Hey Hannah! As a hard money lender, this is how we could handle situations:
Provide a borrower with a pre-approval, just as Justin had mentioned. When you find a property that you are in contract on, or want to check how much the total loan will come out to; we will ask for the Purchase Price, Rehab amount (This can be a rough estimate but will eventually have to be consulted by a GC), After Repair Value, and Exit Strategy.
After gathering some preliminary information about the property and yourself (such as FICO and experience), we are able to provide a quote! Assuming that the deal looks good and the quote checks all of your boxes, we will order an appraisal, collect documents, and start getting all other processes in order to close.
As Riley had mentioned, getting a loan conventionally can take quite a while, which is why some investors prefer (or require) a hard money lender to help on the financing side. Hopefully, some insight on the process helps your understanding. It seems the area in which hard money could help you is in the qualification process since there are fewer, "checks", to get the ball rolling.
Some investors I talk to already have a favorite GC they decide to work with, so maybe, it would benefit you to find a GC that you'd like to work with so you can move faster in the earlier stages if you find yourself in a similar scenario.