Land may be eligible for special valuation and assessment when it is used for agricultural, horticultural, forest or open space. You need to have at least five acres or more. Forest needs at least 20 acres. The applicant must furnish, upon request of the local assessing officer, proof of all prerequisites to use valuation and assessment, such as proof of ownership, description, areas, uses, and production. Any change in acres, zoning or change in use will be subject to a five year roll back tax.