The already-constructed home is one point on the base of the triangle, and the other plots comprise the rest.

I certainly have my bias and would love to sit down with you if you are in the Austin area or possibly a phone call.  

If your brother is an E5 or higher he can live off base.  

Just about everywhere in the US uses some version of IRC for its base code and then makes some changes to that as they feel necessary for their locality.

Yeah, it is based on the state's regulators.

Note: We do 50+ investment property loans a month and the most important thing I tell BUYERS of properties being sold as or soon to be STR is make sure you are paying the market price per square foot and do NOT buy based on income approach/CAP rate.

You GOTTA use WIDE-angel photos. many phones have great features for this now, or there is app's for it, or lenses, lens adapters. get something, anything, or buy a new phone that does it.

They want to pick up the phone and call or text and get an instant response from their cleaners.

A good ol fashion phone call or house visit would probably solve your problem. 

Renegotiating some utility contracts (garbage and removing some on site office paid internet/phone bills) 5.