Does anyone have experience rehabbing a fire damaged property?

During the walkthrough there was a huge blue tarp on the roof from water damage of a recent storm.

Same with water and sewer,  you pay water by unit which is around 50/month per unit so you'd be paying 2400/year.Also I noticed you didn't mention any debt servicing so I'm assuming you are paying cash for this property?

Currently I pay the heat and water.

I'm gonna give you some numbers of what I'm expecting from my market:$80k for a 1 bedroom apartment (I'll try to get it for at least $68k)$15k downpayment $5k on renovations $300/400 mortgage $60/100 taxes$30/50 insurance $75/150 HOA$30/50 water--------------Around $700 of total monthly costs Rent should be around $1200Let's say I'm gonna cashflow something between $300 and $500.Let me know what you guys think, if I forgot to consider something or if my numbers are off.Thank you so much!

@Peace Lily the immediate response would be "Why are you planning on damaging my equipment?"

I am currently working on a house on the water  tear down and rebuild  , We have had lots of rain and its also 4 ft above sea level .  

The well is in good shape and up to code and the current guy that is doing the water testing said that he can’t see it going dry but it did then i woule have to connect to the public water system.

After speaking with the seller, who is an 72 year old real estate investor looking to move on to the next chapter of his life, he give me some information about the property: rent roll is $103,000 annually, occupancy is 100% and currently there is a wait list, there is no property management company (he manages the property himself), cap ex, insurance, and taxes are roughly $21,000. the 20 unit complex is split among three building where two building have roofs that are eight years old and one building's roof is 18 but "in perfect condition", each tenant is responsible for their own water, sewer, electricity leaving the seller only responsible for taxes, insurance and upkeep. 

As I understand it, if the MIL was damaged or burned down, we would not be able to rebuild it.