That's what I think a fair price is.It does depend on how far it is to the roofing supply store, how far it is for the workers to travel, if there's any rotting wood that needs to be replaced and how busy they are (busier = higher profit).You could buy a couple ladders, a compressor, a 100ft extension cord (14/3), 50 ft of rubber air hose, a roofing nail gun, a caulk tube a couple shingle removers and pick up some day laborers who know how to roof. 

We washed the concrete with a garden hose and chemicals.

Try and also have it close to the rear or front garden hose spicket.If the renter(s) are going to use a small unstable grill or "Cheap" grill it might be a good idea to ban it or require the above.

I give you one example, sometimes I have a though choice when I tried to flip hose, the seller doesn't allow inspection and the house is priced 1 mil (comp is 1.5 mil).

If you have a multi-family property, then you have to figure out how to make the tenants share the responsibility or you hire someone to handle it for them.You have to consider insulation, maintenance of weather stripping on doors and windows, servicing the boiler/furnace, winterizing sprinkler systems, disconnecting garden hoses from hose bibs, and much more.It's very risky to manage rentals from a distance.

I made sure to add an extension hose to the dishwasher and angle it up so that backflow in the future could be somewhat prevented.

Is there any creative lending to take advantage of without getting completely hosed?

Notify your tenants first, of course.Second, does your property have any hose bibs?

Plumber gets there and tightens up the new washer hose just a smidge and all was well.$85 service call for that.

On one of them I verified it was going into the storm sewer by putting a hose into it and then Listening at the sewer grate on the edge of the curb.