Somerville demolition review and local historic districts: the 75-year rule, the Historic Permit, and what it means for windows, roofs and additions

Both reviews sit in the City's Office of Strategic Planning and Community Development (OSPCD), not in Inspectional Services, and both come before the building permit. This page covers what triggers each one, the steps, and what it means for the contractor's schedule. For the building permit itself, see the Somerville remodel permit guide.

What triggers a review

Source: the City's Historic Preservation page, read 23 October 2026. Demolition Review applies citywide outside the exempt areas on the City's exempt areas map; historic district review applies only to addresses on the master list of Local Historic Districts. Historic district properties are also held to the City's Minimum Maintenance Standards Ordinance.

The Demolition Review Ordinance is in the Zoning Ordinance, last amended 8 December 2022. The City's page does not state the length of any demolition delay or what share of a building counts as partial demolition, so read the ordinance text, linked from the same page, or ask staff at historic@somervillema.gov before you plan a large teardown of an old addition or a rear ell.

The steps

1. Check the address against the exempt areas map and the historic district list.
2. File a Historic Permit application in the City's CitizenServe portal, with the material in the City's HPC submission requirements. Fee schedules are on the Planning Division's helpful documents page.
3. Staff review or a Commission hearing. Staff may act for the Commission in limited cases; otherwise the case goes on an HPC agenda.
4. The written decision is filed with the City Clerk within 14 calendar days of the vote (HPC Rules of Policy and Procedure, adopted 1 August 2023).
5. Then the building permit through the usual City process.

What it means for hiring

• Put the review in the contract schedule. A start date that assumes the building permit comes in a week does not work for a teardown or a visible window change in a district. Ask who files the Historic Permit: the contractor, your architect or you.
• Window and roofing quotes should say "like-for-like" or not. A vinyl replacement for wood windows, or a new roof material, visible from the street in a district is a design change, not maintenance. A quote that does not mention historic review on a listed address is a quote from someone who has not checked.
• Additions that remove an old wall or ell can raise a demolition question as well as a zoning one. Ask staff early.

What Somerville permits show

Window work is the slow one: the usual Somerville window permit reached its final 461 days after issue, against 286 for a remodel. And 62.4% of remodel firms filed only one Somerville remodel permit in three years; a firm that works here often is more likely to have been through Historic Preservation Review before, so ask a one-off firm how it will handle it.

Compare Somerville remodelers by permits →

Typical filed values by firm: Somerville remodel cost, windows cost and roofing cost. Older permits on an address: Somerville building permit search. Timing by trade: how long a Somerville permit takes. Next door: Cambridge demolition delay.

What this does not tell you

Our file has building permits, not Historic Permit cases, so it cannot show which jobs went through review or how long review took. The City's page, not the ordinance text, is the source here; the ordinance sets the delay periods and definitions.