Our Service

Custom ADU Design & Construction

Expand your living space and long-term value with a thoughtfully designed ADU. Call (425) 582-1983 to explore your options today.

Craft & Forge Homes specializes in high-quality Accessory Dwelling Unit (ADU) design and construction. Whether you're building for extended family, rental income, or flexible living, we create ADUs that feel intentional, refined, and built to last.

Why Build

Is an ADU the Right Investment for Your Property?

Accessory Dwelling Units offer one of the most flexible and future-proof ways to expand your home’s functionality without relocating.

Homeowners often choose to build an ADU for the following reasons:

Multi-generational living

ADUs provide private, comfortable living spaces for aging parents, adult children, or long-term guests while keeping everyone close.

Rental income potential

A well-designed ADU can generate consistent rental income and significantly increase your property’s overall value.

Flexible future use

ADUs can serve as guest houses, home offices, studios, or future downsizing options as your needs evolve.

If you’re looking to add usable space while maximizing long-term value, an ADU can be one of the smartest investments you make.

Our Process

End-to-End ADU Design & Build Services

We manage every phase of the ADU process—from feasibility and design through construction and final finishes—so you can move forward with clarity and confidence.

Feasibility & Planning

We evaluate zoning, lot constraints, utility access, and project goals to determine the most effective ADU solution for your property.

Custom Architectural Design

Our designs balance efficiency, aesthetics, and livability—ensuring your ADU feels cohesive with the main home while standing on its own.

Detached & Attached ADUs

Whether you’re building a detached backyard unit, converting a garage, or adding an attached living space, we tailor the approach to your property.

High-Quality Interior Finishes

We deliver the same craftsmanship in ADUs as in primary residences, including custom cabinetry, durable flooring, modern kitchens, and refined bathrooms.

Energy-Efficient Construction

Our ADUs are built with efficient insulation, modern mechanical systems, and durable materials designed for long-term performance.

3D Visualization & Pre-Construction Clarity

Detailed renderings allow you to fully understand layout, flow, and finishes before construction begins—reducing uncertainty and surprises.

The Craft & Forge Homes Difference

Hear from Patrick on how we built his perfect Patio.

Our Promise

An ADU Builder You Can Trust

Building an ADU is a significant investment. We believe the experience should feel just as solid as the final structure.

  • Clear scopes and transparent pricing from day one
  • Lifetime craftsmanship warranty
  • Skilled, respectful construction teams
  • Proactive communication throughout the project

Craft & Forge Homes is licensed, insured, and committed to delivering ADUs that perform beautifully for decades—not just at move-in.

Contact Us

Build an ADU Designed for the Way You Live

A well-designed ADU adds flexibility, independence, and long-term value to your property. At Craft & Forge Homes, we approach ADU construction with the same care, intention, and craftsmanship as every home we build.

Call Craft & Forge Homes at (425) 582-1983 to schedule your ADU consultation and start planning your project.

Facts and figures

What should I expect?

With home construction in the Seattle area, pricing can be confusing.
We have a solution. Our cost guide gives you exact details for how much your project could cost based on industry standards.

What’s included in this cost guide:

  • Average cost of a kitchen remodel
  • Average cost of a bathroom remodel
  • Average cost of a home addition
  • Average cost of an accessory dwelling unit (ADU) 
  • Costly mistakes to avoid when remodeling
  • Why choose design-build?

Download our cost guide

Enter your email and learn how much your project could cost.

Our impact

Homes built to last

We don’t just build homes, we build futures. Hear from our past clients on how Craft & Forge helped bring their dream home into reality.

Common Questions

Frequently Asked Questions

Here are answers to the most common questions we receive from homeowners considering ADU construction projects.

Do I Need Special Permits for an ADU?

Yes, ADUs require building permits and must comply with local zoning regulations, setback requirements, and building codes.

Most jurisdictions allow ADU rentals, though some areas have restrictions on short-term rentals or require owner occupancy of the main residence.

Most ADU projects take four to eight months from design to completion, depending on size, complexity, and permit processing times.

Absolutely. Whether you bring your own plans or want help from the ground up, we offer full-service design to match your goals.