A BETTER BUILD
BEGINS WITH KOI
Tacoma's trusted design-build experts.
Home Remodeling Contractor in Tacoma & South Puget Sound WA
KOI Build Co is a home remodeling contractor based in Tacoma, serving homeowners across Pierce and Thurston counties, from Gig Harbor and University Place to Puyallup, Lacey and Olympia. From custom kitchen remodels and luxury bathroom renovations to full home transformations, additions, decks and more, our licensed and insured team delivers exceptional craftsmanship with clear communication at every step.
With over 20 years of experience in the South Puget Sound region, KOI Build Co helps homeowners upgrade and reimagine their spaces with a proven design-build process. We handle everything from initial consultation and detailed design through permitting, construction and final walkthrough, so your remodeling project stays on time, on budget and aligned with your vision.
Whether you need a full kitchen remodel in Tacoma, a home addition in University Place, a deck in Gig Harbor or a whole-home renovation anywhere in South Puget Sound, KOI Build Co provides tailored solutions and premium materials. Our team focuses on functionality, durability and aesthetic details, creating spaces that look beautiful, perform well and add long-term value to your home.
Our Work
Featured Projects
Real jobs we have finished, from kitchens and baths to decks, build-outs and custom builds.
Tiny homes & studios
Custom She-Shed & Deck
Waterfront backyard studio with a metal roof, French doors and a new wood deck.
Painting
Exterior Repaint
Board-and-batten and lap siding repainted, windows masked and the beds covered before a brush touched the house.
Remodeling
Kitchen Remodel
Natural wood cabinetry, stone counters and a wood plank ceiling.
Remodeling
Bathroom Remodel
Frameless glass walk-in shower beside a tiled corner soaking tub.
Additions
Basement Build-Out
New stud walls framed and the mechanicals run, ready for insulation and drywall.
Custom homes
Vaulted Timber Ceiling
Plank-clad vaulted ceiling with exposed timber trusses and a dormer window above the ridge.
Our Philosophy
Built on Integrity.
Driven by Excellence.
As the owner of KOI Build Co, I approach every project like it’s my own home—no shortcuts, clear communication, and craftsmanship that holds up for decades.
My philosophy is simple: do it right the first time, be honest about costs and timelines, and sweat the details so you don’t have to. I’m obsessed with process and planning, but I never forget that we’re ultimately building spaces for real families, not just floor plans. Personally overseeing each project from design to final walkthrough.
Real Stories
What Our Homeowners Say
“I Had a small area of deck that was rotting and needed to be replaced. Thomas Hansen made all arrangements, and Irving did the labor/work. I couldn't be happier with the outcome. Thomas and Irving were both very professional, courteous, punctual, and I told them that your company is my forever GC. If there were 10 stars, I would rate them that high. So so happy with the results.”
Deck construction
“I have worked with KOI on multiple projects and will definitely continue to do so. His drive for excellence and perfection is amazing, great communication for everything going on with projects. for the quality of work this company provides they are decently priced and everything is laid out in front of you for a clear well managed project. I would highly recommend reaching out to Chris if you are looking to do any project, big or small.”
Deck construction · Demolition · Roof repair · Exterior painting
“Chris Johlfs and his team are very professional, skilled, thorough and reliable. [Their] program provides clear, detailed plans, contracts, billing agreements and activity along with daily progress reports with accompanying photos. We highly recommend this company.”
Deck construction · Exterior painting
“I was very impressed with Koi, I had the pleasure of working with Thomas. We were able to communicate our vision with him and he was able to see what we needed. Great communication, honest and straightforward folks! Highly recommend!!”
“Chris and his crew are very friendly and professional. They did an awesome job. The house looks great. They made sure all garbage and paint was cleaned up. Very pleased with this company. Would use them again.”
Exterior painting
“The KOI team were a pleasure to work with. The final house painting project was perfect. They arrived on time and cleaned up all waste after the job was finished. I would recommend them to anyone wanting house painted.”
