Help him purchase another home Subject to that existing mortgage. 

I seriously looked into purchasing a few years back in Valencia but decided ultimately the US had more potential.

Purchase price: $145,000 Cash invested: $60,000 Fully renovated 4-5 bedroom ranch on 3.3 acres.

I have an opportunity to purchase a mixed use property that seller is open to using partial seller finance.

Purchase price: $105,000 Cash invested: $90,000 Property needed some serious rehab, from trees roots destroying the basement walls, to plumbing, electrical, to roofing, landscape.

I have recently started writing down addresses of run down or abandoned properties that I would like to purchase, but I only have the owner's name.

Or what are other ways I can access this equity to purchase?  

Quote from @Anthony Maffei: I purchased a two-family property in 2017 and now have around $500K in positive equity.

Quote from @Nick Cooper: I’m looking to purchase my second long term rental and I’m wanting to know if 20% down would be possible with an investment property as I’ve been told 25% is minimum. 

Did I just not do the math right on my purchase?