I believe this is why policy-makers on both sides of the political aisle are starting to see the promise that renewables offer over traditional forms of energy, which are becoming increasingly expensive for the government to continue propping up and bailing out.  

I would consider asking a slightly higher interest rate than market, because you are offering financing for a buyer that may not qualify for a traditional loan.

Multifamily real estate has traditionally been a stable asset class, and the Washington D.C. metro has traditionally been a stable market area, making the two together a good safe bet, especially for anyone with a long-term view of their investing strategy.

If you are self employed with no full time employees then you should consider a Solo 401k for your traditional funds and no UBIT on leveraged real estate. 

For us in the seller financed note investing world, we are often looking to find value in a deal that fell outside of a traditional banker's lending box. 

If you're purchasing a single family home you can use traditional financing like you probably did on your house or you can do a commercial loan.

Inconsistent Cash FlowUnlike traditional jobs, real estate doesn’t provide steady paychecks.

If not for you and you prefer the traditional route, I would explore potential "up and coming" markets such as Acworth, Cartersville, and Douglasville, where the price-to-rent ratio is a little more favorable, and growth is apparent.

Emphasize how this arrangement could work to their benefit, offering steady income, avoiding a traditional sale process, and giving them the freedom to move forward with their plans such as buying that sailboat and sailing around the world.If they ultimately decide they’re not interested in selling, you’re still in a great position to continue your search and buy your own property in the near future.

(For context, it's a 2700 sf 4 bd 3 bath house in an upscale Northern California suburb.)Kitchen A: Traditional, features a 48 in fridge, 36 in cooktop, window sink (no view), pantry.Kitchen B: Designer, features a 60 in fridge, 48 in range, large kitchen window (no view), sink facing living/dining room; unfortunately no pantryKitchen C: A Little Bit of Both, features a 48 in fridge, 48 in range, sink facing living/dining room, pantry, unfortunately there's no window.Total countertop space is roughly the same (22 ft)  in all three layouts.