It varies a lot and depends on the vintage of the property and your tenant base. 

Right now there're some agents trying to sell me the new build homes, but I've run the number, with the current interest rate it's really hard to get a breakeven cashflow in 5 years. 

Get a small inground fiberglass pool.No above ground pool unless you have a mobile home.

Following - I'm based in California

Pay the bill yourself, then reimburse yourself by charging the tenants based on a formula.

I have owned 3 homes in the past that I lived in.

I find that depending on the market $300-500/mo are fairly normal and if compared to what you would pay with a single family home on some utilities, maintenance, and management, it's a good deal.

The one guy I spoke with said they make money only when they sell to potential investors and they only sell new construction homes that are usually pre-leased to buyers (currently they are building in Texas state and Missouri State).

However, this is not specific legal advice to you, just an opinion based on the circumstances described in this thread.  

As investors (buying a home to live in or to house a business we own is DIFFERENT), 90% of sellers will NOT (at least at the present time) accept an offer that makes sense for the investor.