You need to have a plan and do cost simulation and work with the same lender that will benefit you.

Here's another angle :- If interest rate is cheap enough, you don't really have to add more into principal but if rate is above 5%, then it's a good practice- HOWEVER, paying principle down is useful especially IF you want to hold property for certain number of years and plan to sell it (in your case 10 years) ; AND also IF acceleration of the appreciation equity of that place is twice than mortgage rate (eg: if appreciation per monthly is 5k/month and mortgage is 2k, then paying off asset early is GOOD).What I am saying is this:- if your rate is 2% and your location is in Cupertino,CA then definitely adding principal is good- if your rate is 6% and your location is in Cupertino,CA then definitely adding principal is a MUST- if your rate is 5% and your location is in detroit michigan then forget about adding principalit really depends on the market, you can simulate this in excel using amortization calculator to understand what I meant.This is my basis strategy how to payoff 30YFRM in 10-12 years only.

But Chris is correct that the solar companies can run a simulator to get an pretty accurate idea of your production.

For example, 25 years ago, I simulated the long-term impact of investing an additional $100 a month (or whatever).

I started doing some sample simulations of potential properties to get a better understanding of how to analyze a profitable investment and of course doing this as an exercise helps with the learning curve.

Has anybody here used the Real Estate investment simulator at investorheadstart com?

Does anyone have a link to a house simulator; I would like a preview of what my ugly house could possibly look like fixed up.Thanks!!

My other idea was golf simulators.

We've actually developed a simulator which enables us to model discounted cash flows over several possible scenarios ...

I don't like giving free money to the banks haha , I want to simulate 3% amortization table. 5-10 years from now when I sell again, The house has little debts.Cash-flow I will get it from Debt funds anyway ( I become the lender) :)