. Key to the City - How Zoning Shapes our World by @sarabronin.bsky.social. bsky.app/profile/moda...
162
Sara C. Bronin @sarabronin.bsky.social · 14/12/2025
Good urbanist books list!
061
Sara C. Bronin @sarabronin.bsky.social · 11/12/2025
Nolan's right: the right statewide reforms can work - & in some cases have been transformative. @zoningatlas.bsky.social has revealed that state laws don't always hit the mark (e.g., overlooked barriers, lack of local compliance). But we shouldn't undercut the potential of statewide reforms.
063
Sara C. Bronin @sarabronin.bsky.social · 02/12/2025
"Bronin challenges readers to think big when it comes to zoning reform. And it illuminates the beauty... possible in urban spaces... Key to the City stands as a powerful call for (thoughtful) action." Kind review by @ezrarosser.bsky.social @jotwell.bsky.social!: property.jotwell.com/unlocking-dy...
property.jotwell.com
Unlocking Dynamic Growth - Property
Sara C. Bronin, Key to the City: How Zoning Shapes Our World (2024).Ezra RosserProfessor Sara Bronin’s book, Key to the City, pulls back the curtain on how urban zoning works. And through in-depth cit...
033
Reposted by Sara C. Bronin
Felicity M. Maxwell @cityjane.bsky.social · 28/11/2025
And then there were FOUR 🎉🎉 Congratulations to Connecticut, which earlier this week became the 4th state to pass statewide Parking Reform in 2025: bsky.app/profile/ctpa...
1166
Reposted by Sara C. Bronin
Steven Nelson @stevenel.bsky.social · 21/11/2025
I spoke to @sarabronin.bsky.social about her book on zoning and how it affects us all. Have a listen!
diydemocracy.libsyn.com
DIY Democracy: Zoning: Key to the City and to Our Communities
I spoke with Professor Sara Bronin to learn about zoning: what is it, what is its purpose, and how does it work.  Link to her book on bookshop:  Link to her website tool to learn about zonin...
022
Sara C. Bronin @sarabronin.bsky.social · 14/11/2025
The NZA methodology is incredibly complex, and this post explains in (somewhat) plain English how we have decided (after years of discussion) to display areas with base districts and overlays:
062
Reposted by Sara C. Bronin
Livable Cville @livablecville.bsky.social · 07/11/2025
Very much worth your time!
182
Sara C. Bronin @sarabronin.bsky.social · 06/11/2025
VIRGINIANS! You voted for affordability - now make sure it happens via zoning reform. Check out "Zoning Report: Virginia," which analyzes 50,000 pages of zoning codes: www.zoningatlas.org/virginia. Check out how your town/region fares w/our Snapshots! And join our webinar Tuesday to chat live!
zoningatlas.org
National Zoning Atlas Zoning Snapshots — National Zoning Atlas
"Zoning Snapshots" summarize data collected by the National Zoning Atlas team - and can be generated by the user for every jurisdiction, county, or metropolitan area covered by the NZA.
0124
Sara C. Bronin @sarabronin.bsky.social · 04/11/2025
Interested in parking reform? Check this out - I'll be talking about Hartford (& a tiny bit about @zoningatlas.bsky.social's parking features):
052
Sara C. Bronin @sarabronin.bsky.social · 03/11/2025
A long review of Key to the City just came out in New York Review of Books!: www.nybooks.com/articles/202...
nybooks.com
Reshaping the City | Samuel Stein
What does zoning reform have the power to change?
031
Sara C. Bronin @sarabronin.bsky.social · 30/10/2025
Latest in the East Wing demolition saga - the President fires members of the Commission on Fine Arts. My comments for @npr.org's All Things Considered: www.npr.org/2025/10/29/n...
npr.org
White House fires entire commission that reviews designs for federal buildings
The White House has fired all six members of the U.S. Commission of Fine Arts, the independent federal agency that reviews design plans for monuments, memorials, coins and federal buildings.
120
Sara C. Bronin @sarabronin.bsky.social · 24/10/2025
The East Wing demolition has raised alarms beyond the American preservation community: the world is watching. Today @abc-news.bsky.social (Australia) released "Is Trump allowed to demolish the White House's East Wing?" I'm at minute 14:00: www.youtube.com/watch?app=de...
youtube.com
Is Trump allowed to demolish the White House's East Wing? | Planet America
YouTube video by ABC News In-depth
1105
Sara C. Bronin @sarabronin.bsky.social · 22/10/2025
The demolition of the White House East Wing is underway. Might there be a path to stop it through litigation? Thinking about it as we speak. 🤔 Regardless, Congress must strengthen oversight and close the White House loophole, so this never happens again. Stay tuned as this develops.
