Should I request a special type of water penetration inspection?

what is the water piping, drains, electric, sewer and heating system condition?

Electric, cable/wi-fi, water etc to make it make more sense and also avoid a more aggressive contract.

There are brokers that do have good relationships with all the agency lenders and can help you navigate the waters. 

A few of mine include:Draining outside hoses, and bowling out any irrigationTesting sump pump and removing/draining any hose extensionsCleaning out gutters to avoid ice damsThermostat upgrade to a smart thermostat to conserve energyFurnace cleaning & check upFriendly reminder to tenants on snow removal responsibility :) What's on your list?

You don't want water getting behind the shower walls and rotting wood.  

By winterizing I actually meant draining the water supply lines and filling them with antifreeze.. vs redoing insulation in a crawl space.

It was almost sold, but one week ago, buyer's agent found our house full of water, because of toilet tank leaking during almost 10 days( we live already different state, and our agent worked on listing and selling our home).

I'm baffled by how a property's water bill is so high despite there appearing to be no leak.

However, he is currently paying way below market rent at $1400 (water and garbage included) for a two bedroom/ two bath/ and a garage in Everett, WA.