Dennis Building Permits & Inspections: Start Here
If you are building, remodeling, replacing a roof, adding a deck, installing a pool, changing electrical or plumbing work, demolishing a structure, or checking an existing permit in Dennis, Massachusetts, the Town of Dennis Building Department is the main local office to start with.
The useful part is knowing what must happen before you press Submit. A Dennis project can involve zoning, historic-district review, septic or Health Department approval, flood requirements, contractor documentation and trade permits in addition to the basic building application.
Dennis Building Department Contact Information
| Item | Current information |
|---|---|
| Official office | Town of Dennis Building Department |
| Address | 685 Route 134, South Dennis, MA 02660 |
| Main phone | 508-760-6157 |
| Fax | 508-694-2019 |
| Office hours | Monday-Friday, 8:30 AM-4:30 PM |
| Building Commissioner | Paul Fowler |
| Building Inspector | Neil Behrend — 508-760-6290 |
| Plumbing & Gas Inspector | Kevin McCullough — 508-760-6130 |
| Electrical Inspectors | Richard Boudreau / Joseph Sheehan — 508-760-6129 |
| Historic District | 508-760-6127 |
| Permit system | OpenGov |
Staff assignments can change. If you need a particular inspector, check the current Town Building Department page before calling.
What Does the Dennis Building Department Handle?
The department administers local enforcement of building, electrical, plumbing, gas and zoning requirements connected with construction and land use. The Town’s published permit and fee materials cover work such as:
- new residential and commercial buildings;
- additions, renovations, alterations and repairs;
- foundations;
- roofing, siding, windows and exterior doors;
- swimming pools;
- demolition;
- electrical installations and service work;
- plumbing and gas work;
- sheet-metal permits;
- solar and other alternative-energy installations;
- signs;
- stormwater permits;
- certificates of inspection and occupancy-related approvals; and
- zoning determinations associated with proposed work.
That does not mean every small repair automatically requires the same permit. When your scope is unclear, describe the actual work to the department before ordering materials or starting construction. Structural changes, electrical work, plumbing, gas, changes in use, additions and work affecting setbacks deserve particular attention.
Before You Apply: Four Dennis Checks That Can Save a Delay
1. Check zoning before finalizing the design
Setbacks, use, building location, lot coverage and other zoning rules can affect a project even when the construction itself could meet the state building code.
- Open the Dennis zoning map page.
- Locate the property and identify the zoning district.
- Review the current zoning bylaw for the applicable district and proposed use.
- If the proposed work needs a variance, special permit or formal determination, contact the Planning Department before investing heavily in final plans.
The Dennis Planning Department can be reached at 508-760-6119. A map is useful for research, but a mapped line should not be treated as a substitute for a survey or formal zoning determination when the exact boundary matters.
2. Check whether the property is in a historic district
Dennis has two historic districts: the Old King’s Highway Regional Historic District and the South Dennis Historic District. The Town states that properties north of the Mid-Cape Highway, Route 6, are within the Old King’s Highway district.
Exterior work in a historic district can require a Certificate of Appropriateness, exemption, amendment or another historic approval. This can affect roofing, siding, exterior alterations, fences, signs, additions, new structures and demolition.
Check the official Dennis Historic District information →
3. Check flood-zone requirements
For an existing building in a Special Flood Hazard Area, substantial improvement or substantial-damage rules may add documents to the permit file. Dennis publishes a substantial-improvement workbook indicating that applicable applications can require exterior photographs, a detailed scope of work, cost information, elevation information and owner/contractor affidavits.
If the property is near the coast or you already know it is in a mapped flood area, address this early rather than after the building application reaches review.
4. Check septic and Health Department issues
This is especially important in Dennis. Some projects involving properties with septic systems, environmentally sensitive areas, bedroom changes, additions or failed systems can require Health Department review before the building permit can move forward.
The Town’s Health Department guidance explains that certain variance paperwork must be completed and recorded before Health staff can sign applicable building applications. When the project includes a septic installation, repair or upgrade, the septic permit may need to be issued first.
- Review the Dennis septic-system resources.
