Zillow doesn't have info because there are not enough sales or rentals in the area for their algorithms to calculate them.Why aren't there enough sales?

In any case, BP posts rank high in search engines and I can't think of anything this thread can do for his business if someone does even a modicum of due diligence. 

The slope cracks are definitely concerning, but they may be better evaluated by a geotechnical engineer if you want peace of mind.

Putting some of your $300k toward surveys, engineering, and permits to get the property entitled could bump the value significantly without taking on construction risk.If you want to go bigger, a joint venture with a developer lets you bring the land and some capital while they handle the build, giving you a share of those $1.2M–$1.5M sales.

Start with your budget and then reverse engineer what neighborhoods make sense for your buying criteria.

Your thoughts become reality - and I don't mean that spiritual in any way, I am an engineer.

I personally use Engineered Tax Services.

You're right that true occupancy limits are often based on design factors like exits and fire egress, not just square footage.If you haven’t already, I’d suggest talking to a licensed fire protection engineer or a code consultant.

Hunter gatherer, farmer, horse, iron age, steam engine, auto, computer, etc. 

@Ronald Rohde You can lend on the asset, normally banks will request engineering reports showing the depletion rates of the wells.