ADU Remodeling Los Angeles: Renovate, Legalize or Build New.
From the Valley to the Westside, we design and build custom ADUs, garage conversions, and guest houses tailored to your property and neighborhood. Our team manages City of Los Angeles (LADBS) permitting from start to finish, so your ADU project stays on track.
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- Licensed Class B General Contractor
- Turnkey ADU Design & Permitting
ADU Remodeling Los Angeles Homeowners Can Trust
Not every ADU project starts from an empty backyard. Many Los Angeles homeowners already have an old guest house, a converted garage or a dated rental unit that needs work. KN Remodeling is a licensed, insured, family-owned design-build team that handles ADU remodeling Los Angeles property owners need, from refreshing an existing unit to building a brand new one.
From the San Fernando Valley to the Westside, we know the City of Los Angeles zoning and permit rules and help you turn extra space into a safe, permitted home that adds real value to your property.
ADU Remodeling Los Angeles Services
Existing ADU Renovations
Update kitchens, bathrooms, flooring and finishes in an older ADU or guest house.
Legalizing Unpermitted Units
Bring an unpermitted garage conversion or back unit up to code and get it permitted.
Detached Backyard ADUs
New standalone homes designed around your yard and main house.
Garage Conversions and JADUs
Turn underused space into a rental unit or family suite.
Structural and Systems Upgrades
Foundations, framing, electrical panels, plumbing and insulation brought up to code.
Licensed Class B Contractor
One licensed team for design, permits and construction.
When ADU Remodeling Los Angeles Projects Make Sense
Remodeling an existing unit is often faster and more affordable than starting over. These are the most common situations we see:
- Dated guest houses: Older backyard units often need new kitchens, bathrooms, windows and insulation to rent well.
- Unpermitted conversions: Garages or back units converted years ago without permits can often be legalized and made safe.
- Tenant turnover: A refresh between tenants can raise rent and reduce repair calls.
- Accessibility updates: Step-free showers, wider doors and better lighting help parents age in place.
- Expanding an existing ADU: Some units can grow up to the size limits allowed by state and city rules.
Our ADU Remodeling Los Angeles Process
Whether you are renovating or building new, here is how your project moves forward:
Free In-Home Consultation
We inspect the existing unit or lot and check permit history.
Assessment and Design
We document what needs to change and design the updated space in 3D.
Selections
Choose finishes, fixtures and systems within your budget.
Permits
We file with LADBS, including legalization paperwork when needed.
Construction
Our crew remodels or builds safely, cleanly and on schedule.
Final Walkthrough
We review every detail with you and close out the permit.
ADU Remodeling Los Angeles Costs
Costs depend on the condition of the existing space, the scope of work and your finishes. Typical Los Angeles ranges:
- Refresh of an existing ADU: often a fraction of new construction, depending on scope
- Garage conversion or JADU: roughly $90,000 to $150,000
- New detached ADU, 500 to 1,200 sq ft: roughly $180,000 to $350,000 or more
Unpermitted work, outdated wiring or foundation issues can add to the scope, so every ADU remodeling Los Angeles project we take on starts with an inspection and a written, itemized estimate. Learn more about the cost to build an ADU in Los Angeles, what to check at your final walkthrough and ADU rental requirements, or visit the LADBS website.
ADU Remodeling Los Angeles FAQs
What does ADU remodeling Los Angeles homeowners ask for most?
The most common projects are renovating dated guest houses, legalizing unpermitted garage conversions and refreshing rental units between tenants. We also build new ADUs from scratch.
Can an unpermitted ADU be legalized?
Often, yes. Many unpermitted units can be brought up to current building code and permitted through LADBS. We inspect the unit first to see what work is needed.
Is it cheaper to remodel an existing ADU than build a new one?
Usually, yes. When the structure is sound, updating it costs far less than new construction. If the unit has major structural problems, rebuilding can be the better choice.
Do I need a permit to remodel my ADU?
Most remodels that change plumbing, electrical, walls or windows need a permit. Cosmetic updates like paint usually do not. We confirm what applies to your project.
Can I make my existing ADU bigger?
Sometimes. Many units can be expanded within the size limits allowed for ADUs, depending on your lot, setbacks and zoning.
Which areas of Los Angeles do you serve?
We work across the City of Los Angeles, from the San Fernando Valley to the Westside, plus nearby cities. See our locations page for the full list.
Start Your ADU Remodeling Los Angeles Project
Book a free in-home consultation and find out what your existing unit or backyard can become.
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