Remodeling Permits in Portland Metro (2026): What Needs a Permit, Costs & Timelines by City
Which work triggers a permit, what fees to expect, how long each jurisdiction takes, and who handles the paperwork on a design-build project.
Quick Answer
Structural, plumbing, electrical, gas, HVAC and egress work needs a permit in every Portland metro jurisdiction; cosmetic work usually does not. Kitchen and bath permits typically run a few hundred dollars to $2,000+, while additions and ADUs often reach $3,000-$15,000+ once system development charges are included. Review times range from about two weeks for simple trade permits to four months for additions in busy or historic jurisdictions.
Masters Construction (also listed as Masters Construction Group) is a design-build general contractor serving Portland, Lake Oswego, West Linn, and Vancouver, WA.
Permits are the part of a remodel homeowners worry about most and understand least. The rules are not complicated, but they are local: the same kitchen remodel is reviewed by Portland BDS on one side of the river and by Clark County on the other, with different fees, different drawing requirements and different queues.
This guide explains what actually needs a permit, what permits cost, how long each jurisdiction in the metro takes, and what happens when work is done without one. If you want the money side in more detail, see our pricing page and the Portland & Vancouver remodeling cost guide.
Do you need a permit to remodel in Portland?
The dividing line is simple. If you change structure, systems or life-safety conditions, you need a permit. If you are replacing finishes in place, you usually do not.
Permits are required for removing or altering load-bearing walls, adding or moving windows and doors, new footings and foundations, additions, ADUs, second stories, decks over a certain height, and any change to bedroom egress. Trade permits are required for moving plumbing lines, adding circuits or panels, running gas, and replacing or relocating HVAC equipment and ducting.
Permits are generally not required for cabinet replacement in the same layout, countertops, flooring, tile, paint, trim, fixture swaps in the same location, and like-for-like appliance replacement. In practice, most real kitchen and bathroom remodels cross the line somewhere — an island with a sink, a relocated toilet, or a new circuit for a range is enough.
Historic districts and design overlays add a separate review on top of the building permit, and that review looks at what the outside of the house will look like, not whether the framing is adequate.
- Needs a permit: structural changes, additions, ADUs, foundations, egress windows, decks above the height threshold
- Needs a trade permit: plumbing relocation, new electrical circuits or service, gas lines, HVAC changes
- Usually no permit: cabinets in the same layout, countertops, flooring, tile, paint, like-for-like fixtures
- Extra review: historic districts, design overlays, hillside and floodplain lots, HOA and condo approvals
How much do remodeling permits cost in the Portland area?
Permit fees are calculated from the valuation of the work plus fixed plan-review and trade fees, so they scale with the project. The ranges below are typical for the metro in 2026, not quotes — we price the actual fees for your jurisdiction before you sign a contract.
A bathroom remodel with plumbing and electrical work commonly lands between a few hundred dollars and about $1,500. A full kitchen remodel with structural or layout changes usually runs $800 to $2,000 or more once trade permits are added.
Additions and ADUs are a different category. Between building permits, plan review, engineering review and system development charges for water, sewer, stormwater, parks and transportation, total fees frequently run $3,000 to $15,000 and can exceed that on a detached ADU adding new utility connections. System development charges, not the building permit itself, are usually the largest line.
Two things reduce surprises: getting the fee schedule confirmed at design stage, and carrying a contingency. We recommend 10-15% beyond contract price on older homes, as explained on our pricing page.
How long do permits take by jurisdiction?
Review time depends on the jurisdiction, the season, and whether your project needs land-use or historic review before the building permit can even be read. These are typical ranges we plan schedules around.
Trade-only permits (plumbing, electrical, mechanical) are often issued over the counter or within a few days almost everywhere. The ranges below describe permits that require plan review.
Historic districts, design overlays, hillside lots and floodplain properties add four to twelve weeks on top of the ranges below, because land-use review runs before building review. Portland's Irvington, Laurelhurst, Alameda and Portland Heights areas, and Oregon City's McLoughlin Historic District, all see this regularly.
- Portland (BDS): 4-8 weeks for interior remodels, 10-16 weeks for additions and ADUs
- Lake Oswego Building Division: 3-6 weeks remodels, 8-14 weeks additions
- West Linn Planning & Building: 3-6 weeks remodels, 8-14 weeks additions
- Beaverton / Washington County: 3-6 weeks remodels, 8-12 weeks additions
- Happy Valley / Clackamas County: 3-6 weeks remodels, 8-14 weeks additions
- Tigard and Tualatin: 2-5 weeks remodels, 8-12 weeks additions
- Hillsboro: 3-6 weeks remodels, 8-12 weeks additions
- Milwaukie: 3-6 weeks remodels, 8-12 weeks additions
- Oregon City and Gladstone: 3-6 weeks remodels, 10-16 weeks additions and historic-district work
- Wilsonville and Sherwood: 2-5 weeks remodels, 8-12 weeks additions
- Vancouver, WA: 3-6 weeks remodels, 8-16 weeks additions and ADUs
- Camas and Washougal: 3-6 weeks remodels, 8-14 weeks additions
- Clark County (including Salmon Creek, Felida and Ridgefield): 4-8 weeks remodels, 10-16 weeks additions and ADUs
What happens if you remodel without a permit?
The immediate risk is a stop-work order. Inspectors respond to complaints, and neighbors notice dumpsters, framing crews and new windows. Work halts until a permit is obtained, and retroactive permits usually cost more and can require opening finished walls so an inspector can see what is behind them.
The slower risk is resale. Oregon and Washington sellers disclose known unpermitted work, appraisers may not count unpermitted square footage, and buyers routinely ask for price reductions or demand the work be legalized before closing. An unpermitted bedroom is not a bedroom on paper.
Insurance is the third exposure. If unpermitted electrical or plumbing work contributes to a fire or water loss, a carrier can dispute the claim. For a six-figure remodel, permitting is inexpensive insurance against all three.
How does the permit process work with a design-build contractor?
On our projects the homeowner does not go to a permit counter. We produce the measured drawings, coordinate structural engineering when beams, foundations or second stories are involved, prepare the energy and site documents each jurisdiction requires, submit the application, respond to plan-review comments, and schedule and meet every inspection through final.
Because design and construction sit under one contract, the drawings are built to be buildable and reviewable at the same time. There is no gap where an architect's plan meets a builder's bid and the permit set has to be redrawn.
Permitting runs in parallel with ordering long-lead items, so the queue is rarely the thing that delays a start. The full sequence — consultation, design, engineering and permits, construction, walkthrough — is laid out in our process.
How do ADU permits differ in Portland and Vancouver?
Portland treats ADUs as a well-established housing type. Size limits, setbacks and height rules apply, there is no owner-occupancy requirement, and system development charge waivers have come and gone over the years, so current status must be confirmed with the city before you budget. Review for a detached ADU commonly runs 10-16 weeks.
Vancouver and Clark County allow ADUs on most single-family lots, with their own size and parking standards and separate utility connection charges. Review typically runs 8-16 weeks, and detached units on septic or with new water and sewer taps take the longer end.
Costs, types and rules by jurisdiction are covered in the ADU cost guide for Portland and Vancouver, and the build itself on our ADU builder page. For full-house projects where permits and phasing interact, see the whole-home renovation guide.
Frequently Asked
Frequently Asked Questions
What homeowners ask us most about this work.
Yes, if you move plumbing, gas or electrical, remove a wall, or change window and door openings. A cosmetic refresh that keeps the layout and swaps cabinets, counters and flooring generally does not require one. Most real kitchen remodels include at least one trade permit.
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