Soundproofing & General Contracting
in Seattle, WA
Family-owned, licensed & insured. Serving Seattle and King County, WA since 1983 — with real acoustic isolation, quality drywall, and full interior remodeling. Call (425) 420-5641 for a free in-home estimate.
Seattle Soundproofing — Done Right.
Seattle's density, light rail expansion, and I-5 corridor mean noise is the #1 complaint we hear on listings and refinancings. From condos in South Lake Union to craftsmans in Wallingford, we deliver real acoustic isolation — not just more insulation.
Real acoustic isolation requires four principles: mass, decoupling, damping, and sealing. Jensen Contracting has been designing soundproofing systems for Seattle-area homes for decades — and we bring that expertise to every project in Seattle.
What We Soundproof
Common Seattle soundproofing projects we handle every month.
Walls, Floors & Ceilings
Critical for shared-wall townhomes, duplexes, ADUs, and stacked apartments. We use mass-loaded vinyl, green glue, resilient channels, and double-stud assemblies to measurably reduce decibel transfer — not just "sound a little quieter."
Home Studios & Media Rooms
If you record music, podcasts, or stream professionally from a Seattle home — or just want a theater room that doesn't wake the house — we build purpose-designed rooms with proper isolation clips, mass, and sealing.
Doors & Windows
Often the weakest link in any soundproofing project. We upgrade doors with solid-core cores, acoustic gaskets, and threshold seals; and add laminated-glass or interior inserts to existing windows for measurable street-noise reduction.
Why Seattle Homeowners Choose Us
Seattle is where Jensen Contracting has operated since 1983. Our office is in Ballard. Our crews know every permit counter in the city and have worked on every type of structure the city's building stock has to offer — from 1910 craftsmans to 2022 apartment conversions.
We cover Ballard, Queen Anne, Capitol Hill, Fremont, Wallingford, Greenwood, Green Lake, University District and every neighborhood in between. Zip codes: 98101–98199.
- 40+ years serving King County — since 1983
- Licensed & insured in Washington State — WA Lic # JENSEC1877LI
- One point of contact — a project manager who answers directly to you
- Written, itemized bids — no surprise charges
Greater Seattle
Every Service We Offer in Seattle
Soundproofing is where we lead — but we're a full-service general contractor with four more core disciplines.
General Contracting
Residential and commercial projects in Seattle, managed end-to-end by a single licensed GC.
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Drywall & Plaster
Drywall install, Level-5 finish, and plaster repair for Seattle's older housing stock.
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Interior Remodeling
Kitchens, baths, finish carpentry, and custom trim throughout Seattle homes.
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Property Maintenance
Punch-list repairs, rental turnovers, and property upkeep in Seattle and nearby.
Learn moreNot in Seattle? We Cover the Whole Region.
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Ready to Build Something Right?
Call us or request an estimate online. We'll visit your home, scope the work, and send you a clear written quote.