(If you already have your construction loan in place, you aren't going to have the money figured for the upgrades, so plan accordingly) The biggest thing is that things like this can blow your budget, and your timeline if you don't have a set way to deal with it.

The biggest issues are overloading the dishwasher, washer and dryer, and/or flushing things down the toilet that weren't eaten first.

My biggest concern is the number of days apart from the A-B and B-C closings.

My biggest question is how much do BPs members rehab their long term rentals?

Sounds like a recipe for disaster, but doesn't mean you won't pull it off :) My biggest concern would be disrupting my tenants, but if they are on board and aware of your plans then that might be a non-issue.

Some of the biggest commercial rental units in Boston charge between $50-100 for pet fees per month if they allow pets at all.

I think the biggest question is who will be doing the turnovers between guests.

The biggest help I have had so far in my investing journey has been a solid W2 income to fund my investments and make me look good to bankers and let me access large credit lines.

I think the biggest problem for most flippers is they just don't don't do any tracking at all during their rehab and wait until the end of the year to try to sort through their receipts and calculate profitability. 

The biggest concern for me would be odor.