HUD Chassis-Free Action Plan: Steps Still Ahead

HUD’s chassis-free action plan sets out seven areas of federal work following Congress’s change to the manufactured-home definition. Announced on October 7, 2026, the plan does not itself approve a home design, foundation or development. For developers evaluating projects as of October 9, the key distinction is between a changed law, standards under development and documented approvals for a particular home and site.

What changed in law, and which dates matter

The 21st Century ROAD to Housing Act became law on July 11, 2026. Section 301 changed the statutory definition to allow manufactured homes built “with or without a permanent chassis.” It also directs HUD to develop revised standards in consultation with the Manufactured Housing Consensus Committee, or MHCC.

The law sets a July 11, 2027 deadline for HUD to adopt minimum energy-efficiency standards. Initial state certifications addressing equal treatment of chassis-free homes are generally due then, with two years after enactment allowed for states whose legislatures meet biennially. These are separate implementation obligations under Section 301, not a universal date when every chassis-free design becomes buildable.

The seven areas of work HUD identifies

The announcement identifies the priorities; the three-page action plan supplies their technical scope.

HUD expressly leaves regulatory outcomes open. Its research office is supporting the energy rule’s regulatory impact analysis. Neither that analysis nor committee advice is an adopted standard.

For installation changes, Section 3285.1(c) distinguishes MHCC recommendations from HUD’s decision to accept, modify or reject them. Accepted or modified recommendations go to public comment. Tracking these changes in housing regulation therefore means following the eventual rules and their effective provisions.

Why construction and installation need separate answers

The existing HUD Code explains the engineering problem. Section 3280.902 defines the chassis as a transportation system that includes a frame supporting the home during transport and on site. Section 3280.305 describes connections running from roof to walls, floor and chassis to resist structural loads. Removing the permanent chassis changes an element embedded in that design approach.

For a proposed chassis-free home, the practical questions include how the structure is supported during delivery, where it can be lifted and how its loads reach the foundation once installed. The engineering details need to address each stage, beyond the finished floor plan.

Part 3285 separately requires approved manufacturer installation designs and instructions. Its foundation provisions tie the design to site conditions, the home’s features and its design loads; alternative foundation systems already have engineering and compliance conditions. Sections 3285.2 and 3285.301 make the foundation package a distinct item to verify during project and site planning, even when the factory design is settled.

Those distinctions also matter when comparing bids. In a hypothetical comparison, a chassis-free home could have a lower factory price but require separately priced lifting work, foundation engineering or site assembly. Until those items are specified, the factory-price difference does not establish a saving on the installed project.

A related proposal predates the law. HUD’s June 12, 2026 proposed rule addressed upper-floor sections of multistory homes while retaining a chassis on the lowest-floor sections. That proposal is narrower than a fully chassis-free home and should not be read as general permission for one.

Larger multifamily buildings require a separate code answer

The code in place at the announcement defines a dwelling as a structure containing one to four dwelling units. That existing scope helps explain why the plan treats a code for five or more units as a separate undertaking. Removing the chassis requirement does not, by itself, establish approval for a larger building. See the dwelling definition in Section 3280.2.

Consider a hypothetical six-unit building assembled from factory-made sections. The number of sections and the absence of a permanent chassis do not establish which construction standards cover the completed building. Before assuming federal approval in a development budget, obtain the applicable code basis for that six-unit design.

What a developer can verify now

HUD has already highlighted a chassis-free home. In an October 6 release, it described Cavco and UMH Properties’ Grande Arbor as the first HUD Code manufactured house built without a permanent steel chassis. The release identifies a particular home; it does not supply approval terms that another manufacturer or developer can adopt.

The existing alternative-construction process under Section 3282.14 allows HUD to issue a letter addressing specified departures from standards, subject to conditions. If a supplier relies on that route, request the letter and verify that its design and conditions match the proposed purchase. The action plan cannot substitute for that evidence.

For procurement, organize the remaining questions around three sets of documents:

• The approved product package. Obtain the design and quality-assurance approvals. Section 3282.203 requires manufacturer designs and quality-assurance manuals to be approved by a Design Approval Primary Inspection Agency, or DAPIA.
• The installation package. Identify the foundation, anchoring and installation instructions applicable to this home and site, including any approved variations.
• The project approval record. Ask the responsible authorities which site permissions and inspections remain outstanding, and distinguish those from factory approvals.

For new-home construction, resolve those items with the manufacturer, project engineer and relevant approving authorities before fixing a delivery date. If the proposed design depends on a future rule, identify that dependency explicitly in the schedule and purchasing agreement.