Attached ADU near Hawthorne, CA

J&I Construction is a trusted ADU contractor offering full-scope accessory dwelling unit services, including detached ADUs, garage conversions, granny flats, in-law suites, JADUs, and backyard cottages. Free consultations available.

Structura Remodeling is an LA-based licensed ADU contractor specializing in Accessory Dwelling Units, garage conversions & JADUs. Costs range $115K–$145K. Financing options include HELOC & construction loans. Free consultation available.

A1 Home Builder (CA License #885624) is a Lancaster-based ADU contractor and residential builder serving the Antelope Valley since 2006, specializing in garage conversions, detached ADUs, and new single-family home construction.

An Accessory Dwelling Unit (ADU) adds value, rental income, and flexibility to your property. LA Developing Inc. specializes in ADU construction in Los Angeles, offering garage conversions, detached builds, and attached additions with full project support.

UNI Construction builds detached and attached ADUs, handling site planning, structural engineering, and permit-ready drawings. Options include backyard cottages, granny flats, and in-law suites, all code-compliant and tailored to your property.

Revival Homes is a California ADU project manager handling planning, financing, design, permitting, and construction. They build detached ADUs, garage conversions, JADUs, and more, with costs ranging from $100K to $300K.

Silver Hammer Builders is a licensed ADU contractor in Los Angeles with 15+ years of experience. Services include garage conversions, detached ADUs, JADUs & in-law suites. Full project management, permits, and free consultations offered.

Thousand Oaks ADU Builders offers expert ADU design, permitting, garage conversions, and detached or attached ADU construction. Serving Thousand Oaks, CA, they handle floor plans, city approvals, and code-compliant builds up to 1,000 sq ft.

ADU Hotline offers affordable ADU design and permitting in Southern California. From granny flats to garage conversions, they handle the full process in 3–4 weeks, helping homeowners add rental income or family housing efficiently.

EcoSmart Builders is a licensed Southern California ADU contractor specializing in accessory dwelling units, home expansions, and fire rebuilds. Serving Los Angeles County, they manage design, permitting, and construction of detached, attached, garage conversion, and junior ADUs.

Michael Matthews Studio is an architecture firm in Los Angeles specializing in custom homes, ADUs, SB9 units, high-end renovations, and modern design. We believe architecture is a catalyst of change for individuals, communities, and the planet.

ADU Builders is a licensed Los Angeles ADU contractor with 15 years of experience. They offer detached, attached, garage conversion, and JADU construction, managing permits, design, and inspections per California ADU building codes.

USA Builders Pro offers 20+ years of ADU construction and home addition services. Specializing in detached & attached ADUs, room additions, permits, and zoning compliance, they help homeowners boost property value and living space.