If you're talking about just clearing a line with a mechanical roto-rootor or with a water power blast, that might be a quote and a project the PM could handle.

There is not internet in the house, so the system has to be cellular with remote monitoring.

They seemed like they had some inside knowledge and a great system that guarantee results when it comes to income producing properties.

Talk to septic system companies to find out the costs.

This house didn't have a forced air heating and cooling system, so we're putting one in. 

Including a brand new $50,000 roof in 2017Current property taxes $4,377/yearOwner pays water & sewerAs this was a complete renovation there are no historical financials

Some have a stringent screening system that guarantee a first-class tenant.

Main Water shut off not located on  the meter.

The listings online provide different rent breakouts vs the breakouts provided by the listing agent and the listing agent is not very forthcoming in terms of providing rent rolls, leasing information, rental history, or systems information (to calc needed capex reserves). - Also, the bedroom/bathroom breakout varies by listing and doesn’t make sense.

If not, you need to consider the time involved with obtaining estimates, reviews, scheduling, providing access, handling issues that come up (like new water heater required  we remove the entire door and frame for access as they are wider now).