HUD Proposes Rule to Let Manufactured Homes Go Multi-Story

The U.S. Department of Housing and Urban Development has proposed a rule that would fundamentally change how multi-story manufactured homes are designed and built. Published in mid-June 2026, the proposal would allow upper-level sections of manufactured homes to be transported and assembled without a permanent steel chassis — the structural frame that current regulations require throughout the entire structure. It is a technical change, but its implications stretch well beyond engineering.

Why a Steel Frame Under the Second Floor Has Been a Problem

Under current HUD rules, every section of a manufactured home — including upper floors — must be built on a permanent chassis. For a single-story home, that requirement is straightforward. For a two-story structure, it creates real complications. Builders have to cut stair openings into steel frames, weld components together in ways that conventional framing avoids entirely, and work around rigid structural steel when routing plumbing, electrical, and mechanical systems. The result is a more expensive, less flexible product.

Sean Roberts, CEO of manufactured housing developer Villa and a member of HUD's Manufactured Housing Consensus Committee, told HousingWire that the chassis requirement on upper floors adds roughly $5,000 to $10,000 per home in additional cost. Removing it from second stories would allow those floors to be engineered more like conventional upper floors — with cleaner ceiling heights, better stair placement, and more efficient layouts overall.

The Manufactured Housing Institute, the industry's primary trade group, has voiced strong support for the proposal. CEO Lesli Gooch stated that eliminating the fixed steel frame from upper floors removes major design barriers and reduces unnecessary material waste.

From Rural Workaround to Urban Housing Tool

More than half of all manufactured homes in the United States currently sit in rural areas, where land is plentiful and the single-story format has worked well for decades. The new proposal is aimed squarely at changing that geography.

In high-cost markets — California's Bay Area, Denver, parts of the Pacific Northwest — the economics of housing development depend on density. You cannot make a project work financially if you can only build one unit per parcel. The ability to stack dwelling units vertically, at manufactured-housing cost levels, is what makes this rule change meaningful in those markets.

Villa is already working on a project in Santa Rosa, California, where two-story manufactured homes are being incorporated into a community. Roberts told HousingWire that the proposed rule would make projects like that significantly more feasible. During Cavco Industries' Q4 2025 earnings call, company President and CEO William Boor made a similar case, arguing that relaxing chassis requirements could open entirely new urban and suburban market opportunities for the manufactured housing industry.

This proposal also builds on a 2024 HUD update that already permits up to four dwelling units within a single manufactured housing structure — meaning duplexes, triplexes, and small multi-family configurations are now on the table under the HUD Code framework.

What This Shift Means If You Are Selling a Home Now or Soon

For sellers, this rule change matters less as an immediate transaction event and more as a signal about where the housing supply is heading — and what that means for your market position over the next few years.

First, more housing supply is coming to land-constrained markets. If manufactured housing developers can build multi-story, multi-unit structures at costs meaningfully below site-built construction, they will pursue infill lots and urban parcels that were previously uneconomical. That adds inventory in markets where sellers have historically had pricing power. It will not happen overnight — the rule is still in the proposal stage and must go through a public comment and finalization process — but the direction is clear.

Second, the stigma around manufactured housing is eroding at the policy level. HUD is actively working to make manufactured homes more competitive with site-built construction in design quality and density. Sellers of conventional homes should be aware that the comparison set is changing. A well-designed two-story manufactured home in a high-cost metro is a different product from the single-wide rural unit that many buyers still picture when they hear the term.

Third, if you own a manufactured home and are thinking about selling, this is a moment worth paying attention to. Policy momentum is running in favor of the asset class. Lender and appraiser familiarity with manufactured housing has been growing, and further federal support for design innovation could gradually improve resale values and financing access — particularly for newer HUD-code homes built to current standards.

For sellers trying to understand what their home is worth in a shifting supply environment, getting a clear-eyed look at current market conditions in your specific area is the right starting point. Tools that generate an instant offer range based on local data can help you benchmark before you commit to a timeline.

Timeline and Next Steps for the Rule

HUD's proposal is not yet final. Federal rulemaking requires a public comment period before any changes take effect, and the manufactured housing industry has noted that additional chassis-related requirements — including rules about exterior exit doors — may warrant separate review down the road. The proposal also complements legislation in the 21st Century ROAD to Housing Act, which would address chassis requirements on first floors as well, suggesting that Congress and the executive branch are moving in the same direction on this issue, even if the full regulatory picture is still being written.

Sellers in markets where manufactured housing development is active — California, Colorado, and other high-cost states where Villa and similar developers operate — should watch the finalization timeline. The rule clearing is not a distant possibility; it reflects a policy consensus that has been building for several years.