Siding, windows, roofing, trim, decks and covered outdoor rooms for Lake Oswego homes, built to shed water in a climate that rains most of the year. We treat the exterior as one system — barrier, flashing and cladding — and handle HOA and city approvals.
Lake Oswego’s tall canopy is a big part of its appeal, and it’s hard on houses: shaded walls that never fully dry, moss on roofs, needles in gutters, and rot where trim meets siding. We open the wall, find the source of the water, fix the barrier and flashing, and then reclad.
Siding repair and replacement, rainscreen and flashing, windows and doors, roofing, gutters, trim, exterior paint, decks and covered patios — with Mountain Park and Westlake HOA submittals and City of Lake Oswego permits handled.
Fiber cement, engineered wood and cedar over a properly detailed water-resistive barrier — with rot repair and flashing corrected before the new siding goes on.
Full-frame and insert replacement, patio and entry doors, with sill pans and head flashing installed to the manufacturer's wet-flashing detail.
Architectural composition and standing-seam metal, plus underlayment, ventilation, valley and pipe flashing, gutters and downspout routing away from the foundation.
Framed decks, covered patios and outdoor kitchens — engineered footings, flashed ledgers, and a roof that makes the space usable eight months a year.
We inspect the siding, trim, windows and roof, open test areas where rot is likely, and tell you whether to repair or replace.
HOA submittals where required, City of Lake Oswego permits for structural work, windows or decks, and tree protection where needed.
Rot repair, weather barrier and flashing, then siding, windows, roofing and trim, finished and inspected.
Lake Oswego homeowners choose Serden Group because one team handles the HOA, the permits and the whole envelope — built to shed water in the Pacific Northwest.
Great experience working with this company. They were professional, responsive, and the quality of their work was solid. They even took the time to treat me to lunch and go over the project details, which I appreciated. Would recommend.
The SERDEN Group did a complete remodel of our two upstairs bathrooms. Every step of the way Dennis, and his team, were communicative, kind, timely, and productive. They worked diligently, caring about the impact of having workers in your home. Everyone was friendly and attended to our creative ideas for the bathrooms. In the end we have two amazing new bathrooms. Our family is grateful for SERDEN and are wonderfully reminded daily of their excellent work. Thank you!
I recently hired Serden Group for a full kitchen and bathroom remodel, and I couldn't be happier with the results! From start to finish, the team was professional, reliable, and detail-oriented. The quality of their work is outstanding — everything from the tile installation to the cabinetry and finishes looks beautiful and well-crafted. They completed the project on time and within budget, which is rare to find these days. I highly recommend Serden Group to anyone looking for top-quality remodeling work. They truly exceeded my expectations!
I had a very pleasant experience with SERDEN GROUP company. They remodeled my bathroom, and I am completely satisfied with the result. Fast and high-quality work. Denis answered all of my questions, suggested great solutions for the renovation, and delivered everything he promised. I 100% recommend them.
Had the pleasure to work with this team on a project for one of their clients. They followed through with every request from start to finish and we can proudly say that, they really put their best foot forward with all their work. Our team would love to continue to work together for future jobs!
Local Knowledge · Lake Oswego, OR
Most exterior failures here trace back to water that couldn’t get out. These are the issues that shape an exterior scope in Lake Oswego.
An exterior remodel in Lake Oswego, OR typically costs $50,000–$120,000 in 2026 for full siding replacement or siding plus windows. Single-system projects such as a roof or window package start around $18,000, and full envelope renewals run $120,000 or more. Homes in Mountain Park and Westlake need HOA approval for exterior changes.
Heavy tree cover and long wet seasons keep north and shaded walls damp.
Built in phases on Mt. Sylvania from the late 1960s into the 1980s. Interior work is yours to decide; anything that changes the exterior needs written approval from the Mountain Park HOA architectural committee as well as city permits.
Larger two-story homes with builder-grade finishes that are now 30–40 years old. The Westlake HOA design review committee must approve exterior changes — siding, roofing, windows, paint and tree removal.
Some projects need approvals beyond a standard permit.
| Scope | Typical cost | Timeline |
|---|---|---|
| Roof replacement | $18K–$45K | 1–2 weeks |
| Window package | $20K–$50K | 1–3 weeks |
| Full siding with rainscreen | $50K–$120K | 4–8 weeks |
| Full envelope renewal | $120K+ | 8–12 weeks |
Structural repairs, enlarged window openings, most decks and covered patios need a City of Lake Oswego building permit, and work near protected trees may need a tree protection permit. Like-for-like siding or roofing replacement is often simpler, but we confirm scope with the city.
HOA approval is separate. In Mountain Park and Westlake we prepare the submittal — materials, colors and drawings — before scheduling work.
From First Addition and Old Town to Lake Grove, Westlake, Palisades and Mountain Park — plus West Linn, Dunthorpe and Tualatin. We prepare Mountain Park and Westlake HOA submittals as part of the job. Our Lake Oswego office is at 333 S State St, Lake Oswego, OR 97034 — design consultations by appointment.
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Three tiers cover most exterior projects. Figures are installed and include tear-off, disposal, barrier, flashing, trim and permits where required. Rot repair is priced as a written allowance.
Ranges are planning figures, not quotes. Your fixed price comes after a walkthrough, test cuts and a written scope.
Both sides of the lake, from 1920s First Addition cottages to 1980s Westlake and Mountain Park homes.
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Everything Serden Group builds in Lake Oswego, the same service in nearby cities, and the planning guides clients read before they start.
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