What should I fix before selling a mid-century house in Portland?

Fix what a buyer's inspector will find and what the disclosure form will ask about. Leave the original character alone. And ask first about anything that touches permits, lead, asbestos or the outside of the house.

By Jake Goodson and Tony Le · Published October 19, 2026 · Updated October 19, 2026

Fix what a buyer's inspector will find and what the disclosure form will ask you about, and leave the original character alone. The Houselab Team walks the house with you and sorts it into three piles: fix, leave and ask first.

If you own a ranch, a split-level, a post-and-beam or a Northwest modern house built somewhere between the late 1940s and the mid 1970s, you're in good company. Portland has 33,856 housing units built in the 1950s, 24,840 built in the 1960s and 31,154 built in the 1970s. That's 89,850, or roughly 30% of the units in the city's year-built table, and the 1940s add another 22,750. (The 30% is our arithmetic. The table's decades add up to 302,723 units, a little under the 318,754 total the same page lists, and the page doesn't explain the gap.)

Selling one of these houses comes with two opposite worries. Fix too much, and you might sand off the thing that made someone stop scrolling. Fix too little, and you hand a buyer a list of reasons to knock money off the price. The way through is to sort before you spend.

We start with what a buyer's inspector will find on day one: the roof, the water and the wiring, in that order. Then we go through the paperwork, meaning the permits and the disclosure. The one repair we always tell a seller to make is to stop active water. A leak or a damp spot is a line on the disclosure form and a reason for a buyer to ask for money.

Three piles

Fix is for things a buyer's inspector or Oregon's disclosure form will surface anyway: roof leaks, moisture, drainage, electrical, anything with a safety standard behind it.

Leave is for the original character, the open plan, the glass, the wood, the built-ins. Once these come out, they don't go back in.

Ask first is for anything that gets you into permits, asbestos or lead, or changes the outside of the house.

These are the piles we'd use.

ItemWhy it mattersPileSource
Roof leaks, and repairs to themThe disclosure form asks about roof leaks and repairs (5.A)FixORS 105.464
Moisture, water getting in, mildew odorsThe form asks about these (5.G)FixORS 105.464
Drainage, standing water, settlingThe form asks about these on the property or nearby (9.A)FixORS 105.464
Foundation boltingThe form asks whether a house built before 1974 is bolted to its foundation (section 8)Ask firstORS 105.464
Aluminum branch wiring, in a house wired from 1965 to the mid 1970sCPSC recommends permanent repair by a qualified electricianFixCPSC Publication 516
Open plan, original glass, original wood, built-insOriginal character that can't be put back once it's removedLeaveHouselab view
Work done without a permitThe form asks about remodeling permitsAsk firstORS 105.464
Anything that disturbs old paint or building materialsLead disclosure covers most houses built before 1978, and DEQ's asbestos survey rule covers houses built before 2004Ask firstEPA; Oregon DEQ
Changes to the outside of the houseThe outside is what a buyer sees from the street, it can need permits, and in a historic district exterior work goes through city review before you startAsk firstCity of Portland, historic resource review
Interior paintWhat Realtors recommend most often before listingFixNAR, 2025

The thing sellers most want to rip out, and the thing we'd most like them to leave, is the original wood, the paneling and the built-ins that look dated. The urge is to paint over them, and paint is hard to undo. Clean the wood, oil it, light it well, and let it be the reason the house feels like what it is.

The wiring, if your house is from 1965 to the mid 1970s

This one gets its own section because the number is hard to ignore. The U.S. Consumer Product Safety Commission says a copper shortage in the mid 1960s pushed more aluminum branch wiring into houses. Homes built before 1965 are unlikely to have it. Cable installed from 1965 to the mid 1970s may. A national survey the CPSC cites found that homes built before 1972 and wired with aluminum were 55 times more likely to have one or more outlet connections reach "Fire Hazard Conditions" than homes wired with copper. (That survey looked at outlets only.)

You can check this yourself where the cable is exposed. The markings are printed on the cable jacket every few feet, so look in an unfinished basement, the attic or the garage. If it's aluminum, the CPSC recommends a permanent repair by a qualified electrician.

The paperwork before the sign goes up

The Home Energy Score. A house advertised for sale inside Portland's jurisdiction needs a Home Energy Score and report before it's listed, and the score has to appear in every advertisement. Check the "Jurisdiction" field for your address on PortlandMaps, because a Portland mailing address doesn't settle it. A private sale that's never advertised doesn't need one, and manufactured homes are exempt. The score runs from 1 to 10, based on the house's physical features and not your bills, and the city says a low score "does not mean it is poorly built."

The seller's disclosure. Oregon's form asks about roof leaks and repairs (5.A), moisture, water getting in and mildew odors (5.G), whether a house built before 1974 is bolted to its foundation (section 8), settling, soil, standing water or drainage (9.A), landslide and flood zones (9.C to 9.E), and remodeling permits. You answer it from your "ACTUAL KNOWLEDGE." That's worth thinking about before you start fixing things, because everything you fix now is something you'll know about when you fill it out.

