Assuming location and zoning are standard (e.g., on residential block), you need to determine the price per square foot then also find some recent sales on larger lots to see if any adjustments to price per square foot are needed. At the same time, supply and demand are often more important than sales nowadays.
Talk to a pro to be safe!
Good luck!

Keith

The location and zoning would determine the final price. Based on recent sales.

Lucy

Keith,

You could either pay for an appraisal from a licensed appraiser or contact 3 agents in your area and have them provide you with a CMA (comparative market analysis). The price will also depend on the type of zoning the property is.