I'm considering accepting them if they pay something non-refundable upfront to hold the property.

Have a clear and concise written agreement with contractors Did you work with any real estate professionals (agents, lenders, etc.) that you'd recommend to others?

There would be a lender and then jr participants .

I work for/with a very investor focused lender and they support many of our luxury STR and second home coastal purchases for my client's in Oregon & California and they just waived the appraisal for a $800K purchase!

Generally any multi family purchases 5+ units is considered commercial, and although many lenders offer financing, the down payment requirements will be slightly higher..usually 25-35% depending on the number of doors.  

Has anyone recently had a successful BRRRR and is willing to share their team, including a realtor, general contactor, and lender? 

All Banks & Lenders are different as well as which program you used to buy the home.

Did you work with any real estate professionals (agents, lenders, etc.) that you'd recommend to others?

The lender seeing the appraisal was garbage did not charge me for it.

Check in with @Joseph Chiofalo they're a FHA/VA lender and also have some 100% programs if it fits into the parameters.