Exterior painting
Why Trust KOI
Built on Trust & Excellence
Over 20 years of experience serving South Puget Sound with integrity and quality craftsmanship.
Licensed & Insured
Fully licensed in Washington State with comprehensive insurance coverage
20+ Years Experience
Two decades of owner-led home remodeling expertise
Locally Owned
Proudly serving Olympia and the South Puget Sound region
A BBB Rating
Rated A by the Better Business Bureau
Family-Owned
A family business treating every home like our own with quality and precision
100% Satisfaction
We don't stop until you're completely happy with the final result
Your Family's Story
Begins at Home
Let our trusted design-build experts create your perfect setting. From early planning through a lifetime of memories, our team is committed to delivering exceptional results, unparalleled service, and a remodeling experience you can enjoy.
What We Do Best
Expert Home
Remodeling Services
As Tacoma's trusted remodeling company, we deliver exceptional craftsmanship and innovative design solutions. From kitchen renovations to complete home transformations, our experienced team brings your vision to life with precision and care.
Custom Kitchen Remodeling
Transform your kitchen into a stunning culinary space with premium materials.
Luxury Bathroom Renovations
Create a spa-like retreat with elegant fixtures and modern design.
Whole-Home Transformations
Complete home remodels that maximize space and functionality.
Energy-Efficient Upgrades
Reduce utility bills with sustainable, eco-friendly home improvements.
Get Better Results From
A Proven Process
The process of remodeling can and should be enjoyable! When you find the right team for your project, one that can guide you through every step of a finely tuned process, your design build remodeling experience can be as remarkable as your beautiful, new space.
Consultation
We listen to your vision and provide honest assessment.
Design
Our team creates detailed plans and 3D renderings.
Planning
We handle permits, materials, and schedule.
Construction
Skilled craftsmen bring your vision to life.
Completion
Final walkthrough and your complete satisfaction.
Transformations
See the Difference
Real projects. Real results. Real transformations from our satisfied homeowners.
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Modern Kitchen Transformation
Olympia, WA
Complete kitchen remodel with custom cabinetry, quartz countertops, and premium appliances.
Timeline
6 weeks
Investment Range
$45k - $65k
Key Features
Frequently Asked Questions
Everything you need to know about working with KOI Build Co.
Project timelines vary based on scope and complexity. A kitchen remodel typically takes 4-6 weeks, while a full home renovation may take 8-12 weeks. During your free consultation, we'll provide a detailed timeline specific to your project.
Yes! We provide free, no-obligation estimates for all projects. We'll visit your home, discuss your vision, take measurements, and provide a detailed quote with transparent pricing.
Absolutely. KOI Build Co is fully licensed, bonded, and insured in Washington State. We carry comprehensive liability insurance and workers' compensation for your peace of mind.
Olympia, Tacoma, Lacey, Tumwater, and all of South Puget Sound. If you don't see your town, give us a call and we will tell you straight away.
Yes, we manage all necessary permits and coordinate with local building departments. We ensure every project meets or exceeds code requirements.
We offer flexible payment plans. Typically, we require a deposit to begin, with progress payments tied to project milestones. Final payment is due upon completion and your satisfaction.
Yes, we stand behind our craftsmanship with a 2-year workmanship warranty on all projects. Materials also carry manufacturer warranties.
Simply call us at (253) 348-1847 or fill out our contact form. We'll schedule a free consultation to discuss your project and provide an estimate.
Still have questions?
We're here to help
Visit Us
We're Located in Tacoma, WA
Proudly serving homeowners across Pierce and Thurston counties from our shop on South Tacoma Way.
2622 S Tacoma Way, Tacoma, WA 98409
Serving South Puget Sound & Surrounding Areas
Popular Service Areas
Let Our Experts
Answer Your Questions
Have questions about your project? Get a free consultation and discover how we can transform your home.
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