They just can't plan their future that well so it's a waste of your time.

But I don't want to waste my time going from bank to bank to see who will offer me a HELOC.

However, once I have an application submitted, I disclose that to future interested parties so they know there's competition and aren't wasting their time.If you deny them because they don't meet your qualifications, then you should send them the letter.

Where does one even begin to find the right people so you don't get screwed or waste time with those unable to actually help.

You do not want to waste anyone's time. 

With that time wasted, my preapproval ended up expiring.

Their kitchens are next to each other separated by a wall.

I.e. they both have pumps to get their waste to the street. 

This seems insane (and wasted expense) for a simple transfer between two trusted parties.

We can fit it in the budget, the numbers still work well, but I'm don't know how impactful it'd be to potential renters and dont want to over improve or waste $12k!