Detached ADU

An ADU (accessory dwelling unit) is a secondary dwelling on a single-family lot. Types include basement apartments, garage conversions & detached cottages. Costs vary by size, design, permits & materials. Professional ADU contractors ensure smooth project execution.

True Measure Construction, a Westborough, MA general contractor, specializes in full-service ADU construction—covering permits, site prep, and finishing—plus kitchen and bathroom remodeling for a complete home improvement solution.

OT Bay Builders is a complete remodeling company with over 40 years of combined experience amongst our team. We’re expert Bay Area ADU builders in San Jose with a customer-first mindset. As a full-service ADU builder, you can trust us to remain by your side from the first consultation to the final walkthrough.

Icon Construction & Design is a Fresno & Clovis, CA ADU builder with 20+ years of experience. They specialize in detached ADUs, garage conversions, and attached ADUs, offering modern design, code compliance, and full project management.

Studio MAYO offers Louisville Metro pre-approved ADU plans, streamlining permitting. Customizable detached ADUs, backyard cottages & granny flats available as free downloads, plus custom design, site plans & construction support services.

Virginia ADU construction by Commonwealth Contractors. Expert guidance on zoning, permits & building codes. Options include detached ADUs, garage conversions & basement units. Costs range $150–$300/sq ft. Boost property value & rental income.

Licensed ADU contractor Iron Crest Remodel serves Nampa, Idaho, building detached cottages, garage conversions, and in-law suites. Costs range from $70K–$270K+, with rental income potential of $950–$1,500/month. Full permits, design, and warranties included.

Foothill Renovators offers home remodeling, ADU construction, new builds, and additions. Services include flooring, roofing, electrical, plumbing, and more. They handle permits and full project management for detached ADUs, granny flats, and garage conversions.

Backyard Homes is a top ADU builder in Sacramento with 80+ completed units. They offer detached, attached, and conversion ADUs, handling design, permitting, and construction for a seamless experience across the greater Sacramento region.

ADU4U is a veteran-owned ADU builder in Denver offering full-service accessory dwelling unit construction, planning, real estate, and financing. Build a granny flat, in-law suite, or detached ADU for rental income or multigenerational living.

Parsa Construction offers residential & commercial remodeling, ADU construction, and retrofit services. Specializing in kitchen, bathroom, room additions, and accessory dwelling units like granny flats and detached ADUs, they manage permits, design, and build.

At Builders FirstSource, we're passionate about making homebuilding projects become a reality. Our Albuquerque casita building plans reflect this commitment by streamlining the building process to get your ADU built quickly, affordably, and with quality. Whether you're a professional builder or homeowner, BFS is your trusted partner for Albuquerque casitas.

Meetinghouse Builders offers custom ADU design & construction in Hollis, NH. Services include detached builds, garage conversions, basement ADUs & home additions. Features 3D renderings, style guides & full construction documents.

Avio Homes is a Seattle-based ADU contractor specializing in detached ADUs, backyard cottages, and in-law suites. Serving Seattle, Tacoma, and Olympia, they handle design, permitting, and construction with local zoning expertise.