@Jordan MoorheadIf you are simply looking to make pretax contributions and solely invest in equities, then a big box company like Fidelity Investments or Schwab may be your best bet. 

CoStar is a good source for most research pertaining to Commercial Real Estate.

There can certainly be increased liability, potentially higher operating costs (keep in mind that some private systems can actually be cheaper than municipal systems, especially if bill backs are implemented) and an increased management burden associated with operating private utilities but I feel many investors immediately eliminate MHP investment opportunities from consideration due to the sole fact that they’re running on private utilities.  

If he doesn't want to bind you on other properties, we have a "Non-Exclusive Buyer Broker Agreement" that does not require you to pay the agent if you source a property somewhere else. 

.- For pass through businesses (Sole prop, LLC, S-Corp, Partnerships), up to a 20% deduction is available for qualified business income.  

There is probably a clause titled "Defaults and Remedies" In my area contracts typically say if the buyer defaults the seller's sole recourse is to keep the EMD as liquidated damages. 

Here is Erie county, as of May 2018, it is illegal to discriminate based on source of income which includes section 8.

I have a seller who is the sole heir to a property who’s OOR includes his recently deceased mother, and a great grandmother.

The FHA says that examples of such problems include but are not limited to the following: Missing handrailsCracked or damaged exit doors that are otherwise operableCracked window glassDefective paint surfaces in homes constructed post-1978 (because of lead paint hazards)Minor plumbing leaks (such as dripping faucets)Defective floor finishes or coverings (worn through the finish, badly soiled carpeting)Evidence of previous (non-active) wood-destroying insect/organism damage where there is no evidence of unrepaired structural damageRotten or worn-out counter topsDamaged plaster, sheetrock or other wall and ceiling materials in homes constructed post-1978Poor workmanshipTrip hazards (cracked or partially heaving sidewalks, poorly installed carpeting)Crawl spaces with debris and trashLack of an all-weather driveway surface=================There are many areas, however, where the FHA does require problems to be remedied in order for the sale to close.Electrical and Heating The electrical box should not have any frayed or exposed wires.All habitable rooms must have a functioning heat source (except in a few select cities with mild winters).Roofs and Attics The roofing must keep moisture out.The roofing must be expected to last for at least two more years.The appraiser must inspect the attic for evidence of possible roof problems.The roof cannot have more than three layers of roofing.If the inspection reveals the need for roof repairs and the roof already has three or more layers of roofing, the FHA requires a new roof.Water HeatersThe water heater must meet local building codes and must convey with the property.Hazards and NuisancesA number of conditions fall under this category.

Another thing to consider is you can purchase a thermostat controlled plug/switch that can alleviate anyone having to switch on and off the heat source.