About Our Deck Building & Repair Service in Seattle
Kolmo builds new decks and rebuilds worn ones across Seattle, the Eastside and South King County. That covers new decks on pressure-treated framing, resurfacing a sound frame in composite, PVC, cedar or ipe, and replacing railings and stairs in wood, aluminum, composite, cable or glass. You can price any of them in the deck calculator before anyone visits.
Whether a deck needs a permit depends on the city, not the project. Seattle requires one for a deck more than 18 inches above the ground, or any deck in an environmentally critical area. Bellevue exempts installing or repairing a deck less than 30 inches above the ground, but requires a permit to repair deck or porch handrails and stairs. Kirkland exempts a deck only when it is 30 inches or less above grade, not over a basement or story below, and not part of an accessible route. Kolmo checks the rule for your address and pulls the permit when one is required. Compare the rule in 16 cities.
Hiring Kolmo for Deck Building & Repair in Seattle
Kolmo Construction is a licensed Seattle general contractor based at 4018 NE 125th St, Seattle. We take on deck building & repair in Seattle, Bellevue, Kirkland, Redmond, Sammamish, Issaquah, Renton, Kent, Federal Way, Mercer Island, Shoreline, Tacoma, Lakewood, Puyallup, Everett and Lynnwood.
- License, bond and insurance
- Washington State General Contractor License KOLMOL*753JS, issued by WA Labor & Industries. The license, bond and insurance records are listed on kolmo.io/verify, each with a link to the state lookup.
- Reviews
- 5.0 stars from 24 Google reviews. Read them on Google
- Deck Building & Repair projects
- Composite Deck Resurfacing — Seattle — Seattle, WA, completed September 2026
- Composite Deck Board Replacement — Bellevue — Bellevue, WA, completed August 2026
- Trex Railing Replacement — Upper Deck & Stairs — Seattle, WA, completed July 2026
- Price
- Planning prices for a Seattle job are in the deck building & repair calculator, which itemizes materials, labor and, where the job needs one, Seattle's permit fee. The calculator shows a range from 15% below to 15% above its total. It is a planning figure, not a quote.
- How quoting works
- Request a quote or call (206) 410-5100 (Mon-Fri 8am-5pm, Sat 9am-1pm). Kolmo meets you at the house to see the job, and the quote comes back in writing, itemized line by line. Frederic Atallah runs Kolmo's site walks, scope, crews and schedule, and is the owner of record on the license.
Key Features & Benefits
New decks: pressure-treated framing with composite, PVC, cedar or ipe decking
Resurfacing a sound existing frame with new decking
Railing and stair replacement: wood, aluminum, composite, cable or glass
Hidden-fastener installs and mitered picture-frame borders
Decking installed to the manufacturer's specifications
A permit check for your address, and the permit pulled when the city requires one
Our Deck Building & Repair Process
Price it first
Site visit
Permit check
Build
Final walk-through
Price it first
The deck calculator gives a range by size, decking, railing and finish before we visit.
Site visit
We measure the deck, look at the frame and footings, and note the height above grade, which sets the permit rule in most cities.
Permit check
We read your city's rule for your address. If a permit is required, we prepare the drawings and file it.
Build
Demolition and disposal, framing or frame repair, then decking and railings installed to the manufacturer's specifications.
Final walk-through
The city's final inspection where a permit was pulled, and a walk-through with you.
Recent Deck Building & Repair Projects in Seattle
Plan Your Deck Building & Repair Project
Seattle Deck Cost 2026: $/sqft by Material + Permit Trigger Explained
Real 2026 Seattle deck cost ranges per square foot by material (pressure-treated, cedar, composite, ipé), plus when SDCI requires a permit (the 18" rule) and the all-in cost with railing, posts, and inspection.
Read the guideEstimate your deck building & repair cost
Configure scope and get an itemized material + labor breakdown for your specific Seattle project.
Open the calculatorReady to Start Your Deck Building & Repair Project in Seattle?
Contact us today to schedule a free consultation and get a detailed quote. Our licensed team is ready to bring your vision to life with expert craftsmanship and attention to detail.
Or call us directly at (206) 410-5100