You might consider a larger deposit and state in the lease that minor maintenance issues and repairs needed due to being damaged are the company's responsibility.  

If you get under contract for 30,000 and you mark it up to 40,000 if somebody is interested into that $40,000 then what you will do is say “You are interested in this property, give us a deposit for a $1000, we’ll put it in an escrow at the title company.”

56k Minus 30% pads (mgmt maint vac) Leaves ~40Minus 14 costsLeaves 26Minus 100/mo/doorLeaves ~17Divide by 12...math for 6.5% 20 yr loanI would value the property between 189 ( 20%equity) and 220( after down PMT)Does this match the offer

@kevin fox statement matches my reality.  

If I had to make a bullish argument for inflation adjusted home prices rising it would be due to capital flows rotating out of cash to avoid paying interest on deposits or just chasing yield because negative interest rates pulling down returns even lower.  

Perhaps the buyers will change their minds, perhaps they won't feel you gave them exactly what they wanted, perhaps the market will drop, and if you've done renovations that aren't marketable to a wide segment of buyers, you may have to do a new renovation to resell.If you do move forward as the "builder," I highly recommend you work with a knowledgeable attorney to get a rock-solid contract, get a big deposit, and make sure the numbers work in your favor at all points in the process.

We have a very nice duplex there in a "good" part of the 19th Ward and had a very difficult time renting it to a qualified tenant (someone who didn't smoke, without evictions, could pay a security deposit, etc), let alone a student.

Taxes aren't really a closing cost (except maybe for a buyer getting a conventional mortgage that requires an initial escrow deposit).I'd expect that most wholesaler contracts would not generally say the buyer would pay the pro-rated amount of real estate taxes owed.  

IE basically the turn key markets I would also want a deposit that I could draw on for maintenance calls. and that the owner would need to replenish.. what happens is you have a sewer leak.. tenant is in a world of hurt.. owner is gone on vacation and won't communicate.. bill is 1k.. no money to pay for it.. so PM not wanting to lose a renter and doing the best they can fronts the 1k..

All other terms to remain the sameOnce we signed, we submitted our earnest money deposit into this specific escrow company.