One of the most critical parts of analyzing a BRRRR is having a solid rehab estimate to determine your offer.

Everything you're talking about is absolutely a critical component. 

Home prices have been rising everywhere, amid a critical housing shortage.

The more critical part is that it can include a Deed Restriction to be recorded to preclude sale within either the 30 or 90 day timeframe. 

I like  Ibrahim advice,  i may venture into wholesaling as a cash generator,  there is something to the "Art of the deal" and understanding the criteria of your buyer (s) is critical.

We hear and see deals that are being done all the time by members in the forum with private capital and wanted to pick your brains on the topic.Some quick numbers which might help lead the discussion (based on what we know now):Price: $635,000Taxes: $19,000Units: 21 1 Bedrooms and full kitchen and bathRent Estimates: $400-500 (we are asking for the details on these).What other critical numbers might you be looking for?

For instance, if I'm doing anything mission-critical, like getting a new roof, of course I need a commercial contractor.But what if it's a 'little' job, like installing a fence with a gate around some small area I want to protect?

Wow Bryant, cool new business, and sorry you're having to manage this mess at a critical juncture.   

Once you're past day 45 you're stuck.The first 45 days of an exchange is the most critical time for sure!

That is critical.