@Katrina B.
The first key is to work with an experienced investment broker. My broker estimated that the property would be worth $135 - $140k after rehab and he was spot on.
I purchased the home in late March 2020. One of my loans was from a company called Lightstream - an online loan company that offers large unsecured loans. I applied for $100k and got approved for $65k. My payments for that loan were $613.52/month.
The second loan was a $25,000 private loan for which I paid 10% interest-only based on a yearly calendar plus a 2% loan fee. So $500 for the loan plus monthly payments of $208.33.
Construction started in April 2020 and was finished by mid-May. We had a tenant in paying $1,350/month starting in June. My PM takes the first months' rent as part of his fee, so starting in July I had income from the property that could be used against those payments.
I was worried about this property because the offer was accepted at the end of February 2020 and in March things started to go crazy with COVID. I almost backed out of the deal, but I had $8k in as earnest money and I would have lost it. Also, in talking with my broker, he said I stood to lose more money by backing out, which helped to put the situation in perspective.
Even if the property hadn't appraised as high as it did, I still would have been able to refinance and it pay back my loans, I just wouldn't have received my own investment back.
Also, if the market dropped, I could have just kept paying on those loans and waited for the market to pick up. That's probably my favorite part about BRRRR - as long as you buy right, there are multiple exit strategies.
I hope that helps!