You will wind up speaking to the commercial loan department so whether it's through your LLC like I do or wether it's in your personal name it won't matter

For example, is there a local building society that typically tracks this info, or does it require calling carpenters, local planning departments etc?

I agree with @David Krulac - hopefully your property is in one of the 2% RTT areas rather than one of the 4% or 5% RTT areas.The imputed property value used to determine the RTT amount can be found by taking the tax assessed value from the tax assessor, and multiplying (or dividing) by the common leveling ratio that the PA Department of Revenue has posted at their website, for the year and month of the transfer (the values in their table change over time).Once you have that value, and the tax rate for that location, you can figure out how much this screw up cost you ;)

Could you manage a department at a company whose workers were of this demographic?

Then, the housekeeping department will bring you as much as you want, without charge.  

Contact the county or local planning department to see if there are any issues with building on the property - bring donuts and make friends as these people will make or break you.If you are unsure of the borders of the property, then have the seller order a professional survey be done.If there is a Department of State Lands or similar in your region then find out about any special delineations on the property.Find out about power.

It would also be simple to produce a buyers list coming from our sales department.

As to the Department of buildings, they work at their own pace and don't seem to care too much otherwise .

@Joseph Renteria, if you've been regularly saving, and already have say $30k saved in an account, you should probably ask your BANK directly: Do they have a COMMERCIAL Lending Department, whose job it is to look more closely at the "deal" you want to buy, rather than your already-owned assets/income?

Further, I am not fond of the town council nor the building department, so I just want to leave that building and town in terms of investments.