2026-08-31 · Alaska · Compliance

Juneau adopted the first phase of a rewrite of its land use code in April 2025, and one of the changes makes detached accessory dwelling units materially easier to build.

Ordinance 2025-15am was presented on January 27, 2025 and adopted April 7, 2025, taking effect 30 days later. It reworks Title 49 — rules of construction, permits, equivalent use determinations, the split between minor and major developments — and adds a definition and standards for accessory dwelling units and caretaker units.¹

The ADU standards

Three parameters do most of the work:

• a detached accessory dwelling unit may be up to 1,000 square feet
• a five-foot minimum rear setback
• the unit is exempt from the underlying zone's density calculation

That third item is the consequential one. Where an ADU counts against permitted density, it competes with the primary dwelling for the same allowance and is often infeasible on a developed lot. Exempting it removes that constraint outright.

What the ordinance does not address

A full-text reading of the adopted ordinance returns zero occurrences of covenant, association, condominium or common interest.

This is the third Alaska municipal land-use measure in eighteen months to expand what may be built or operated on residential property while remaining entirely silent on the private restrictions recorded against much of it — alongside Anchorage's short-term rental ordinance and its pending missing-middle overlay.

1. Ordinance 2025-15am, City and Borough of Juneau — Title 49 Land Use Code rewrite, Phase 1 (adopted April 7, 2025), signed final text ↩
2. Short-term rentals, City and Borough of Juneau Finance Department (registration requirements and Ordinance 2025-23(b)am marketplace facilitator obligations) ↩