ADU Builder West Hills: Backyard Homes on Big Ranch Lots.
Bordering the Simi Hills and Santa Susana foothills, West Hills is known for some of the largest residential lots in the San Fernando Valley, including equestrian-zoned streets near Valley Circle Boulevard. We design and build detached backyard homes, garage conversions, and guest houses that make the most of your property, with City of Los Angeles permitting handled start to finish.
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- Licensed Class B General Contractor
- Turnkey ADU Design & Permitting

The ADU Builder West Hills Homeowners Choose
West Hills sits at the western edge of the Valley, bordered by the Simi Hills and the Santa Susana foothills, with some of the largest residential lots in the area. KN Remodeling is a licensed, insured, family-owned design-build team, and the ADU builder West Hills homeowners trust to carry a backyard cottage, garage conversion or junior ADU from the first sketch to the final walkthrough.
From equestrian-zoned streets near Valley Circle Boulevard to classic ranch homes on wide, flat lots, West Hills has room to grow. We know the City of Los Angeles zoning rules and help you add a private, independent home that raises your property value.
ADU Builder West Hills Services
Licensed Class B Contractor
Every structural detail built to City of Los Angeles codes and safety standards.
Turnkey Design and Build
Plans, engineering, permits and construction under one contract.
Ranch-Style Backyard ADUs
Detached homes designed to match the low, wide look of West Hills ranch houses.
Garage Conversions and JADUs
Smart space inside existing garages or the main home.
Framing and Trades
Structural framing, electrical upgrades and interior finishes done right.
Efficient Materials
Good insulation and efficient cooling for hot west Valley summers.
Local Details Every ADU Builder West Hills Project Checks
West Hills has a few details that set it apart from the rest of the Valley:
- Permit history under two names: West Hills was part of Canoga Park until 1987, so older permits and plans may be filed under Canoga Park. We search both names before design starts.
- Ranch homes from the 1960s and 1970s: Many homes have original electrical service and sewer lines that may need upgrades to support an ADU.
- Equestrian streets: Lots near Valley Circle Boulevard may sit in horsekeeping areas, so we place the ADU around corrals and trails.
- Hillside and fire zones: Homes near the Simi Hills can fall in fire hazard zones that call for fire-rated roofing and ember-resistant vents.
- Large flat lots: Many properties have room for a detached ADU of up to 1,200 square feet plus a JADU.

How Our ADU Builder West Hills Process Works
Here is how your West Hills project moves from idea to move-in day:
Free In-Home Consultation
We walk your lot, check permit history and setbacks, and hear your goals.
Design and 3D Views
Floor plans and 3D renderings that match your home's style.
Selections
Choose roofing, flooring, cabinetry and fixtures within your budget.
Permits
We file with LADBS and handle engineering and plan check corrections.
Construction
Our crew builds your ADU safely, cleanly and on schedule.
Final Walkthrough
We review every detail with you and close out the permit.
ADU Builder West Hills Cost Guide
Your price depends on size, ADU type, site work and finishes. Typical Los Angeles ranges:
- Garage conversion or JADU: roughly $90,000 to $150,000
- Detached ADU, 500 to 800 sq ft: roughly $180,000 to $260,000
- Larger detached ADU, 800 to 1,200 sq ft: roughly $280,000 to $350,000 or more
Older electrical service, sewer upgrades and fire-zone details can affect the budget. As your ADU builder West Hills team, we give you a written, itemized estimate after the free consultation. Compare a detached ADU, an attached ADU and a garage conversion, see the nearby Canoga Park page, or review the California ADU handbook.
ADU Builder West Hills FAQs
How much does an ADU builder West Hills project cost?
Garage conversions and JADUs usually run about $90,000 to $150,000. Detached ADUs typically range from about $180,000 to $350,000 or more, depending on size, site work and finishes.
Why do my property records say Canoga Park?
West Hills was part of Canoga Park until 1987, so older permits and plans may use that name. We search records under both names.
Will my 1960s ranch home need upgrades for an ADU?
Often, yes. Older homes may need a larger electrical service or sewer work, which we include in your estimate.
Can I build an ADU on an equestrian lot?
Usually, yes. We place the ADU so corrals and trail access still work, and we check any horsekeeping rules for your lot.
Who issues ADU permits in West Hills?
West Hills is part of the City of Los Angeles, so permits go through LADBS. We handle the filings, plan check and inspections for you.
Can I rent out my West Hills ADU?
Yes. Long-term rentals of 30 days or more are allowed. Short-term rentals are generally not allowed for ADUs in Los Angeles.
Talk With an ADU Builder West Hills Families Trust
Book a free in-home consultation and find out what your lot can hold.
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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.