When gas lines were two hours looong and you weren't allowed in that line except every other day.

If the water heater is leaking one cup a minute and going down the drain, they can shut it off or monitor it until Monday.

If you get to a closing and the borrowers refuse to sign or the mortgage doesn't close, you don't get paid even though you have paid for the gas, time, paper, toner, and other expenses.

A leak is not something to take lightly and for her to ghost you is incredibly ...

So currently the neighbors grey water mostly goes in my driveway, and there appears to be what used to be a toilet that might be leaking sewage in the basement.The floor drains have collection of water.   

You need proper egress even to call it a bedroom so once you start venting cooking, lining gas, and doing plumbing, the town will be very tough and as I said, unlikely to want a single-family to become a multi.

In my area the water company offers to forgive excess usage if it was caused by a leak.

Remove old chimneys that leak, and repair roof, assuming they are used anymore.13.

For example let’s say in your market a water heater replacement costs $1k (my market is ~$1500 if using license plumber but our water heaters are different and more costly) and last an average of 12 years (our actual data going back almost 50 years places average lifespan just under that for gas water heaters).  

We must not forget the impact of gas prices, post hurricane Katrina.