You want a flat fee / fee for service model, not a model that is based on the asset value.If you qualify for the Solo 401k and would have other reasons to take advantage of such a plan like the desire to make higher contributions or other investments, then it might make sense to explore that platform.You don't need the checkbook control of the IRA LLC or a SoloK for a single land asset.  

A "Supply-side" economics model, in a way.  

The benefit of using an open input model like excel is that you can adjust prepayment levels of the loan which if the loan is purchased at a discount will have a direct impact on your IRR.  

That said, real estate investors here usually go for a long term appreciation return due to a break even or even negative cash flow model on a 20-25% downpayment.

You learn so much, and it helps you start to develop what your business model could look like.

I was intrigued but actually I knew nothing about trailer parks so I called in a buddy who owns a few.We go by the site and the trailers range in age from late 1970s to newer 2000s model homes.

In a nutshell that is primarily my business model and works great! 

When you become in bankable in a traditional financing model, you have to start to think creatively!

Some of the things you will want on that summary sheet is:Capital StructureSources & UsesInvestment Attributes -prop name, vintage, risk profile, units, purchase price, exit price, acq date, exit dateUnit MixDebt HighlightReturn ProfileReturn sensitivity to hold period & purchase priceFinancial Summary (by year)Cumulative Return on Investment** all of this info should be already showing somewhere else in your underwriting model and you just have to link it to this new tab so it auto-updates as you change assumptions in your UW model.

I have a bad year model where I take things out to 67%.