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Boston · MA · Solar Permitting

Solar permitting in Boston

How to pull a solar permit, get interconnected, and understand the AHJ requirements specific to Boston, with direct links to Boston Inspectional Services Department (ISD) and Eversource.

Permit office

Boston Inspectional Services Department (ISD)

Utility

Eversource

Permit timeline

10–30 business days

Permit fee

$100–$400 typical residential

For Boston homeowners

Your solar project, step by step

  1. 1. Pick a licensed solar contractor. Massachusetts requires Massachusetts Electrical Contractor + Construction Supervisor License (CSL). Verify license status before signing. The Aora Solar directory flags state-licensed contractors with a ✓ badge.
  2. 2. Site survey & design. Your contractor measures the roof, evaluates shading, and proposes a system size. Get this in writing along with a panel/inverter brand list and warranty terms.
  3. 3. Permit submission. Your contractor pulls the permit through Boston Inspectional Services Department (ISD). Typical permit timeline in Boston is 10–30 business days.
  4. 4. Installation. Most residential rooftop PV installs take 1–3 days of on-site work once the permit is approved.
  5. 5. Inspection. Boston Inspectional Services Department (ISD) performs a final inspection. Schedule this through the permit office.
  6. 6. Interconnection & PTO. Your contractor submits the interconnection paperwork to Eversource. Permission to Operate (PTO) typically arrives within 30–60 days of submission. You may not legally operate the system before PTO.

Resources for Boston homeowners

For contractors installing in Boston

Working under Boston Inspectional Services Department (ISD)

Notable local requirements

  • •Boston follows Massachusetts State Building Code + Boston amendments.
  • •Historic district reviews required in landmark areas (Beacon Hill, Back Bay, etc.).
  • •Structural review for older buildings with original framing.
  • •Massachusetts Class A Electrician must perform electrical scope.

Permit office

Boston Inspectional Services Department (ISD)

Open permit office page ↗

Utility interconnection

Eversource

Utility solar/interconnection page ↗

Resources for Boston installers

Broader Massachusetts context

Massachusetts requires Massachusetts Electrical Contractor + Construction Supervisor License (CSL). Full retail net metering + SMART program is the current export compensation framework. See the full state guide for licensing requirements, interconnection rules, and incentives.

Massachusetts solar permitting guide →

Last reviewed 2026-06-03. Local permitting requirements change. Always verify current rules with Boston Inspectional Services Department (ISD) and Eversource before starting a project.

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