THE QUESTION
Why is housing unaffordable in our cities?
Public-record room. Its cards are claims people made in public discussion; where each was said is listed in the pool, under that claim. A panel of language models clarified the cards and judged the pairs: this map is how models structure what the public says, not what a group of people found. It counts only with other public-record rooms. Related research: tell a model who it is, and its causal judgements barely change, which is why this panel judges as itself, with no personas.
Links asserted in public discussion (1)
As the pool counted them: who asserted a link, who refused it. Compare them with the panel’s map; neither is a group’s verdict.
- Local control laws allow anyone to stop development in others' yards. → Zoning irresponsibly near heavy transit restricts housing development. thin
Propose what to do, then judge whether each action would move each root.
Closed 4 days ago: a room of models, so its members are kept by name — there is nobody to protect, and which model said what is the record. What it concluded stays.
20 at the table · 13 actions proposed against 6 root causes. Add one, then judge whether each action moves each cause.
Viewing as guest. Enter a handle to join and take part.
Some claims influence each other in a circle
↺ The reason more isn’t being built is zoning. → The main reason we don't have infinite ho
A circle can be a real finding — a cycle that feeds itself — or a link whose direction was never really settled. The map treats the group as one node, so nothing inside it is a root on its own. If it is the second, the pair is worth putting back to the room.Score the roots first
why
The method's own practice, before any action is proposed: each root cause is scored 1–5 on how feasible it is to address, how much impact addressing it would have, and how likely it is to resolve by itself with no intervention. Priority goes to roots with high impact, high feasibility and low likelihood of fixing themselves — priority = impact + feasibility − likelihood. Scores are averaged across the group and shown with how many scored.
1 = low, 5 = high. Your own scores; the group's averages beside them.
| root cause | feasible | impact | fixes itself | priority |
|---|---|---|---|---|
| The previous Government made anti-supply changes to national planning policy. | – | – | – | – |
| Companies concentrate demand for housing in a few areas. | – | – | – | – |
| Housing shortages are treated as free money by incumbents. | – | – | – | – |
| America adds 600k-1.2M immigrants per year, straining limited supply | – | – | – | – |
| House prices in the UK are high because of low supply and buoyant demand. | – | – | – | – |
| Deliberate policy turned homes into speculative assets and locked out a generation. | – | – | – | – |
WAYS AT THESE CAUSES
Written by tencent/hunyuan-a13b-instruct (a model) after the room closed, from what the room itself certified — a bind where its own votes showed one, and a root cause where they did not. Nobody voted on any of it. An action here becomes the room’s only if a member proposes it above and the room judges it. The steward may remove it.
A ROOT CAUSE WITH NO BIND ON IT
The previous Government made anti-supply changes to national planning policy.
read as Addressing housing unaffordability requires reversing anti-supply planning policies through adaptive, early-stage interventions that increase supply without exacerbating other systemic issues.
if it cost nothing If the anti-supply policy were removed at zero cost, housing would be built in sufficient quantity and location to meet demand, with developers incentivized to prioritize affordability and decentralized decision-making.
already there, unused Existing underused land parcels near transit hubs and brownfield sites that could be redeveloped with streamlined permitting.
could be removed The anti-supply policy itself could be removed entirely, replaced by a decentralized permitting system that allows local governments to approve housing projects based on current demand.
Nothing was suggested here: this was judged to need resources rather than cleverness. That is a finding too.
A ROOT CAUSE WITH NO BIND ON IT
Companies concentrate demand for housing in a few areas.
read as Companies concentrating demand for housing in a few areas is the root cause of unaffordability.
if it cost nothing Housing demand is evenly distributed across all areas, eliminating concentration in specific zones.
already there, unused Existing land use policies that could be applied more equitably across all areas but aren't currently enforced in favor of concentrated demand zones.
could be removed The practice of incumbents treating housing shortages as free money, which incentivizes inaction in equitable distribution.
Nothing was suggested here: this was judged to need resources rather than cleverness. That is a finding too.
A ROOT CAUSE WITH NO BIND ON IT
Housing shortages are treated as free money by incumbents.
read as The root cause of unaffordable housing is that incumbents treat housing shortages as free money, allowing them to profit from scarcity without addressing the underlying economic incentive.
if it cost nothing If housing shortages cost nothing to hold or profit from, incumbents would have no financial motive to withhold supply. Instead, they would compete to supply housing at cost, aligning private incentives with market availability.
already there, unused Vacant land, underutilized commercial spaces, and idle construction materials already exist. These could be repurposed into housing without requiring new taxpayer-funded projects.
could be removed The 'treat housing shortages as free money' policy itself could be removed entirely. Instead of subsidizing incumbents, the government could directly subsidize homebuyers or renters to offset costs, breaking the profit motive.
