Please be aware that all national homebuilders, and I would assume solar developers as well, will want enough time in the contract to conduct substantial due diligence, rezone (if needed), and get all required land development permits in place before closing on the land. 

Now you have x% of your original property equity, less cash-out fees and however much you need to pay to service the original loan while you're doing business development. 

Always approach as a developer with a specific usage.  

The city's macroeconomics is looking great - lots of population and job growth due to the booming tech scene and many companies choosing to move and develop here.

I'm an investor and flipper in the city, and I work for a developer focused specifically in Lowell as well.

There are definitely some municipalities that are easier to get along with than others, but all are open to development.

So, if a developer comes along and buys the mobile home park you will lose your entire investment.

Do you plan to further develop the agent side and turn that into a full time thing?

Also, a contractor may not be the best person to develop your scope of work! 

Your development deal will look much like a flip in the eyes of the IRS since it is 6-9 months as well you'll have the short-term side of taxes, not the capital gains taxing on it.