@Alden Cleveland Good question which many beginner really get confused. My forum friend @Tony Castronovo did clarify lots of things on his reply. Let me touch on it more as wel.
I use BRRRR strategy for my investment and for my investors a lot. But the BRRRR strategy which BiggerPockets teaches is more on the side of using HML whereas I suggest them to use their Cash. There are lot of reasons for that and obviously many cannot afford to put full Cash.
As per LTC and LTV, let me share with an real example. I just bought a property Jul15th through wholesaler in Sugar land for $193k using private lender instead of my cash. Because, I don't have to do cash out refi instead I can do straight refi. During this COVID situation cash Refi has been put on hold by many lenders. Also I have a good relationship with my private lender who lenders for me really cheap compared to other private lenders and HML. So I like the OPM :-)
He paid full cash for the purchase price, I didn't put anything. That property needed nothing at this time. Just turned around put that property in market for rent now. You can check it out, 9710 Fieldblook Lane, Sugar land. At the same time, I applied for refinance. Appraisal just came back yesterday for $235k which I expected. With 235k appraisal, 75% LTV would be $176,250 which would be max loan amount. I had to put remaining amount to pay my Private lender, plus interest for 2 months and closing cost which might total around $24k is my expectation. Instead compared to LTC if I bought the property right from the market for $235k, I would have to put $58k. I saved almost $34k down payment by using the built in equity int the house and reduced my out of pocket.
That's the true value of buying properties with built in equity using Cash or HML and use that equity to reduce your out of pocket and rare cases you don't have to put anything down and just closing cost. That's why people say, you can get full money back, yes it's possible but rare occasions.
Just to summarize, you don't have to stuck with the same BRRRR strategy, you can change it for your need and make it work if it make sense. If you have HM lender who you can use sure go ahead and their cost would need to added as part of the numbers to make sense.
Hope this helps.