What window replacement costs around Portland in 2026

Plan on $450 to $1,800 a window, materials included, for most replacement jobs around Portland; $825 is the typical number (market data, November 2026) . Two things set most of the price: how big the window is and what its frame is made of. After that come the install method, whether it's upstairs, and whatever rot is hiding beneath the sill. Here's how we do window replacement.

What does one window cost to replace on Portland's west side?

Materials make up 55 % of this job on the sheet I work from. So of a typical $825, about $454 pays for the unit, flashing, foam and trim stock, and about $371 pays for installing it. That split is arithmetic on market data, not my quote, but it does show how much of what you pay goes to labour.

A small window in a ground-floor wall lands near the low end. Large sliders, a picture window above a stairwell, or any upstairs window push toward the high end. And an Oregon window bill has no sales tax line, since the state doesn't charge one.

How much for 2, 6, 10 or 20 windows?

The table below is plain multiplication of the one-window range. Use it to check whether a quote is in the ballpark; it isn't a price list.

Typical price times the window count, with materials, from market data for the Portland area (November 2026)

A large order may cost less than the multiplied figure, since setup, travel and cleanup happen once and get shared across more windows. Doing every window in one go makes sense when most of them have given out in a similar way, like fogged glass across the house. When half are still sound, pulling good windows only so they match rarely pays.

Keep an eye on the total. Three windows at the typical price come to $2,475, and Oregon requires a signed written contract on home work priced over $2,000. When a job quoted below $2,000 ends up above it, you should have that paperwork in five days. Our Oregon contract guide explains each form.

Does vinyl, fiberglass or wood cost more?

There's no line on the price sheet for each frame material, so I won't give dollar figures for each material. The ranking hardly changes from job to job:

• Vinyl: normally the lowest cost. Paint doesn't stick to it, so pick the colour carefully.
• Fiberglass: a step up in price, more rigid, and paintable.
• Wood or clad wood: the top of the range, and any bare wood has to be repainted on a schedule.

Our wet winters are why that last line matters. Paint on an uncovered wood sash wears thin, water sits on the lower rail, and the wood softens there first. Plenty of owners on the west side go with vinyl or fiberglass for that reason .

The window type counts as well. A picture window that doesn't open is cheaper than an operable one the same size, and bays and bows cost much more. In the parts of our zone that fall within Portland's city limits, such as Bridlemile, Hayhurst and Maplewood, the city requires replacement units in existing homes to be rated U-0.30 or better.

Why does full-frame cost more than an insert?

With an insert, the existing frame remains in the wall. Sashes are removed, a new unit is fitted into the existing frame, then sealed and trimmed. Fewer hours, slightly less glass, since the new frame nests inside the old.

Full-frame means the old window leaves completely, outside trim and all, down to the rough opening. Siding is trimmed back, the opening gets new flashing and wrap, and fresh trim finishes it. More hours, but you get to look at the framing around the window.

In a climate this wet, the flashing and the pan under the sill matter more than whose name is on the frame. A poorly flashed window seldom drips on the carpet; years later it shows up as mushy sheathing and a sill a screwdriver sinks into. Swapping a window yourself looks simple, and fitting the unit really is fast. The flashing is the step DIY jobs most often get wrong .

Which extra costs turn up after the old window comes out?

National cost sites mostly skip this part, and it's what catches owners off guard. With the old unit pulled, the sill and framing are in plain view.

Market ranges for the Portland area, November 2026 . In a home built before 1978, the lead rules in the section on older houses cover all four.

If rot has spread from the window into the wall, it turns into wood rot and siding repair work, and new outside trim can go into exterior painting. Upstairs windows need ladders or staging and add time. We don't haul away old units .

Does a window swap need a permit in Oregon?

Not for a straight swap in the same size hole. The Building Codes Division, the state's code office, puts window replacement with no structural change on its list of home projects that need no building permit. A new opening, or resizing an old one, is another matter: that takes a permit, and any work outside the exemption is handled by the local building office.

Portland puts it in its own words: same header position and size and no smaller clear opening means no permit, while widening means a permit. Even without one, two city rules still hold. An escape window in a bedroom or basement must open to 5.7 sq ft or more, with the bottom of the opening 44 inches or less above the floor. Glass in hazardous locations, next to a door or above a tub or shower for example, must be tested safety glass. I couldn't find a window-specific page from Beaverton or Washington County, so I'm not claiming any local rule for them.

Price-wise, enlarging an opening brings a permit, a new header and extra hours, so we quote it as its own job .

Does a pre-1978 house cost more?

The Oregon Health Authority also names window repair and replacement as covered work.

Lead-safe practice adds plastic sheeting, careful cleanup and a verification check, and each takes time. Expect an older house to be quoted higher than the ranges on this page .

In our area this comes up constantly. Large parts of Cedar Hills date from the 1950s and 60s, Cedar Mill mostly followed in the 60s and 70s, and Bethany is mainly 1990s and 2000s construction. Lead paint work is not something we do ; see what we don't do for the rest.

Can windows earn a 2026 tax credit or utility rebate?

Not through the federal credit, going by the IRS page on November 8, 2026. The Energy Efficient Home Improvement Credit did cover qualifying exterior windows, capped at $600 per year across windows and skylights, but the IRS says it applies to improvements made by the end of 2025. No extension is mentioned, so a 2026 install doesn't qualify under it.

Energy Trust of Oregon's window page currently shows a single offer worth $10 per sq ft, and it's limited to homes in Southwest Washington that heat with NW Natural gas. Nothing is listed for Oregon homes. A few pages that rank for this search still promise Oregon owners both. Read the IRS and Energy Trust pages yourself before counting on money back, since programmes change. This isn't tax advice.

Should 20-year-old windows be repaired or replaced?

The window's age settles nothing on its own; the failure does. Set one replacement ($450-$1,800) beside two repair rows from the same sheet:

Market ranges, Portland area, November 2026 .

Replacement makes sense when several units have lost their seals and fog between the panes, when a frame has rotted all the way through, or when nobody makes parts for that window now. If a single piece broke, repair it. Bethany's houses have reached 25 to 30 years, which is when original builder windows usually raise this question .

Is there a cheaper season for new windows?

I have no numbers showing that prices dip in a particular season, so no discount promise here. New windows are built to order, and the lead time tends to fix your install date more than the month does . Full-frame work leaves the wall open for a while, so a stretch of dry weather in the forecast counts for more here than in most places.