If you were a company and this was an expansion project, you would take the additional future income of the project and convert it into a present value by discounting the future cash flows with a risk-appropriate discount rate (which should be your average equity returns).I did that and to simplify things, I assumed your equity returns are 10% and you will get the additional rent and savings on gas (I assumed $100 per month) for eternity.Your annual incremental cash flow is $22,800; (monthly: $1800 in additional rent + $100 in savings).Turning that into a present value, you divide the annual amount by the discount rate.

@Scott Wolf yes I shall be residing in one of the apartments, that rent was just the number I'm projecting for the future.

I use the annual average utility costs and factor it in the rent. 

Is your park overnight, week to week, months, annual?

The annual cash flow should average to about $34,600 per year.

You gave the example of your aunt giving you 100,000-well she would have to have an annual income of 1.2 million in order to give all of that to you in exchange of securities in your REIT.

As I get older I might slow down some and re-balance my time for volume of transactions I want to work on annually.   

However, elder brother 1 is adamant that he wants to cash out soon.Comps around the area generally pay about 3 - 4.5% of the gross annual rental yield for similar properties.

Annually, I'm stunned by the number of cutoff notices and relatively brand new leases I see.  

Might as well try to get everyday you can out of these by continuing to do annual servicing and frequent filter changes.