On large projects like the one you are considering (a big one for "new" investor (your words not mine), we would have zoning, financing and environmental contingencies to mitigate the risk of closing and our earnest money.  

I'm guessing they'll look at sewer, parking, traffic, environmental maybe?

Call an environmental company. 

I'm going to take a stab at summarizing some of the main elements of the proposed regulations given to us by the IRS yesterday.

Many HOs love the stability/comfort of radiant or hydronic heating but hate the baseboard elements taking up valuable wallspace.

If your water heater is a sufficient size, likely one of the two elements is burned out.

Usually that takes place because there might be a serious environmental problem. 

There are two elements of taxable income when selling a rental property:Capital gainDepreciation recaptureDepreciation recapture is the process of "recapturing" prior depreciation taken on the property while it was held as a rental.

@Rob D.I keep recommending my clients have an- Attorney approval- Contractor review- Radon test- Lead based paint test- Asbestos test- Septic inspection- Finance contingency for FHA- $2500 repair expectation for any repairs FHA demands- $1 EMD- Engineers inspection- Furnace inspector- Partner approval- Environmental impact study at sellers expense- Neighbor interview- Plumber inspection- Assignment of contract- Well test- HOA rules approval- Certificate of Compliance acceptance- Marketability of title- Town code review- Survey- Soil testFor some reason they keep complaining they are not getting a response, beat out or end up spending thousands in tests and fees only to lose to some cash buyer when they request a repair.

Also check for any environmental issues: lead, radon, buried oil tanks, old gas tanks, asbestos, meth lab, etc...