Look into the permit side of this idea. Many properties are not permitted to have two residences on the same parcel. I know someone who had to pull the demolition permit on the old house before he was allowed to get the building permits for his new house. Then, he was only granted temporary occupancy until the previous house was removed. In my area, outbuildings are not permitted to have water

Building new is expensive, especially if you have to bring in utilities and build access roads. Try pricing a well and septic system before you decide how affordable the cheap cabin really is. Plus, remember when you put in the well, you are dealing with somewhat of an unknown versus an existing well which you can test for water quality and flow rates. Check into water rights and make sure you can drill a well and what rights you have to use the water for agricultural purposes

You might be able to find a location which had a house or mobile home at one time with existing access and services. If you can find an old mobile home, you might find it cheaper to buy than a property without buildings

Having enough land to live your lifestyle would be a dream for many people.

All I need is a few acres, just can't afford the 5 bedroom, 4 bath homes new homes that come on them!