Quick math, if you were paying ~$400 per month in oil and now the tenants will just pay direct for natural gas via the utility company, that is $4,800 per year.

So I have to ask, are you at the natural limits of the model?

These are not hands off options but can produce incredible returns (as of this month all our properties have had all our investment extracted and are producing infinite return).  

To kind of piggyback on a lot the other's insights.With a lot of things in real estate, it goes through cycles, and Notes and Tax instruments are no different.In that every couple of years, a guru will hype up the "passive" nature of Notes and Tax investments, and how you can buy properties for "pennies on the dollar!!".

I come from an IT background so it was somewhat second nature for me to try using internet archives. 

It’s natural gas now and I have no idea what hennit was converted.  

The high cap rate mom and pop centers can throw off higher yield but you REALLY have to know what you are doing to extract that value.

Once you have that mentality that you aren't too proud to do anything, find one or two friends who naturally have what you don't, be that money, experience, or moxy, and form an LLC to buy and hold houses.Even if you and your friends get the worst deals in the world and you're only able to afford one property a year, if you simply buy and hold houses, by the time you're 35, you'll have 17 properties bought and rented.At that point, you and your partners can dissolve the business, split the properties, and continue to accumulate properties solo.

The natural thought here is they got a higher offer.

That’s a forced value creation that will far exceed any appreciation you can hope for or any cash flow you could potentially extract from just a a single family home.Plenty of opportunities here: (1) sell the lots to raise cash and pay off your loans on your existing house to get free and clear property for a long term hold, (2) Sell the front house keep the lots for long term appreciation (they will appreciate at the same rate as houses nearby), (3) Trade a lot to a builder to get him to build a small home on the back lot for you at a very low cost, (4) Sell some of these lots with owner financing for cash flow...