ADU Construction

 Whatcom County, WA Area

10-Year Craftsmanship Warranty

24-Hour Water Damage Service

Quality Materials Used on All Projects

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Build Quality ADUs That Add Value to Your Property

Looking to add living space to your property? We build accessory dwelling units that give you more room and boost your home's value. From the first design meeting to final inspection, we manage every detail of your ADU project.


Our team handles permits, coordinates with insurance when needed, and delivers solid construction built to last. With over 20 years of construction experience, we know how to bring your ADU plans to life. Reach out to us today to discuss your project.


The Benefits of Adding an ADU to Your Property

An accessory dwelling unit gives you options for your home and family. You might need space for aging parents, a reliable source of rental income, or a quiet home office. An ADU delivers exactly that. Here's why property owners are building ADUs:

  • Generate steady rental income
  • Increase property value significantly
  • Provide independent living space for family
  • Create a private home office or studio
  • House guests without losing main home privacy


These practical structures adapt to your changing needs while fitting naturally with your existing property.


Why Choose Sherman General Contracting

When you're investing in ADU construction, you need a contractor who cares about your project. We're a locally owned, family-run business serving Whatcom, Skagit, Snohomish, and San Juan counties since 2023. Our commitment to solid work shows in every build:

  • Over 20 years of construction experience
  • 10-year craftsmanship warranty on all work
  • Reliable materials and careful workmanship
  • Full liability insurance coverage
  • Complete permit handling from start to finish
  • Strong community commitment as local residents


We build things right the first time with solid materials and careful attention to detail. Every ADU we construct reflects our dedication to work that lasts.


Contact Us

Ready to explore adding an ADU to your property? We'll work closely with you to design and build a living space that fits your needs and budget. Our team handles everything from initial planning through final inspection, making the construction process straightforward. Let's discuss how an accessory dwelling unit can boost your property's value and give you more options.


Contact Sherman General Contracting today for a consultation on your ADU construction project.

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Protected by Our 10-Year Craftsmanship Warranty

We stand behind every project we complete. Our decade-long warranty ensures your investment is protected and our workmanship meets the highest standards across Whatcom, Skagit, Snohomish, and San Juan counties.

Ready to build with confidence?

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