Agricultural Land Management III: Improvements, Buildings, and Highest and Best Use
Core concepts
Improvements on agricultural land-fences, corrals, irrigation systems, grain storage, barns, and dwellings-must be analyzed for contribution to value, not just cost. Understand functional and economic obsolescence: a specialized facility may add little to a buyer who will not use it, and over-improvement relative to the land's productivity can be a value drag. Know the difference between real property and trade fixtures or personal property (portable equipment, some irrigation components).
Central to this domain is highest and best use (HBU): the reasonably probable, legally permissible, physically possible, financially feasible use that produces the highest value. For farmland, HBU may be agricultural, recreational, or transitional (development potential near urban edges). Analyze HBU as if vacant and as improved. Zoning, easements, and access constrain legally permissible uses.
Traps
Candidates often assume cost equals contribution, or that the current use is automatically the HBU. Specialized buildings are frequently overvalued. Transitional land questions test whether you can separate agricultural value from speculative development value-speculation alone is not HBU unless it is reasonably probable and financially feasible. Watch for personal property mistakenly included in a real property valuation.
Worked example
A farm has a large, purpose-built hog facility no local operator wants. Rule of thumb: value the improvement at its contributory value in its market-often salvage or alternative-use value-not depreciated cost. If the land's agricultural HBU supports only modest buildings, the excess is over-improvement and may add nothing.