It's also never been vacant (it's probably under-rented, but I didn't know any better at the time) and we have around $40,000 in equity in it, plus the cashflow we've made during the rental period, along with the lown-paydown, etc.

I'm in a similar position, though with fewer rentals. 

@Edward Rhoads has a good point about their classification practices when it comes to adjunct positions as well. 

I have about 3k in Stocks I could sell to help pay for this place and I have about 10k in equity in my house I could use if I absolutely needed to.

I have about 3k in Stocks I could sell to help pay for this place and I have about 10k in equity in my house I could use if I absolutely needed to.

@Michael J.I agree with @Steve Vaughan take the money you can make doing the day JOBThis could be 4 down-payments on cash-flow positive rentals.  

Now 3yrs later, the son of the deceased sister who had power of attorney for his mother (she left no will just a supposed request on her death bed that the house be sold) wants to extract the equity out of the house.

This won't help in your decision of whether to pull equity out of your current property, but might help with how you use that cash if you do.I was looking at a SFH I think I can get for about 70k, that's pretty much in move-in condition.

For example, if we convert to condo, each shareholder will technically receive a buyout for their shares and in return receive ownership to a unit - this will cause capital gains to be realized for those shareholders who have equity.  

Mix in a blended rate of equity created by tenant, tax breaks and appreciation, then your return is much higher.