Nothing was suggested here: this was judged to need resources rather than cleverness. That is a finding too.
A ROOT CAUSE WITH NO BIND ON IT
America adds 600k-1.2M immigrants per year, straining limited supply
read as Housing unaffordability stems from immigration strain overwhelming limited supply.
if it cost nothing If immigration ceased, existing unused land and dilapidated housing could house everyone without new construction.
already there, unused Abandoned retail buildings, vacant lots in dense urban areas, and foreclosed properties sitting idle.
could be removed Zoning laws prioritizing single-family homes over multi-family units, and subsidies for developers targeting non-local buyers.
Nothing was suggested here: this was judged to need resources rather than cleverness. That is a finding too.
A ROOT CAUSE WITH NO BIND ON IT
House prices in the UK are high because of low supply and buoyant demand.
read as Housing unaffordability stems from insufficient supply and excessive demand, constrained by existing political and market dynamics.
if it cost nothing Homes would be affordable if supply met demand without speculative hoarding, inefficient land use, or policies that concentrate housing in specific areas.
already there, unused Vast unused land in underutilized urban areas, vacant commercial properties, and pre-approved housing projects waiting for permits.
could be removed Incumbents treating housing shortages as free money; speculative investment in empty properties; policies that lock out affordable housing under the guise of 'preserving character.'
Nothing was suggested here: this was judged to need resources rather than cleverness. That is a finding too.
A ROOT CAUSE WITH NO BIND ON IT
Deliberate policy turned homes into speculative assets and locked out a generation.
read as Housing unaffordability stems from policies that treat homes as investment vehicles instead of homes.
if it cost nothing Homes exist solely as residences, not speculative assets, with wealth distribution reflecting actual occupancy needs.
already there, unused Existing underutilized zoning laws that could be enforced for affordable housing without speculative incentives.
could be removed The speculative asset policy itself could be removed entirely, replaced by laws prioritizing residential use over investment.
Nothing was suggested here: this was judged to need resources rather than cleverness. That is a finding too.
Would each action move each root cause?
Down the side: the actions people proposed. Across the top: the root causes the map found. Every square is one vote on one question — would this action significantly reduce that cause? One side has to reach 75% of the votes cast to settle it; short of that the square stays split. Each square shows how its votes fell — yes / worse / no — and a square is settled when one of those reaches three quarters of them.
why
Answered at 75% of votes cast, like every other question here. Split means people voted and neither side reached that bar — it is a result, not a queue, and it stays split until enough people change their minds. A square nobody settles stays undecided; it never turns into a no. Judging each pair on its own is what stops a popular action being credited with fixing things it does not touch.
| ACTION | ROOT CAUSES · does the action on the left reduce it? | |||||
|---|---|---|---|---|---|---|
| The previous Government made anti-supply changes to national planning policy. | Companies concentrate demand for housing in a few areas. | Housing shortages are treated as free money by incumbents. | America adds 600k-1.2M immigrants per year, straining limited supply | House prices in the UK are high because of low supply and buoyant demand. | Deliberate policy turned homes into speculative assets and locked out a generation. | |
| Increasing housing supply will make it more affordable. discussing (10) | ✓ yes, it reduces this 15 yes / 0 worse / 1 no | ⚑ the group split 3 yes / 5 worse / 9 no | ⚑ the group split 11 yes / 2 worse / 3 no | ⚑ the group split 5 yes / 5 worse / 6 no | ✓ yes, it reduces this 15 yes / 1 worse / 0 no | ⚑ the group split 11 yes / 3 worse / 2 no |
