They want to come back because at some point it means more revenue for them. 

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 ;)

We charge $2 per load, which is the max the machine coin slot can accommodate.I'm not sure it would be as profitable on a smaller building, but might be worth it if you could buy used machines.We're thinking of adding a vending machine down in the laundry room as another revenue source. 

Can you add $50/mo for "covered parking/storage" to increase revenue.

Plus you create a nice home for somebody to live in, increase tax revenues, and better the community.

Total home sales volume was up 21% with $337 million recorded compared to $279 million last August.Through the first eight months of this year, the number of home sales recorded are up 10%, average home sales prices are up 4%, and total home sales revenue is up 14% from the same period in 2016.

Typically, that would be 8-10% of revenue.   

The covert lot I ran in Raleigh (up to 22 spaces, but we were never close to full) for our members as a 'revenue enhancer' was unattended, automated, easy to manage (handled a few calls a semester), and not a burden.

That's good.You should also allow for vacancy in your revenue projections.  

Impound fees are $150+, they don't like it when they get popped twice in a day or so.I also like the parking leasing agreement as it can introduce more fees that allows us to collect more revenue, such as a late fee on the parking agreement, car detailing services, etc.