This type of tool could be quite valuable as a public good, but my expectation is that it will cost another order of magnitude, so my support here is only a token amount.
We’ve seen a string of YIMBY wins in recent years at the state level in California and elsewhere and a growing number of local victories in, for example, Sacramento, Austin, and Minneapolis.
Self-imposed housing scarcity has negative ramifications for our wellbeing across many axes, from public health to climate change, so these wins are heartening. There’s momentum in the right direction.
But actual new housing development is still painfully slow. The regulatory changes are necessary but not sufficient. We also need lots of property owners to choose to build more housing.
One factor holding back more housing supply is that the opportunities to build aren’t widely enough known or understood.
Case in point: my brother recently purchased a house in South Pasadena, one of the NIMBY-est cities in California. He and his partner are planning to gut-renovate and expand the place. They were unaware until I informed them that they’re allowed to build two ADUs by right.
My proposal is to build software that provides a clear and persuasive answer to the question, "given a parcel, what’s the maximal housing I’m allowed to build on it?"
I intend to begin with just one city, because there's so much variance between different geographies, and each is unique in many ways. My longer term goal is to do this statewide and then nationwide.
To do this well will require assimilating and interpreting parcel data and state and local zoning and building codes and case law, as well as thoughtful user experience and graphic design and some financial modeling.
I can build an MVP using ordinary & vanilla software tooling and hand-parsing and interpretation of the relevant artifacts.
Because curiosity and self interest are powerful motivators, I intend to frame the site in terms of the self-interest of land owners and/or potential land purchasers.
Upshot: I believe well designed software tools can help bridge the gap between policy changes and real-world housing supply by appealing to self interest, and I want to try to do that at scale.
I've focused my professional efforts on trying to achieve socially positive outcomes along avenues suggested by thoughtful academic research.
I was an early employee at Opower, where I helped design and develop software-powered direct mail programs that have so far yielded more than 31 terawatt-hours of energy usage reductions.
More recently I founded Vote Forward (https://votefwd.org), a 501(c)(4) nonprofit that organizes volunteers to send handwritten letters to their fellow citizens encouraging voter turnout. Inspired by the work of folks like Don Green and Todd Rodgers on social pressure for voting behavior, I started with a small RCT, sending 1000 letters from my kitchen table, and saw a startlingly large (>3 percentage points) effect on turnout. On the strength of that result I scaled it up, first with help from friends, and later with support from donors to hire a team. So far more than a quarter million people have written a total of tens of millions of “please vote!” letters through Vote Forward. Overall I can say with high confidence that we’ve had a significant influence on the makeup of the electorate, including in some close and highly consequential elections including the 2020 Presidential & Senate contests.
So two notable successes in using software to drive real-world outcomes at a large scale — energy efficiency in one case, voter turnout in the other — with rigorous impact measurement.
Earlier this year I passed the baton to a new Executive Director of Vote Forward. I’m still a board member, but my duties are fairly light, so I’m now exploring options for a next big project.
My abilities and proclivities are well suited to this one. I’m a competent software developer in my own right, so I personally can do a lot of the work I’m proposing. I also have a track record of taking inklings of the sort that I have here now, building first versions in scrappy ways, and then scaling them up.
Most importantly, I feel quite motivated to do this. I find the choices we’ve made as a society about land use to be utterly maddening. I think I have a solid idea here for how to make some progress and help a lot of people join me in seeing the situation more clearly, and get more housing built, so I’m eager to give it a try.
I’m @sjforman on Twitter and sjforman.me on Bluesky. I also have a (recently published, so pretty minimal) personal website at sjforman.me. I haven’t historically been much of a poster so these aren’t that rich of a source of info, but will suffice to validate my identity.
I think I need $15k to take a swing at this. I loosely anticipate spending about $5k to pay for some expert advice on the land use legal landscape, $5k for user experience and graphic design support, and $5k for software development assistance.
I estimate a high probability that, given funding, I can manifest some version of the idea I'm describing here, perhaps 80% likelihood.
A stricter definition of success would be demonstrating that I've caused at least one additional unit of housing to come into being. I'm not sure how or on what timeframe to measure that though, so I'm reluctant to assign it a probability.
I am eager to make a foray here, but this is a new domain for me — I'm not a planner, architect, or real estate pro. So there is a significant chance that — as with all early stage projects of this kind — I will discover as I dive deeper that my initial idea doesn't make sense, or doesn't have the impact I hope, for reasons that I can't foresee. In other words, funders should be comfortable with the possibility of pivoting.
I suspect the data and analytic tools I'm envisioning to help demystify land use regulations at the level of individual parcels could be useful in more systematic ways.
Building Political Support
I want to be able to say to users: “If Senate Bill X is enacted this year, you’d be allowed to build a third ADU on your property. Even just passing the law would increase your property value by approximately $10k, and if you decide to build such an ADU, you stand to gain $100k to $200k in property value. You can call your assembly member to express your support at…” The converse message could be sent for down-zonings.
Helping to Shape Policy
I also envision eventually using these analytic tools to provide policymakers with increased visibility into the real-world impacts of legal and regulatory changes under consideration. Matt Yglesias recently:
"The thing I keep saying YIMBYism needs next is better analytic capacity to assess the actual impact of specific policy changes on housing outcomes. Right now, I think advocates are to an extent flying blind in terms of which things are really worth fighting for and which are less important."
I agree, and I think what I’m going to build could be quite powerful in helping to navigate between alternative policy pathways or to further arm advocates with hard data to make their case.
Harvey Powers
6 months ago
This type of tool could be quite valuable as a public good, but my expectation is that it will cost another order of magnitude, so my support here is only a token amount.
Andreas Z.
