ADU Builder Redondo Beach: Backyard Cottages, Garage Conversions and JADUs
Add flexible living space to your Redondo Beach property with a professionally planned ADU. From detached backyard homes and garage conversions to guest suites, KN Remodeling manages design coordination, construction, remodeling, and local permitting from start to finish.
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- ★ Licensed Class B General Contractor
- ★ Turnkey ADU Design & Permitting

The ADU Builder Redondo Beach Homeowners Trust
From the Esplanade and the harbor to North Redondo and the Hollywood Riviera, Redondo Beach homes come with very different lots and rules. Whether you picture a backyard cottage a block from the beach or a garage conversion near the marina, KN Remodeling is the ADU builder Redondo Beach homeowners can count on to plan it right.
We are a licensed, insured, family-owned design-build team. One crew handles design, permits and construction, with a free in-home consultation, honest pricing, a schedule we keep and a written warranty on every ADU.
Services From Your ADU Builder Redondo Beach Team
Detached Backyard Cottages
Standalone homes sized for Redondo's mix of beach-area and inland lots.
Garage Conversions and JADUs
Turn a garage or unused room into a rental or family suite.
Multifamily ADUs
ADUs added to duplexes and small apartment lots where city rules allow.
Coastal Design and Permits
Plans prepared for city review and Local Coastal Program standards.
Turnkey Design and Build
Plans, engineering, permits and construction handled by one team.
Coastal-Grade Materials
Corrosion-resistant hardware, quality windows and finishes built for salt air.
Redondo Beach ADU Rules to Plan Around
Redondo Beach is its own city with local ADU rules in Municipal Code Section 10-5.1506. A local ADU builder Redondo Beach owners hire should check these details for your lot:
- Coastal Zone: The harbor, pier, Esplanade and much of South Redondo are in the Coastal Zone, where Local Coastal Program standards apply.
- Separation from the main house: Detached ADUs generally need about 5 feet from the main house unless the walls are fire-rated.
- Garage conversions and parking: Converting a garage may require replacement parking in some cases, so we check this early.
- Multifamily lots: Duplex and apartment lots can often add ADUs, with limits on how many detached units fit.
- Sloped and view lots: Hillside lots near the Esplanade and Hollywood Riviera may need extra engineering and review time.

How Our ADU Builder Redondo Beach Process Works
Here is what to expect when you partner with us on your Redondo Beach ADU:
Free In-Home Consultation
We walk your lot, confirm coastal status and talk through your goals.
Design and 3D Plans
Floor plans and renderings sized to Redondo's height and setback standards.
Selections
Choose coastal-grade finishes, flooring and fixtures within your budget.
City and Coastal Permits
We handle the city ADU permit and coastal requirements where they apply.
Construction
Our crew builds safely and cleanly, with regular updates.
Final Walkthrough
We review every detail with you before handing over the keys.
ADU Builder Redondo Beach Costs
Coastal lots, slopes and finishes all shape the budget in Redondo Beach. Typical ranges:
- Garage conversion or JADU: roughly $100,000 to $175,000
- Detached ADU, 400 to 800 sq ft: roughly $210,000 to $335,000
- Larger or hillside ADU: roughly $325,000 to $450,000 or more
Every ADU builder Redondo Beach estimate we write is itemized after a site visit. Learn more about the cost to build an ADU in Los Angeles and ADU rental requirements, or visit the City of Redondo Beach website.
ADU Builder Redondo Beach FAQs
Why hire a local ADU builder Redondo Beach homeowners recommend?
Redondo Beach has its own ADU code, a large Coastal Zone and a mix of flat and hillside lots. A local builder knows which rules apply and designs to them from the start.
Is my Redondo Beach property in the Coastal Zone?
Much of the harbor, pier, Esplanade and South Redondo area is. Coastal lots follow Local Coastal Program standards, which can add review time. We check your parcel first.
Do I need replacement parking if I convert my garage?
Sometimes. Redondo Beach may require replacement parking for some garage conversions, while transit-area lots are often exempt. We confirm what applies to you.
Can I add an ADU to my duplex or apartment?
Often, yes. Many multifamily lots can add ADUs, though the city limits how many detached units are allowed.
How much does an ADU cost in Redondo Beach?
Garage conversions often start around $100,000, and detached ADUs usually run about $210,000 to $335,000 depending on size and finishes.
