Schedule a Call
ADU Financing

Get your free

ADU estimate


Try our free all new pre-release web-app


ADUs or Accessory Dwelling Units are the most in-demand construction projects of 2022. As a leading ADU construction company, we offer end-to-end services. This includes the design, plans, permits, build, and lastly the final sign-off by the city.


We are a SoCal Premier Builder and have been for years. Our legacy dates back over 25 years. One of the toughest goals to accomplish when building anything is dealing with the city regulations. Our years of experience as top contractors in Southern California have given us the ability to navigate this with ease.

Watch our You Tube Videos

Ask About our Most


DREC | Junior ADU / Garage Conversion
DREC | Attached ADU
DREC | Detached ADU
DREC | 2nd Story ADU
get started


DREC | ADU Framing


We are the industry leader when it comes to ADU designs. Our design team will work directly with you while coordinating with our team of ADU home builders to create a one-of-a-kind ADU blueprint, custom designed to meet your aesthetical and functional needs.


The laws regarding ADUs are changing constantly. We understand those laws and keep up with changes as they happen. Currently, California allows for one Junior ADU and one Full ADU attached or detached.

Floor Plans and Check List

County Standard ADU Plans








1000 SQFT - 1 BEDROOM, 1.5 BATH







As one of the top construction companies in Southern California, we have a wide variety of blueprints and completed projects for you to choose from. No matter what type of ADU you are looking for, chances are we have something close to what you have in mind. Our designers and contractors will work closely with you throughout the process, starting from ideating the plans to development and the final walk through to make sure that the ADU you have been dreaming of is the same exact one that ends up in your backyard. Call us today to get started with your ADU construction!


By adding an ADU to your property, you could easily increase your property's value by hundreds of thousands of dollars. Often times we see properties selling for 30% to 40% more simply by adding an ADU. All the more reason to connect with our Southern CA home builders for ADU construction! Are you considering renting your new ADU? With Southern California’s rental rates you could easily offset your mortgage payments with the additional income.

DREC Design Plans
Why Choose DREC?

Nobody Understands ADUs QUite like we do


We make sure that your brand new ADU is not only energy efficient but operates as close to net zero as possible. That means your ADU is cool in the summer and warm in the winter.


Our ADU builders make the entire process completely convenient for you. From beginning to end, we make the process seamless and easy. We pull the permits and handle all of the construction related issues.


No other ADU home builders in Southern California have pushed the envelope as much as we have. Many of the designs and industry trends you see in the ADU Business were pioneered by DREC. We take great pride in our creations.


We ethically sources all of our materials here in the USA. Anything that we install on your ADU was the closest we could find to a net zero product. We care about the environment and carbon footprint.


Before we do any ADU construction, we make sure that you get the best possible deal. We are one of the few builders in Southern California to offer in house financing for your ADU Project.


The building code in California is complex and changes city to city. We always build your ADU to the code. We have two decades of experience as general contractors and ADU home builders.


During the design process we invite you to speak with us about what types of features you would like to see built-in. We will go out of our way to give you a one of a kind design.


We are affordable ADU builders who know how to run a tight budget. It allows us ensure savings for the client. Give us a chance to impress you.



