Detached ADU
A separate, standalone unit built on your lot, such as a backyard home or guest house.
Los Angeles County · Orange County · San Fernando Valley
ADU Builder in Los Angeles — Detached, Attached, Garage Conversions & JADUs.
Add a backyard unit, convert your garage or create a junior ADU inside your home, with a licensed California Class B General Contractor. Tell us about your property and we'll call you to talk through your project.
- 5.0 on Google (20 reviews)
- CA Class B Lic. #1105076
- BBB A+
- Se habla español
- Detached ADU
- Attached ADU
- Garage conversion
- JADU
5.0 ★Google rating · 20 reviews
Class BCA General Contractor #1105076
BBB A+BBB rating
EspañolSe habla español
LA · OC · SFVService area
ADU types we build
Which ADU Fits Your Property?
Not sure yet? That's fine. We'll look at your lot and your goals and help you choose.
Attached ADU
A new living unit connected to your existing house, with its own entrance.
Garage Conversion
Turn your existing garage into a finished living space.
Junior ADU (JADU)
A smaller unit created inside the walls of your existing single-family home.
How it works
Your ADU in 4 Simple Steps
Tell us about your property
Fill out the form or call (213) 842-1229. English or Spanish.
We visit and review your project
We look at your property, the ADU type you want and what your city requires.
Get a written estimate
You get a clear, written scope and price before any work starts.
We build your ADU
Construction managed by a licensed California Class B General Contractor.
Our work
Real Photos From Our Job Sites
ADU framing, a garage conversion, site prep and finished interiors, from our own crews.
Reviews
What Our Clients Say
“Rafa and his team helped with a ADU build here in Downey, Rafa was amazing throughout the whole process! Can’t wait to build another ADU at our second property.”
“I had a great experience with rafael they did my detached adu everything was on point the price was good and the work was done profecinally done”
“Had 2 bathroom remodels done and they are coming along better than we pictured. The whole team is great and easy to work with. Great pricing and can't wait to see how our ADU will look next.”
“Great job on my garage convertion .. nelson the foreman really pays attention to all details ...”
Why RD Fast Construction
A Licensed Local Contractor You Can Check
Licensed Class B GC
RD Fast Construction Inc. holds California Class B General Contractor license #1105076. Look it up on the CSLB website.
5.0 on Google · BBB A+
A 5.0 Google rating from 20 reviews and an A+ rating with the BBB.
Se habla español
We work in English and Spanish. Call any day, 6 AM – 8 PM.
FAQ
ADU Questions
What types of ADUs do you build?
Detached ADUs, attached ADUs, garage conversions and junior ADUs (JADUs).
What is a JADU?
A junior ADU is a smaller unit created within the walls of an existing single-family home. We can tell you if it's an option for your house.
How much does an ADU cost?
It depends on the ADU type, size, your property and your city's requirements. We give you a written estimate after we review your project.
How long does an ADU take?
It depends on the type of ADU, the scope of work and your city's permit review. We'll go over the steps for your property when we review your project.
Do I need to own the property?
An ADU is built on the owner's property, so we ask whether you own it. If you rent, the property owner can contact us directly.
What areas do you serve?
Los Angeles County, Orange County and the San Fernando Valley.
Are you a licensed contractor?
Yes. RD Fast Construction Inc. is a California Class B General Contractor, CSLB license #1105076. You can look up our license on the CSLB website. We also have an A+ rating with the BBB.
¿Hablan español?
Sí. Se habla español — llame o mande texto al (213) 842-1229.
Se habla español
ADUs: unidades separadas, adjuntas, conversiones de garaje y JADUs
Construimos unidades de vivienda adicionales (ADU) en el Condado de Los Ángeles, el Condado de Orange y el Valle de San Fernando. Contratista general con licencia Clase B en California (CSLB #1105076). BBB A+ y 5.0 en Google (20 reseñas).
Free ADU estimate
Thinking About an ADU? Let's Talk.
Tell us about your property and we'll call you to talk about your ADU.
- 📞 (213) 842-1229
- ✉️ rdfastconstruction@gmail.com
- 📍 Serving Los Angeles, Orange County & the San Fernando Valley
- 🕕 Open daily, 6 AM – 8 PM
Serving Los Angeles County, Orange County and the San Fernando Valley. Se habla español.