So if you're interested in flipping, find someone who really understands that, not someone who sells commercial real estate. 

Key is to really understand the areas you want to be in and your goals to make sure they align.

My current understanding is that ADUs may offer better cash flow, although they may not necessarily provide superior appreciation compared to condo investments, considering the anticipated decline in interest rates over the next couple of years.Thank you for your expertise and guidance!

Is anyone still involved in these or has found one to be helpful in the past?

If you don't fully understand the investment, do not invest. 

We've done about 2000 ADU's in the Southern California area, and I am also building roughly 20 ADUs currently in San Diego, I'd love to help you understand the process and how I can help.

I'd be willing to live in it which appears to have some benefits for a condo conversion depending what town you're in.The thought being that we could buy a duplex/triplex/quad, convert it to a condo, and sell off the remaining units leaving me with (at the end of the day) an affordable housing option.Here are the condo zoning laws that I found for Sunnyvale: https://www.huduser.gov/portal...My understanding is that they don't do condo conversions with <3% rental vacancy rate, but it looks like it was 3.1% from the most recent HUD market analysis for my area that I could find: https://www.huduser.gov/portal...Does anyone know someone who has done a condo conversion in the Bay Area?  

These are, or should be standards in design and build, that translate to any and all economic markets:1 - Treat the design as the first few times (changes) you will build, and pay for, the house.2 - Treat the design as a system, made up of a series of interacting systems.3 - Understand that design is a series of decisions, with each decision impacting more than just the immediate decision you are making. 

@Nate P.Your profile hints that you are living abroad.If you are a US citizen - you want to make sure that the CPA you work with understands the foreign earned income exclusion(FEIE).If you purchase a property and are expecting valuable feedback on how that property will impact your tax return, you will need to provide a rough profit and loss projection(rental income and expenses) along with purchase price to have a conversation with your accountant so that they can provide you good feedback. 

Often times the transaction between the DST and the REIT involve a significantly lower commission for the brokers.