You can't always charge whatever you want.

And some unexpected costs (e.g. had to replace a lot of doors I didn't think about).

I paid to have that done and did not charge for it. 

There are always unexpected delays.

The only reason I say this is because even if you base your profit based on the MOST conservative numbers, there are always some sort of unexpected incidents that will arise throughout the process, and there needs to be some sort of reserve capital set aside for that.

@Joe P.Yes, a dealer can use the installment sale with unimproved residential lots, as long as he/she elects to have interest charged under IRC Sec 453(l)(3)."

What do they charge? 

They will also charge you to have an inspection by a 3rd party to make sure the work is done.

It depends on the state laws because if you're in a state that the charging order is not the only remedy in a lawsuit then your other assets can be in jeopardy that's why some people have Nevada, Wyoming, and Ohio LLCs even though they don't live that state because those LLCs provide the most asset protection. 

.- Water/ Sewer - Should be able to charge back to tenants.- Interest rate - Feds raised rates again, so might be tough to find a non owner occupied (assumed due to your location) conventional loan @ 5%.- Confirm property taxes on the county website.Feel free to PM me if you have questions.