Window Replacement in Gresham, OR

Who Replaces Windows in Gresham?

Gorilla Works does, and Gresham is our home base, not a drive we add to the bill. We install Milgard windows across all three Gresham ZIP codes, 97030, 97080 and 97233. Most of our window jobs, about 8 in 10, are full-frame tear-outs rather than inserts, the old windows are hauled away the same day, and the written price names the exact Milgard series and glass for every opening. A same-size swap in Gresham needs no building permit; a bigger or new opening does, and we pull that one.

Half of Gresham Was Built Before 1980

Gresham grew in a hurry. The town went from about 4,000 people to more than 10,000 during the 1960s, and the building kept going from there. The Census Bureau's 2020-2024 American Community Survey counts 44,005 homes in the city with a median year built of 1981, and 21,160 of them, about 48%, went up before 1980. The single biggest decade was the 1970s, with 10,897 homes.

That is the window story in one number. A house from the 1970s was built with single-pane aluminum or early double-pane windows, and many still have them, or have a first replacement set from the 1990s whose seals are now failing. Fog between the panes, sliders that stick, condensation running down onto the sill: those are the calls we get from Rockwood, Centennial, Hollybrook and Powell Valley.

When a window that old comes out, we look hard at the bottom of the rough opening. Decades of rain and condensation running off the glass is what softens the wood under the sill, and the only way to see it is to take the frame all the way out. That is the main reason we do full-frame replacements on most Gresham jobs instead of sliding an insert into an old frame we cannot check.

What the City of Gresham Says About Window Permits

Gresham's own list of projects that do not require permits includes "door and window replacements (where no structural member is changed)." The state rule behind it, in the 2026 Oregon Residential Specialty Code that took effect October 1, 2026, adds a line people miss: a replacement window still has to meet the code's energy chapter, permit or not. Every Milgard window we install carries its NFRC label so you can read its rating.

• Bigger or new openings. Widening a window, cutting a new one or changing a header is structural, so it needs a building permit from the City of Gresham Permit Center at City Hall, 1333 NW Eastman Parkway. We pull it.
• Gresham Butte. Lots on the Butte sit in the Hillside and Geologic Risk Overlay. A same-size swap is still a swap, but if you want to enlarge openings on a hillside house we check the overlay rules for your lot first.
• Landmarks and design districts. Only homes on Gresham's Historic and Cultural Landmarks List fall under the landmark standards, and remodels in the Rockwood Design District go through design review. For nearly every Gresham house neither applies, and we look up your address to be sure.

Not sure which applies to you? Send us the address and we will check it before the measure.

From Measure to Haul-Away

1. Measure and a written price. We measure every opening, check your address for city rules, and hand you a price in writing that names the Milgard series and glass for each window.
2. Order. Milgard builds the windows to those sizes. Bedroom windows are checked against egress before the order goes in.
3. Tear-out and install. The crew comes from a shop a few minutes away, removes the old window and frame, checks the opening for soft wood, flashes the sill, sets the new unit level and seals it.
4. Trim, cleanup, haul-away. Trim goes back on, the old windows leave with us, and you get the Milgard warranty paperwork.

The flashing detail comes from bigger jobs. Exteriors Design, the company behind Gorilla Works, installs windows and cladding on commercial buildings across the Northwest, and a Gresham sill that faces the east wind gets the same water-management care. Financing options for qualified homeowners are available, including zero-down, so a whole-house window job does not have to be split up. All financing is subject to credit approval. Rates, terms and payments may vary based on credit.

Still comparing products? Read the Portland window guide, vinyl vs. fiberglass, or what a job runs on the window replacement cost guide.

What Window Replacement Costs in Gresham

For a Gresham home, plan on roughly $1,200 to $3,700 per window installed, depending on the Milgard line and the size and shape of the opening.

These are our own installed prices per window. Size, style, shape and the condition of the existing opening decide where a window lands, and we install full-flange (full-frame) on almost every job. Windows are custom ordered, so install day is usually 3 to 4 weeks after you sign. More detail in the window replacement cost guide.

Prices vary by size, style, shape and existing conditions.