Justin and his team were there for us every step of the way from the start of a big leak to the repair and upgrade since they were already here!
Running out of room doesn't mean you have to move. A well-planned addition adds the space your family needs and the value your property deserves — but only if it's engineered, permitted, and built correctly from the ground up.
J. Jensen Enterprises manages home additions and new construction projects from initial design coordination through permitting, framing, and finish work. We work directly with architects and structural engineers when a project calls for it, so every addition is sound before the first stud goes up — not just code-compliant on paper.
What we handle:
- Room additions and second-story builds
- In-law suites and multi-generational living spaces
- Garage conversions and structural expansions
- Permit coordination and inspection scheduling
- Design-build coordination with licensed architects and engineers
- Full project management from foundation to final finishes
Why it matters: An addition touches your foundation, your roofline, your electrical, and your structure all at once. Get any one of those wrong and you're not looking at a punch-list item — you're looking at a rebuild. We plan every addition with the same standard we'd want for our own home: nothing gets covered up until it's been checked, and nothing gets signed off until it's actually right.
Reviews
Take a look at what your neighbors are saying about us.
Service Areas
Proudly Serving Renton & Surrounding Areas
- Renton
- Seattle
- Tacoma
- Bellevue
- Kent
- Bryn Mawr-Skyway
- Tukwila
- Fairwood
- SeaTac
- Mercer Island
- East Hill-Meridian
- Burien
- West Lake Sammamish
- Issaquah
- Covington
- DesMoines
- City of Sammamish
- Maple Valley
- Federal Way
- Sammamish
- Auburn
- Kirkland
- Redmond
Areas We Serve
- Renton, WA
- Seattle, WA
- Tacoma, WA
- Bellevue, WA
- Kent, WA
- Bryn Mawr-Skyway, WA
- Tukwila, WA
- Fairwood, WA
- SeaTac, WA
- Mercer Island, WA
- East Hill-Meridian, WA
- Burien, WA
- West Lake Sammamish, WA
- Issaquah, WA
- Covington, WA
- DesMoines, WA
- City of Sammamish, WA
- Maple Valley, WA
- Federal Way, WA
- Sammamish, WA
- Auburn, WA
- Kirkland, WA
- Redmond, WA