You may have to make modifications or additions in order to get that signed off.

Happy to answer any additional questions. 

Contact a couple contractors to see what the cost would be to add the addition.

Here are a few additional ideas that have worked for me and others in competitive markets like Austin:Off-Market Leads from Contractors: I had a friend who rehabbed a house in North Austin last year.

Planning to start a complete home remodel (interior/exterior) on a home (currently 837 sq ft), kitchen and bathroom bump out, and add an additional bathroom. 

Next, arrange a site walkthrough to pinpoint any additional needs or potential challenges.

He may have to eat those additional expenses if he can't prove he had approval prior to doing it.c.

Recently completed a cash-out refi and want to take that money and buy 2 additional properties (~$200k or less each). 

It is currently a glorified finished attic with little room- Use addition and raise it up and extend it to the side of the home for more finished space and room for deck, washer/dryer room etc- Make the living space as functional as possible with the added sqft- Add outside living structures like deckThis is a fairly wealthily area and I want to maximize my ROIWhat are some things you recommend for a large scale project like this and what are some hurdles ?

If you’re okay with the lack of control, it could Be good for you.A benefit in addition to being passive is that you can invest in whatever markets you’d like.