U.S. housing shortage is the real affordability problem — and demand fixes won’t help

The recommendation is specific: tax land more than buildings so that large lots are taxed higher relative to small lots. That would put a price on low-density use where land values are highest. The report cautions that this is a consequential reform; it should be phased in gradually to avoid disruptive effects.

Federal and state roles: carrots as well as sticks

Because local politics are the proximate constraint, higher levels of government have two leverages that can work together:

• Offer fiscal rewards to communities that approve more housing (grants, higher formula shares). The Road to Housing Act of 2025 is one recent example that links grant dollars to permissive local policies.
• Set national or state standards for technologies like modular housing so that firms can scale production across jurisdictions rather than face a patchwork of approvals.

Those tools address both short- and long-run problems. Grants can change local incentives quickly, while national standards can unlock manufacturing-scale solutions for modular homes over time.

What this means for buyers, investors and expats

The policy picture is messy and slow-moving. For anyone making decisions in the U.S. real estate market, the Brookings findings imply concrete actions and risks.

For prospective homebuyers:

• Expect local rules to be the major determinant of price and availability. Markets with restrictive zoning will remain tight unless regulation changes.
• Demand-side programs that lower monthly payments without increasing supply may raise prices in the short run. Watch for policy announcements but evaluate whether they change the local housing stock.

For property investors:

• Supply-constrained markets can still deliver price appreciation, but they are also politically fragile; new local reforms can change returns.
• Opportunities may exist where states or municipalities are actively reforming zoning or offering grants for development. Those locations are where new supply is likeliest to flow.

For developers and builders:

• Standardization of modular construction rules at state or national level would make factory-built homes more feasible and cheaper to scale.
• Reducing permit uncertainty through by-right approvals will lower holding costs and financing risk, improving project viability.

Practical investor checklist:

• Monitor state-level zoning reform bills and the allocation of federal grant funds under programs like the Road to Housing Act of 2025.
• Favor projects with by-right entitlements or in jurisdictions making permit reviews faster and more predictable.
• Consider ADU-friendly markets: adding an ADU can increase rents and asset value with shorter construction times.
• Factor in tax structure: areas exploring land value taxation reforms could change development incentives and long-term land values.

Risks and political constraints

There are real political barriers to the supply reforms the report recommends. Local homeowners often oppose densification; local governments rely on property taxes and fear change. Tax reform to shift burdens onto landowners will face major pushback. Even when zoning changes are enacted, the construction industry’s capacity and the costs of materials and labor limit how fast new homes can appear.

Timing is another constraint. The report is clear that there is no single supply-side intervention that will quickly produce a large surge in housing. That means policymakers and market participants must plan for a multi-year transition and not expect overnight relief from high prices.

What to watch next: indicators that supply reforms are working

Not all reforms are equal. To judge if a jurisdiction is moving in the right direction, watch these indicators:

• Increases in building permits issued per year, especially for multifamily units.
• Change from discretionary rezoning to by-right entitlements in local codes.
• New ADU applications and approvals rising.
• State-level adoption of uniform standards for modular homes.
• Allocation of federal or state housing grants tied to permitting outcomes (track where Road to Housing Act funds go).

When these metrics change together, the chance of a meaningful rise in supply increases.

Frequently Asked Questions

Q: If demand-side policies raise prices, does that mean lower mortgage rates are bad?

A: Lower mortgage rates are not intrinsically bad; they help individual buyers afford monthly payments. But when supply is inelastic, lower rates can bid up prices without increasing the number of homes. Effective policy couples demand help with supply measures or focuses on supply directly.

Q: Will upzoning fix affordability fast?

A: No. Upzoning is necessary but not sufficient for rapid change. The report finds upzoning alone is unlikely to produce a large or immediate increase in housing supply because financing, construction capacity, and local approvals remain bottlenecks.

Q: Are ADUs a significant solution?

A: ADUs are a useful part of the toolkit. They add units incrementally, often with lower cost and quicker timelines than large developments. They will not solve affordability by themselves but can help in neighborhoods where they are permitted at scale.

Q: What is land value taxation and why would it help?

A: Land value taxation shifts tax burden from buildings to land. It raises the cost of holding underused, high-value lots and encourages denser use of land where it is most valuable, aligning tax incentives with higher-density development.

Bottom line: focus on supply and watch the policy levers

The Brookings report frames a clear policy direction: to improve housing affordability in the United States we must prioritize increasing the supply of housing and make policy costs visible. Demand-side subsidies and long-term mortgage gimmicks that do not expand units are unlikely to improve affordability and can make it worse. The combination most likely to change outcomes includes permitting reform (more by-right construction and greater state involvement), targeted fiscal incentives like the Road to Housing Act of 2025, standardized rules for modular housing, and tax reforms that make land more expensive to hold idle.

For buyers and investors, the practical takeaway is to follow local permitting rules and state incentives closely; those signals tell you where housing supply is likeliest to rise over the coming years. Start watching which states pass changes to zoning reform and which municipalities receive federal grant bonuses for increased permitting—those are the policy moves most likely to shift the market within 3–5 years.