ADU Contractors

Colibri Kitchen & Bath offers full-service ADU construction in Oakland, handling design, permitting, and building. Services include site assessment, architectural plans, 3D renderings, and complete construction from foundation to finishing.read more

ADUs are now legal statewide in Massachusetts. Atlantic Property Development builds custom Accessory Dwelling Units on the North Shore, offering design, permitting, and construction services for detached, attached, and garage conversion ADUs.

Experience a personalized approach to ADU construction with GO ADU. From initial design concepts to permits, construction, and financing, we offer a seamless, all-in-one solution customized to your needs. With owner involvement at every stage, you... read more

Wise Builders is a Bay Area ADU contractor with 20+ years of experience in accessory dwelling units, garage conversions, and attached or detached ADU construction across San Jose, Sunnyvale, and Silicon Valley. Free estimates available.

HBC Construction, based in Fremont, CA, specializes in ADU building, garage conversions, new homes & additions across the Bay Area. Licensed, code-compliant, full-service from planning to completion.

Castle Building & Remodeling offers full-service ADU construction, handling demolition, utilities, framing, and interior finishing. Specializing in detached ADUs and granny flats, they deliver compact, functional, move-in-ready backyard homes.... read more

Guiding Builders specializes in ADU construction, offering design, permitting, and building services. Projects include detached ADUs, garage conversions, in-law suites, granny flats, and casitas—custom-built to add value and living space.

Spectrum Builds offers customizable ADUs for rental income, in-law suites, guest houses, and home offices. Their Summit Series prefab ADU adapts to evolving needs. Use their 3D Design Center to plan and price your accessory dwelling unit today.read more

208 Tiny Homes is a Boise, Idaho-based ADU builder serving the Treasure Valley. Founded in 2023, they handle design, permitting, and construction of accessory dwelling units, granny flats, and in-law suites with premium finishes and expert project... read more

Econstruct Inc is a Los Angeles ADU contractor offering full-service construction of accessory dwelling units. With 40+ pre-approved designs and 3D/AR tools via Ohana Dwellings, costs range from $200K–$450K+.

Xtreme ADU LLC, based in Lake Benton, MN, builds prefabricated ADUs, tiny homes & casitas. Customizable flat-pack kits, Net-Zero options, 71+ years experience. Serving MN, SD, ND, IA & CA.

AKD Homes is a SF Bay Area ADU contractor with 20+ years of experience. They offer full-service ADU design, permits, and construction, including detached ADUs, granny flats, and custom builds ranging from 400–750 sq. ft.

TDK Construction is a licensed ADU contractor in Lodi, CA, with 10+ years of experience. They offer full design-and-build services for detached ADUs, garage conversions, JADUs, and granny flats, ensuring compliance with California ADU regulations.... read more

Jones Urban Development Co, a division of Populace Homes of Memphis, specializes in ADUs, backyard cottages & small homes in Memphis & Shelby County. With 30+ years experience, they pioneer energy-efficient construction innovations.