Detached ADU

Cronen Building Co. is an expert ADU builder specializing in granny flats, garage conversions, backyard cottages, and detached ADUs. They deliver custom accessory dwelling units that boost property value and functionality.

Mass Tiny Homes helps you build the perfect ADU for your needs, whether it be for aging parents or rental income, with an easy, streamlined process from start to finish.

Landform Build is a Portland, Maine design-build firm specializing in infill development, ADUs, and residential projects. Services include zoning analysis, architectural design, feasibility studies, permitting support, and general contracting for accessory dwelling units and multi-family housing.

Veteran-owned US ADU & tiny home builder serving San Diego & LA County. Premium materials, ANSI A119.5-compliant builds, Class A fire ratings, 3D design, site assessment, permitting support & NOAH/RVIA certification included.

Caine and Company is a Scottsdale-based design-build firm specializing in custom Casitas, guest houses, ADUs, and pool houses. Founded 22 years ago, they offer fixed-price contracts, in-house design, and full construction management across Phoenix, Scottsdale, and Paradise Valley.

KGA Construction Inc offers turnkey ADU construction in Sacramento, including garage conversions, detached ADUs, and backyard cottages. Services cover design, permits, and build management for accessory dwelling units that add lasting property value.

Accessory Dwelling Units (ADUs) add value and flexibility to California properties. Learn about ADU regulations, design options like garage conversions, and how Hubbell & Hubbell Architects can help you build a compliant granny flat or guest house.

Diditan Group is a Los Angeles ADU contractor offering garage conversions, granny flats, JADUs & detached ADUs. They manage design, permitting & construction, helping homeowners add value & livable space.

River North Basement Company is a Denver ADU contractor offering construction and remodeling services for accessory dwelling units, including rental units, in-law suites, and guest spaces, ensuring code compliance throughout.

Sub Zero Construction, based in Moorhead, MN, offers residential remodeling services across Minnesota and North Dakota. With 30+ years of experience, they specialize in kitchens, bathrooms, flooring, tile, drywall, and custom carpentry. Licensed, insured, and free estimates available.

Alto Builders specializes in ADU construction in Los Angeles & Ventura County. Services include detached ADUs, garage conversions & JADUs. Costs range $300–$600/sq ft, with timelines of 5–12 months.

House Improvement LLC builds fully insulated ADUs with electricity and climate control, ideal for home offices or studios. They also construct storage sheds, carports, gazebos, and pergolas for diverse residential outdoor needs.

Harka offers ADU design, consulting, and permitting services with 18+ years of experience. Services include feasibility reports from $785, zoning review, schematic design, construction documents, and energy modeling to reduce costs and carbon footprint.

Central Coast ADU offers full ADU planning, design, and permitting services for homeowners on the Central Coast. From granny flats to garage conversions, they deliver construction-ready plans and approved permits.

Miami-Dade ADU helps South Florida homeowners plan and build accessory dwelling units (ADUs). Led by licensed architect Dan Villa, they offer pre-designed, hurricane-resistant ADU plans from 400–800 sq ft, ideal for rentals, in-law suites, or extra living space.