ADU Contractor in Santa Monica, California
Backyard, attached, garage and junior ADUs for Santa Monica homes, designed for local rules and built by DYM crews.
- Site review before any drawing
- Energy and water rules planned in
- City and coastal permits handled
- Construction by in-house teams
Ready to get Started?
Get A $1000 Off Your Renovation
Ready to get Started?
Get A $1000 Off Your Renovation
Adding a Second Home Behind a Santa Monica House
An accessory dwelling unit is one of the few ways to add a home on a Santa Monica lot without replacing the house already there, whether it will be rented to a long-term tenant, used as a studio or kept for family. Many Santa Monica lots are compact and served by a rear alley, often with a detached garage at the back, and that layout shapes which kind of unit fits.
DYM Builders plans ADUs from the site outward. Before any drawing, we look at the yard, the alley or street access, setbacks, utility capacity and whether the existing garage is worth converting. Then we lay out the options: a new detached unit, a unit attached to the house, converting the garage, or carving a junior unit out of the existing home.
Designing a Santa Monica ADU Around Local Requirements
In the eyes of the city, an ADU is still new construction, so building and energy codes for new buildings apply, and Santa Monica’s local energy and water rules can shape the design. Because the city has pushed new construction toward all-electric design, we usually plan the unit with electric heating, hot water and cooking and check the electrical service early, since an older main-house panel may need an upgrade. Near the ocean, a parcel in the Coastal Zone can add a coastal review step. Our sister firm, Arch by DYM, designs the unit to meet these requirements while still feeling like a home rather than a box in the yard.
Construction stays with our in-house teams from foundation to final inspection. Our nearest published ADU work is a Torrance project of ADUs and garage conversions, and the photo in this section comes from it. For a sense of how we build from the ground up, see our new home in nearby Culver City. If your garage is the better starting point, our Santa Monica garage conversion page covers that route, and our ADU contractor service page explains the full process.
As Seen in News
Our Services in Santa Monica, CA
Build
DYM Builders Group delivers elite New Construction, from bespoke Custom Homes and ADUs to seamless Home Additions. We specialize in high-impact Multi-Family and Commercial Builds, combining structural integrity with premium design.Â
RENOVATE
DYM Builders Group transforms properties with Complete Remodeling and expert Garage Conversions. We deliver high-end Kitchen and Bathroom upgrades alongside professional Commercial Renovations.
DESIGN & PLAN
DYM Builders Group creates the blueprint for success with precision Plans and Engineering. We offer sophisticated Residential and Commercial Interior Design alongside expert Landscape Design to ensure every detail is perfectly planned.
LANDSCAPING
DYM Outdoor Living creates luxury exterior spaces with custom Swimming Pools, Outdoor Kitchens, and Patio Covers. We provide full-service landscaping, including Retaining Walls, Concrete Driveways, and Paver installation. From Fire Pits to Artificial Turf and Irrigation, we build complete outdoor environments designed for relaxation and durability.
The DYM Method
01
Initial Consultation
First we listen, then we work! At DYM Builders, we start by hearing your ideas and goals. We make sure we get exactly what you want for your project. Only then do we roll up our sleeves and create the perfect solution just for you!
02
Plan & Design
Our team at Arch by DYM builders are pros at creating smooth build processes that eliminate errors. We’ll sit down with you to craft the perfect plans and interior designs. Our goal? To make your project as seamless as possible!
03
Break Ground
Why Choose DYM Builders?
Comprehensive In-House Expertise
We manage every phase of the design-build process internally, ensuring our architects and builders remain perfectly synchronized from start to finish.
Seamless Project Continuity
Experience a stress-free journey as we transition effortlessly from initial blueprints and engineering to the final structural finishing touches.
Unified Communication
By keeping all stages “under one roof,” we eliminate the risk of miscommunication, ensuring everyone, including the client, is always on the same page.
Reliable On-Time Completion
DYM Builders Group ensures every milestone is met with precision, delivering your completed project on schedule without compromising on quality.
Frequently Asked Questions
What types of ADUs can be built in Santa Monica?
The main options are a detached unit in the rear yard, an attached unit that shares a wall with the house, a conversion of an existing garage and a junior ADU carved out of space inside the home. Which one fits depends on the lot size, setbacks, access and how independent you want the unit to be. We compare them for your property before design starts.
Does alley access help when building an ADU in Santa Monica?
It often does. A rear alley can give the unit its own entrance and makes it easier to bring in materials and equipment without crossing the main house. Setbacks from the alley and the location of utility lines still apply, so we measure and plan those details at the feasibility stage.
What makes ADU permitting in Santa Monica different?
Santa Monica applies local energy and water standards alongside state ADU law, and lots close to the ocean can add a coastal approval. None of that blocks a well-planned unit, but it does mean the design has to account for it from the start. We produce the drawings and energy calculations required and take care of the submittals.
Can I rent out an ADU in Santa Monica?
Long-term rental is one of the most common reasons owners build an ADU. Santa Monica restricts short-term vacation rentals, so check the current rules before planning around that kind of use. We design units for comfortable full-time living, with a real kitchen, a full bathroom and good storage.
How will an ADU change my Santa Monica yard?
On a compact lot the unit takes a real share of the yard, so placement matters. We position it to keep a usable patch of outdoor space for both households, turn windows and entries away from the neighbors where we can, and plan construction so the work disturbs the main house as little as possible. For a South Bay comparison, see how narrow lots shape an ADU in Redondo Beach.
Start Planning Your Santa Monica ADU
Share your address, the purpose of the unit and any photos of the yard or garage. We will assess access and utilities, explain which ADU types and approvals apply, and describe how design and construction would proceed. For remodels and new homes in the city, visit our Santa Monica remodeling and construction page.