- Check whether your project changes bedrooms, habitable space, building footprint or septic demand.
- If you are unsure, call the Health Department at 508-760-6158 before submitting final building plans.
How to Apply for a Dennis Building Permit Online
Dennis changed its permitting platform to OpenGov on January 13, 2025. Current applications should start in that system.
Step 1 — Open the official Dennis permit page
Start with the Town’s Online Permitting page, then follow its link to the Dennis OpenGov portal. This reduces the chance of landing on an unrelated third-party permit website.
Step 2 — Sign in or create your OpenGov account
Use an email address you monitor. Application messages, corrections, invoices and inspection-related information may be tied to the account.
Step 3 — Select the permit that matches the work
Choose the actual project type rather than the closest-sounding category. Building, zoning, electrical, plumbing, gas, historic and other approvals can follow different review paths.
Step 4 — Enter the property and project details
Use the correct project address, owner information and a clear scope. Instead of writing only “renovation,” describe what is changing: for example, interior wall alterations, new bathroom, replacement windows, structural work or a 300-square-foot addition.
Step 5 — Upload the required documents
Add plans, plot plans, affidavits, authorization forms, contractor information and other documents required for your project.
Step 6 — Submit and monitor the account
Submission does not mean the permit has been issued. Watch your OpenGov account for departmental reviews, requested corrections, invoices and other tasks.
Step 7 — Upload corrections to the existing record
If the Town asks for revised documents, upload them to the pending application rather than creating a duplicate permit. The Building Department specifically asks applicants to notify the appropriate staff member after revised or requested documents have been uploaded.
Step 8 — Wait for the actual permit
Do not treat a submitted application or paid invoice as permission to start regulated work. Confirm that the permit has been issued.
Ready to submit? Open the official Dennis OpenGov portal →
Documents Worth Preparing Before Opening the Application
The exact packet depends on the project, but these are useful items to collect first:
- complete project address and owner information;
- clear written scope of work;
- construction drawings when required;
- plot or site plan when location, setbacks or new structures are involved;
- contractor license and registration information where applicable;
- Workers’ Compensation documentation where required;
- owner authorization if someone is filing for the owner;
- Homeowner’s Exemption Affidavit when applicable;
- zoning or planning approvals if triggered;
- historic-district approval when applicable;
- flood documentation for applicable properties;
- Health Department or septic documents when required; and
- separate electrical, plumbing, gas or sheet-metal information for trade work.
The Town keeps several of these documents together on its Permit Forms & Applications page, including the residential construction checklist, Workers’ Compensation form, homeowner exemption affidavit, owner authorization form, plot-plan information, flood documents and trade-permit forms.
Dennis Building Permit Fees: Published Town Rates
Residential building fees shown in the Town schedule
| Residential work | Published FY2026 fee |
|---|---|
| New construction — 100 sq. ft. or less | $70 flat |
| New construction — over 100 sq. ft. | $0.70 per sq. ft. |
| Foundation only | $250 |
| Alteration/renovation/repair — 100 sq. ft. or less | $70 |
| Alteration/renovation/repair — over 100 sq. ft. | $0.70 per sq. ft. |
| Above-ground pool | $75 |
| In-ground pool | $150 |
| Principal-building demolition | $250 |
| Accessory-building demolition over 200 sq. ft. | $75 |
| Re-roofing or residing | $60 |
| Windows and exterior doors | $60 |
| Roofing and siding combination | $100 |
| Roofing + siding + window/door combination | $150 |
Other useful published charges
| Service | Published FY2026 fee |
|---|---|
| Zoning application/determination | $50 |
| Stormwater permit | $315 |
| Residential sheet metal | $60 per unit |
| Commercial sheet metal | $105 per unit |
| Building Department Certificate of Inspection | $92 |
| Residential temporary Certificate of Occupancy, for cause | $46 |
| Other temporary Certificate of Occupancy, for cause | $119 |
| First permit renewal, for cause | $46 |
| Reinspection | $46 |
| Removal of Stop Work Order | $63 |
| Change of contractor | $57 |
The published schedule also states that construction started before the required permit is issued can be charged at twice the permit cost, except where emergency work is allowed by code.
