This is really a bad idea. Installing arenas, building barns and adding living units without permits may seem like the easy/ cheap route but think about it first. Non-permitted structures can not be included in an appraisal at re-sale or re-finance time, buyers recognize they might have to tear them out (which costs) and so also don’t value them highly. Know that all the time and money you spend in this direction will not be coming back to you when you re-sell. And you might not know things which are important to design for… like don’t graze, work or stable your horses over a septic system…
Time to Ride?
The first time I brought my horses home, I was shocked at how much less riding I did. Bear in mind, you’ll probably spend a lot more time mending fences and mucking stalls than you will on horseback. If you just love all the time your spend with your horse, you’ll find it incredibly rewarding, even if you’re not riding so much.