How long does a Redondo Beach ADU take?
Most projects take about 4 to 7 months for design and permits, then 4 to 7 months to build. Coastal or hillside lots can take longer.
Ready to Build Your ADU in Redondo Beach?
Book a free in-home consultation with the ADU builder Redondo Beach families trust and see what your lot can support.
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What Our Clients Are Saying
We are deeply honored by the feedback from our extensive list of 100+clients regarding our services.
EXCELLENT Based on 46 reviews Jeffrey MorrisTrustindex verifies that the original source of the review is Google. We used k&n Remodeling for a complete kitchen remodel, and they were so amazing! Nathan and his team were very professional and did excellent work. We are so happy with our new kitchen! Richard TaylorTrustindex verifies that the original source of the review is Google. I was very satisfied with the work KN Remodeling did on my kitchen. They were very professional and finished the job on time. The quality of their work was excellent and they were always available to answer any questions or concerns I had. I would highly recommend KN Remodeling to anyone looking for a reliable and efficient kitchen remodeler. Nadia MunozTrustindex verifies that the original source of the review is Google. "I recently had the pleasure of working with KN Remodeling on adding an Accessory Dwelling Unit (ADU) to my property, and I couldn't be happier with the results. The team at KN Remodeling was professional, efficient, and extremely knowledgeable throughout the entire process. The quality of their ADU products exceeded my expectations, and the final result was exactly what I envisioned. I highly recommend KN Remodeling for anyone looking to add an ADU to their property. Thank you for a job well done!" Ching BaltazarTrustindex verifies that the original source of the review is Google. We have done two major home renovations with Nathan and his team over the last few years. They are great to work with: very professional and responsive, so when we wanted to remodel our kitchen, we trusted them with the project. They completed the work quicker than the estimated time frame and within budget. We could not be happier with the outcome and we're already planning future projects with his team. We strongly recommend KN Remodeling for any home projects you may have! Sally ChabertTrustindex verifies that the original source of the review is Google. KN Remodeling did a fantastic job on a complete remodel of our kitchen-from planning to completion, the job was seamless, on time and budget, and we are delighted with the results. Nathan had very helpful suggestions and an aesthetic eye for detail. His crew was professional, reliable, meticulous in their work, and a pleasure to have around. The entire team was courteous and very respectful of our living area and left our space tidy at the end of each work day. I wouldn't hesitate to hire them again or to recommend them to family and friends. We feel lucky to have found them. Jose PrendesTrustindex verifies that the original source of the review is Google. We took A LOT of quotes on our kitchen refresh, and Nathan was the only one who wasn't pushy or threw out high-pressure sales pitches. He listened to our concerns and approached them realistically and offered options that were doable, and not empty promises. His work teams were very professional, worked diligently, and were never rude. They took as much care of our house as we would. Even when we pointed out certain imperfections and mistakes they were quick to fix and patch up. Our kitchen was done way sooner than we had anticipated, so that's always a plus. One of the things I really liked about Nathan was that he was always a phone call away and he was very attentive to our concerns. He never dismissed us or ignored us. He cared and he never let us down. We've had experiences with other companies that have been less than favorable, and what we disliked the most was being ignored when we noticed imperfections in their work. Even today, as the kitchen is finished and Nathan came over to do final checks, we noticed our drawer hardware was rusty (it was a refresh and not a remodel), and Nathan offered to send someone over to install new ones free of charge. I would wholeheartedly recommend this company, and especially Nathan, who I found to be an honorable contractor. Ralph DavisTrustindex verifies that the original source of the review is Google. Nathan's team did two projects for us: new roof and finishing off our garage with drywall, paint and new cabinets. We couldn't be more pleased. Completely professional crew, friendly, attentive and project was completed on time. Working with Nathan was a pleasure and we would use KN again for sure. Highly recommend. HSZ33Trustindex verifies that the original source of the review is Google. I highly recommend Nathan and his team. They are Professionals who get the job done right the first time. Nathan truly cares and is very passionate about high-quality work. Thank you for a job well done. We definitely look forward to working with you again Banafsheh EsmaeiliTrustindex verifies that the original source of the review is Google. professional team, they get the job done fast, on time, with amazing results. Mr Nathan saved our unit with his professional experience and great knowledge we highly recommend him.