Locals just call it the Village. If you have wandered the bookshops on Harris Avenue or grabbed a pastry near the old Fairhaven district, you know it has a character all its own. The deep historic lots here, many laid out in the 1890s and early 1900s, often came with detached garages and old carriage spaces tucked at the back. Those structures convert into backyard studios and cottages better than almost anything else in town, because the footprint is already there.
The catch in Fairhaven is the sites themselves. Lots run tight and many slope down toward the bay, so access for materials and a foundation crew takes real planning, and setbacks on a narrow lot decide what a cottage can actually be. We start with a free feasibility check that maps your lot, the setbacks, and the access before any design, so you know what fits. Then we build to current energy code, which matters on these older properties where a converted garage has to be insulated and sealed to survive the marine air rolling up from the waterfront.
ADU costs in Fairhaven depend on the type. A ground-up detached backyard cottage runs $250,000 to $400,000 or more, a garage conversion runs $80,000 to $150,000, and a basement apartment conversion runs $90,000 to $180,000. The drivers are size, finish level, site access, and how far we run utilities to the unit. We give you a line-item number after a free site visit, so you know exactly what your project costs before you commit.
Do you build ADUs in Fairhaven?
Yes. Fairhaven is one of our core service areas, and we build backyard cottages, garage conversions, in-law suites, and basement apartments here. We start every project with a free feasibility check against your lot size, setbacks, and the City of Bellingham rules, so you know what your lot allows before you spend anything on design.
Who handles the permit for an ADU in Fairhaven?
We do, start to finish. Fairhaven is inside Bellingham city limits, so your ADU runs through the City, including its historic-district considerations on some blocks. We handle the permit and the review. We assemble the full permit package, manage the review including answering reviewer comments, and carry it through to an approved permit, then handle the inspections during the build.
Ready for a free Fairhaven feasibility check?
Tell us about your lot and your goal. We'll reply within 15 minutes during business hours.