Northern Arizona University
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.
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