How did you aquire your house or did you build it? What do you have as proof of ownership of the house, is it a manufactured or mobile home. Do you have a lease on the land or an option. It might be possible to sell as a TIC or contract of sale if you can prove ownership to something.

If you have no deed you have no proof of ownership. The value is one thing as-is, and another subdivided. It can take many thousands of dollars and months or years to get a subdivision approved. There is a lot of work and there can be a lot of risk involved.