I’m unsure what kind of notice I need to give them—does it work the same way as residential leases, requiring a 120-day notice?

JC - I just got the app today after coming across it in this discussion and noticed that (although it's not on the mobile app) the desktop website has a tab to upload a csv file to import entries.

I'm noticing that trend and where I was getting confused with things.

I noticed  

I just got a notice from the MD department of assessments & taxation that the value of my property will increase from 120k to 261k , spread out over 3 years equally.This is a ridiculous increase of 118%.

It also makes me wonder how many other issues I just haven't noticed yet will come to haunt me.  

Hardly noticeable.

Then progress to permits and then building.You could also just do it and hope the city doesn't notice, which they probably won't.Your challenge will be getting Certificates of Compliance on the units!

If someone was over during a high consumption month I'd give then a notice/warning for the first month along with some energy consumption tips then tack it onto the rent. 

You will notice on Rommels snout, he has taken a blow.