Simple bath and kitchen makeover, new laminate floors in common areas, painted all rooms, painted exterior.

I paid off the mortgage and it the rental income is $48,000 per month.The next most important thing you need to be successful is you need to know how to do simple math to know what properties are a good deal.

If its as simple as just asking the lender, then that's great news.

So I can’t find a simple answer as it’s only one piece of puzzle- as supply and demand have huge impacts.Anyway, the good news is if you are really holding for 10-30 yrs, you don’t have to worry about this (too much). 

Very simple question from someone who doesn't know how to start...how would you invest your first $100K? 

Venmo was very simple but the local bank stopped accepting it.

All you need is to change the insurance you have on the property it should be that simple.

Is there a certain percentage that could be good to used for upgrades (simple upgrades vs major projects) or is it just that you have to know specific costs for upgrades? 

I ran a simple spreadsheet evaluation to include the various costs involved with making this work (image attached). 

Move them out and find someone that will pay market rate and be grateful for what you're offering.It's really that simple.