Providing High Quality Accessory Dwelling Units for Whatcom & Skagit County

Are you ready to add an income producing asset to your property? Bellingham ADU delivers the ultimate prefab Tiny Home ADU experience! We take pride in transforming your vision into reality, seamlessly guiding you "From thought to finish."

How It Works

  • Step 1

    Fill out the initial inquiry form. We'll begin assessing your property to confirm its suitability in terms of location, zoning, and accessibility.

  • Step 2

    We'll reach out to you and arrange a site visit to explore your preferred model and pinpoint the ideal spot for your tiny home.

  • Step 3

    After selecting a model and discussing estimated costs, a non-refundable fee will be collected as you proceed to the permitting process.

  • Step 4

    Sign the builder contract, and we'll provide you with a completion date for your project.

Learn More

Accessory Dwelling Units

Located Locally in Whatcom County 

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What are the Rules for an ADU?

Starting July 1, 2025, new state and local rules make it easier than ever for Bellingham homeowners to build an accessory dwelling unit (ADU) or backyard cottage. You’ll be able to add up to two ADUs per lot, with larger size limits, streamlined permits, and—after a short transition—no owner-occupancy requirement. Off-street parking isn’t required for ADUs near frequent transit, and options like garage or basement conversions are now easier. Bellingham’s new rules create more housing choices for families, renters, and homeowners alike—while maintaining important protections for neighborhoods and the environment.

Ready to maximize your property’s potential?

Are you curious about our ADU solutions? Share your details, and our team will respond promptly. If you prefer, you can also call us at (360) 524-4073. Or you can email us at sales@bellinghamadu.com. We look forward to connecting with you!