If it is 1 water meter, that would be logical you need to pay the full impact fee so water can be tapped.

Turnkey is a marketing word. 

If so, Eagle Rock is probably good for you.

So if I was dealing with a seller who was insisting on handling the transfer this way, I would be wondering what the seller is trying to hide... and I would figure it out.

MLS is priced aggressively and nets no profit (flip) or cash-flow (BRRRR) unless you low ball. 

House hacking is a great way to get into real estate.

However, the approval process can be pretty tough, especially if you're working on a larger project or have a shorter timeline.Private Lenders: These options are typically much faster and more flexible, which is key when scaling development projects.

Most serious and qualified tenants are searching on the major 3rd party platforms you mentioned + realtor.com, redfin, and a few others.Apartments.com & homes.com are owned by the same company and may offer some additional marketing options.Another strategy to consider here is social media - video marketing.

This is a strategy I use for myself and all my clients. 

You won't get much more than what is justified by the comparables.