Our Service

ADUs in Mill Creek, WA

Thinking about building an ADU in Mill Creek? Call (425) 582-1983 to explore your options with a trusted local builder.

Craft & Forge Homes designs and builds high-quality accessory dwelling units (ADUs) for homeowners in Mill Creek, Washington. From detached backyard cottages to garage conversions and in-law suites, we create ADUs that add value, flexibility, and long-term livability to your property.

Why Build an ADU

Is an ADU Right for Your Mill Creek Property?

Accessory dwelling units are one of the most versatile and future-proof investments a homeowner can make. When thoughtfully designed and properly permitted, an ADU can transform how you use your property.

Many Mill Creek homeowners consider building an ADU for the following reasons:

Multigenerational living

ADUs provide a private, comfortable living space for aging parents, adult children, or extended family while keeping everyone close.

Rental income potential

A well-designed ADU can generate long-term rental income or serve as a short-term rental, helping offset your mortgage or increase property cash flow.

Need for flexible space

Home offices, guest suites, or future downsizing options are all possible with a professionally built accessory dwelling unit.

If you’re exploring ADUs in Mill Creek, our team can help you evaluate feasibility, zoning requirements, and the best approach for your property.

Our Process

Custom ADU Design & Construction in Mill Creek

We manage every phase of your ADU project—from feasibility and design through permitting and construction—so you can move forward with confidence.

Detached ADUs

Standalone backyard cottages designed for privacy, comfort, and long-term durability. Ideal for rentals, guests, or independent living.

Garage Conversions

Transform an existing garage into a fully functional living space while maintaining architectural cohesion with your primary residence.

Attached ADUs & Additions

Integrated ADUs that connect seamlessly to your home, offering efficiency while preserving privacy and code compliance.

Zoning & Permitting Guidance

We navigate Mill Creek zoning codes, setbacks, utility requirements, and permitting processes to keep your project moving smoothly.

Custom Interiors & Finishes

High-end kitchens, bathrooms, storage solutions, and finishes ensure your ADU feels like a complete home—not an afterthought.

3D Design & Planning

Our detailed 3D renderings help you visualize layouts, materials, and exterior integration before construction begins.

The Craft & Forge Homes Difference

Hear from Patrick on how we built his perfect Patio.

Our Promise

Why Homeowners Trust Us for ADUs in Mill Creek

Building an ADU is a major investment. Craft & Forge Homes is trusted by Washington homeowners for our disciplined process and commitment to quality.

  • Clear, upfront pricing with defined scopes
  • Lifetime craftsmanship warranty
  • Experienced crews and project managers
  • Consistent communication from start to finish

We are fully licensed, insured, and deeply familiar with local building requirements. Our goal is to deliver ADUs that stand the test of time—structurally, functionally, and aesthetically.

Contact Us

Start Planning Your Mill Creek ADU

Whether you’re planning for family, rental income, or future flexibility, an ADU can unlock the full potential of your property. Craft & Forge Homes designs and builds ADUs that feel intentional, livable, and built to last.

Call Craft & Forge Homes at (425) 582-1983 to schedule your ADU consultation in Mill Creek, WA.

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.