Size Of Land Area: This will be mostly determined by what your short- and long-term goals and budget. If you wish to acquire a large enough land area to qualify for Ag Exemption Tax Credits. Typically, you need a minimum of 6 acres total if a homestead dwelling will be on the same 6 acres. Each county in Texas can have different minimum requirements needed to be met and an approved plan for such by to receive the Ag Land Assessment Value. If the property already has the Ag Land Assessment Value in place you can benefit from it from the time you purchase but you must make sure it transfers over to you. Plus you will need to meet with appropriate county officials to get the continuation of, or modified plan approved prior to December 31st. If it does not already have the Ag Land Assessment Exemption in place and approved, it takes 5 years before the land can qualify, be approved, and receive the new Ag Assessment. Check out this website for some more details on TEXAS AG EXEMPTION DETAILS: Click Here For Texas Ag Exemption Details If don't want that much land or can't afford that much land to start, then simply purchase what you can comfortably afford to accomplish what your initial goals are then purchase more land later if plans change and budget allows. You may want the land to be large enough to accommodate a second or third home on it along with other out buildings for equipment storage, livestock or operate from home business. Terrain, slope, soil types, tree species, and the percentage of or lack of wooded areas all can have huge positives or negative financial effects if a home to move into doesn't already exist.