Jasko BogilovicJasko Bogilovic
20:52 15 Feb 24
Great ADU builder with super high quality
12:11 11 Sep 23
We had our adu garage conversion completed this past year and our very happy with the results.
Hary SullivanHary Sullivan
14:22 15 Oct 22
Vicky KVicky K
09:33 07 Oct 22
Quality was good, and the professionalism was good with me. Thanks guys, I like what you did for me.
rawdy Smithrawdy Smith
07:21 20 Sep 22
All good with our ADU build. Can’t complain about a single thing. Timing was spot on, quality was good, and the professionalism was good with me. Thanks guys, I like what you did for me.
Sara FuerstSara Fuerst
06:59 25 Aug 22
I have used DJ on multiple projects over the last few years. Everything from an add-on to new construction. DJ and his team have always been reliable and trust worthy. I find DREC to be extremely professional with very reasonable rates. We have used DJ 4 separate times over the last 3 years on 3 different projects. His demeanor is extremely professional and he is easy to communicate with he never comes off pushy or arrogant. He is extremely knowledgeable and seems to have a strong mind for attention to detail. DJ walked the job site nearly everyday checking on the status of the job. Highly recommend this business.
Joann NorellJoann Norell
07:08 16 Aug 22
I am not big on posting but, I am so happy with the outcome of my addition I just felt it was important to share. I already had plans ready for DJ and he priced me out at a great price and stuck to it all the way through. The quality was great, really like the workers, nice guys. Everything was good!
David ManDavid Man
05:40 15 Aug 22
I hired These guys to build my ADU and happy I did. Vary fast even with the city slow down between inspections. Good job guys. I reccommend DREC.
Stephen JhonStephen Jhon
16:55 13 Aug 22
DREC did a great job on my remodel and new back house. I am very please and have no complaints. Great job guys! Thanks.
Farmer JenningsFarmer Jennings
19:36 31 Jul 22
I had a good experience with this company. The quality was great, but the cost was much more then I had expected. I had many changes through out the process that I wanted for things I did not know at the time when I first did my plans. DJ recommended these changes and they were good ideas but it caused my over all cost to increase by a lot. If I had to do it again I would not have made those changes. I am on a fixed income and those changes caused my monthly payment to go up almost a $90 a month. I am not happy about that. I think for certain people those upgrades would be nice but for me they did not help me and I never plan on selling my house so the added value means nothing”.
Dinan FrancisDinan Francis
08:11 28 Jul 22
I already had approved plans with the city when I meet with DJ. My ADU took roughly 4 months to build from the time we signed the contact to the finish. I would use them again without a doubt. It was a rough start in the beginning because the city inspector who seemed difficult to deal with and delayed us for a few days over set backs issues but we worked around those obstacles and now we are pleased with the final product.
Jamie HillsJamie Hills
18:27 09 Jul 22
We hired DREC Construction to build a 1,800 sqft add-on to our existing home. The entire process took just about 7 months from start to finish. I am extremely pleased with not only the quality of craftsmanship but also the professionalism of each and every employee. We spend just under 2 months in planning and then once that was through these guy moved fast and never missed a day. Thanks guys and I will be calling you for my Newport Beach house. Talk to you soon.
Gary MannGary Mann
18:24 09 Jul 22
This is my second time using DJ and his team. Thumbs up to these guys. Also, I highly recommend using these guys if you are building a new home.
Jerrica RiggsJerrica Riggs
19:02 04 Jul 22
I am not one for writing reviews, its just uncomfortable. However, after my experience with this company I am truly pleased and thought I would share that. This is my first time working with a contractor. These guys were great. I had a detached ADU built in my back yard in less than 6 months and 45 days of that was the city delay for plans. These guy work fast and clean. I can’t recommend them enough.
David JhonDavid Jhon
20:05 28 Jun 22
We just finished our ADU, or in our case it’s my Mothers new home. We are so happy that this was super simple. DJ and his staff took care of everything. This process was so stress free and they finished ahead of schedule. Only issue we had was the yard was very messy, they had to dig up our beautiful flower. I still give them a 5 star rating! Thanks again for all your help.
Silvia CSilvia C
08:39 23 Jun 22
Finding a contractor was extremely stressful. We chose Dj and his amazing group. We are happy with the final result. Thank you for everything. You made our our even more beautiful and the process stress free.
Roshan AvilaRoshan Avila
04:10 22 Jun 22
I typically am not a fan of posting reviews but in this case I thought it would be appropriate. We built a new house on the back of our property and added on to the existing home. We interviewed 3 different contractors and finally choose to go with Drec. We spook with DJ over the phone and I think that the main reason we chose them was right from the start they seemed extremely transparent. I never felt that pushy sales man type pitch. There were vary knowledgeable on all the codes as well as what would be required from the city. The craftmenship was superb and they did a really good job of keeping our work site clean everyday. That was important to me. Overall this company out performed my expectation.
Jimmi HardingJimmi Harding
16:44 21 Jun 22
We finally decided to build our ADU and after all this time we decided to moved forward with DJ at DREC Construction. This was the right move, we are super happy with the level of professionalism as well as the quality of work. We had no idea of construction, that is why we choose to go with DJ. He walked us through the entire process. He handled everything, engineering, plans, permits, and really helped out with the design process. DJ’s team was great. I am very please with the final product and would recommend DREC to everyone.
Kevin BenitezKevin Benitez
07:09 20 Jun 22
I have been dealing with DREC Construction for months. They are very professional and do quality work. They follow specs as required and are always prompt. I would recommend that if you have a need for a general contractor-reach out to DREC Construction. You won’t be disappointed.
Alan GeorgiaAlan Georgia
07:04 20 Jun 22
DREC Construction built me the most beautiful office. Everyone was professional and so kind during the entire process. I highly recommend using DREC Construction for all of your future projects. Absolute best in the business!!
how we help you

the drec adu difference

The DREC ADU Difference


One of the most common questions we are asked when we first speak to a prospective ADU client is what separates us from other ADU home builders in Southern California? The answer for us is simple! We have years of experience, great customer service and a competitive pricing.  Our attention to detail that makes us your top pick, and our level of quality is years ahead of our competition.

We have spent the past 2 decades building Single Family Residents, Commercial Properties as well as High-End Spec Homes. This experience has led us to become the leading Southern CA home builders.

We have been building ADUs in Southern California before there was even a term used. We typically called them garage conversions or mother-in-law houses or granny flats. It is only recently that the term ADU (Accessory Dwelling Unit) has become so popular.  Once California passed the most recent Assembly Bill (AB) 1584 the term has become so well known that our industry has blown up.

Beyond pulling permits and building to code, we have earned the reputation of being the green energy and green-conscious contractors of Southern California.

The changes to the ADU laws have led to many new tax credits. Feel free to give us a call today so we can get started with your one of a kind ADU construction .

contact us
contact us
close slider

jQuery('#pac-input').on("change", function() { jQuery('#pac-input').css('border', '2px solid white'); // Change the border color to white jQuery('#err_txt').hide(); });