Cohasset Building Department 2026: Permits, Inspections & Services

Cohasset, Massachusetts · 2026 permit and inspection guide

Building Permits, Inspections and Official Services in Cohasset

If you are planning a renovation, addition, new home, deck, pool, commercial project or other construction work in Cohasset, the Town’s Building & Inspections Department is the main local office for building permits, zoning review and construction inspections. Electrical, plumbing and gas permits and inspections are also coordinated through the permitting and inspections operation.

What the Cohasset Building Department Handles

The department administers and enforces the Massachusetts State Building Code, Cohasset zoning rules and other construction-related requirements. Its published responsibilities include reviewing permit applications and plans, issuing permits, performing field inspections, enforcing zoning requirements and issuing occupancy approvals for new or changed uses.

Common services include:

• Residential and commercial building permits
• Construction plan review
• Zoning compliance review
• Building inspections
• Electrical permits and inspections
• Plumbing and gas permits and inspections
• Certificates or permits related to occupancy
• Permit records and building permit logs
• Code and zoning enforcement
• Coordination with Planning, Conservation, Health, Fire, Sewer and other Town boards when a project needs multiple approvals

Do You Need a Building Permit?

Cohasset’s published pre-permitting guide says permits are required for almost all building and construction-related activities in Town. The exact permit depends on what you are changing, the size and location of the project, zoning conditions and whether electrical, plumbing, gas, septic, wetlands, historic or other approvals are involved.

The Town’s guidance specifically discusses new homes, additions, kitchen and bathroom renovations, decks, porches, basement and attic renovations, swimming pools, accessory structures, retaining walls, commercial work and projects that change a building’s structural footprint.

How to Apply for a Cohasset Building Permit

1. Define the full scope of work.
   Write down what is being built, removed, relocated or altered. Include dimensions, use of the space, structural changes and any electrical, plumbing or gas work.
2. Check whether another Town approval comes first.
   Projects involving wetlands, septic systems, zoning relief, historic-district property, major land alteration, curb cuts, sewer connections or fire-protection systems may need another board or department before the building permit can be issued.
3. Create or sign in to your PermitEyes account.
   Open the Cohasset electronic permitting portal. Create an account if you do not already have one.
4. Start the correct building-permit application.
   Enter the property, owner, contractor, estimated construction value and a clear description of the work. Avoid vague descriptions such as “remodel” when you can state exactly what is changing.
5. Prepare plans and supporting documents.
   Cohasset currently states that paper building plans still need to be submitted for Building Commissioner review even though the application itself is electronic.
6. Pay the required fee.
   Use the applicable fee schedule and follow the payment instructions generated for your application. Published schedules state that applications cannot be accepted without required fees.
7. Watch for comments or additional approvals.
   Missing plans, contractor information, zoning issues or another board’s approval can hold up issuance. Keep your application number so staff can identify the project quickly.
8. Pick up the issued building permit.
   The Town’s electronic-permitting instructions say applicants must still physically obtain the building permit.
9. Post the permit at the property.
   Keep the permit visible and protected from weather at the site through the inspection and closeout process.
10. Start regulated work only after the permit is issued.
    An application being submitted or under review is not permission to begin construction.

Official instructions: Cohasset Electronic Permitting – Building.

Documents to Prepare Before You Apply

The exact package varies by project, but preparing the following information before opening the application can save a lot of back-and-forth.

You can review the Town’s currently published Building & Inspections pre-permitting procedure before submitting a larger project.

Projects That Need a Pre-Permitting Meeting

Cohasset’s currently linked pre-permitting procedure says a pre-permitting meeting is required for new homes/new construction, commercial construction and projects expected to require permits from multiple Town boards. The purpose is to identify zoning problems and establish the proper order for public hearings and approvals before the building-permit review reaches its final stage.

For a current appointment, use the Building & Inspections main number at 781-383-4100 ext. 5100 rather than relying on an old staff contact contained in an older PDF.

Other Approvals That Can Affect a Building Permit

One of the easiest ways to lose time is to treat the building permit as the only approval. Cohasset’s process can involve several boards depending on the property and scope.

For current zoning text, use the Town of Cohasset Code and Zoning Bylaw. It includes Chapter 300, the Cohasset Zoning Bylaw, as well as local building, historic-district, stormwater and wetlands provisions.

Cohasset Building Permit Fees

Cohasset’s Building Department currently publishes a building fee schedule effective June 1, 2023. Treat these figures as a budgeting guide and verify the final amount when you file because schedules can be amended.