Plumbing, gas and electrical examples
The Town’s FY2026 schedule lists residential plumbing/gas at $60 for the first fixture and $12 for each additional fixture. Commercial plumbing/gas is listed at $85 for the first fixture and $18 for each additional fixture.
Residential electrical fees in that schedule include $105 for new construction/addition/renovation/remodel work up to 1,200 square feet, $157 for 1,200-3,000 square feet, and $210 for over 3,000 square feet.
How to Schedule a Dennis Building Inspection
Current OpenGov permits use the OpenGov customer portal for inspection requests.
- Confirm that the permit has actually been issued.
- Finish the work required for the inspection stage.
- Do not conceal framing, wiring, piping or other work that still requires inspection.
- Sign in to your Dennis OpenGov account.
- Open the issued permit.
- Select the appropriate inspection request.
- Submit the request and monitor the record for scheduling information.
- After inspection, review the result and any correction notes before continuing.
Published inspection hours
| Inspection type | Town-published field hours |
|---|---|
| Building | Monday-Friday, 9:00 AM-4:00 PM |
| Plumbing & gas | Monday-Friday, 9:30 AM-3:00 PM |
| Electrical | Monday-Friday, 9:00 AM-Noon; additional Tuesday & Thursday Noon-4:00 PM |
| Solar electrical | Tuesday & Thursday only, Noon-4:00 PM |
The Town’s inspection scheduling policy says requests received online by 9:00 AM can be scheduled for the same business day, while requests received after 9:00 AM are scheduled for the next business day. A specific inspection time is not guaranteed.
For an interior inspection, the Building Department currently states that a responsible adult age 18 or older must be on-site. The department page states that an exterior inspection does not require someone to be present.
What if your permit was issued in the old EnerGov system?
Do not create a replacement OpenGov permit just to schedule the inspection. The Town instructs applicants with older EnerGov permits to call 508-760-6157. Staff can add your email address to the permit, after which you receive a link allowing you to access the older record and request the required inspections.
How to Search Dennis Permits and Property Information
The Town describes its Online Permitting service as a place to search available permits, plans, inspections, code cases, requests and licenses.
- Open the Dennis OpenGov portal.
- Use the available public search tools.
- Search by the property address or record number when available.
- Open the correct property or permit record.
- Review the permit type, status and inspection information rather than looking only at whether a record exists.
If you are researching older work and cannot locate it online, call the Building Department at 508-760-6157.
Need a deed, plot plan or septic as-built?
The Town explains that the Barnstable County Registry of Deeds is the official keeper of deeds and recorded plans for Dennis properties. A recorded plot plan may show parcel dimensions but may not show every structure.
For an as-built showing the septic system, contact the Dennis Health Department at 508-760-6158. For more details, see the Town’s property-information guidance.
Building Code Used in Dennis in 2026
For new 2026 permit filings, Massachusetts uses the 10th Edition of the Massachusetts State Building Code, 780 CMR. The 10th Edition first became effective October 11, 2024. The transition period allowing the prior edition ended June 30, 2025, so the 10th Edition is the statewide framework for new applications in 2026.
The code is based on Massachusetts-amended versions of the 2021 International Codes, including residential, building, existing-building, mechanical, energy, pool/spa and related provisions.
Open the official Massachusetts 780 CMR resources →
Dennis also uses the Stretch Energy Code
Massachusetts’ municipal energy-code records identify Dennis as a Stretch Energy Code community. Current Massachusetts Stretch provisions are based on the 2021 IECC with Massachusetts amendments under 225 CMR 22 for residential construction and 225 CMR 23 for applicable commercial construction.
Check current Massachusetts energy-code documents →
Massachusetts homeowner and contractor rules
Massachusetts distinguishes a Home Improvement Contractor registration from a Construction Supervisor License. They are not interchangeable.
If you hire a contractor for qualifying home-improvement work, Massachusetts consumer guidance warns homeowners against pulling the contractor’s building permit themselves. Doing so can shift important responsibilities to the homeowner and can affect protections under the state Home Improvement Contractor program.
