ADU Builder Santa Monica: Backyard Cottages, Garage Conversions and JADUs
Santa Monica’s tight lots and coastal character call for thoughtful, space-efficient design. We remodel backyards into modern guest houses and rental units that fit the neighborhood’s coastal aesthetic, while managing City of Santa Monica permitting from start to finish.
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- Licensed Class B General Contractor
- Turnkey ADU Design & Permitting
Your Local ADU Builder Santa Monica Homeowners Trust
Santa Monica lots are small, valuable and close to the beach, so every square foot counts. Whether you picture a modern backyard cottage, a garage conversion for family or a rental unit that helps with the mortgage, KN Remodeling is the ADU builder Santa Monica homeowners can count on from first sketch to final walkthrough.
We are a licensed, insured, family-owned design-build team. One crew handles design, permits and construction, so framing, plumbing and insulation are done right instead of rushed. You get a free in-home consultation, honest pricing, a schedule we keep and a written warranty on every ADU.
What We Build as Your ADU Builder Santa Monica Team
Detached Backyard Cottages
Standalone homes designed to fit tight Santa Monica yards and match your main house.
Garage Conversions and JADUs
Turn an underused garage or part of your home into a comfortable suite or rental.
Turnkey Design and Build
Plans, engineering, permits and construction handled by one team.
Space-Saving Layouts
Smart storage, high ceilings and big windows so a small unit lives large.
Framing, Electrical and Plumbing
Skilled trades for structure, sub-panels, utility lines and finishes.
Energy-Efficient Materials
Quality insulation, windows and systems that keep utility bills low.
Santa Monica ADU Rules You Should Know
Santa Monica is its own city, separate from Los Angeles, with its own ADU ordinance and its own building department. A good ADU builder Santa Monica homeowners hire should know these local details:
- City of Santa Monica permits: Plans are reviewed by Santa Monica, not LADBS, so the process and fees are different from the rest of LA.
- Setbacks: Detached ADUs generally need at least 4 feet from side and rear lot lines and 6 feet from the main house.
- Preapproved ADU Program: The city offers expedited review for detached ADUs that use city-preapproved plans.
- Impact fees: ADUs larger than 750 square feet may trigger Public Works impact fees, which affects how big you build.
- Coastal Zone lots: Properties near the beach may need extra coastal review, so we check your parcel early.
How Our ADU Builder Santa Monica Process Works
Here is what to expect when you partner with us on your Santa Monica ADU:
Free In-Home Consultation
We walk your lot, check setbacks and talk through your goals.
Design and 3D Plans
See your floor plan and 3D renderings before anything is built.
Selections
Pick roofing, flooring, cabinets and fixtures that fit your budget.
Permits and Approvals
We prepare plans and handle the City of Santa Monica review.
Construction
Our crew builds safely and cleanly, with updates along the way.
Final Walkthrough
We review every detail with you before handing over the keys.
ADU Builder Santa Monica Costs
Coastal construction and higher local costs mean Santa Monica projects often land at the upper end of LA pricing. Typical ranges:
- Garage conversion or JADU: roughly $100,000 to $175,000
- Detached ADU, 400 to 750 sq ft: roughly $200,000 to $325,000
- Larger detached ADU, 750 to 1,200 sq ft: roughly $300,000 to $450,000 or more
Every ADU builder Santa Monica estimate we write is itemized, so you know exactly what you are paying for. Learn more about the cost to build an ADU in Los Angeles and ADU rental requirements, or read the city's Santa Monica ADU guide and Preapproved ADU Program.
ADU Builder Santa Monica FAQs
Why hire a local ADU builder Santa Monica homeowners recommend?
Santa Monica has its own ADU ordinance, building department and coastal rules. A local builder knows how plans get reviewed here, which saves time and avoids costly corrections.
Does Santa Monica follow the same ADU rules as Los Angeles?
No. Santa Monica is a separate city with its own ordinance and permit process. State ADU law still applies, but local details like fees and review steps are different.
How close to my property line can I build a detached ADU?
Detached ADUs generally need at least 4 feet from side and rear lot lines and 6 feet from the main house. We confirm the exact setbacks for your lot during the consultation.
What is the Santa Monica Preapproved ADU Program?
It lets owners use detached ADU plans the city has already reviewed, which can speed up plan check. We can tell you whether a preapproved plan or a custom design fits your lot better.
How long does it take to build an ADU in Santa Monica?
Most projects take around 4 to 8 months for design and permits, then 4 to 7 months of construction, depending on size and site conditions.
Can I rent out my ADU in Santa Monica?
Yes, ADUs can be rented long term. Short-term rental rules are strict in Santa Monica, so check the city requirements before you plan around vacation rentals.
Ready to Build Your ADU in Santa Monica?
Book a free in-home consultation with the ADU builder Santa Monica families trust and see what your backyard can become.
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