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County planners begin implementing state ADU law; staff seeks commission direction on affordability carve‑out
Summary
Coconino County staff briefed the Planning and Zoning Commission on required zoning changes under Arizona House Bill 2928, which guarantees up to two accessory dwelling units (ADUs) on single‑family lots and a third ADU on lots one acre or larger. Staff asked commissioners whether the county should require the extra detached ADU on parcels of one
Coconino County staff told the Planning and Zoning Commission in a study session that the county must amend its zoning ordinance to comply with state law enacted as House Bill 2928 and asked whether commissioners want staff to pursue an optional local requirement to restrict one additional ADU as long‑term affordable housing.
What HB 2928 requires Jess McNeely, Community Development, summarized the statutory change: under HB 2928 every single‑family residential lot is entitled to two ADUs — one attached and one detached — both limited to a maximum of 1,000 square feet and the detached ADU may be up to 75 percent of the primary dwelling. For parcels of one acre or larger the statute allows a local jurisdiction to permit a third ADU (a second detached unit) and…
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