A 1500sq.ft. 3bed/2bath next to a top-notch school will rent for more than a comparable home next to the train tracks, but they both may be cheaper than the house with mountain views, year-round creek, and horse corral.You need to find comparables based on current condition and improved condition, if possible.

@John BurgThe best resource is straight from the horse's mouth. 

If not, then, why are you thinking of putting the Cart before the Horse?

Anything from an appraiser is horse apples. 

We want to pay off our debt (car/credit cards/student loans/etc), and we also want to build a horse barn with living quarters on our property.

Here are some ideas I thought of : Horse rentals Trailer/ commercial/ semi trucks rentals Anything else ?

ideas i was thinking about are: horse stall rentals on property semi truck / trailer space rentals.any other ideas ?? 

However, before putting the cart before the horse what would be the best financing options? 

I am not an equity investor, I tell people my horse eats $20 bills daily, so equity doesn't work, I need cash. 

Hold on to your horses.