What We Offer

Comprehensive Home
Remodeling Services

From flooring to full home transformations, KOI Build Co delivers exceptional craftsmanship and personalized service for every project.

Why Choose KOI

Home Remodeling Services in Olympia, Lacey, Tumwater & South Puget Sound WA

KOI Build Co offers a full range of home remodeling services for homeowners in Olympia, Lacey, Tumwater and communities across South Puget Sound, WA. From single-room upgrades to whole-home transformations, our licensed and insured team provides start-to-finish support with clear communication, detailed planning and high-quality craftsmanship.

As a design-build contractor, we handle every phase of your project under one roof, including consultation, design, permitting, construction and final walkthrough. Our services include kitchen and bathroom remodeling, home additions, custom decks and patios, roofing, flooring, painting, ADUs and DADUs, tiny homes and complete home renovations tailored to your goals and budget.

Whether you are updating finishes, adding square footage or completely reimagining how your home functions, KOI Build Co delivers remodeling services designed around the way you live. We focus on durable materials, thoughtful layouts and clean execution so your project adds long-term comfort, usability and value to your South Puget Sound home.

Our Expertise

Services We Provide

Flooring

Flooring

Hardwood, luxury vinyl, tile, laminate & carpet installation. Expert craftsmanship for beautiful, durable floors.

Hardwood Installation
Luxury Vinyl Plank
Tile & Stone
Carpet Replacement
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Home Additions

Home Additions

Expand your living space with custom room additions, sunrooms, master suites, and bonus rooms.

Room Additions
Sunrooms
Master Suites
Bonus Rooms
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New Homes

New Homes

Custom home building from the ground up. Let us build your dream home with quality materials and expert design.

Custom Homes
Design-Build
Project Management
Quality Assurance
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Painting

Painting

Interior and exterior painting services. Transform your home with professional color consultation and flawless finishes.

Interior Painting
Exterior Painting
Cabinet Painting
Color Consultation
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Roofing

Roofing

Professional roofing repair, replacement, and installation. Protect your home with durable, weather-resistant roofing.

Roof Repair
Roof Replacement
New Installation
Emergency Services
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Deck & Patios

Deck & Patios

Custom outdoor living spaces. Transform your backyard with beautiful decks, patios, and outdoor entertainment areas.

Custom Decks
Patio Construction
Outdoor Kitchens
Fire Pits
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ADU & DADU

ADU & DADU

Accessory Dwelling Units and Detached ADUs. Maximize your property value with versatile additional living spaces.

Attached ADU
Detached DADU
Garage Conversion
Income Property
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Tiny Homes

Tiny Homes

Compact, efficient living spaces. Sustainable, beautifully designed tiny homes for modern living.

Custom Tiny Homes
Sustainable Design
Space Optimization
Turnkey Solutions
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Full Remodeling

Full Remodeling

Complete home transformations. From kitchen and bathroom remodels to whole-house renovations.

Kitchen Remodel
Bathroom Remodel
Whole-House
Basement Finishing
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20+
Years Experience
500+
Projects Completed
100%
Licensed & Insured
4.9
Client Rating

Transformations That Speak

See the Difference We Make

Real projects. Real results. Real homeowners who trusted us.

Modern Kitchen Transformation

Olympia, WA

Modern Kitchen Transformation

Complete kitchen remodel with custom cabinetry

Completed in 4 weeks+35% Home Value
Luxury Bathroom Addition

Lacey, WA

Luxury Bathroom Addition

Master suite with spa-inspired bathroom

Completed in 3 weeks100% Satisfaction
Whole-Home Renovation

Tumwater, WA

Whole-Home Renovation

Complete interior and exterior remodel

Completed in 8 weeksAward-Winning Design
New & Free

Try Our Free
Home Remodeling Tools

Plan your next renovation project with our easy-to-use interactive tool. Get instant estimates, visualize your ideas, and track your project — all from your phone or computer.

Instant project cost estimates
Visual mood boards & inspiration gallery
Save and share your project ideas
Connect directly with KOI experts
Try The App Free
KOI Tools App Preview - Home Remodeling Planning Tool
K

KOI Tools

Plan. Visualize. Build.

FREE to use!

We Come to You

Service Areas Across
South Puget Sound

Proudly serving homeowners throughout Washington's beautiful South Sound region.

Cities We Serve

Don't see your city? Contact Us — we may still serve your area!

Ready to Get Started?

Let's Bring Your Vision to Life

Contact us today for a free, no-obligation consultation. We'll answer your questions and provide a detailed estimate.

Free estimate • No obligation • Licensed & insured