---
title: Federal Law No Longer Requires a Steel Chassis Under a Manufactured Home
description: A new federal law makes the steel chassis optional under manufactured homes, and HUD’s rule on it is open for public comment until August 11, 2026.
author: Darie Nani (Editor-in-Chief)
updated: 2026-08-04T17:25:59.087Z
canonical: https://richdadmagazine.com/article/manufactured-home-permanent-chassis-federal-law
image: https://cdn.nanimediahouse.com/manufactured-home-chassis-law-100733.webp
categories: Real Estate
content_type: News
region: United States
publication: Rich Dad Magazine
schema_type: Article
---

Every manufactured home in the United States has been built on a permanent steel chassis because federal law defined it that way. Since July 11 it does not. On the government's own numbers the chassis under an upper floor adds as much as $6,672 to what a buyer pays, and Congress has made it optional. What has not changed yet is anything a family can walk into a sales center and buy, because the construction standards that decide which homes qualify have not been written.

## Congress Struck Four Words From the 1974 Definition

The 21st Century ROAD to Housing Act, H.R. 6644, became Public Law 119-101 on July 11, 2026, with the stated purpose of increasing the supply of housing in America. Title III of the act is headed "Manufactured Housing for America," and section 301 carries the change. It amends the National Manufactured Housing Construction and Safety Standards Act of 1974 by [striking the words "on a permanent chassis" and inserting "with or without a permanent chassis"](https://www.govinfo.gov/content/pkg/PLAW-119publ101/html/PLAW-119publ101.htm). Nothing else in the federal definition moved.

## A Buyer Sees Nothing Until HUD Writes the Standards

Section 301 also directs the Secretary of Housing and Urban Development, in consultation with the manufactured housing consensus committee, to issue revised construction standards for homes built without a permanent chassis. Those standards do not exist yet. When they do, a chassis-free home will carry a distinct label issued by the Secretary, separate from the label on a chassis-built home, and the manufacturer's invoice will carry its own notation setting it apart.

States have a deadline of their own. Within one year of enactment, so by July 11, 2027, each state must certify to HUD that its own laws subject a manufactured home without a permanent chassis to the same rules as one built on a chassis, covering financing, title, insurance, manufacture, sale, taxes, transportation and installation. That list is the practical machinery of buying a house, and it has to be squared away state by state.

## The Chassis Adds Up to $6,672 to the Price of a Two-Story Home

Requiring a chassis under the upper floor of a multistory manufactured home adds $3,300 to $4,600 to the manufacturer's production cost, and $4,776 to $6,672 to what the buyer pays once chassis materials, transportation, installation and labor are counted. Those figures come from estimates that small and large manufacturers gave HUD privately. Weight is the reason. A standard upper-floor chassis runs to more than 2,500 pounds, so the lowest floor and the foundation have to be engineered to carry that dead load, which takes more wood, more concrete and more piers than the house would otherwise need.

## HUD's Proposal Covers Upper Floors Only

HUD published its proposed rule, Revising the Definition of "Manufactured Home" to Lower Housing Costs, on June 12, 2026, a month before the act became law, in response to a presidential memorandum telling agencies to remove administrative barriers that raise the cost of housing. Under the proposal a transportable section serving as part of an upper floor would not need a permanent chassis. Every section forming part of the lowest floor still would. HUD puts the saving at roughly $6,000 per multistory unit and assumes, in its regulatory impact analysis, that 20 to 25 multistory manufactured homes a year would benefit.

## The Alternative Still Open for Comment Would Reach About 60,000 Homes a Year

HUD is also taking comment on a broader option: requiring a permanent chassis under only one transportable section of the lowest floor, rather than under every section of it. That version would cover multi-section single-story homes as well as multistory ones. Single-story multi-section designs account for about 55 percent of new manufactured homes produced in recent years, roughly 60,000 homes annually, on the 2024 Survey of Manufactured Housing figures HUD cites. [Comments on the proposal, including that alternative, close on August 11, 2026](https://www.federalregister.gov/documents/2026/06/12/2026-11851/revising-the-definition-of-manufactured-home-to-lower-housing-costs).

## The Consensus Committee Asked for the Chassis to Stay on the Bottom Floor

The manufactured housing consensus committee, which HUD is required to consult on these standards, recommended keeping the permanent chassis requirement on the lowest floor and approved that recommendation unanimously. HUD incorporated it into the proposed rule. Modular building manufacturers and a modular building association wrote to HUD generally opposing the proposal before the committee met.

Clayton, a national builder of attainable single-family housing based in Maryville, Tennessee, says making the chassis optional will lower costs, allow more attractive exteriors and let it put multistory homes on narrower lots, including urban infill and small-lot subdivisions, while keeping HUD's safety and quality standards. Take the chassis out, the company says, and the home sits closer to the ground on a permanent foundation.

## FAQ

**Q: What is a chassis on a manufactured home?**
It is the permanent steel frame the home is built on and hauled to the site on. A standard one used under an upper floor weighs more than 2,500 pounds, which is why the floor and foundation beneath it have to be engineered to carry the extra load.

**Q: What was the permanent chassis requirement?**
Federal law defined a manufactured home as one built on a permanent chassis, so every home in the category had to have one. Congress took that out of the definition in July 2026. HUD's construction standards still have to catch up, and its current proposal would keep requiring a chassis under the lowest floor whatever is built above it.