NMSA 3-21A — Manufactured Home Siting Non-Discrimination (NM)
Tracked preemption from the New Mexico overlay bundle.
Overview
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Effective
1991-01-01
Sunset
—
Authority
state
Scope
state:NM
Other New Mexico preemptions
WIPP (Carlsbad) Federal Radioactive Waste CorridorMilitary AICUZ / Federal Installation Overlays (Kirtland AFB, Holloman AFB, WSMR, Cannon AFB)N.M. Const. Art. X § 6 — Constitutional Municipal Home Rule (Charter Cities)NMSA 3-21 — Municipal/County Zoning Enabling Act (Dillon's Rule Baseline)NMSA 3-21-2 / 3-21-6 — Extraterritorial Joint Zoning Authority (EZA/ELUC, SFEZO)Los Alamos County / LANL Federal–County Hybrid GovernanceFederal-Land Jurisdiction Carve-Out (BLM / USFS / NPS / State Trust Lands)Acequia / Community Ditch Overlay (NMSA Ch. 73)
Trigger predicate
When this evaluates true for a parcel, the law's preempted fields take precedence over base zoning.
parcel.base_zone_category ∈ {res_sf}Preempted fields
2 fields on the base district schema are rewritten when the trigger fires.
| Field | Op | Value | Note |
|---|---|---|---|
base_districts[category=res_sf].allowed_uses | add | manufactured_home_hud_code | HUD-Code manufactured homes permitted wherever site-built single-family dwellings are permitted, provided § 3-21A-4 standards (roof pitch, siding, permanent foundation, size/age) are met |
base_districts[category=res_sf].categorical_exclusion_of_manufactured_housing | waive | — | Legacy zoning text categorically excluding manufactured homes from SF districts is unenforceable against compliant HUD-Code units |
Citation
Authority source
NMSA 1978 §§ 3-21A-1 through 3-21A-6 (Manufactured Home Siting)
§ NMSA 3-21A-4 (siting standards) + 3-21A-2 (non-discrimination)
Research notes
Targeted, narrow preemption — classic 1980s-1990s non-discrimination-against-manufactured-housing statute. Does NOT preempt generally-applicable design standards, lot-size minimums, or setbacks that apply equally to site-built homes. Cities cannot have zoning text that categorically excludes HUD-Code units from SF districts; where legacy text does so, the text is void as applied. This is currently the only enacted statewide categorical zoning override in New Mexico.