Attached ADU

Vertebrae is an LA-based, woman-owned architecture studio founded in 2012, specializing in ADU design and small-space living. Award-winning projects include the 2025 Architizer A+ Award and 2023 AIA LA Honor Award winners.

Milanco Building Group (MBG) is a certified general contracting company that offers extremely competitive prices while working under all the proper licenses and insurances.

We are a full turn-key company that performs projects in the commercial, residential, industrial markets and more. We have a management team that has 30+ years of experience to ensure a smooth project, such as full communication with the client, timely scheduling, great customer service and attention to details.

James River Tiny Homes is a Richmond, VA general contractor specializing in custom ADUs, tiny homes, garage conversions, carriage houses, and home additions. Serving Richmond, Henrico, Chesterfield, and surrounding areas.

CCS Inc (CSLB #B1047699) is a licensed LA general contractor since 1984 specializing in ADU construction, garage conversions, and room additions. They manage design, permitting, and build, with ADUs generating up to $3,500/month rental income.

ENE Smarthome, Inc. is a Bay Area contractor offering home remodeling, ADU construction, smart home upgrades, and accessibility improvements. Services include garage conversions, granny flats, aging-in-place remodels, and SB9-compliant ADU projects.

WD-4D Builders specializes in ADU construction and garage conversions across California. Services include detached ADUs, granny flats, casitas, and garage-to-living-space conversions, covering design, permitting, and build from start to finish.

Diamond Wright Construction is a licensed Denver remodeling contractor with 500+ projects completed. They specialize in ADU construction, kitchen & bathroom remodeling, basement finishing, home additions, and full renovations across the Denver Metro area.

Island Contractors OBX designs and builds ADUs across Dare, Currituck, and Camden Counties, NC. Certified ADU specialists offering full-service construction, from feasibility and permitting to finished builds tailored to coastal conditions.

West Coast ADU is a California-based ADU builder offering prefab & manufactured accessory dwelling units. They help homeowners add rental income, house family members & boost property value with streamlined permitting & construction.

Cahla Construction Group is a licensed ADU contractor in Los Angeles offering ADU construction, garage conversions, kitchen & bathroom remodeling, home additions, and general contracting for residential and commercial clients.

Step-up Construction is a San Jose ADU contractor specializing in garage conversions, attached additions, and detached backyard ADUs. Costs range from $80K to $475K. They guide homeowners through permits, zoning, and San Jose's ADU regulations.

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.

OnePhase Inc is a San Diego ADU contractor offering end-to-end construction services. Specializing in garage conversions, detached ADUs, JADUs, and granny flats, they navigate permitting, fee exemptions, and the ADU Bonus Program to maximize project feasibility.