The City of Portland's Permitting and Inspections Department, in Room 315 of City Hall at 389 Congress Street, serves Maine’s largest city and describes itself as a one-stop permitting, licensing and inspections shop. Every permit application is submitted through the city's Citizen Self Service portal, where an applicant tracks the review, pays invoices, resubmits files and requests inspections; the department's customer service line handles the rest. As a city of around 70,000 people, Portland is comfortably above the 4,000 threshold at which enforcing the Maine Uniform Building and Energy Code becomes a statutory duty.
Two other departments routinely touch a Portland file. The Planning Department reviews applications against historic preservation standards and site plan requirements, and the department's own guidance warns that historic preservation standards may still apply even where a permit itself looks routine — a real risk in a city where the Congress Street corridor, the Old Port, Munjoy Hill and the West End carry designations. Public Works reviews wastewater engineering compliance. Both reviews run inside the same portal file rather than as separate errands.
This guide covers the City of Portland in Cumberland County. South Portland, Westbrook, Falmouth, Cape Elizabeth and Scarborough are separate municipalities with their own code enforcement officers, and no Maine county issues building permits.
Online only, and historic review reaches further than you think. All Portland permit applications are submitted through the Citizen Self Service portal; there is no paper intake. And the department's own guidance is explicit that historic preservation standards may still apply to work that otherwise looks like a routine permit — on the peninsula that is the assumption to start from, not the exception.
What requires a building permit in Portland?
Maine draws its line in an unusual place: the code applies everywhere, but enforcement depends on how many people live in the municipality. The Technical Building Codes and Standards Board adopts the Maine Uniform Building and Energy Code — the MUBEC — under Title 10 of the revised statutes, and all building construction in the State is governed by it whatever the town does. What Title 25 adds is the enforcement duty: a municipality with a population over 4,000 must enforce the MUBEC, while a smaller one may choose to and many do not. The design obligation does not move with that choice — a house in a town of 800 is still meant to be built to the MUBEC; there may simply be no local officer checking. The current edition rests on the 2021 international building, residential, existing building, mechanical and energy codes, in force since the seventh of April 2025. So in Portland the questions are whether the municipality enforces, which officer holds which certification, and the portal-only filing rule and the historic review that reaches much of the peninsula.
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- New construction, alterations, additions, demolition and change of occupancy, filed through the portal
- Work on a designated structure or in a historic district, with Planning's preservation review
- Heating and cooling installations including heat pumps, rooftop chillers and fuel-fired appliances, on their own permit
- New buildings, additions and structural work, under the MUBEC as the municipality enforces it
- Alterations, renovations and repairs beyond ordinary repair, and any change of use or occupancy
- Work inside the shoreland zone, which needs its own permit under the municipal shoreland ordinance
Often exempt
- Ordinary repairs that do not alter structure, egress, fire protection or building systems
- Painting, papering, flooring, cabinets and similar finish work
- Ordinary repairs that do not alter structure, egress, fire protection or building systems
- Painting, papering, flooring, cabinets and similar finish work
- Building permits in a municipality under 4,000 people that has not chosen to enforce the code — though the code still governs the work and other requirements still apply
Who enforces, and what the state certifies
Locally, what stands out is the portal-only filing rule, the historic preservation review that reaches much of the peninsula, and the wastewater engineering review Public Works runs on the same file.
Maine’s adopted code applies statewide, but permits are required where the town’s ordinance says so; shoreland zoning applies statewide near water, fees and appeals are local, and code enforcement officers must be certified by the state. Maine rules
Who handles permitting in Portland?
The Permitting and Inspections Department is the permitting authority inside the city, enforcing the Maine Uniform Building and Energy Code through state-certified code enforcement staff and issuing building, trade and occupancy permits. The Planning Department reviews historic preservation standards and site plans, Public Works reviews wastewater engineering, the plumbing inspection runs on the state's own permit form, and the Department of Professional and Financial Regulation licenses electricians and plumbers statewide.
Not sure this scope needs a permit?
Get a free quote →| Detail | Information |
|---|---|
| Department | Portland Permitting and Inspections Department |
| Office | 389 Congress Street, Room 315, Portland, ME 04101 |
| Phone | (207) 874-8703 · permitting@portlandmaine.gov |
| Filing | Citizen Self Service portal, for applications, invoices, resubmittals and inspections |
| Other reviews | Planning for historic preservation and site plan; Public Works for wastewater |
| Trade licences | Department of Professional and Financial Regulation, statewide |
In 2025, building permits issued in Portland authorized 423 new privately owned housing units, 42 of them single-family homes, according to the U.S. Census Bureau Building Permits Survey.
Permit types
Residential permits
A Portland house project files through the portal with the trades on their own permits and the plumbing on the state's form through the city's plumbing inspection. On the peninsula the first question is whether the building is designated or sits in a district, because window, siding, door and roof decisions are settled by preservation standards before the building code is reached. The absence of a general contractor licence in Maine makes the written contract the owner's protection, and the Home Construction Contracts Act sets what it must contain.
Commercial permits
Commercial work in Portland — the Old Port and the working waterfront, the Bayside and Thompson's Point redevelopments, the hospital campuses and the arts district — files through the portal with sealed drawings, site plan review by Planning where the project reaches it, and wastewater engineering review by Public Works. A change of occupancy in the older downtown stock brings the existing building provisions and the preservation standards together, which is the characteristic Portland commercial file.
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Call 1-855-478-4290 →Shoreland zoning, wastewater and the unorganized territory
In Portland the harbour and Back Cove shoreland zones, the working waterfront's own zoning and the flood elevations along the eastern and western promenades all reach projects that the building code alone would not, and the peninsula's historic designations reach most of the rest.
