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State-required internal accessory dwelling units explained; council to defer detached ADU rules
Summary
Councilors reviewed state-mandated internal accessory dwelling unit (IADU) rules and discussed detached ADU (external) standards, with council agreeing to adopt IADU provisions required by state law and follow up on detached-unit septic and lot-size issues in January.
At a Dec. 10 public hearing, Mayfield Town staff explained state requirements for internal accessory dwelling units (IADUs) and proposed local standards to ensure safety and sanitary conditions.
Speaker 2 summarized the state mandate that cities allow internal accessory dwelling units and described the town’s proposed requirements: an exterior entrance to the unit, separate kitchen/bath/bedrooms, fire-rated separation meeting the International Building Code and review of septic capacity because many Mayfield houses use septic systems. “There are some requirements with that in our ordinance,” Speaker 2 said, describing the separation and building-code expectations.
Council members agreed the IADU rules are required by state law and can be advanced; Speaker 7 urged separating the internal (IADU) and external (detached ADU) provisions into distinct items because detached units raise additional septic and lot-coverage concerns. Council indicated it will place the state-mandated IADU language on the January agenda for formal action and continue working on detached-ADU standards (septic approval, site-plan requirements and accessory-building coverage limits) at a later date.
No formal vote on ADU ordinances occurred on Dec. 10; staff will prepare ordinance language and site-plan/engineering requirements for council review in January.
