$12k/year seems high. If you cut out utilities, rent/mortgage, groceries, sewer, water, and income tax is there much left? I have remote property in a place with much higher property tax (California), and the taxes costs me 1/20th of that.
I occasionally toy with the idea of retiring extremely early by pushing my living expenses very low. If I didn't have a job, I would have more time to raise rabbits and grow oats (for feeding rabbits), turnips, beans, etc. But I'm not confident I can drive it low enough for my home sale plus savings to cover everything for the rest of my life and more important the rest of my wife's life. (she'll out live me by decades, if family history is any indication)