Both houses need a new roof that will cost 15k. 

Where I am, the market has been flat and down for a long time.

Had to put a new roof, HVAC, and finish the basement.

Unfortunately, there was a stop work order in place on the property, which the roofing contractor was told by BTC was resolved.  

It's not the best place to invest in real estate, though having said that, I did recently purchase a flat.

You can negotiate a flat fee, or percentage of their profit of any deal. 

It's very simple, here is the header for one sheet:# Of RentalsAddressDate BoughtYear Roof was put onCost of PropertyValue of Property 2017Value of Property 2021TaxInsuranceMortgageMaint/HOAAC FiltersRent Per MonthThen I have another sheet to keep track of any expenses for the year:# Of RentalsAddressCityJanFebMarAprMayEverything is very organized on these two sheets for the CPA every January.

The solar system adds no value to my property for rental purposes, and I may even be ripping up the roof & replacing it in the new year.Beyond sending a nasty letter through my attorney via certified mail, demanding the company come pick up their equipment, am I required to take any further action or fulfill any obligations regarding these contracts?

You can get some estimates from contractors for what they charge for big ticket items like to renovate a bathroom, renovate a kitchen, replace the furnace, replace the roof, etc.All wholesale deals should have free and clear title and you should be able to see the sales agreement before submitting the earnest money deposit.

Doing few roof for single family homes in Houston.