I left them off and tried all outlets, lights and whatnot and everything seems to be working.

Essentially, the plumber open a drain plug outside the house, and blocks the outlet line outside the house.2.

Needs a little upgrade like replacement storm windows and electric outlets need to be upgraded.

Some older homes have 1 outlet per room.

Because we've figured this out! Let

What kind of person that actually knows what they're talking about is going to sit here and write The Book of Jared just to help you out?Let's

I am not overly-handy (I never owned tools until I bought a duplex) - so far I've done basic electric (installing an outlet, adding a junction box, putting in receptacles, removing breakers, fixing a 3 way switch -- all things an electrician wouldn't touch -- or would charge a couple hundred bucks to do, cost me about 7 dollars - literally), replaced an exterior door, removed rotten siding and put up new siding along with replacing the plywood behind it, re-built the rotten framing of a garage wall, installed a ceiling fan, and just about a thousand other things along the way.

We replaced all the floors with LVP, replaced every outlet, light switch, and light fixture (finding some serious fire hazards along the way).

So if a light doesn't work, I'll check the outlets close by to see if those work. 

For example, things like underground outlets are to be expected in older homes.Good luck.