Derek grew up in the Cascade Mountain range of Southern Oregon. Building has always been in his blood. It was through a dedicated high school Wood Shop teacher that he was initially introduced to the construction trade. That led to a carpenter apprenticeship and a career that kicked off at the age of 19 when he was one of the youngest licensed building contractors in the region.

After many years of building ADUs for clients and friends, Derek decided he could put that skill and passion into buying a home and developing projects that would help him gain some financial independence.

Housing prices vary by location but there is no arguing that home prices are flat out cost-prohibitive for so many people. In many markets, the ADU strategy has become a necessity to offset the steep cost of a mortgage in the local market. So that’s how the ADU passion was born.

After finding very limited resources on the topics of planning, permitting, designing and building an ADU, Derek has been on a quest spanning two decades to crack the code on this powerful housing tool. He has made this endeavor his life’s work and looks forward to helping you and your family take the plunge through a simplified step-by-step process.

Mission

  • Contribute to the ADU movement and it’s role in addressing the housing crisis and particularly the shortage of workforce and multi-generational family dwellings.
  • Teach everyday, average people how to create passive income that can put them on a path to greater financial independence.
  • Share knowledge of ADUs and passion on the subject with fellow travelers on the road.

“Derek builds a fairly standardized 520 sq ft ADU for approximately $60K, and is currently putting together a 200-step video series to open source to others about how to do the same. He does this sheerly as an advocacy matter to help spur others to develop ADUs. The West coast could use more Dereks.”

-Kol Peterson

https://www.buildinganadu.com/adu-blog/adulessons-eastbay-california

Derek standing in the ‘storage loft’ space of his standard ADU
EXCELLENT
17 reviews on
Alex Diaz
Alex Diaz
2022-05-08
I’m a first time home buyer and after watching the bigger pockets episode with Derek I decided to schedule a consultation with him. I just got done talking to Derek on the phone and I can honestly say he was extremely helpful and answered every question I had about ADUs and even offered to help me in the process! Thanks again Derek!
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Brent Maier
Brent Maier
2022-04-13
It's challenging to put into words just how dialed Derek is when it comes to real estate and ADU's. I spoke with Derek during a 1 hour Home Owner Consultation and I can honestly say that it was one of the most valuable conversations I have ever had. If you are on the fence about paying for a call with Derek, don't be. It will be some of the best money you have ever spent. The insight and value that Derek brings to the table is bar none. He will give his honest opinion after listening to your goals and will help guide you to a path of action and practicality. Not only is he extremely helpful when it comes to estate, he is also an all around great person. It's not hard to tell that Derek truly loves helping others and is passionate about seeing others succeed. I HIGHLY recommend booking a call with Derek if you are looking at converting/building an ADU or if you are just interested in real estate investing in general.
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leo anderson
leo anderson
2022-04-13
I recently heard Derek on an episode on Bigger Pockets. I've been going in circles with LA city planning, LADBS and BOE to try and figure out how to go about an adjacent lot my neighbor wants to sell me. I heard Derek's knowledge on that podcast and started following him on Instagram and went to his website on thataduguy.com. I messaged him and can you believe what happened next? He responded to my message the same day and even CALLED me to help me figure out what steps were necessary to go about building an ADU on a property I want to purchase!! He freakin CALLED me! This dude is not only willing to help those Real Estate newbies, but will lead you in the right direction! Do not give up of you have an idea and have heard a few No's. Thank you Derek!! I will get in touch once I have built my ADU. Pics to come...
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Scott Meyers
Scott Meyers
2022-03-30
I heard Derek on #biggerpockets. (A “must hear” episode.) I was taken by his passion for people and he had some great insights that started me thinking about options on one of the properties my wife and I own. I had some follow-up questions. Derek took my call and had insightful answers. I have some ideas now on breaker panel placement and plumbing options. I wasn’t aware of the pump toilet option. Pretty cool contraption. It was great chatting with Derek and he left me with some things to chew on in regard to other places in which we are looking to purchase. Thanks for taking the time, Derek. Your generosity is no small thing! Scott - Central IL
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Mathew Knitter
Mathew Knitter
2022-03-26
Derek was an awesome asset when it came to building an ADU. He is a wealth of knowledge about everything ADU. Anytime I hit a roadblock or had a question, he was the guy to call.
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Keith Miller
Keith Miller
2022-03-23
Derek is an absolute rock star. He has an incredible depth of knowledge about ADUs. His knowledge is not just theoretical, it comes from years of hard work and practice. He is very helpful and straight to the point when it comes to sharing his knowledge, and I highly recommend using him as a consultant for any ADU-related learning or issues. 5/5 stars!
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Gal Evergreen
Gal Evergreen
2022-03-21
Derek is knowledgeable, and inspiring. Thank you for your work in the ADU space and willingness to teach first time homebuyers of creative ways to maximize their investment.
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Brian Everett
Brian Everett
2022-03-16
Derek is amazing. The man is well informed, and wants to help people in their journey. 10 out of 10.
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gar clay
gar clay
2022-02-27
Derek has been a tremendous resource for me. I lost my home in the Almeda Fire and Derek has been valuable in helping me weigh some of my rebuild/repurchase options. He has been generous with his time and every time I meet with him I learn something about real estate/rebuilding/ADUs. He is very savvy regarding the local ADU policies and you would be lucky to have him as part of your "team." Thanks Derek !
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Nick Daleo
Nick Daleo
2022-02-23
Derek's knowledge of ADUs seems endless! He shared information with me regarding a first time purchase of a property with an existing ADU. As first time home buyers, we feel that we have a fair grasp on the ins and outs of the process but Derek's expertise on zoning and ADUs was key to our understanding. I look forward to talking with Derek more regarding this property and hopefully more to come!
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