Bring an air compressor with fittings, hook it up, go around listening for air leaks.

The hard part will be finding the leak in that case.

Every item from a roof to a dryer has a depreciation schedule that is fairly standard.One income property is really easy to track if you associate it with one bank account. 

I ended up replacing a tar roof on front because it looked too shabby after the full rehab.

After swallowing some lumps thanks to one thread I posted back in April, I should (crossed fingers, no blown furnaces or sheard off roofs) be in a good position next year to reinvest.This is hopefully not a beat the dead horse, "where is the best cash flow in X" post, more of a strategy question for anyone who knows the market in CT.Here is what my limited knowledge/intuition tells me: Waterbury, Bridgeport, parts of Hartford cash flow best because of the inherent risk, lower fairfield county cash flows worst (today) because of NYC effect on price/rent, and there is an in-between SOMEWHERE.I think that somewhere is in the central part of the state between route 8 and 91 north of new haven, east of waterbury.

You need a place to live, so find something that provides a roof over your head and the potential for a return.I know a guy that buys fixer-uppers, lives in them for a couple years, renovates along the way, then sells for a profit.

Have a 1960s 30 unit single story motel where we are coming up on some end of life issues: the cast iron plumbing is disintegrating underneath bathrooms, radiators are starting to leak, electrical is in poor condition, and just today, discovered significant termite damage affecting multiple rooms.

What about the plumber that stops a flooding leak on a Sunday morning or the HVAC tech that fixes a furnace under a crawl space in the middle of a freezing night?

Quote from @James Nix: It's obviously a leak and the most likely culprit is the toilet.

They are willing to sell, but it would need to be at a good price because it needs things that my side already had done (roof update, windows).