Maine has no general contractor licence: home construction contracts above the statutory threshold must be in writing, and electricians, plumbers and oil and solid fuel technicians are licensed by the state. Maine rules
Portland permit costs and fees
Portland charges building permit fees on the cost of work you declare — $25 for the first $1,000 and $15 for each additional $1,000 — and may re-value a project at RSMeans rates if the declared cost looks low. Fees are invoiced through the portal after intake and must be paid before the permit issues, with separate fees for HVAC and sprinkler sub-permits and an $82 historic review fee for exterior work in a historic district.
| Item | Fee or rule |
|---|---|
| Building permit | $25 for the first $1,000 of work, then $15 per $1,000, invoiced through the portal |
| Trade permits | Separate electrical, plumbing and mechanical fees |
| Historic preservation review | $82 for exterior work in a historic district, reviewed by the Planning Department |
| Site plan review | Planning Department fees where the project reaches site plan |
| Wastewater engineering | Public Works review on connections and capacity |
| Late permit | Starting construction without a permit may mean double the permit fee |
Starting before issue costs money in Portland. The city’s fee schedule is blunt: a party who starts construction without first obtaining a building permit may be charged double the permit fee (City Code Sec. 6-92(d)), and the invoice must be paid before the permit issues. Intake staff check each application for completeness and come back to you if anything is missing, so a thin submission costs time. On a peninsula job with preservation review in the file, the gap between submission and issue is longer than owners expect — plan the start date from the issue date, not the filing date.
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Get a free quote →Trade permits and who may pull them
Permit required
- Internal plumbing — the state's own permit form, issued by the certified local plumbing inspector
- Subsurface wastewater — a licensed site evaluator's design, filed with the local plumbing inspector
- Electrical — a permit from the state Electricians' Examining Board (or the town, where it runs its own electrical inspection), except a licensed electrician's work in a single-family home
- Heating, oil and solid fuel appliances — installed by a technician licensed by the Maine Fuel Board; a permit where the town requires one
Typically exempt
- Replacing a plumbing fixture with a similar one in the same place, with no change to the pipes, and sealing leaks in an existing line
- Minor electrical repairs such as replacing lamps, fuses, light fixtures, switches and sockets, and installing or repairing outlets
Trade work is permitted separately and done by state-licensed tradespeople, though owners may do their own trade work in a single-family home they live in; internal plumbing is permitted by the local plumbing inspector on the state’s own form. Maine rules
How to apply for a Portland building permit
Enforcement is mandatory above 4,000 people and optional below; the code governs the work either way.
Within 250 feet of most water bodies the shoreland ordinance governs setbacks, clearing and expansion.
A licensed site evaluator's subsurface design on the state form, filed with the municipality.
Electricians and plumbers hold state licences; there is no general contractor licence, so the written contract carries the terms.
Reviewed against the MUBEC as the municipality enforces it, with the local zoning ordinance alongside.
Footing to final, plumbing on its own permit through the local plumbing inspector, then the certificate of occupancy.
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Get a free quote →Review, corrections and what actually causes delay
Permitting and Inspections reviews for zoning, the building code and life safety, with Planning reviewing preservation and site plan and Public Works reviewing wastewater on the same file. What delays a Portland project is a submission missing a checklist item, a peninsula job that did not anticipate preservation review, and a start date planned from the filing rather than the issue.
Inspections in Portland
Where the municipality enforces, inspections follow the code's sequence — footing, foundation, framing, rough trades, insulation and final — requested from the code enforcement officer by permit number, with plumbing inspected by the local plumbing inspector on its own permit. Work that passes final receives a certificate of occupancy where the municipality issues one, and a shoreland or wastewater condition closes with the officer certified in that area rather than with the building inspector. Portland inspections are requested through the Citizen Self Service portal against the permit number, with each trade on its own permit and internal plumbing inspected on the state's form; the certificate of occupancy follows the final.
Portland permit search and official resources
- Portland Permitting and Inspections — the department, its scope and contacts
- Portland Citizen Self Service (CSS) — the online building permit portal, how to register, and the January 2026 Tyler Community Access ID requirement
- Portland permit applications — permit types and submission checklists
- Maine Office of the State Fire Marshal, building codes — the MUBEC, its chapters and the enforcement threshold
- Maine Office of Community Affairs, code enforcement — code enforcement officer certification and the specialty areas
- Maine Land Use Planning Commission — permitting in the unorganized and deorganized territories
Inspections are where schedules slip.
Get a free quote →Frequently asked questions
Who issues building permits in Portland?
The city's Permitting and Inspections Department at 389 Congress Street, Room 315, through the Citizen Self Service portal. No Maine county issues building permits.
Can I file on paper?
No. All permit applications are submitted online through the city's portal, where you also pay invoices, resubmit files and request inspections.
Does historic review apply to my project?
It may. The department's guidance warns that historic preservation standards can still apply even where the permit looks routine, and much of the peninsula is designated.
Which code applies?
The Maine Uniform Building and Energy Code, on the 2021 model codes in force since the seventh of April 2025.
Does Portland have to enforce the code?
Yes. Enforcement is a statutory duty for any Maine municipality above 4,000 people, and Portland is the largest in the state.
Do I need a licensed contractor?
Maine issues no general contractor licence. Electricians and plumbers hold state licences, and the written contract required by the Home Construction Contracts Act is the owner's main protection.
Simplify Portland permitting with Alliance Permitting
Portland is a portal with two other departments inside it. We settle preservation and wastewater review before the building set goes in, and we plan the start date from issue rather than from filing.
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More Maine permitting guides
More Maine permitting guides
This guide is provided by Alliance Permitting for general information about Portland permitting. Requirements, fees, and procedures change; confirm details with the permitting authority before relying on them.