ADU rules in Bernalillo County, NM — also called accessory dwelling unit regulations or granny flat ordinances — cover setbacks, owner-occupancy, parking, and permit requirements.
ADU regulations in unincorporated Bernalillo County are governed by the county zoning code (Appendix A). Permitted uses and density vary by zone district and development area. Building permits required through County PDS. Contact (505) 314-0350 for specific zone requirements.
New Mexico has no statewide ADU mandate. Bernalillo County regulates accessory dwelling units through local zoning. Albuquerque and Santa Fe have adopted ADU-friendly zoning amendments. Common conditions: maximum size (typically 600 to 800 sq ft), setback requirements, owner-occupancy may be required. Adobe and traditional NM construction methods are commonly used for ADUs. Building permits required for any habitable structure. Water and sewer capacity may affect ADU approval.
Unpermitted ADU: standard building code enforcement. May require demolition or legalization. Occupying unpermitted dwelling: code violation.
Bernalillo County, NM
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See how Bernalillo County's adu rules rules stack up against other locations.
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