I am a worrier by nature and I don't like risk, but frankly, there is risk in everything.So, my current situation is that I have 1 rental, about to refinance back out 30 yaers to go to a positive cash flow, and I am sitting on 60k in cash and a 2002 trans am ws6 with 18k miles that I bought 2 years ago for 20k in minute condition that I'm willing to sell and will sell so I can be sitting on 80k in cash to buy another rental or two.I am an engineer by heart, and so I know that i need to make a business plan, crunch the numbers, and get my business plan all together before I start buying anything. 

If the zoning and lot size allow you to do a split, you can go talk to a civil engineer and ask what it would cost, etc.

I'm an engineer by profession and I got started in real estate investing about 1.5 years ago.

We both have engineering degrees and spent almost 20 years trying to work our way up the corporate ladder because we thought that was what being successful was about. 

I spent six years in the United States and have a degree in Mechanical Engineering.  

I'm an electrical engineer and have worked for some of the big biomedical companies for almost 20 years.  

They are constantly tuning their price algorithms so it does not seem unreasonable to see values jump around now and then.  

I understand that Zillow's algorithms use information from areas that may over-extend the boundaries of the primary area of sale to come up with an estimated sales price.

@Terry Burger , For a "regular" house on a "regular" lot your looking about 7 bucks a foot +/-    For this type of situation I would consult with the municipality, my engineer and my plumber on the EXACT parcel of land I was looking to develop.  

This allows you to borrow all of the payment/transaction history (which is roughly 35% of the weight to your FICO algorithm/score) all the way back to when the card was opened.