Research snapshot · Development · 31 August 2026

Accessory dwelling unit in Massachusetts: 33 towns on the record, the pace easing

This page is a snapshot, cut 31 August 2026, of a topic that moves. Below is the shape of the movement, read from the towns' own meeting records, and the way to get a view of it that stays current.

Already Known topic.Our definition of the class, 29 August 2026.

Snapshot taken 31 August 2026, based on 64 dated municipal records flagged as accessory dwelling unit in Massachusetts, spanning 33 municipalities. The topic moves; a later cut supersedes this page.

What this page is for one topic at state or national scope, told as a story: how it arrived, the shape of its movement, a dated snapshot of a moving record, and the door to a view of it that stays current. If it does not, write to us; that is what changes the next edition.

The story so far

The record starts in Peabody, 24 October 2024. Since then 33 Massachusetts towns have put the topic on a meeting record, the newest of them Burlington on 10 June 2026.

The last 90 days put 2 meetings on the record, well down from 21 in the 90 days before.

It runs through the rooms where budgets and ordinances are made: Legislature — 194th General Court, Planning Board and Select Board.

The shape of the movement

Dated meetings on the record at this scope, quarter by quarter, and the same 90-day count as a rolling line, whose right-hand point is that number. Counts of documents, never a reading of what they decided.
QuarterMeetingsTowns
Sep 2025 to Nov 2025133
Dec 2025 to Feb 2026188
Mar 2026 to May 20262016
Jun 2026 to Aug 2026 (current)33

a rolling 90-day total, so the right-hand point is that same 90-day count. The busiest stretch was Mar 2026 to May 2026, with 20 meetings.

The towns on the record33, earliest first

Every Massachusetts town carrying the topic, the earliest first, each with its latest document.
Peabodyearliest 2024-10-24 · 1 meeting · latest 2024-10-24 · the minutes 10/24/24 Minutes
Winthropearliest 2025-01-07 · 1 meeting · latest 2025-01-07 · the posted document TM REPORT.1-7-25
Ipswichearliest 2025-01-27 · 1 meeting · latest 2025-01-27 · the document (1)Ipswich ADU Guidelines_Rev_012725_202502060814129596
Marshfieldearliest 2025-03-04 · 1 meeting · latest 2025-03-04 · the minutes Board Of Health — 03-10-2025 revised 3.4.25 posting (002)
State of MAearliest 2025-05-02 · 24 meetings · latest 2026-02-12 · the document H4020: Relative to owner occupancy requirement for accessory dwelling units
Sandwichearliest 2025-05-05 · 1 meeting · latest 2025-05-05 · the document Annual Town Meeting Warrant May 5, 2025
Medfordearliest 2025-05-27 · 1 meeting · latest 2025-05-27 · the agenda City Council Regular Meeting 2025-05-27 — 2025.05.27 - City Council Regular Meeting Agenda With Attachments
Graftonearliest 2025-08-01 · 3 meetings · latest 2025-09-05 · a report Week Ending September 5 2025
Andoverearliest 2025-10-01 · 2 meetings · latest 2026-03-30 · the document 03092026 P21 ADU Adjustment Slides
Weymouthearliest 2026-01-12 · 1 meeting · latest 2026-01-12 · the minutes Minutes — Planning & Community Development
Hollistonearliest 2026-01-13 · 1 meeting · latest 2026-01-13 · the minutes AgendaCenter minutes
Harwichearliest 2026-01-20 · 1 meeting · latest 2026-01-20 · the agenda One Time Event 2026-01-20 — Board of Health Packet January 01.20.2026 (PDF)
Pepperellearliest 2026-02-17 · 2 meetings · latest 2026-03-09 · the minutes Minutes — Select Board
Brooklineearliest 2026-02-18 · 4 meetings · latest 2026-04-21 · the agenda Advisory Committee Meeting 2026-04-21 — 2026 04 21 Advisory Committee Meeting Agenda
Cantonearliest 2026-02-18 · 1 meeting · latest 2026-02-18 · the agenda Planning Board Meeting

And 18 more towns on the record, in an account view.

From the record

The most recent documents behind this page, one per town. Each link opens the town's own file.

11 June 2026 · Milton Planning Board

the agenda, on the town's own site Planning Board Agenda (PDF)

10 June 2026 · Burlington Zoning Bylaw Review Committee

the agenda, on the town's own site Regular Meeting

2 June 2026 · Hull

the agenda, on the town's own site AgendaCenter agenda

1 June 2026 · Auburn Zoning Bylaw Review Committee

the agenda, on the town's own site Zoning Bylaw Review Committee

Companies on this record89 companies, 31 documents

Named in the same documents that carry this topic, read from the record itself: the firms designing, building and advising the work, each with where the record places them:
Central Mass Mosquito Control Project (CMMCP)Grafton
ComcastFranklin, Medford
VerizonFranklin, Medford
Weston & SampsonRockland, Webster
ModernaGrafton
WRPSRockland
ADU Design Guidelines Working GroupLongmeadow
AG's OfficeBurlington
Allan & Cora BakerAcushnet
AmazonHolliston
Andover Elder ServicesAndover
Andover Senior Community FriendsAndover
Athletic Fields working groupSharon
Atlantic Design Engineers, Inc.Acushnet
Attorney General's OfficeGrafton
Attorney General’s OfficeAndover
Bishop & AssociatesGrafton
BJ's Wholesale ClubMedford
Blatman, Bobrowski, Haverty & Silverstein, LLCMedford
Center for Active LivingSandwich
Cidare, Inc.Peabody
ClearGovPepperell
Corpus Christi Parish HallSandwich
Executive Office of Housing and Livable CommunitiesIpswich
Executive Office of Housing and Livable Communities (EOHLC)Medford
Farland Corporation Inc.Acushnet
Foresight Engineering Inc.Acushnet
Future use of Town Buildings TaskforceLongmeadow
GAPPGrafton
Girl Scout GroupBelmont

And 59 more companies.

The documents naming each, and the threads they sit in, are the account view. If one of these is you, those are your projects on the record. Ask and we will show you every one, and the towns around them, as they move.

A snapshot of a moving record

Everything above is frozen at 31 August 2026; the topic is not. 36 more events on this topic carry no usable date and are counted, never dated. The counts follow where we read most: a town or a state absent here was not read at depth, and absence is not evidence the topic is absent there. A lighter-read state is not a ceiling; where you care about a region, pointing the system there is the first thing an account changes. How coverage is built, and its known limits: municipalalpha.com/methodology.

How we can tell you about it ongoing

We track this topic continuously; this page is one cut of it, taken 31 August 2026. An account turns the snapshot into a working view: every town and every document behind these counts, the thread on each matter as it develops, word of new meetings as they land on the record, your own states and topics side by side, and the data itself when you want it in a table. The towns above are the taste; what each is actually deciding, funding or stalling is the read an account carries.

Also at this scope: Accessory dwelling unit across the country. Counts and dates are computed from the documents on the record; the topic and its definition are ours. This page carries no subscriber content.

Accessory dwelling unit, Massachusetts

from the towns' own meeting records

Scope

Massachusetts

every topic this state carries

Area

Development

every topic in this area

Towns on the record

33

with a dated document on this topic

Earliest

24 October 2024

the documents' dates

Meetings, last 90 days

2 against 21 before

dated documents

Snapshot cut

31 August 2026

this page's date

A view that stays current

ask for yours