RnD BuildersBlogBlog category

ADU

Planning an ADU or garage conversion in Los Angeles or Ventura County? These guides cover costs, permits, plans and rental income.

Hawthorne 750 sqft ADU: Hawthorne 750 sqft ADU: Landscaped backyard with green lawn, concrete pavers, planter beds, and covered patio ADU in Hawthorne by RnD Builders Inc
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ADU reviews from Google

What ADU Clients Say

5.0
Based on 49 Google reviews
Elliott Hord
Sep 7, 2026
I connected with Roi via Reddit on a post I had regarding a construction question. I live in Sacramento and Roo lives in LA. I sent him my building plans and we hopped on a call. Roy took the time to speak to me about my plans, go over all of his…
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I connected with Roi via Reddit on a post I had regarding a construction question. I live in Sacramento and Roo lives in LA. I sent him my building plans and we hopped on a call. Roy took the time to speak to me about my plans, go over all of his concerns and details about our project. He did this out of his own time and willingness just to be a helping hand on a project he has 0 financial incentive on. we spoke for over an hour on the phone and provided his professional opinion about my ADU remodel and inspection items I had concerns with. Roi was extremely detailed and went through various scenarios to ensure our course of action and engineering recommendations made sense before spending additional money on our project. I likely will never work with him as I’m on the opposite end of the state but purely based off of my convo with him, if I was in LA I’d love to get the chance to.
Response from RnD Builders IncElliott! It was our pleasure to help and give advise on the current situation you guys have. Thank you for your kind words.
Rachel Thomas
Jul 1, 2026
If anyone is looking for a contractor RnD Builders Inc was so wonderful to work with. So quick, reasonably priced, and just really great people. We had a dream of my parents moving into my backyard and they made it come true with this beautiful ADU.…
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If anyone is looking for a contractor RnD Builders Inc was so wonderful to work with. So quick, reasonably priced, and just really great people. We had a dream of my parents moving into my backyard and they made it come true with this beautiful ADU. We love it more and more everyday!
Response from RnD Builders IncWe truly appreciate your kind words! It brings us joy knowing that we could help turn your dream into reality with the ADU. Working with you and your family was a true pleasure, and we're over the moon that the results are loved and enjoyed daily. If you ever need anything in the future, we're here for you!
Ron Paz
May 13, 2022
After I received 5 quotes on ADU Garage Conversion I went with best quality-price ratio from RnD Builders.
Roi and his team were great to work with. They were always on time, quick,
efficient and there were no issues although it was a big and…
Read full reviewShow less
After I received 5 quotes on ADU Garage Conversion I went with best quality-price ratio from RnD Builders.
Roi and his team were great to work with. They were always on time, quick,
efficient and there were no issues although it was a big and complicated project.
Roi was awesome, always available and ready for any help, his great advices helped me a lot and saved me money also.
The project was finished on time, there were no unexpected costs and final product is excellent.
I would definitely work with RnD Builders again, actually we had a talk about future project!
Response from RnD Builders IncHey Ron, thank you for this review. It was definitely a challenge and we love challenges.
If you have any further questions please don't hesitate to call me.

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What You Will Find on the RnD Builders Blog

This blog answers the questions homeowners ask us most. For example, you can read what a kitchen or bathroom remodel costs, how long permits take, and which design choices hold up over time. Because each guide comes from real jobs in Ventura County and Los Angeles, the advice reflects what we see on site. As a result, you can compare real numbers before you call a contractor.

Browse the blog by topic with the filters at the top of this page. Then, if a guide makes you want to see how we work, visit our remodeling services. Before you hire any contractor, check the California contractor license (ours is CA License #1081122).

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