Retroactive Permits:
How Unpermitted Work Gets Legalized in Portland and Vancouver

How does a retroactive permit work?

In Portland, the city’s own guide to residential permits spells it out. You can get permits and inspections for work done without a permit, and the process is the same as for new work with one extra step. The plans show the existing, unpermitted work as if it were new. Then the covered work has to be exposed so an inspector can verify it was built to code and matches the approved plans. The inspector works with you on how much has to be opened.

For unpermitted living space, Portland is blunt about it. If a basement, attic, or garage was turned into living space without a permit, it has to be legalized through a new permit, applied for as if the work were not already done.

The steps usually go like this:

1. Find out what was done and when. A property history report, the seller’s disclosure, and the old listing photos all help.
2. Talk to the permit office about which permits apply: building, electrical, plumbing, mechanical, or a mix.
3. Get plans drawn if the work needs them. Structural changes and conversions usually do.
4. Apply, pay the fees, and get through plan review.
5. Open up walls, ceilings, or floors where the inspector asks.
6. Fix anything that doesn’t pass, then get final approval.

What gets opened up

This is where the money goes. An inspector can’t sign off on wiring, framing, or drain lines that are buried under drywall. For a finished basement, that can mean cutting inspection holes or removing sections of drywall so the electrical, plumbing, insulation, and framing can be seen. Plumbing in particular has to be visible, since pipes are normally tested and inspected before they’re covered.

How much comes off depends on the inspector and the job. One unpermitted bathroom fan circuit is a small hole. A full basement apartment can mean a lot of drywall.

If the work doesn’t meet code, it gets corrected first. Common problems on conversions are a bedroom without a proper egress window, ceilings too low for living space, and wiring that was never sized for the new load. The basement egress requirements post covers the window side of that.

What does a retroactive permit cost in Oregon?

You pay the normal permit fees for the work, the same as if it were new. On top of that, the city or county can charge an investigation fee for work started without a permit.

A lot of older advice says that fee is double the permit cost. That stopped being true in Oregon in 2013. Under ORS 455.058, the investigation fee is limited to the average or actual extra cost of making sure the work meets the building code because there was no permit. Each jurisdiction sets its own schedule within that limit, so the city’s current fee page is the place to check.

The statute has one exception worth knowing. An emergency repair for health, safety, or to prevent property damage doesn’t get the investigation fee if the permit is pulled within five business days of starting the repair.

The fees are rarely the big number. Plans, an engineer for structural work, opening walls, the repairs themselves, and patching and painting afterward usually cost more. A structural engineer’s evaluation in the Portland area commonly runs $500 to $1,500.

Clark County and Vancouver

On the Washington side, the City of Vancouver handles permits inside city limits, and Clark County handles unincorporated areas. Camas, Battle Ground, Ridgefield, and Washougal run their own permit offices. Clark County does allow as-built permits in many cases, and the steps look a lot like Portland’s: plans where needed, inspection, and opening finished surfaces so the work can be verified.

Washington cities and counties set the fee for work done without a permit in their own codes, and some tie it to the permit fee. Ask the permit office for the fee on work done without a permit before you budget.

For more on the Washington side, read buying a home in Vancouver, WA with unpermitted work.

Where a home inspection fits

A home inspection is a limited, visual, non-invasive look at the accessible parts of the house. It can’t confirm whether work was permitted, and it doesn’t check work against code. What it can do is point to clues: a basement bedroom with a small window, a newer electrical subpanel in an old house, an addition with a different roofline and newer framing in the crawlspace, plumbing that looks added on.

The paper trail comes from somewhere else. A property history report is $25 with an inspection and pulls permit records for the address from both BuildFax and BuildChek. Coverage varies by jurisdiction and decade, so a missing permit is a question to ask the permit office, not proof the work was done without one.

For the buyer’s view of what unpermitted work means before closing, read the Portland home buyer’s guide to unpermitted work. To book an inspection with a property history report, you can schedule online any day of the week.