City Building Permits

Somerville, MA Building Permit Guide

How to apply for a building permit in Somerville, Massachusetts. Permit authority, application steps, fees, and inspection requirements.

Massachusetts Middlesex County Updated March 2026

Permit Authority

All properties within the City of Somerville.

Department
Inspectional Services Department (ISD) -- Building Division
Address
1 Franey Road, Somerville, MA 02145
Phone
(617) 625-6600 ext. 5600
Website
https://www.somervillema.gov/departments/isd/building-division

Online Permit Portal

Open CitizenServe

Platform: CitizenServe • Account required: Yes • Submission: Online only

Application Process

  1. Create account at https://www.somervillema.gov/citizenserve.
  2. Select 'building permit' and complete application.
  3. Upload required documents.
  4. Pay review fee at submission.
  5. Plans reviewer reviews application within 30 days of filing.
  6. Building inspector issues permit within 30 days of filing date if work conforms to requirements.
  7. Pay balance of permit fee and receive permit card.
  8. Post permit card at job site.
  9. Work must commence within six months of all permits being issued.
  10. Contact ISD for final inspection appointment upon project completion.

Typical processing time: Up to 30 days per statute; contact ISD for current timelines.

Source: Inspectional Services Department (ISD) -- Building Division

General Requirements

Building permit required for all construction, alteration, repair, demolition, or change of occupancy.

Required Documents

  • For homeowners of 1-2 family dwellings: Proof of residence, Estimated Cost Affidavit, Plans (if required), Workplace Safety Affidavit, Wage Theft Prevention Affidavit
  • For licensed contractors: Construction Supervisor License (CSL), Home Improvement Contractor (HIC) registration, Certificate of insurance and signed contract, Plans (where required), Workplace Safety Affidavit, Site Safety Plan, OSHA certification, Wage Theft Prevention Affidavit
Permit validity
Work must commence within 6 months of permit issuance; work must be completed within 2 years (standard Massachusetts provision; verify with department).
Building code
780 CMR (transitioning to 10th Edition effective July 1, 2025)
Owner-builder
Owner-builders may obtain permits for own single-family residence.
Contractor requirements
All work must comply with 780 CMR and Somerville Zoning Ordinance. CSL required for all contractor work; HIC registration required for residential contractor work on 1-4 unit owner-occupied properties.

Fees

Minimum permit fee
$50
Plan check fee
$4.00 per $1,000 of estimated cost; $50.00 minimum
Permit fee formula
Building permit (base): $20.00 per $1,000 of estimated cost up to $100,000; $21.00 per $1,000 of estimated cost over $100,000
Trade permit fee
Varies by trade permit type
Payment note
Zoning review fee: $250. Safety review fee: 0.35% of estimated cost; $100.00 minimum. Residential use fee (1-3 units): $130.

Fees change. Verify current amounts at the official fee schedule (effective January 1, 2025).

Work That Does NOT Require a Permit

  • Ordinary repairs to structures that do not affect structural elements, egress, fire protection systems, fire ratings, energy conservation, plumbing, gas, electrical, or other utilities
  • Painting, tiling, and flooring are considered ordinary repairs and do not require a building permit
  • One-story detached accessory structures (tool sheds, playhouses, etc.) not exceeding 120 sq ft
  • Retaining walls not exceeding 4 feet in height measured from footing bottom to top
  • Water tanks on grade with capacity not exceeding 5,000 gallons and height-to-diameter ratio not exceeding 2:1
  • Sidewalks and driveways not more than 30 inches above adjacent grade, not over basement space, and not on an accessible route

Important: Somerville specifically confirms that painting, tiling, and flooring are considered ordinary repairs. Confirm all edge cases with the Building Division.

Inspections

How to Schedule

  • (617) 625-6600 ext. 5600 (phone)
  • isd@somervillema.gov (email)
Scheduling deadline
Contact ISD during public counter hours.
Inspection hours
Public counter hours: Monday through Thursday 9:00 AM - 11:00 AM and 1:00 PM - 3:00 PM; Friday 9:00 AM - 11:00 AM

Typical inspection sequence: The reverse side of the Building Permit card lists the required inspection sequence, which must be followed in order. Typical sequence: Foundation / footing; Framing; Insulation (where applicable); Final inspection. Applicant must make appointment with ISD for final inspection upon project completion.

Additional Resources

Information on this page was last verified: March 2026. Permit rules and fees change — confirm current requirements directly with the Inspectional Services Department (ISD) -- Building Division before applying.

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Important: This page is an educational resource provided by jaspector.com. It is not legal advice, and it does not substitute for official guidance from the permit authority listed above. Permit requirements, fees, and processes change frequently. Always verify current requirements directly with the issuing department before beginning any construction project. Use of this page does not create an attorney-client relationship. Jaspector assumes no liability for any outcomes arising from reliance on this information.

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