Lead. Every mid-century Portland house was built before 1978, so the federal lead rule covers it. Before the contract, you have to disclose any lead-based paint information you know of, give the buyer the EPA pamphlet and a lead warning statement, and allow them a 10-day period to test.

Asbestos, if you're doing work before you list. Oregon DEQ says a residential building built before January 1, 2004 needs an asbestos survey by an accredited inspector before renovation or demolition, and a kitchen remodel needs the kitchen area surveyed. If you live in the house and you're working inside your own single-unit home, you're exempt, though DEQ recommends a survey or lab samples anyway. One thing worth knowing as a seller: whatever contractor a buyer hires later will be bound by this rule, even if you weren't.

The cheap and cosmetic stuff

In the 2025 Remodeling Impact Report from the National Association of Realtors and the remodelers' trade group NARI, the projects Realtors most often recommend before listing were painting the whole home (50%), painting one interior room (41%) and new roofing (37%). That's what Realtors recommend, which isn't the same thing as what a project returns.

On cost recovery, the same report put a new steel front door at 100%, a closet renovation at 83% and a new fiberglass front door at 80%. The 2025 Cost vs Value report, for the Pacific region and not Portland, had a steel entry door costing $2,545 and adding an estimated $5,228 at resale (205.4%), and a garage door costing $4,604 and adding an estimated $12,063 (262%). The same door gets two numbers because the two reports measure differently.

Staging matters for these houses, and lighter is better, because the house is doing most of the staging already. Clear the surfaces, open the sightlines, let the glass and the wood do the work, and bring in a few pieces that suit the era. Skip the full makeover.

If you're tempted to redo the kitchen first

Read Does renovating add value to a house in Portland? before you call anyone. In the 2025 Cost vs Value report's Pacific region, a midrange major kitchen remodel cost $86,480 and recouped 57.2% of that at resale. Of the 14 projects we pulled from that report, it costs the most and brings back the smallest share.

What the appraiser will see

Appraisers working to Fannie Mae's standard rate a house's quality from Q1 to Q6, and Q1 includes "unique, architect-designed." Somewhere a 1962 split-level just sat up a little straighter. They also rate condition from C1 to C6, and they have to report deferred maintenance, though minor deferred maintenance is generally acceptable "as is." So the fix pile matters for the appraisal too. We went through the rest of how appraisers handle these houses in Can a house with original mid-century features be appraised fairly?

The two weeks before you list

  1. Book the Home Energy Score, since you'll need it before the first advertisement.
  2. Fill out the seller's disclosure from what you know, and pull together receipts and permits for past work.
  3. Gather any lead-based paint information you have, because you'll disclose it before the contract.
  4. If the house was wired from 1965 to the mid 1970s, look at any exposed cable in the basement, attic or garage, and call a qualified electrician if it's aluminum.
  5. Walk the house with us and sort it into fix, leave and ask first.
  6. Paint where the walls need it.
  7. Make a list of what's original, for buyers and for the appraiser.

If you want the buyer's side of this, read How do I tell in 15 minutes whether a house deserves a second look?. For older houses there's How to read a 1920s Craftsman before you bid. Our selling, design and renovation pages say more about how we work, and the FAQ covers the rest. We don't do the work ourselves, so get bids from licensed contractors for your house.

Quick FAQ

What should I fix before selling a mid-century house in Portland?
Fix what a buyer's inspector will find and what Oregon's disclosure form asks about: roof leaks, moisture, drainage, and electrical problems like aluminum branch wiring in houses wired from 1965 to the mid 1970s. Leave the original character alone, and ask first about anything involving permits, lead, asbestos or the outside of the house.

Should I renovate or leave a mid-century house original before selling?
Leave the original character, the open plan, the glass, the wood and the built-ins, because it can't be put back once it's gone. Big interior renovations tend to return less than they cost: in the 2025 Cost vs Value report's Pacific region, a midrange major kitchen remodel recouped 57.2%.

Do I have to disclose lead paint when I sell a mid-century house?
Yes, if you know of any. For most housing built before 1978, which includes every mid-century house, you have to disclose known lead-based paint information before the contract, give the buyer the EPA pamphlet and a warning statement, and allow a 10-day period to test.

Does my mid-century house have aluminum wiring?
It might, if it was wired from 1965 to the mid 1970s; houses built before 1965 are unlikely to. Look for the markings printed on the cable jacket every few feet in an unfinished basement, attic or garage. If it's aluminum, the Consumer Product Safety Commission recommends a permanent repair by a qualified electrician.

Do I need a Home Energy Score to sell my house in Portland?
Yes, if it's advertised for sale inside Portland's jurisdiction, which you can check in the Jurisdiction field on PortlandMaps. The score has to appear in every advertisement, so get it before you list.

Getting ready to list?

Send us the details of your house, the era, the style and what's been changed, and ask us to walk it with you. Get in touch!

The Houselab Team @ Like Kind Realty

Sources

All retrieved October 19, 2026.

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