If the "buyer" (the wholesaler) didn't complete the contract in good faith, then there shouldn't be any reason you can't list the house for sale.

That’s a 6.4% increase.

Remember to consider the equity your tenant is building for you when you compare rent vs sale.

Financing: I have about $1.3M to deploy right now and will have additional ~$700K (sale of primary home) to deploy in 3 years (total $2M). 

CA for instance has hundreds of thousands of paper lots that were created between about 1900 and 1935. these paper lots get sold at tax sale all the time and its where a lot of the land geek type of players toil. 

If yes, I sell that stock and use the loss to offset the capital gains I will have from the sale of my ESPP shares.If you really don't WANT to sell anything else in your portfolio (that will cause a loss) you could do a 'wash sale'.

Maybe they will sell, but they want to live there for another 6 months or pick their ideal sale date.

the answer i'm giving is based on the assumption that you do not want to / can not float the negative cashflow any longer. and note: even if appreciation / debt paydown / tax benefits strongly outweighed the negative cashflow, most investors wouldn't want to / couldn't float that. so that said, i say SELL. you have just over a million dollars in equity (minus transactional costs when you sell), and you could do a 1031 exchange into a ~4 million dollar CASHFLOWING property. i invest long distance into value-add multifamily on the west side of chicago. gearing up for my next deal right now. in that price range you could easily get a value-add multifamily with potential to cashflow 15k/mo+++ (up to 40k/mo) once it reaches its full potential. it sounds like you're in markets that are probably strong for appreciation and weak for cashflow (with the long term rental strategy). if cashflow is your goal, 1031 into value-add multifamily in a higher-cashflow area. don't let having to pay commissions during the sale stop you. you're already losing so much annually; you have to stop the bleeding at some point. also note that right now, with the way these two properties are losing money, that might negatively affect your borrowing power when you go to buy the family home. feel free to dm me if i can help in any way!

I've searched and cannot find a website that will show days on market and a rent amount (per sqft or beds/baths) and whether they are increasing/decreasing, etc... 

Since as inventory of rental options decrease, the demand for those that effectively operate as AirBnB's should theoretically increase.