Municipal Alpha · Maine, on the record · Accessory dwelling unitReading depth
Topic · Development · Maine · public record

Accessory dwelling unit across Maine

What this decidesWhether an ADU can be built on a lot, and under what conditions.

Local rules for accessory dwelling units: where they are allowed, size, parking and owner-occupancy limits, wastewater conditions, and the ordinance work implementing state law.Our definition of the class.

Your own viewAccessory dwelling unit, cut to what you need to know
20
towns on the record
139
events on the record
109
in the last 90 days

What this page is for one topic across Maine's municipalities on the public record: where it is moving, which towns carry it, the documents behind it. A subscriber sees it cut to their own towns and questions. If it does not, write to us; that is what changes the next edition.

Where it is on the record20 towns, most movement first

Every town carrying this class on the record through 2026-08-31: events in the last 90 days against the 90 before, the same 90-day count as a rolling line, whose right-hand point is that number, the latest document.
Bangor42 events35 in 90 dayslatest 2026-08-31, Housing- Pre-approved plans - Accessory Dwelling U
Bar Harbor35 events33 in 90 dayslatest 2026-08-07, Agenda and Package for the May 12, 2026 Planning B
Eliot31 events31 in 90 daysnew on the recordlatest 2026-08-07, Planning Board Regular Meeting Agenda (PDF)
Yarmouth5 events2 in 90 days ▼ -33.3%latest 2026-06-10, Planning Board — PB Workshop 11-12-25
Lewiston3 events2 in 90 daysnew on the recordlatest 2026-08-31, Accessory Dwelling Unit Recordation PDF
Biddeford2 events2 in 90 daysnew on the recordlatest 2026-08-31, PY21 CDBG CAPER, PR26
Naples2 events1 in 90 days ▬ +0.0%latest 2026-07-18, PB Meeting Minutes 3 3 2026
Madawaska1 event1 in 90 daysnew on the recordlatest 2026-08-14, Minutes
Rockport1 event1 in 90 daysnew on the recordlatest 2026-08-19, Housing Workshop 2 Draft Background Paper
South Berwick1 event1 in 90 daysnew on the recordlatest 2026-08-14, FINAL South Berwick Comprehensive Plan Appendix
Gorham3 events0 in 90 dayslatest 2026-05-31, town Council meeting agenda
Hermon3 events0 in 90 dayslatest 2026-04-23, MINUTES.04212026
Cumberland2 events0 in 90 dayslatest 2026-03-06, Planning Board Agenda January 20, 2026
Rockland2 events0 in 90 dayslatest 2025-10-08, 2025-10-08 Housing Task Force Mtg Agenda (PDF)
Caribou1 event0 in 90 dayslatest 2026-02-26, Minutes
Falmouth1 event0 in 90 dayslatest 2026-02-25, WasteWaterComments.pdf
Limington1 event0 in 90 dayslatest 2026-04-10, Download
Presque Isle1 event0 in 90 dayslatest 2026-02-28, CHAPTER 52 Ordinance of Commercial Displays of Nud
Rangeley1 event0 in 90 dayslatest 2025-09-16, Chapter 38 Zoning - amended 09.16.25
State of ME1 event0 in 90 dayslatest 2026-02-26, LD2173: An Act to Update the Laws Regarding Housin

Who this typically touches

Business types a matter in this class typically reaches. Our inference from the class, not the record's words; a specific organization is named on these pages only when the record itself names it.

Likely to gain: small residential builders and designers; modular ADU manufacturers; septic and site designers (ADU approvals commonly turn on wastewater capacity).

Worth watching: residential lenders and appraisers (an allowed ADU changes the income and the value a property supports).

One scope up

The same class at a wider scope: Accessory dwelling unit in New Hampshire · Accessory dwelling unit in Massachusetts · Accessory dwelling unit in Maine · Accessory dwelling unit in California · Accessory dwelling unit in Utah · Accessory dwelling unit in Vermont · Accessory dwelling unit across the country.

Counts and dates are taken from the documents on the record in this window. The class and its definition are ours.