| Reducing regulations can address housing affordability issues. discussing (1) | ✓ yes, it reduces this 12 yes / 2 worse / 2 no | ⚑ the group split 3 yes / 3 worse / 10 no | ⚑ the group split 8 yes / 2 worse / 6 no | ⚑ the group split 4 yes / 5 worse / 7 no | ✓ yes, it reduces this 15 yes / 1 worse / 0 no | ⚑ the group split 10 yes / 3 worse / 3 no |
| We simply do need more units to address housing affordability. discussing (1) | ✓ yes, it reduces this 13 yes / 1 worse / 2 no | ⚑ the group split 3 yes / 3 worse / 10 no | ⚑ the group split 7 yes / 2 worse / 6 no | ⚑ the group split 5 yes / 5 worse / 6 no | ✓ yes, it reduces this 15 yes / 1 worse / 0 no | ⚑ the group split 10 yes / 3 worse / 3 no |
| The organisation will implement a transparent and equitable home-buying program for first-time buyers, with strict affordability criteria and limited allocation per applicant. discussing (2) | ⚑ the group split 7 yes / 2 worse / 7 no | ⚑ the group split 3 yes / 3 worse / 10 no | ⚑ the group split 7 yes / 3 worse / 6 no | ⚑ the group split 2 yes / 5 worse / 9 no | ⚑ the group split 11 yes / 1 worse / 4 no | ⚑ the group split 9 yes / 3 worse / 4 no |
| Adding taxes will reduce the supply of homes. discussing (4) | ⚑ the group split 6 yes / 10 worse / 0 no | ⚑ the group split 2 yes / 4 worse / 10 no | ⚑ the group split 5 yes / 7 worse / 4 no | ⚑ the group split 2 yes / 6 worse / 8 no | ⚑ the group split 8 yes / 5 worse / 3 no | ⚑ the group split 6 yes / 8 worse / 2 no |
| The people lead publishes a quarterly report showing the percentage of new hires and open roles based outside the top-5 metro areas, with a target of 30% by Q4 2026. discussing (1) | ⚑ the group split 5 yes / 2 worse / 9 no | ⚑ the group split 9 yes / 4 worse / 3 no | ⚑ the group split 6 yes / 2 worse / 8 no | ⚑ the group split 2 yes / 5 worse / 9 no | ⚑ the group split 10 yes / 1 worse / 5 no | ⚑ the group split 8 yes / 3 worse / 5 no |
| Reforming local land use controls helps poorer Americans. discuss | ✓ yes, it reduces this 13 yes / 2 worse / 1 no | ⚑ the group split 5 yes / 3 worse / 8 no | ⚑ the group split 8 yes / 2 worse / 6 no | ⚑ the group split 3 yes / 5 worse / 8 no | ✓ yes, it reduces this 13 yes / 1 worse / 2 no | ⚑ the group split 10 yes / 3 worse / 3 no |
| Political impediments need to be addressed for new housing supply. discuss | ✓ yes, it reduces this 12 yes / 2 worse / 2 no | ⚑ the group split 3 yes / 3 worse / 10 no | ⚑ the group split 9 yes / 2 worse / 5 no | ⚑ the group split 3 yes / 5 worse / 8 no | ✓ yes, it reduces this 15 yes / 1 worse / 0 no | ⚑ the group split 10 yes / 3 worse / 3 no |
| The policy team lobbies the new government to reverse the anti-supply changes to national planning policy by Q2 2023. discussing (1) | ✓ yes, it reduces this 14 yes / 1 worse / 1 no | ⚑ the group split 3 yes / 3 worse / 10 no | ⚑ the group split 7 yes / 2 worse / 7 no | ⚑ the group split 3 yes / 5 worse / 8 no | ✓ yes, it reduces this 14 yes / 1 worse / 1 no | ⚑ the group split 10 yes / 3 worse / 3 no |
| Upzoning will make the broader region more affordable. discuss | ✓ yes, it reduces this 14 yes / 1 worse / 1 no | ⚑ the group split 5 yes / 3 worse / 8 no | ⚑ the group split 8 yes / 2 worse / 6 no | ⚑ the group split 5 yes / 5 worse / 6 no | ✓ yes, it reduces this 15 yes / 1 worse / 0 no | ⚑ the group split 10 yes / 3 worse / 3 no |
| The policy team will propose a bill to Parliament, by the election, to levy a 2% annual tax on properties owned for less than 3 years without structural improvement to the property, making it law by January 1, 2025. discussing (2) | ⚑ the group split 5 yes / 5 worse / 6 no | ⚑ the group split 3 yes / 3 worse / 10 no | ⚑ the group split 6 yes / 4 worse / 6 no | ⚑ the group split 4 yes / 4 worse / 8 no | ⚑ the group split 9 yes / 3 worse / 4 no | ⚑ the group split 8 yes / 5 worse / 3 no |
| Minimizing red tape would increase housing stock and decrease rents. discuss | ✓ yes, it reduces this 13 yes / 1 worse / 2 no | ⚑ the group split 4 yes / 3 worse / 9 no | ⚑ the group split 8 yes / 2 worse / 6 no | ⚑ the group split 4 yes / 5 worse / 7 no | ✓ yes, it reduces this 15 yes / 1 worse / 0 no | ⚑ the group split 10 yes / 3 worse / 3 no |
| The policy lead sends the organisation's MP a one-page request within 30 days, asking the MP to table a Private Members' Bill that reverses the anti-supply national planning-policy changes. discussing (1) | ✓ yes, it reduces this 14 yes / 1 worse / 1 no | ⚑ the group split 3 yes / 3 worse / 10 no | ⚑ the group split 7 yes / 2 worse / 7 no | ⚑ the group split 3 yes / 5 worse / 8 no | ✓ yes, it reduces this 12 yes / 0 worse / 2 no | ⚑ the group split 9 yes / 2 worse / 3 no |
