Northern Arizona University: Can an investor rely on a pre-approved Flagstaff ADU model plan without obtaining a building permit?
DIRECT ANSWER
Original source observation: October 16, 2026. Primary-source review: October 17, 2026. Confirm current dates, costs, eligibility and availability with the linked publisher. Campus facts and general planning guidance do not determine an individual property's lawful use, employment benefits or mortgage eligibility.
No. Flagstaff states that an approved City building permit is still required before constructing an ADU, including a model-plan ADU; the City’s same-as review checks whether the plan fits the site and meets standards such as height, access, and utilities. Make permit issuance and any required zoning or historic-district approvals a closing or construction due-diligence item rather than starting work based only on the model plan.
Sources & verification
- www.flagstaff.az.gov Independently reviewed primary source
- www.flagstaff.az.gov Independently reviewed primary source
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