@Gayle Melnick
No. In general, it doesn't work. The BRRRR strategy relies on getting the heavy discount during the purchase. Without that, it's hard to get enough equity remaining. Also, since it will be a rental property, you aren't going to rehab it to the top of the market in the same way as if it was a flip for an owner. So, the ARV won't be the same as a top rehab for resale in the area.
Simple example: You buy an average house at $100K, 20% downpayment.
Put $15K into the kitchen and bathrooms. Now it's worth about $115k. You're all in at $80k purchase plus rehab $15k for $95k.
At $115k, your equity is now $20k + $15k, or 30%.
When you go to the bank, they will likely only cash out at 65%, maybe 75%. And, the closing costs on the refi won't make it worth the headache.
You will also find that many banks might only consider the refi at purchase price, not ARV, if within 6 months of purchase. You'll have wait 6 months or more for it to based on ARV. That's another reason why people avoid using a conventional loan. Use cash and it's considered delayed financing and you don't have to wait for the seasoning period.