39727
Reposted by Sara C. Bronin
Pro-Homes CT @prohomesct.bsky.social · 16/10/2025
Congratulations to @SaraBronin.bsky.social for winning the prestigious Heinz Award for her groundbreaking work on zoning reform - but the celebration comes with concern. Due to Governor Ned Lamont vetoing HB 5002, she voiced disappointment over the loss of a bill aimed at improving housing access...
151
Sara C. Bronin @sarabronin.bsky.social · 18/09/2025
DC Book Talk: On 9/25 at noon, I'll be at @auwcl.bsky.social, hosted by property law professor @ezrarosser.bsky.social. I'll cover a few specific legal issues, & then branch out to organizing/advocacy, @zoningatlas.bsky.social, & probably policy/political topics too. Feel free to join us!
060
Reposted by Sara C. Bronin
Urban Austin Reads @urbanatxreads.bsky.social · 16/09/2025
THIS THURSDAY! Join us, @aura-atx.org, & @texansforhousing.bsky.social, 7 PM at Café Crème, to hear @sarabronin.bsky.social about discuss her book, Key to the City: How Zoning Shapes Our World. RSVP here — free to attend, but book purchase with ticket available: thelittlegayshop.com/products/urb...
072
Sara C. Bronin @sarabronin.bsky.social · 12/09/2025
Looking amazing guys! Can't wait! Fellow attendees, come join the @zoningatlas.bsky.social team on SUNDAY at 3 p.m. (and me + @evictionlab.bsky.social on MONDAY at 3 p.m.)!
040
Sara C. Bronin @sarabronin.bsky.social · 08/09/2025
Los Angeles: The City of Angels (and its entire CBSA) is up on the National Zoning Atlas! 😇😇😇 Check out our webinar, September 17, 1 p.m. PST/4 p.m. EST where our team will present some findings in the region:
010
Sara C. Bronin @sarabronin.bsky.social · 03/09/2025
AUSTIN! Come talk zoning (@zoningatlas.bsky.social + "Key to the City") with me at: - A book event w/@urbanatxreads.bsky.social, AURA, & Texans for Housing at 7 p.m. on Thursday, 9/18! - The Movability Summit on at 11 a.m. on Friday, 9/19!: movabilitytx.org/events/movab... Hope to see you!
062
Sara C. Bronin @sarabronin.bsky.social · 21/08/2025
New Mexico statewide zoning analysis webinar next week! Registration details below. Want some background info on NM zoning? See here!: www.zoningatlas.org/new-mexico
zoningatlas.org
New Mexico Zoning Atlas — National Zoning Atlas
The New Mexico Zoning Atlas is a project of the National Zoning Atlas, which aims to digitize, demystify, and democratize information about zoning conditions in more than 30,000 U.S. jurisdictions. In...
010
Sara C. Bronin @sarabronin.bsky.social · 21/08/2025
2L+ JD STUDENTS: Check out this opportunity at the NZA! You'll work directly with me & others to help illuminate zoning for the public, while honing your research, organizational, & comms skills. We're looking for the VERY TOP land use law students & future leaders. If this is you, apply today!🤓
010
Sara C. Bronin @sarabronin.bsky.social · 10/08/2025
DFW - come find me at two events this week (details attached!)!: - Tuesday at 6 p.m., book talk at the Dallas Latino Cultural Center - Wednesday at 7 a.m., board meeting of the Greater Dallas Planning Council (+ @shanedphillips.bsky.social, Bryan Tony, and Emily Liu). Hope to see you!
010
Reposted by Sara C. Bronin
National Zoning Atlas @zoningatlas.bsky.social · 07/08/2025
"With so much of Colorado’s land banning the most affordable housing type—multi-family units —it is small wonder rents have soared so high." In a new op-ed, NZA CEO @sarabronin.bsky.social breaks down a new NZA #zoninganalysis available for Colorado. www.coloradopolitics.com/opinion/zoni...
coloradopolitics.com
Zoning rules exacerbate Colorado’s housing crisis | OPINION
Gov. Jared Polis' recent executive order tying grants to compliance with statewide housing goals is the latest chapter in Colorado’s ongoing saga to address its housing affordability crisis.
031
Reposted by Sara C. Bronin
Raj Mankad @rajmankad.bsky.social · 06/08/2025
I'll be in conversation with Houston raised zoning expert Sara Bronin at Brazos Bookstore today at 6:30. Hope to see you there!
021
Sara C. Bronin @sarabronin.bsky.social · 01/08/2025
.@houstonchronicle.com op/ed is an edited excerpt from my book, Key to the City: How Zoning Shapes Our World. It makes the case that my hometown, Houston, might think about zoning again!: www.houstonchronicle.com/opinion/outl... Join me at Brazos Bookstore Wednesday to chat more about this!
houstonchronicle.com
I'm an urban planning expert from Houston. It's time we talk about zoning again.
A Houston-born expert on urban planning expert says it's time for Houston to rethink the z-word.
251