And having a natural water source is going to compound that issue. 

I'm really interested in the BRRRR method, because you can compound your portfolio so quickly. 

It looks like the mortgage calculation formula in excel assumes monthly compounding, but in Canada, the mortgage is compounded semi-anually.

Roy, followed this through three forum posts, LOL.I'm a fish out of water as to mortgages or requirement out of the country, in your neck of the woods.Basically, other posts cover most of this on BP.You probably have a mortgage, look at it as to form and content for your note.The costs involved should be minimal, filing fees are a few dollars a page here, I doubt any second here could rack up a hundred dollars in costs, not counting an attorney fee.As to terms, here we can offset payments, allow accrual of interest and such on loans not cobered by our SAFE Act.If you want to piggyback interest, it's better to have a higher rate with an obligation to pay a lower amount which would allow the remaining interest to compound if simple interest.Really need more information as to what you want to do or how you want payments to be paid or received to suggest details.But again, you need to take all this to an attorney up there, what I do or suggest may not be applicable. :)

I have two houses side by side we call "the compound".

BK can either be a true hardship or underlying work ethic and financial mismanagement decisions that have compounded through his life and will not go away simply because of the BK.If he likes working for the investment company and learns then they might take a chance on him and partner on a deal.I don't see anyone giving him a loan in his current situation for investment purposes.

It gives you more time to enjoy the compounding effects of REI once you get started.Take this time to educate yourself the right way, meet local investors for some insight, learn your local market etc.

Few stock market portfolios will accomplish that, as you would generally need to sell assets to create distributable cash.If the cash flow from your other properties will support you, then you may not need to take distributions of the income from real property, and can continue to re-invest that capital and achieve compounding to continue to grow your IRA.  

You have the advantage of time and compounding, so even if you just add 1-2 properties a year to your portfolio, you will have a very substantial net worth by the time you are 36, and this will allow you to take on even bigger projects without sharing with anyone (other than investors, if you need/want them).  

.- If you want to factor in your equity/principal paydown to ROI, you can do a return on equity (ROE) analysis:ROE = Cashflow / Equity (again, typically over standard period, like one year)- I also like using IRR to model long-term holds -- this number is typically more relevant to what landlords are trying to accomplish (compounded returns vs simple returns and factoring in when the money goes in and comes out).