Check Massachusetts HIC requirements →
If your project is outside Dennis, do not reuse Dennis procedures. Massachusetts municipalities operate their own local permit systems. See our existing guides for the Dartmouth Building Department, Boston building permits, and Chicopee Building Department when the project is in those jurisdictions.
A Practical Dennis Permit Checklist
Before submitting, run through this list. It is much easier to fix a missing item before review starts than after the application is returned.
- Confirm the project is actually in the Town of Dennis.
- Know the exact scope of work.
- Check zoning and required setbacks.
- Check whether the property is north of Route 6 or otherwise within a historic district.
- Check flood-zone issues when applicable.
- For septic properties, determine whether Health Department review is needed.
- Prepare plans and a plot plan when required.
- Collect contractor, license and registration information.
- Complete Workers’ Compensation and owner-related forms when applicable.
- Apply through the correct OpenGov permit category.
- Respond to plan-review comments inside the existing application.
- Do not begin permit-required work until the permit is issued.
- Request inspections before covering work.
- Complete required final inspections.
- For new residential or commercial buildings, remember that Dennis states a final as-built is required before issuance of the Certificate of Occupancy.
Dennis Building Department: 10 FAQs
1. Where is the Dennis Building Department?
The Building Department is at 685 Route 134, South Dennis, MA 02660. The main phone number is 508-760-6157.
2. What are the Dennis Building Department office hours?
The Town currently lists office hours as Monday through Friday from 8:30 AM to 4:30 PM, excluding applicable holidays and closures.
3. How do I apply for a building permit in Dennis?
Use the Town of Dennis OpenGov portal. Create or sign in to your account, select the correct permit, enter the property and project details, upload required plans and forms, submit the application, then monitor the account for review comments, fees and issuance.
4. Does Dennis use OpenGov for building permits?
Yes. The Town moved its permitting system to OpenGov on January 13, 2025. Older permits issued through EnerGov may require help from the Building Department to access and schedule inspections.
5. How do I schedule a Dennis building inspection?
For current permits, request the inspection through your OpenGov customer portal. The Town’s scheduling policy says online requests received by 9:00 AM may be scheduled for the same business day, while requests after 9:00 AM move to the next business day.
6. Does someone have to be home for a Dennis inspection?
The Building Department states that a responsible adult age 18 or older must be present for interior inspections. Its current department page states that exterior inspections do not require anyone to be present.
7. How much is a Dennis building permit?
The amount depends on the project. The latest fee schedule currently linked by the Town is labeled FY2026 and lists, for example, residential new construction over 100 square feet at $0.70 per square foot, residential re-roofing at $60 and an in-ground residential pool at $150. Because that document is labeled FY2026, confirm the current charge in OpenGov before paying.
8. Do I need historic approval in Dennis?
You may if the property is in the Old King’s Highway or South Dennis Historic District and the project affects regulated exterior features. Dennis states that properties north of Route 6 are in the Old King’s Highway district. Check the Town’s historic maps and requirements before beginning exterior work.
9. What building code applies in Dennis in 2026?
The current statewide framework is the 10th Edition Massachusetts State Building Code, 780 CMR. The transition allowing the 9th Edition ended June 30, 2025. Dennis also follows the Massachusetts Stretch Energy Code.
10. Does a new building in Dennis need an as-built before occupancy?
Yes. The Dennis Building Department states that all new residential and commercial buildings require a final as-built before a Certificate of Occupancy can be issued.
Your Next Step
For most Dennis projects, the safest order is simple: check zoning and property constraints first, prepare the required plans and forms, submit through OpenGov, wait for actual permit issuance, then request inspections at the required stages.
If the property is in a historic district, flood area, environmentally sensitive area or has a septic issue, solve that review early. Those local details are often more important to the timeline than filling in the basic permit form.
When you are ready to perform the official action, use the Town of Dennis OpenGov portal or call the Building Department at 508-760-6157 for a project-specific determination.
Information reviewed for 2026. USBuilding.org is an independent informational resource and is not the Town of Dennis. Permit requirements, fees, staff, inspection schedules and forms can change. The Town of Dennis and applicable Massachusetts laws and codes control final project requirements.