I couldn't find the listing but would be interesting to see the specs/price for comparison.Anyway on the architect,  I'd say both talk to one before any specific property just to get a better idea both in terms of attributes of the home to look for,  and also to get any ideas of difficulties/quirks with the particular jurisdiction you are looking at,  and then after the purchase (assuming you are trying to do everything above the board, permitted, etc. 

I'm an architect, so my primary business is in the rehab / remodel /additions / new construction market.

To do a build or large remodel was costing $50k and up (to the local Govt) on my projects,Add in $30k for the Architect, $5k Engineering, $15k Designer and the customer was at $100,000 before I pulled out my hammer.... 

Find a good competent  framing guy, will get a much better estimate in a lot less time then an engineer or an architect.

That said,  now that we have been in 'housing crisis' mode for a few more years,  and more construction and architect types are available due to economic slowdown,   it might be worth revisiting.   

Would you consider flooring as most prominent thing to tenant proof first?  

The fastest and low-cost way to get started in real estate:Call prominent real estate investors in your market can contact them and ask them if they will mentor you in exchange for sourcing deals.

@Becky Lai I am an architect in Austin and know the regulations well.

We are architects and have inspected the property, deed restrictions etc. 

I will defer to Jim and his expertise as an architect.