6 months ago
I have no clue about YIMBY/NIMBY in California. However, the valuation of 15k seems so cheap for buildings. It only takes a second anecdote like the brother mentioned there, which can be traced directly to this MVP.
Scott J. Forman
6 months ago
@marktwse thank you! I appreciate the vote of confidence, and yes, I tend to agree with your assessment, that it ought to be possible to induce some new housing to be built with an approach like mine. And then to expand from there.
Alyssa Riceman
6 months ago
I'm not currently assigning huge probability that this will end up working—I anticipate a decent amount of risk of its running around either on the hurdle of "it's hard to pull together the necessary mix of knowledge-of-laws plus knowledge-of-land-parcels to put together useful outputs" or on the hurdle of "getting people to be aware of / pay attention to the software once it exists might be hard"—but, if it were to work, it seems like it could be pretty valuable as a step towards increasing abundance-of-cheap-housing in the areas it covers, with corresponding improvements to general quality-of-life for the new residents (and/or the old residents who end up paying less), and that does in fact seem like a pretty valuable target to aim at even given an only-moderate chance of success.
Jason
6 months ago
There seems to be some potential tension here between "given a parcel, what’s the maximal housing I’m allowed to build on it" being a difficult question due to mystifying land use regulations, and some sort of useful product being obtainable with $15K in funding. Could you say a bit more about how the regs are both mystifying enough to be a problem for landowners and yet amenable to coding with a high degree of accuracy? [I'm a lawyer, but know basically nothing about land use reform.]
Scott J. Forman
6 months ago
@jason, happy to share some thoughts on this, sure. First, important to be clear that what I'm proposing to build is an MVP, "minimum viable product." I see a lot of complexity in the rules, and I'm proposing to demystify some fraction of that complexity, for relatively uninformed market participants, in probably just one city where the rules have recently changed in significant ways, like Sacramento. [I have a secondary thesis is that it takes time for knowledge of changes to diffuse into local awareness, and that good tools can accelerate that process]. Can full demystification across many jurisdictions be achieved with $15k? Definitely not. But I do think I can build something valuable that achieves some degree of demystification, and hopefully exposes a path forward to continue to make progress.
Saul Munn
7 months ago
things that make me excited about this project:
your track record! "[T]wo notable successes in using software to drive real-world outcomes at a large scale — energy efficiency in one case, voter turnout in the other — with rigorous impact measurement." that's awesome, and makes me more inclined to view the rest of the application positively + give more room for you to pivot.
the "building political support" section at the bottom seems really cool. i'd be quite excited about things in this vein.
things that make me pause:
"One factor holding back more housing supply is that the opportunities to build aren’t widely enough known or understood."
really? i'd be interested in more explanation about why you think this is the case; i appreciate the anecdata story that follows but some hard numbers — even a quick poll or something — would be helpful here.
why is YIMBYism actually important? the retro funders in this impact market round are ACXG25, LTFF/EAIF, and the SFF. it seems pretty unlikely that any of {LTFF/EAIF, SFF} will be interested in funding YIMBYism; it's outside the cause areas they're interested in. that leaves ACXG25... and there's an unclear explanation of why Scott should value this highly next year — even in the case that you have great success and do exactly what you set out to do.
Scott J. Forman
7 months ago
Great questions, thanks for reading & for the thoughtful consideration @saulmunn. And apologies for the slow reply — I just realized your post was here.
On your first point, I'll grant that "housing production being hamstrung to some degree by lack of understanding of what's even allowed" is an impression more than a strong conviction. I also note the obvious counter-argument that real estate is a competitive market with many actors who are strongly motivated to know the rules and act accordingly. I nevertheless think that at the small scale especially, awareness plays a role. One bit of quantitative evidence, a 2020 report from the UC Berkeley Center for Community Innovation found that 16% of their survey respondents [caveat — planner & city officials, not homeowners per se] cited "Lack of Awareness" and as a barrier to ADU development. A later 2022 report "ADUs for All: Breaking Down Barriers to Racial and Economic Equity in Accessory Dwelling Unit Construction" notes, of focus group participants, "Many were not aware that ADUs are legal throughout the whole state..." I can't find much more rigorous survey data on this question, but I think it's defensible insofar as the population of homeowners is large and not mainly composed of real estate professionals.
On your second question, I'll admit that I hadn't fully grasped that those are the only possible retro funders for this market. If that's so, then I'll grant that this is an unlikely fit for 3 of the 4 of them. I would nevertheless content that there's a decent chance that Scott might find this compelling if it goes well. Will Jarvis was a previous ACXG recipient for his Georgism-inspired project ValueBase, a pretty closely adjacent concept. And then just overall, my impression is that Scott is proud of the EA community's contribution to the YIMBY movement, and my effort here is aimed at bringing more clarity to the YIMBY table. For my part, on the question of why this is important, I really do see housing scarcity as the root of a lot of deep social problems. Can housing abundance prevent pandemics or lower p(doom)? Not directly! But can it alleviate a lot of suffering directly by making housing less exorbitantly expensive and putting a big dent in the homelessness rate, while dramatically increase GDP, reducing carbon emissions, improving public health, dampening opposition to immigration, and making it easier to start a family? Yep! It can.
Saul Munn
7 months ago
@sjforman really great answers — i appreciate the depth & clarity of your response.
on the first point, i'm convinced. thank you for the citations!
on the second point, although those aren't the only possible retro funders for this market, they are the only ones that manifund has coordinated with — so unless other funders come along and decide to retro fund (which they might! and which you can ask them to do!), they won't. regardless, though, you make a pretty good point re: will jarvis/acxg.
i've offered to buy $50 at a $15k evaluation, mostly as a credible signal to other investors that there's something worth looking at here. good luck!