A1 ADU Contractor

13701 Riverside Drive #200, Sherman Oaks, CA 91423 10 miles

A1 ADU Contractor specializes in garage conversions and custom ADU construction throughout Los Angeles and the San Fernando Valley. With over 15 years of experience, our team provides complete design, permitting, and construction services to transform underutilized spaces into beautiful, functional living areas. Whether you're creating a rental unit, guest house, home office, or multi-family dwelling, we deliver high-quality craftsmanship and personalized solutions tailored to your needs.

America Green Builders

6601 Alcove Avenue, North Hollywood, CA 91606 11.4 miles

20 years in business

America Green Builders (AGB) is a Los Angeles general contractor with 20+ years of experience offering kitchen remodeling, bathroom renovation, room additions, ADU garage conversions, custom homes, pool construction, and hardwood flooring.

ADU Hotline

5301 Laurel Canyon Blvd, Los Angeles, CA 91607 11.5 miles

7 years in business

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.

Long Beach Elite ADU Solutions

245 East 3rd Street, Long Beach, CA 90802 24.5 miles

Licensed 15 years in business

Long Beach Elite ADU Solutions specializes in ADU construction and garage conversions in Long Beach, CA. Services include detached ADUs, JADUs, basement and above-garage units. 15+ years experience, 150+ completed projects.

Esco Builders Inc

Downey, CA 90242 20.7 miles

AD Remodeling & Construction

7040 Darnoch Way, West Hills, CA 91307 15.5 miles

AD Remodeling & Construction offers room additions and ADU services, including design, permitting, and construction. They build detached ADUs, in-law suites, granny flats, and room additions tailored to client needs and local regulations.

Aligcus

1841 South San Gabriel Boulevard, San Gabriel, CA 91776 22.9 miles

Aligcus is an experienced ADU contractor specializing in detached ADUs, garage conversions, JADUs, granny flats, in-law suites, and backyard cottages. They guide homeowners through permitting and construction for all accessory dwelling unit projects.

New Birth Builders

11500 West Olympic Boulevard, Los Angeles, CA 90064 2.3 miles

New Birth Builders believes that a room addition or Garage Conversion is a great way to increase your home’s value and this new space can be used in a variety of ways. For most homeowners adding a room is less cost efficient and stressful than having to sell their home and move to a bigger home.

ADUscale

528 West Hampshire Avenue, Anaheim, CA 92805 35.6 miles

ADUscale is an independent ADU advisory service offering feasibility assessments, contractor verification, escrow-based payment protection, and construction oversight. Fixed-fee, conflict-free guidance for homeowners planning detached ADUs, garage conversions, or backyard cottages.

CCS Inc.

5535 Balboa Boulevard, Encino, CA 91316 9.5 miles

Licensed

CCS Inc. offers ADU construction, garage conversions, remodeling & permit services in Long Beach, CA. Costs range from $100K–$400K+, with timelines of 4–14 months. Free consultations available for eligible residential properties.

IA Builders

10736 Jefferson Blvd, Unit 703, Culver City, CA 90230 5.3 miles

IA Builders is a Los Angeles construction company offering new home builds, remodeling, additions, and ADU construction. Services include garage conversions, detached ADUs, and in-law suites, delivered with quality craftsmanship and transparent pricing.

Saunders Construction Renovation Inc

2463 W Carson Street, Torrance, CA 91310 16.3 miles

Saunders Construction Renovation Inc offers ADU construction in Torrance, Redondo Beach & Palos Verdes Peninsula. Services include detached ADUs, garage conversions & granny flats. BBB A+ rated South Bay contractor.

CarbonShack Design

715 Cypress Avenue, Los Angeles, CA 90065 15.4 miles

Eco-Friendly

CarbonShack Design offers expert ADU design services in Los Angeles, specializing in accessory dwelling units, detached ADUs, granny flats & in-law suites. Carbon-conscious building practices & design-first approach set them apart.

i Arch Studios

127 South Brand Boulevard, Glendale, CA 91204 15.4 miles

i Arch Studios specializes in building ADUs above existing garages, handling structural assessment, permits, zoning compliance, utility installation, and interior finishes to deliver functional, code-compliant living spaces that add property value.

Calcons

7838 Truxton Avenue, Los Angeles, CA 90045 6.3 miles

Calcons is a California-based ADU contractor specializing in detached ADUs, garage conversions, JADUs, granny flats, and backyard cottages. They manage permits, design, and construction for homeowners seeking to add livable space.

Other cities in California

What you need to know

Building ADUs in Santa Monica: Navigating Coastal Zone Regulations

Santa Monica, California is one of the most desirable coastal cities in Los Angeles County, and it comes with a unique set of challenges for ADU contractors in Santa Monica. A significant portion of the city falls within the California Coastal Zone, which means that ADU projects may require a Coastal Development Permit (CDP) in addition to standard building permits. Experienced ADU contractors familiar with Santa Monica's specific requirements are essential for homeowners looking to add accessory dwelling units to their properties.

Santa Monica ADU Regulations and Zoning Requirements

The City of Santa Monica has adopted local ADU ordinances that align with California state law while incorporating city-specific standards. Santa Monica ADU contractors must be well-versed in the following key regulations:

Why Hiring a Local Santa Monica ADU Contractor Matters

Working with a licensed ADU contractor in Santa Monica who understands local building codes, the Santa Monica Department of Planning and Community Development, and the nuances of coastal construction is critical. Santa Monica enforces strict design standards to preserve neighborhood character and protect environmental resources. Local contractors are familiar with the city's requirements for energy efficiency, which must comply with California's Title 24 standards, as well as any additional green building requirements the city may impose.

Costs and Timeline for ADU Construction in Santa Monica

Due to the high cost of living and construction in the Los Angeles area, ADU construction costs in Santa Monica tend to be higher than the state average. Homeowners should expect to budget between $300 and $500 per square foot or more, depending on the complexity of the project, site conditions, and finish levels. Permit processing times can also be longer in Santa Monica, particularly for properties in the Coastal Zone, so working with an experienced contractor who can efficiently navigate the approval process is invaluable.

Finding the Right ADU Contractor in Santa Monica, CA

When searching for the best ADU contractors near Santa Monica, homeowners should look for professionals who are:

Investing in a qualified Santa Monica ADU contractor ensures your project is completed on time, within budget, and in full compliance with all local and state regulations.

ADU Contractors near Santa Monica, CA