Custom Tiny Home Builder
Live Simply. Live Better.
With KOI Build Co
Custom tiny homes designed for efficiency, sustainability, and modern living. Perfect for downsizing, guest houses, or rental income.
Tiny Home Builders in Olympia, Lacey, Tumwater & South Puget Sound WA
KOI Build Co builds custom tiny homes for clients in Olympia, Lacey, Tumwater and South Puget Sound, WA. We design compact, efficient living spaces that maximize function and comfort on a smaller footprint.
Our team helps you plan layouts, storage solutions, sleeping areas, kitchens and bathrooms that make the most of every square foot. We work with you to select finishes and features that fit your lifestyle, whether your tiny home will be a primary residence, guest space, rental or accessory unit.
From initial concept through construction and final details, KOI Build Co delivers tiny homes with quality craftsmanship, smart design and a streamlined build process tailored to your needs.
Why Choose Us
Olympia's Trusted Tiny Home Builder
With over 20 years of experience, KOI Build Co has become the go-to tiny home builder for homeowners across South Puget Sound. We specialize in creating efficient, sustainable, beautifully designed small spaces.
Our Work
Featured Projects
Real results from homeowners who trusted us.
Olympia, WA
Modern Studio Tiny Home
400 sq ft studio with loft sleeping area and full kitchen.
Olympia, WA
Modern Studio Tiny Home
400 sq ft studio with loft sleeping area and full kitchen.
Lacey, WA
Rustic Cabin Style
350 sq ft rustic tiny home with wood-burning stove.
Lacey, WA
Rustic Cabin Style
350 sq ft rustic tiny home with wood-burning stove.
Tumwater, WA
Two-Bedroom Tiny Home
600 sq ft tiny home with two bedrooms and office nook.
Tumwater, WA
Two-Bedroom Tiny Home
600 sq ft tiny home with two bedrooms and office nook.
Olympia, WA
Farmhouse Tiny Home
Charming farmhouse-style tiny home with porch.
Olympia, WA
Farmhouse Tiny Home
Charming farmhouse-style tiny home with porch.
Olympia, WA
Minimalist Design
Ultra-efficient 280 sq ft minimalist tiny home.
Olympia, WA
Minimalist Design
Ultra-efficient 280 sq ft minimalist tiny home.
Lacey, WA
Loft & Storage Focus
Smart storage solutions throughout this 450 sq ft design.
Lacey, WA
Loft & Storage Focus
Smart storage solutions throughout this 450 sq ft design.
Tumwater, WA
Family Tiny Home
800 sq ft tiny home designed for a family of four.
Tumwater, WA
Family Tiny Home
800 sq ft tiny home designed for a family of four.
"My tiny home is perfect! KOI understood exactly what I wanted and delivered beyond expectations."
Sarah M.
Olympia, WA • Modern Studio
How We Can Help
Comprehensive Solutions
From emergency repairs to complete replacements, we provide full-service solutions tailored to your needs.
Free Tiny Home Consultation
We'll discuss your lifestyle needs and design the perfect tiny home.
Sustainable Materials
Eco-friendly building materials and energy-efficient designs.
Licensed & Insured
Fully licensed contractors with comprehensive insurance coverage.
Custom Designs
Every tiny home is uniquely designed for your specific needs.
Get In Touch
Let Our Experts Answer Your Questions
Schedule your free consultation today. Our team is ready to help.
Ready to Simplify Your Life?
Let's Build Your Tiny Home
Contact us today for a free, no-obligation consultation.
Free estimate • No obligation • Licensed & insured