Normal additions like what you're trying to get quotes are from 120-200/sf out the door, at 200/sf, you're in the high part, that's 80k, allowances for extra ordinary fixtures shouldn't be above 5k.

Here are some of details...5 Acres LotIn middle of other Residential DevelopmentLand Developer is interested in development, looking for investor to buyGrowing area in DFW

I think what I've mentioned are all things that will help you "learn" your market but I know there's a lot more that can be done and a lot more detailed and exact info to really learn your market as well as more effective ways so I'm looking forward to reading more responses from the other pro's much smarter than me.

Send me a DM and I can get you the details.

Can you give any more details on the contract?

If you feel comfortable, share some details and numbers.  

The original closing date in May was missed and I was told the buyer was asking for 300-400K in "extras" and we were negotiating with them.  

@William R. would you mind sharing the details of your first BRRRR refi?  

Yes It is there, however it is not as detailed as my initial try.

You could also purchase an extra General Liability Protection as well to offset any concerns you have about possible liability.