General Contracting Services in Seattle
Full-service general contracting for Seattle-area exterior projects. Coordinated multi-trade work for roofing, siding, gutters, decks, and painting in a single project.
Seattle General Contractor Since 2007
K Single Corp is a licensed Washington State general contractor (WA #KSINGSC842B3), bonded and insured, with 25+ years of experience and 15,000+ completed projects across King, Snohomish, and Pierce counties. Our multi-trade scope covers roofing, siding, gutters, decks, painting, skylights, and full exterior renovations, all delivered by in-house crews rather than layered subcontractors.
You get one point of contact, one written proposal, one timeline, and one unified warranty. We coordinate every trade in the correct sequence, pull permits, manage material lead times, and run quality control on every phase. No chasing four contractors, no scheduling conflicts, no finger-pointing. Just a single project manager accountable for the entire exterior from assessment to final walkthrough.
Licensed & Insured
WA #KSINGSC842B3, fully bonded, general liability + workers comp on every project.
10-Year Warranty
Workmanship warranty on every install, plus manufacturer material warranties up to 30 years.
4.7-Star Google
172+ Google reviews across King, Snohomish, and Pierce counties since 2007.
What's included with our general contracting service
Get a Free General Contracting Estimate
Most estimates scheduled within 48 hours. No obligation, no high-pressure sales, written line-item quote.
Request Free Estimate Call (206) 659-4349172+ verified Google reviews from Seattle, Bellevue, Kirkland, and Greater Seattle homeowners.
K Single Corp coordinates all exterior trades (roofing, siding, gutters, painting) with one crew, one timeline, and one warranty, saving homeowners 10 to 15 percent compared to hiring separate contractors. Contact us for a free estimate.
The most common projects we coordinate include full exterior remodels (roof, siding, gutters, and paint together), storm damage restoration involving multiple trades like roof repair plus siding patching, and phased upgrades where homeowners tackle their roof one year and siding the next. We also manage insurance claim projects that require coordination between roofing, siding, and trim work to restore a home to pre-damage condition. Browse our project portfolio for completed multi-trade examples.
Why General Contracting
What Sets Us Apart
One Team for Everything
Roofing, siding, gutters, painting, and trim managed by a single crew. One point of contact, one timeline, one warranty.
Bundled Project Savings
Combining exterior projects saves 10 to 15 percent compared to hiring separate contractors. Shared scaffolding and crew mobilization.
Single Unified Warranty
One warranty covers all trades instead of tracking separate warranties from multiple contractors.
Full Permit Coordination
We pull all necessary permits and schedule all required inspections across every trade in your project.
15,000+ Projects Completed
Proven track record across the greater Seattle area since 2007. Licensed, bonded, and insured in Washington State.
At a Glance
WA License
KSINGSC842B3
Credentials
Licensed, Bonded, Insured
Service Area
King, Snohomish, Pierce
Warranty
10-year workmanship
Our General Contracting Process
Comprehensive Assessment
We evaluate your entire exterior: roof, siding, gutters, trim, fascia, soffits, and paint condition.
Integrated Proposal
A single detailed proposal covering all recommended work, with clear pricing for each component and bundling savings.
Material Selection
We coordinate material choices across all trades so roof color, siding style, gutter color, and paint all work together.
Permitting
All necessary permits pulled and inspections scheduled across every trade.
Sequenced Installation
Work ordered optimally: roofing first, then siding and flashing, then gutters, then painting and finish work.
Final Walkthrough
We walk you through the completed project, review all warranty coverage, and confirm your satisfaction.
Comprehensive Assessment
We evaluate your entire exterior: roof, siding, gutters, trim, fascia, soffits, and paint condition.
Integrated Proposal
A single detailed proposal covering all recommended work, with clear pricing for each component and bundling savings.
Material Selection
We coordinate material choices across all trades so roof color, siding style, gutter color, and paint all work together.
Permitting
All necessary permits pulled and inspections scheduled across every trade.
Sequenced Installation
Work ordered optimally: roofing first, then siding and flashing, then gutters, then painting and finish work.
Final Walkthrough
We walk you through the completed project, review all warranty coverage, and confirm your satisfaction.
Built for Pacific Northwest Conditions
General Contracting in Seattle's Climate
37+ inches of annual rain, 150+ overcast days, salt-air drift off Puget Sound, freeze-thaw at higher elevations. Every general contracting project we deliver is spec'd for what Seattle actually throws at it.
Weather-Sensitive Scheduling
Outdoor trades like roofing, painting, and exterior caulking are weather-dependent. We build PNW rain windows into the schedule and stage indoor or covered work for wet stretches.
Moisture Sequencing
Order matters in a wet climate. Roof first, then flashing and gutters, then siding and trim, then paint. Sequencing wrong traps moisture and voids warranties.
Permit Timelines
Seattle, Bellevue, and unincorporated King County review windows vary from 2 to 8 weeks. We file early and bundle permits across trades to keep the project moving.
Supplier Lead Times
Specialty roofing, custom siding profiles, and composite decking can run 4 to 10 weeks. We lock orders at proposal sign-off so materials arrive before crews mobilize.
Recent Work
General Contracting Projects in Seattle
My job was very challenging. Actively leaking torchdown flat roof in winter over the holidays during an atmospheric rive...
Perfect experience! We had a difficult roof line and a structural challenge. The estimator worked with me to come up wit...
I had a great experience with K Single Corp. I had some fascia and soffit repairs done. Their crew was professional and...
Quality materials and craft, attention to detail and timely, low key service that went beyond expectations at each turn....
Very satisfied with the work they did to repair our roof, gutters and chimney that were damaged by trees that fell on ou...
Fantastic experience with K Single Corp. Isidro and team were hyper-responsive and provided a fair price. Their customer...
We recently contracted K Single Corp to repair and reconstruct our bedroom level deck. Isidro Amaya was prompt in provid...
We were in a jam and needed someone quick. We googled and found K Single and they absolutely exceeded expectations. Did...
They replaced siding around a large window when other companies were nervous to take on the project. They also were able...
Love the new front porch, stairs and pavers. From beginning to end K Single Corp did a great job. I will definitely use...
Common Questions
Frequently Asked Questions
What does general contracting include at K Single Corp?
How much does a full exterior remodel cost in Seattle?
Why hire one contractor for multiple exterior projects?
Does K Single Corp handle permits for general contracting projects?
How long does a full exterior remodel take?
Do you work on insurance claims for storm damage?
Can I do my exterior project in phases?
Other Services We Offer
From roofing to siding, gutters, decks, and more. K Single Corp handles it all.
Residential Roofing
Complete residential roofing services for Seattle-area homeowners. From full replacements to storm damage repairs, K Single Corp delivers proven results backed by 25+ years of experience.
Commercial Roofing
Reliable commercial roofing for Seattle-area businesses. TPO, PVC, metal, and flat roof systems installed and maintained by K Single Corp's experienced crew.
Roof Installation
Professional new roof installation for Seattle homes and businesses. Every material type, expert crews, and a 10-year workmanship warranty from K Single Corp.
Roof Repair
Fast, reliable roof repair for Seattle homes and businesses. Fix leaks, storm damage, missing shingles, and flashing failures.
Ready to Get Started?
Request a free estimate and find out why 15,000+ homeowners trust K Single Corp.
Most estimates completed within 24 hours.