Published June 23, 2026 · Updated October 2, 2026 · 3 min read
A full reroof does not always need a permit
For one- and two-family homes, Portland exempts reroofing with similar-weight materials from building permits, including replacement of some or all existing sheathing. A tear-off alone does not establish a permit requirement.
The city requires permits for reroofing townhouses, dwellings in wildfire zones, and installations of building-integrated photovoltaic roof panels or other photovoltaic roof coverings. Different rules apply to buildings with three or more units.
Exempt work must still meet building and zoning requirements. Historic, environmental, or other property-specific reviews may apply.
Confirm the scope before comparing bids
Before a roof replacement, give the permitting office your address and a written description of the proposed work. Include the existing and proposed roof materials, any planned changes to framing, and any solar work. Ask which approvals apply to that scope. For an address outside Portland's jurisdiction, contact the relevant local permitting office.
A neighborhood label or permit difficulty score cannot establish the requirements for your property.
Put permit responsibilities in the contract
Ask each bidder to put these details in writing:
- The roof work included in the price and the process for approving extra repairs.
- Whether the bid assumes a permit exemption, and how the contractor checked it.
- Who will apply for any required permits, pay the fees, and arrange inspections.
- How approval dates and inspection scheduling affect the start date.
- Which records you will receive at completion.
When choosing a roofing contractor, compare these answers across bids. Keep the agreed scope and any correspondence with the permit office with your contract.
If the roof work has already started
Gather the bid, photos, material details, and any permit number from your contractor. Ask the permitting office to confirm the requirements for the work at your address and explain any next steps. A missing permit number alone does not tell you whether the job needed one.
Common Questions
- Does removing the old roof automatically mean I need a permit?
- No. Check the exemption and exceptions above against your building and proposed work, then confirm any uncertain details with the city.
- Who should handle a required permit?
- Agree with your contractor in writing who will apply, pay the fees, arrange inspections, and provide the completion records. Ask the permitting office if you are unsure about applicant requirements.
- How much should I budget for permits?
- Ask for a project-specific allowance that separates permit fees from the contractor’s administrative charges. Request the applicable fee estimate from the permitting office before you approve the budget.
Request a roofing referral. Availability and response times vary.