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Updated over 4 years ago on . Most recent reply
How to do a 2nd Story addition
Hello Investors!
I am an aspiring RE investor from the Orange County, CA area.
Hoping to get some insight on the procedures I should follow in order to get permission to build a 2nd story addition.
I've been debating whether to build up or build out for an ADU that is on my lot. The unit is rather small roughly 400sqft so I would like to expand the space. The unit is actually under the same rough as my house if that makes a difference. Would the 2nd story be drastically more expensive? The unit has plumbing, electricity, etc, I would just like to add more living space.
Any feedback is helpful, Thanks!
Most Popular Reply

@Dan Perez there are specific rules that you need to follow when building an ADU. I would reach out to @Rafael Hoefel Pozas who has alot of experience in the surrounding markets.
When building up you may need to reinforce the structure below to accommodate the additional weight. It is more expensive and extensive work involved. Good luck on your project.
Happy Investing...
- Joe Homs
- [email protected]
- 949-625-4533