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§ 02
When a permit is required
Permit triggers and exempt work for Somerville
Building permit required for all construction, alteration, repair, demolition, or change of occupancy.
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
- Exempt Ordinary repairs to structures that do not affect structural elements, egress, fire protection systems, fire ratings, energy conservation, plumbing, gas, electrical, or other utilities
- Exempt Painting, tiling, and flooring are considered ordinary repairs and do not require a building permit
- Exempt One-story detached accessory structures (tool sheds, playhouses, etc.) not exceeding 120 sq ft
- Exempt Retaining walls not exceeding 4 feet in height measured from footing bottom to top
- Exempt Water tanks on grade with capacity not exceeding 5,000 gallons and height-to-diameter ratio not exceeding 2:1
- Exempt Sidewalks and driveways not more than 30 inches above adjacent grade, not over basement space, and not on an accessible route
Note: Somerville specifically confirms that painting, tiling, and flooring are considered ordinary repairs. Confirm all edge cases with the Building Division.
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
- Building code
- 780 CMR (transitioning to 10th Edition effective July 1, 2025)
- Permit validity
- Work must commence within 6 months of permit issuance; work must be completed within 2 years (standard Massachusetts provision; verify with department).
- 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.
Source: Inspectional Services Department (ISD) -- Building Division ↗
§ 03
Application process
Typical processing: Up to 30 days per statute; contact ISD for current timelines.
- 01 Create account at https://www.somervillema.gov/citizenserve.
- 02 Select 'building permit' and complete application.
- 03 Upload required documents.
- 04 Pay review fee at submission.
- 05 Plans reviewer reviews application within 30 days of filing.
- 06 Building inspector issues permit within 30 days of filing date if work conforms to requirements.
- 07 Pay balance of permit fee and receive permit card.
- 08 Post permit card at job site.
- 09 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 ↗
§ 04
Fee schedule
Effective January 1, 2025
Fee type
Amount
01
Minimum permit fee
$50
02
Plan check fee
$4.00 per $1,000 of estimated cost; $50.00 minimum
03
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
04
Trade permit fee
Varies by trade permit type
Zoning review fee: $250. Safety review fee: 0.35% of estimated cost; $100.00 minimum. Residential use fee (1-3 units): $130.
Fees change periodically. Confirm at the official fee schedule ↗ (effective January 1, 2025) before budgeting.
§ 05
Required inspections
Scheduling and sequence
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 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.
Source: Inspectional Services Department (ISD) -- Building Division ↗
§ 06
Frequently asked
Common questions about Somerville permits
01 Do I need a building permit in Somerville, MA? ▸
Building permit required for all construction, alteration, repair, demolition, or change of occupancy.
02 How much does a building permit cost in Somerville, MA? ▸
Building permit fees in Somerville, MA are set by the local building department and vary by project type and valuation. The minimum permit fee is $50. Fees are calculated as: 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. Plan check fee: $4.00 per $1,000 of estimated cost; $50.00 minimum.
03 How do I apply for a building permit in Somerville, MA? ▸
To apply for a building permit in Somerville, MA, follow these steps: 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.
04 How long does it take to get a building permit in Somerville, MA? ▸
Building permit processing times in Somerville, MA typically run Up to 30 days per statute; contact ISD for current timelines.. Timelines can vary based on project complexity and current department workload.
05 What work is exempt from building permits in Somerville, MA? ▸
Not all construction work requires a permit in Somerville, MA. The following work is generally exempt: 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. Note: Somerville specifically confirms that painting, tiling, and flooring are considered ordinary repairs. Confirm all edge cases with the Building Division. When in doubt, confirm with the local building department before starting work.
06 How do I schedule a building inspection in Somerville, MA? ▸
Once your permit is issued and work reaches an inspection milestone, you can schedule a building inspection in Somerville, MA via: (617) 625-6600 ext. 5600, isd@somervillema.gov. Contact ISD during public counter hours..
last verified April 2026
source Inspectional Services Department (ISD) -- Building Division ↗
entry id permits/massachusetts/middlesex/somerville
Educational reference. Permit rules and fees change — confirm current requirements directly with Inspectional Services Department (ISD) -- Building Division before applying. Jaspector is not legal advice.