The central finding in this brief is a boundary: federal manufactured-housing standards describe how homes are built, while local zoning and permit records describe what a jurisdiction allowed or recorded at a location. Those sources can be used together, but one should not be presented as a substitute for the other.
Why the distinction matters
The U.S. Department of Housing and Urban Development administers the federal manufactured housing program and publishes the construction and safety standards framework. The Electronic Code of Federal Regulations contains the standards in 24 CFR parts 3280 and 3285. A county permit office, planning department, or assessor may hold a separate record about placement, foundation work, occupancy, taxes, or zoning.
That split matters when a buyer, community operator, or researcher asks whether a home is allowed at a specific address. A federal code reference can explain the home's construction requirements. It cannot prove that a local placement permit was issued. A local parcel record can show an assessment or permit entry. It cannot by itself certify the home's construction compliance.
Define the unit of record
Before collecting data, write down what one row means. Possible units include a home, a permit application, an issued permit, a parcel, a lot, a zoning case, or a community. Mixing those units creates inflated counts.
Use at least five fields: record type, address or parcel identifier, decision date, issuing office, and source link or document number. Add the home's serial number when the record concerns a specific home. If a record covers a community rather than one lot, say so in the record type.
Keep applications, approvals, denials, withdrawals, and expired permits as separate statuses. An application is evidence that someone asked. It is not evidence that the work was approved.
What the public sources contribute
HUD's manufactured housing pages and federal regulations provide the national construction and installation framework. The Census Bureau's manufactured-housing survey pages provide production, shipment, and price datasets. Those datasets are useful context for market activity, but they do not identify whether a particular address has a current local permit.
Local governments may publish zoning maps, code text, permit searches, agendas, parcel viewers, and inspection records. The format and retention period vary. Some offices require a records request or an in-person lookup. Capture the office name, URL, access date, and document number so another reviewer can repeat the search.
A practical evidence table
| Question | Best starting source | What it can support | What it cannot prove |
|---|---|---|---|
| What construction standards apply? | HUD and 24 CFR | Federal code framework | Local approval at one address |
| Was placement or work permitted? | Local permit office | An agency record or status | Compliance with every federal standard |
| What use is allowed? | Local zoning code and map | Zoning designation and stated rules | A permit that was never issued |
| What parcel is involved? | Assessor or recorder | Parcel identifier and ownership record | A home's complete title history |
| How active is the market? | Census manufactured-housing data | National or regional context | One community's current inventory |
The table keeps the source matched to the question. It also makes it easier to explain an unresolved item instead of filling the gap with an assumption.