Changed out all water fixtures to low flow, and made some major insulation improvements that were 90% subsidized by MassSave.

New floors, paint, exterior paint, HVAC, countertops, fixtures, etc What was the outcome?

New water heater, garage door, paint. cleared out a lot of over-grown brush from fence line, French drains, some new fixtures.

Ideally (and probably by code), there should be a shutoff for each fixture anyway, that way, if one fixture starts leaking you can shut off the lone fixture and not have to shut down an entire unit or building.

Then we had some snow & I got billed $160 because she needed someone to shovel, I later found out from a tenant that the tenant actually shoveled for free & said he seen "her guy" come all he did was throw a red solo cup full of salt on the steps.This is all 5 months into ownership and use of this management company. 2 weeks left til new management takes over & I cant wait.

Assuming it was operating properly at move in, and dependent on exactly what your Rental Agreement states with regard to plumbing stoppages and/or proper use of fixtures and appliances, yes, you should be able to deduct your actual cost to make it operational.

It mostly depends on your budget but doors are like fixtures.

How does this work with the CUP for the new owners? 

I forgot to mention I would be willing to buy you a cup of Starbucks coffee to briefly meet up and chat.Thank you!

I had more than one strip the house take everything  out of it all cabinets lighting plumbing fixtures etc.. so that would be rare but it did happen.