Example: if residential work has an accepted construction value of $35,000, the published $10-per-$1,000 formula produces a $350 base building-permit fee. Separate electrical, plumbing, gas, planning or other fees may still apply.

See the official Cohasset building fee schedule.

Electrical Permit Fees

Cohasset’s published electrical fee schedule is separate from the building fee. Selected residential charges include:

Full details: official electrical permit fee schedule.

Plumbing and Gas Fees

The Town publishes a newer plumbing and gas schedule effective July 1, 2025. Selected current published charges are below.

See the official plumbing and gas fee schedule for the complete list.

How to Schedule a Cohasset Building Inspection

Cohasset tells permit holders to contact the Building Department for inspections. Do not assume that submitting a permit application automatically schedules an inspection.

1. Confirm the correct inspection stage.
   Know whether you need a foundation, rough, framing, trade, final or another project-specific inspection.
2. Have the permit information ready.
   Keep the permit number, project address, owner or contractor name and inspection type in front of you.
3. Call Building & Inspections.
   Use 781-383-4100 ext. 5100 for general inspection scheduling and current instructions.
4. Keep work accessible.
   Do not cover work that still needs to be inspected. Keep the permit and approved plans available at the property.
5. Complete corrections before requesting reinspection.
   If an inspector identifies deficiencies, correct the listed items before scheduling the required follow-up.

When Can You Speak With the Director?

The Building Department currently publishes the following office hours for Director John Hallin:

Inspectors spend time in the field, so calling before making a special trip to Town Hall is sensible if you need to meet a particular inspector.

How to Check a Cohasset Permit or Application Status

Cohasset provides a public PermitEyes view where available permit records can be searched. The system displays fields such as application number, application date, issue date, property address, permit type, permit number and application status.

1. Open the Cohasset PermitEyes public search.
2. Select the appropriate Building Department records area if necessary.
3. Search using the information you have, such as the site address, permit/application number or displayed status fields.
4. Confirm that the property address and permit type match the project you are researching.
5. If the record is unclear, contact Building & Inspections with the property address and permit number.

Cohasset also maintains official building permit logs for many historical periods.

Certificate of Occupancy and Project Closeout

Cohasset’s Building Department issues occupancy approvals for new properties and changes of use, and its zoning bylaw states that a structure or lot may not be used or occupied where an occupancy permit is required until the Building Inspector has determined compliance.

Before treating a project as complete, verify:

• All required building inspections are complete.
• Electrical, plumbing and gas finals are complete when applicable.
• Outstanding corrections have been cleared.
• Required releases from other Town boards or departments are complete.
• Any required final-cost affidavit has been submitted.
• The required occupancy approval or final permit status has been issued.

Current Massachusetts Building Code

Massachusetts is operating under the 10th Edition of the Massachusetts State Building Code, 780 CMR. The 10th Edition first became effective October 11, 2024, and the transition period for using the 9th Edition ended June 30, 2025.

Cohasset has also adopted the Massachusetts Stretch Energy Code. Energy-code requirements can affect new homes, additions, substantial renovations and commercial construction, so energy documentation should be considered early rather than at the end of plan review.

State reference: Massachusetts State Building Code — 780 CMR.

Hiring a Contractor in Massachusetts

Home Improvement Contractor registration and Construction Supervisor Licensing are different. Depending on the work, a contractor may need one or both. Cohasset’s own pre-permitting materials also require applicable CSL and HIC contractors to register their credentials with the Building & Inspections Department.

Before work begins, verify the contractor’s current state credentials and make sure the permit application correctly identifies the responsible contractor.

No Published Guaranteed Permit Review Time

Cohasset’s current Building & Inspections materials do not publish one guaranteed turnaround time for every building permit. That makes sense because a simple residential alteration and a project involving zoning relief, wetlands, historic review, septic approval and engineered plans do not follow the same path.

To reduce avoidable delays:

• Use a detailed project description.
• Submit complete plans the first time.
• Resolve zoning questions early.
• Complete required board approvals in the correct sequence.
• Use licensed trades where required.
• Respond quickly to plan-review comments.
• Do not start work while an application is only pending.

Common Problems and What to Do

Cohasset Building Department Contact Information

Department contacts, fees, staff assignments and permitting procedures can change. Use the official portal or Building & Inspections office for the final project-specific decision.

Related Massachusetts Permit Guides

If your work is outside Cohasset, do not reuse Cohasset’s fees or procedures. Municipal permitting varies even between nearby Massachusetts communities. Our guides to the Brockton Building Department, Abington Building Department and Boston building permit search process explain their separate local systems.

Cohasset Building Department: 10 FAQs