Biggest mistake I made was not keeping 50 or so more of the 500 I flipped, cost me millions, All the best  My last 3 multi families 2429 nw 81 3/2+ 3/2 purchased at 385 October 2441 nw 81  3/2+ 3/2 purchased at 400 October 441 nw 44th 3/2+2/1 purchased at 280 August again there’s deals , you just have to look.

My lender seems to have done a little mistake and my father who is co-signing was never told he has to be down here for the signing which was suppose to happen today at 1:00 and it cannot happen without a wet signature from him.

In retrospect, did I overpay or make a mistake with the purchase?

Problem: Alignment - this is hands down the most common mistake that I see.

I edge my odds by not allowing 1) last minute check-ins (must be at least 2 days in advance) 2) No 1 night stays (eliminates partiers) 3) Must have previous good reviews.These will vette 99% of your guests adequately....

The restrictions, requirements and timelines on these are very specific and one mistake can be very costly. 

They aren't because 99% of the home buyers and sellers need an agent to avoid costly mistakes. 

Often times when a builder/buyer moves too fast, or is too busy and overlooks a key piece of due diligence, the unethical ones will try the "scorched earth" method and blame everyone but themselves, even when they know it was their own mistake, and they'll see if they can scare you, the seller, the title company et al into paying damages/fixing their problem. 

Can't allow mistakes here.I am told & believe that the "SubTo Community" is Videos and "group think" with NO "One on One" training,  meaning if you have a question, you can ask neophytes who give their opinion, but not based on experience.

As soon as interest rates or your personal situation are favorable you can then refinance at any time and eliminate the hard money lender.