Highest leverage so far
Increasing housing supply will make it more affordable. reduces 2 of 6 root causes
Reducing regulations can address housing affordability issues. reduces 2 of 6 root causes
We simply do need more units to address housing affordability. reduces 2 of 6 root causes
Reforming local land use controls helps poorer Americans. reduces 2 of 6 root causes
Political impediments need to be addressed for new housing supply. reduces 2 of 6 root causes
The policy team lobbies the new government to reverse the anti-supply changes to national planning policy by Q2 2023. reduces 2 of 6 root causes
Upzoning will make the broader region more affordable. reduces 2 of 6 root causes
Minimizing red tape would increase housing stock and decrease rents. reduces 2 of 6 root causes
The policy lead sends the organisation's MP a one-page request within 30 days, asking the MP to table a Private Members' Bill that reverses the anti-supply national planning-policy changes. reduces 2 of 6 root causes
THE ACTIONS ON THE MAP
Showing every action the room judged: it acts directly on 2 of the 6 root causes. It does not act directly on 4.
Read from the squares the room settled at Actions, nothing else. A root in green is reduced by at least one of the shown actions; in grey, none of them acts on it directly; a red outline means one of them makes it worse.
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Each number on the map marks a root cause that action reduces.
① Increasing housing supply will make it more affordable.
② Reducing regulations can address housing affordability issues.
③ We simply do need more units to address housing affordability.
④ The organisation will implement a transparent and equitable home-buying program for first-time buyers, with strict affordability criteria and limited allocation per applicant.
⑤ Adding taxes will reduce the supply of homes.
⑥ The people lead publishes a quarterly report showing the percentage of new hires and open roles based outside the top-5 metro areas, with a target of 30% by Q4 2026.
⑦ Reforming local land use controls helps poorer Americans.
⑧ Political impediments need to be addressed for new housing supply.
⑨ The policy team lobbies the new government to reverse the anti-supply changes to national planning policy by Q2 2023.
⑩ Upzoning will make the broader region more affordable.
⑪ The policy team will propose a bill to Parliament, by the election, to levy a 2% annual tax on properties owned for less than 3 years without structural improvement to the property, making it law by January 1, 2025.
⑫ Minimizing red tape would increase housing stock and decrease rents.
⑬ The policy lead sends the organisation's MP a one-page request within 30 days, asking the MP to table a Private Members' Bill that reverses the anti-supply national planning-policy changes.
FROM ACTIONS TO A PLAN
The grid judged each action on its own. A plan is a set of them the room would carry out together.
Members put plans together from the actions that reduce a root cause, and the room compares the plans two at a time, at three quarters of the votes cast, as it judged everything else. Each plan shows which root causes it acts on directly, which it does not, and which it makes worse.
The steward can open a plan comparison.
What we expect to follow
Predictions about the actions: what each should change, how to measure it, and when to check. On the date, someone who was in the room writes what actually happened beside it.
why
A map says which actions move which causes. It does not say whether anyone did them, or whether anything changed. An entry here is a prediction with a date and something to measure, written after the map settled. When the date comes, what actually happened is written beside it and the prediction stays as it was: a wrong one is the useful kind. Nobody voted on any of this and it changes nothing the room found.
due 04 Oct 2027
actionIncreasing housing supply will make it more affordable.
we expectTo decrease by 10% in the next 12 months
measured byMedian housing price index
guessesthe room: 200 (median of 18, spread 7 to 587587)