Accessory Dwelling Units (ADUs) have become one of the most valuable and practical construction options for homeowners in Los Angeles. Whether you want rental income, room for extended family or a higher property value, Perfection Builders is a trusted ADU contractor in Los Angeles, delivering high-quality, fully compliant ADU construction from start to finish.
With California’s evolving ADU laws and Los Angeles zoning rules, building an ADU takes experience and a deep understanding of local requirements. Perfection Builders handles every step, so your ADU is designed, permitted and built correctly, without delays or costly mistakes.
Recent ADU project in Los Angeles · See the ADU gallery →
Full-Service ADU Contractor in Los Angeles
We manage your ADU from concept to completion: site evaluation, design, architectural plans, engineering, permits, construction and final inspections. We work closely with city departments and inspectors to keep your project moving.
Los Angeles ADU permits, setbacks, parking rules and utility connections can be complex. Our experience helps you avoid lost time, stress and unexpected costs.
Built for Comfort, Quality and Value
Every ADU we build meets the same standards as a primary home. We focus on smart layouts, energy efficiency, natural light and durable materials, from modern studios to full one- and two-bedroom units.
A well-built ADU adds property value and can bring long-term rental income. We make sure your investment is built right the first time.
Why Choose Perfection Builders for Your ADU?
- Experience building ADUs across Los Angeles
- In-depth knowledge of local zoning and ADU rules
- Clear communication and project timelines
- Skilled craftsmanship and attention to detail
- One project manager from start to finish
Building an ADU is a big decision. Our goal is to make the process simple, organized and stress-free.
Our ADU Process
- Free site evaluation. We check your lot, setbacks, utilities and which ADU types are allowed.
- Design and plans. We design a layout that fits your goals: rental income, family or a home office.
- City permits. We submit plans and work with the city through plan check and approval.
- Construction. Foundation to finishes, built to the same standard as a primary home.
- Final inspection and move-in. You get a legal, ready-to-rent or ready-to-live unit.
ADU Questions
How big can an ADU be in Los Angeles?
It depends on your lot and the ADU type. Detached ADUs are often allowed up to 1,200 sq ft. We confirm what your property allows during the free site evaluation.Do I need parking for an ADU?
Often not. California law waives parking for many ADUs, for example near public transit or in garage conversions. We’ll confirm what applies to your property.Can I rent out my ADU?
Yes. ADUs can be rented long-term, which is why many homeowners build them for extra income.Can you convert my garage into an ADU?
Yes. Garage conversions are often the fastest and most affordable ADU option.Recent ADU Project
A complete ADU we built in Los Angeles: a full kitchen with shaker cabinets and quartz counters, a bathroom with a frameless glass walk-in shower, and an in-unit washer and dryer. See more in our ADU gallery.
Types of ADUs We Build
- Detached backyard ADUs: a separate small home with its own entrance, kitchen and bathroom
- Attached ADUs: built onto the side or back of your house
- Garage conversions: turning an existing garage into a legal living unit
- Junior ADUs (JADUs): up to 500 square feet carved out of your existing home
- ADUs above a garage: a second-story unit that keeps your yard open
ADU Rules in Los Angeles at a Glance
California law makes ADUs allowed on most single-family and multifamily lots. Detached ADUs can generally be up to 1,200 square feet, with 4-foot side and rear setbacks. ADUs under 750 square feet do not pay impact fees, and ADUs over 500 square feet pay school district fees. The City of Los Angeles also has a Standard Plan Program with pre-approved ADU designs that can shorten plan check. Rules change often, so we confirm what applies to your lot before design starts.What Affects the Cost of an ADU
- Size, and detached, attached or garage conversion
- Site access for equipment and materials
- Utility connections: sewer, water, gas and electrical panel upgrades
- Foundation and soil conditions, especially on slopes
- Finishes, appliances and fixtures
ADUs Across Los Angeles
We build ADUs throughout Greater Los Angeles. See our pages for ADUs in Encino and ADUs in Santa Monica, or our full service area.Does Los Angeles have pre-approved ADU plans?
Yes. The City’s Standard Plan Program lists ADU designs that have already been reviewed, which can save time in plan check. We can build from a standard plan or design a custom ADU for your lot.Can I live in the ADU and rent out the main house?
In most cases, yes. California does not require the owner to live on the property for most ADUs. Junior ADUs have different rules, so ask us about your situation.Start Your ADU Project Today
If you’re considering building an ADU in Los Angeles, Perfection Builders is ready to help. From backyard ADUs to garage conversions, we provide expert guidance and quality construction every step of the way. Contact Perfection Builders to schedule a free in-home consultation and take the first step toward maximizing your property’s potential with a professionally built ADU.Wondering about cost? See our starting prices for ADU projects in Los Angeles.