2026 08 14 Feed Construction Physics Road TO Housing ACT Part II

Summary

Part II of Potter's read of the 21st Century ROAD to Housing Act (Part I was ingested 2026-08-06) walks Title II (Building More in America, 13 sections) and Title III (Manufactured Housing, 4 sections) and scores each on whether it relaxes a binding constraint. The load-bearing claim is a negative one, and it is the useful one for this project: a bill can target real constraints across seventeen sections and still move almost no supply, because "their actual impact will be a function of how much the constraint it targets was actually binding and how strong the incentive is, which in general is difficult to know." No aggregate supply estimate is offered, and no homebuilder or building-product company is named — which is precisely why this is a base-rate input rather than a trade.

Article

Title II — Building More in America

• §201 — shifts HUD grant allocation to Opportunity Zones. "The likely impact of this section on housing supply is almost definitely zero."
• §202 — home repair grants. Potential to preserve stock by preventing deterioration, but quality-focused rather than supply-focused.
• §203 — raises bank investment caps for Low Income Housing Tax Credit projects (~70,000 units/year). Prevents a future constraint rather than relieving a current one.
• §204 — enables CDBG funding ($3.3B annually) for affordable housing, up to 20% per jurisdiction. Mechanics unclear; "error bars here are quite wide."
• §205 — delegates NEPA environmental reviews to local entities; could accelerate review by 15–30% where jurisdictions have the capacity.
• §206 — exempts HUD activities from NEPA; categorical exclusions for projects up to 15 units, office conversions, and infill housing. "Probably the most important section in the bill so far."
• §207 — grants for zoning/regulatory planning; addresses a constraint that is "probably not particularly binding."
• §208 — Innovation Fund — $200M annually, awards up to $10M. "Directly incentivizing the thing we want (increased housing supply)", though the motivational force is uncertain.
• §209 — pre-approved housing designs. "Another positive but marginal section"; developers' desire for control limits adoption.
• §210 — RESIDE Act — vacant-building conversion, est. ~$100M, limited to abandoned/unsafe buildings and required to keep an affordable majority. "Probably a pretty small number" of projects.
• §211 — raises FHA multifamily mortgage insurance limits per unit. Very small program; prior limit increases did not change the trajectory.
• §212 — RAD — raises the conversion cap by 100,000 units (455,000 → 555,000). Some projects involve demolition and new construction (Fulton / Elliott-Chelsea in NYC adds 3,454 units). Potentially "a big deal."
• §213 — BUILD Now Act — ties high-cost jurisdictions' CDBG funding (10% reduction) to their housing growth rate; parallels the federal speed-limit / drinking-age highway-funding pressure tactic.

Title III — Manufactured Housing

• §301 — eliminates the permanent steel chassis requirement (5–10% cost reduction). Potter is skeptical of uptake because jurisdictions can restrict HUD-code homes regardless: "Expect this change to possibly reduce the price…by a few percentage points, but probably not result in a huge uptick."
• §302 — HUD study of FHA construction-financing barriers for modular housing. No mandate to act; HUD has held the authority since 1974, and it "probably only applies to FHA-insured multifamily projects, which…is a very small housing universe."
• §303 — increases FHA loan limits for manufactured-home and property-improvement loans and allows ADU financing. Context on program scale: FHA made three manufactured-home loans in 2021. Impact "probably not by much."
• §304 — PRICE Act — manufactured-home-park infrastructure; makes the program permanent ($225M / 17 projects in 2024). The "bigger question is how much of a difference it makes to be an official, authorized program."

Conclusion

"The biggest potential impacts are concentrated in a small number of sections (the Innovation Fund, the RAD limit increase, the manufactured home chassis rule), but their actual impact will be a function of how much the constraint it targets was actually binding and how strong the incentive is, which in general is difficult to know."

"There are a bunch of sections that target real problems…but probably don't have enough juice to make much of a dent in them."

Named entities: Fulton and Elliott-Chelsea redevelopment (NYC RAD project); LIHTC, CDBG, FHA multifamily insurance, Public Housing / Section 8 / Housing Choice Voucher; the manufactured housing and modular construction sectors. No specific homebuilders or building-product companies are named.