Washington State has access to some of the leading designers and manufacturers of prefab and modular homes in the United States. The combination of several builders with headquarters in Washington State and others in the Pacific Northwest with the proximity to other leading prefab and modular home companies in California offers individuals access to a wide range of options for a potential prefab home project - whether that be a modular home, kit home, manufactured home, or even tiny home in Washington State.

Together with high labor and building costs in Washington State, particularly in bigger cities like Seattle, Spokane, and Tacoma, the wide range of prefab home options in Washington State make a project like a modular home, kit home, manufactured home, or tiny home an appealing and cost-competitive option in Washington.

Below, our list of modular homes and prefab homes companies in Washington State highlights companies both in Washington and in neighboring states that serve the entirety of the state with different forms of prefab houses.

As prefab refers to a wide range of construction methods, our list is broken down into modular home companies in Washington State, kit home companies in Washington State, manufactured homes companies in Washington State, and tiny homes companies in Washington State.

Map of Prefab Home Builders in Washington State- Includes a breakdown of leading modular home builders in Washington, Kit Home Builders in Washington, Manufactured Home Builders in Washington, and Tiny Home Builders in Washington

Prefab Home Companies in Washington State

Including Companies That Offer Kit Homes in Washington State, Manufactured Homes in Washington State, Modular Homes in Washington State, Shipping Container Homes in Washington State, and Tiny Homes For Sale in Washington State

Modular Homes in Washington State

Method Homes - Modular Homes Washington State.jpeg — Method Homes - Modular Homes Washington State

Method Homes (Seattle, Washington)

Design and manufacture over 30 pre-designed homes that feature modern designs and green building features. They also work on fully custom projects and can build homes to achieve net-zero energy efficiency.
All-in Cost Estimate: $325 - $425+ per sqft (List of Method Homes floor plans with pricing information)

Hybrid Architecture - Modular Homes Washington State

Hybrid (Seattle, Washington)

Offer 3 models of pre-designed townhomes, though their primary focus is on custom modular homes, most of which include luxury features and modern designs. For projects in the Seattle area, Hybrid can act as the general contractor and project manager.
All-in Cost Estimate: $300 - $640 per sqft (List of Hybrid floor plans with pricing information)

TLC Modular Homes - Modular Homes Washington State

TLC Modular Homes (Goldendale, Washington)

Specialize in building affordable modular homes which often feature traditional designs like ranches, capes, and lofted homes. TLC Modular can assist with the management of the build process, though a local contractor must complete site preparations.
All-in Cost Estimate: $130 - $200 per sqft

Plant Prefab - Modular Homes Washington State

Plant Prefab (Rialto, California)

A home manufacturer based in Southern California, they work with notable architects to build energy-efficient modular homes.
All-in Cost Estimate: $300 - $500 per sqft

Kit Homes in Washington State

(Kit Homes in Washington State, Prefab Home Kits, Modular Home Kits)

FabCab (Seattle, Washington)

Designer and manufacturer of modern, timber-based panelized homes. Floor plans range in size from smaller, 550 square foot ADUs to 1,400+ square feet homes.
All-in Cost Estimate: $230 - $350 per sqft (List of FabCab floor plans with pricing information)

Barn Pros (Monroe, Washington)

Barn Pros specializes in the design and engineering of barn & barn home kits. Specifically, they provide buyers with the materials to build the structural shell of a barn house or one of their stable or workshop models.
All-in Cost Estimate: $169 - $740+ per sqft (List of Barn Pro’s Home Kits with cost information)

Stillwater Dwellings - Kit Homes Washington State

Stillwater Dwellings (Seattle, Washington)

Designer and manufacturer of modern, luxury prefab homes. They also have an in-house architecture department that allows buyers to modify one of their 25+ existing designs.
All-in Cost Estimate: $500 (List of Stillwater Dwellings floor plans with pricing information)

Zipkit Homes - Kit Homes Washington State

Zip Kit Homes (Pocatello, Idaho)

Design modern prefab homes, which are made up of energy-efficient structural insulated panels (SIPs). Offer a series of small footprint homes and multi-unit models.
All-in Cost Estimate: $ (List of Zip Kit Homes floor plans with pricing information)

Precision Craft - Kit Homes Washington State

Precision Craft Log & Timber Homes (Meridian, Idaho)

Design and manufacture both pre-designed and custom home kits. They specialize in a variety of construction styles including timber frames, log homes, and SIPs.They can also build homes to meet LEED certification standards.
All-in Cost Estimate: $300 - $500 per sqft (List of Precision Craft Log & Timber Homes floor plans with pricing information)

Manufactured Homes in Washington State

Ideabox - Manufactured Homes Washington State

Ideabox (Salem, Oregon)

ideabox is a design firm that specializes in the design and construction of modern modular homes. They currently build 19 models of homes with sizes ranging from ADU & studio-sized modules up to multiple-bedroom single-family residences. Their modules arrive on-site and can either be rolled or craned into place.
All-in Cost Estimate: $331 - $596+ per sqft (List of Ideabox floor plans with pricing information)

Alternative Construction Homes in Washington

(Tiny Homes in Washington State & Container Homes in Washington State)

Wolf Industries - Tiny Home Washington State

Wolf Industries (Battleground, Washington)

Offer turn-key services for their series of 4 pre-designed tiny homes. While they do not offer floor plan customization, buyers can personalize select design elements.
All-in Cost Estimate: $150 - $250 per sqft (List of Wolf Industries’ tiny homes with pricing information)

TruForm Tiny - Tiny Homes Washington State

TruForm Tiny (Eugene, Oregon)

Manufacture over 24 models of tiny homes on wheels which often feature modern designs and energy efficient construction elements. From a design perspective, buyers can choose from one of three design finishes - urban, cottage, or country.
All-in Cost Estimate: $360 - $500 per sqft

Dweller (Portland, Oregon)

Offer 6 styles of ADUs with floor plans ranging from 392 to 660 square feet. While Dweller outsources the manufacturing of their ADUs, they offer turn-key construction services for their projects.
All-in Cost Estimate: $214 - $408 per sqft (List of Dweller’s ADU floor plans with pricing information)

Tiny Mountain Houses - Tiny Homes Washington State

Tiny Mountain Houses (Portland, Oregon)

Offer 18 styles of fully-mobile tiny homes on wheels with options for complete customization. Most models are delivered fully-furnished and include fixtures and appliances & buyers can even opt for off-grid enabling upgrades.
All-in Cost Estimate: $164 - $272 per sqft (List of Tiny Mountain Houses’ floor plans with pricing information)