I recently bought a strip center in City of Gray, GA which is basically vacant with only 1 tenant, but the water and sewer bill was around 600$ (the usage was well within the allowed 2000 gallons for the base charge).

Definitely need to understand that 10% of gross rents go to capital expenditures, 10% goes to maintenance, 10% needs to be included for future PM fees, 8.3% needs to be included for vacancy, and then pull all your numbers on the electric, gas, and water that you would be required to cover.  

For example: they may list a water leak as $1000 repair when it may be a $7 shut offInspections on HUD homes are costlier and it some cases not possible in some cases do to the inability to turn on utilities. 

There is a meetup the third Wednesday of each month in Lake Forrest (22722 Lambert Street,  Lake Forest‎ CA, United States, Round Table Pizza).Best of luck  Chris 

However, that would be like going fishing and never casting your line in the water while expecting the fish to jump in the boat.

You might leave a little money on the table but you will be protecting your profits much more than averaging things or taking the lowest guesstimates.

If I could I would turn the power, water, cable and internet off to hopefully rid them of the property sooner.

i.e. 10 years for furnace, 8 for water heater etc.Note that these are not actual numbers for these items just examples.

The key is to not be greedy, but don't leave too much money on the table either.  

It's not a sewer line, it's a 3/4" water supply.