I'm curious—what key factors do you look for when considering a new investment?

The key would be to properly line up a plan (Scope of work, contractor, exit numbers)!

You are wasting your time and theirs by running applications when they don't even know if the house will work for them.I recommend you include some of your key qualification criteria in the advertisement.

Is this an out of state turn key?

Scheduling is a key part of staying on top of things, especially regarding follow-ups.

Understanding the Key Differences Between Private and Hard Money: Pros, Cons, and When to Use Each

I think this is key. 

Strategic pricing is key to closing deals quickly.The median time to contract has stretched to 29 days, up 20.8% from last year.

House hacking, live & flip, BRRR, turn-key rentals, syndication deals, etc?

Roof and attic insulation are key factors in controlling the heat load.Commercial HVAC sizing is based on that plus the addition of heat from air supplied from the outside to replace "stale" air indoors - local ordinances often require specified amounts of air replacement - in an occupied space and also from the number and activity of individuals expected to occupy that space.