Conservation-easement valuations often turn on the property’s highest and best use before the easement—its mineral potential, its suitability for solar, its development capacity, or the condition of a historic structure. Each of those conclusions depends on facts that either were or were not observed. A property-specific analysis therefore asks a simple question first: what did the valuation actually look at?

Three kinds of work, three kinds of record

  • Site visits put a professional on the property. They can confirm access, topography, structures, visible resource indicators, and neighborhood context. A report that documents a site visit should show when it occurred, who attended, and what was observed.
  • Fieldwork goes further: drilling and cores for mineral or aggregate claims, feasibility studies, solar irradiance and interconnection analysis, market analysis grounded in local data. Fieldwork produces artifacts—logs, lab results, maps, studies—that can be listed and traced.
  • Desk review relies on documents and data available without visiting the property: prior reports, public records, aerial imagery, and databases. Desk review is legitimate for many purposes, but its conclusions inherit the limits of its inputs.

Why the distinction matters to the record

When an IRS Report of Value and a taxpayer appraisal reach very different conclusions about the same land, the gap is often explained less by arithmetic than by what each party was in a position to know. A review that identifies, for each material conclusion, whether it rests on observation, on documented fieldwork, or on assumption gives counsel a clearer map of where the record is strong and where it is thin—on both sides.

What to look for in the documents

  1. Statements of scope: does the report say the property was inspected, and does the workfile support that statement?
  2. Technical inputs: are geological, engineering, solar, or development conclusions tied to identified studies and credentialed authors?
  3. Timing: were fieldwork and inspections performed as of the relevant valuation date, or reconstructed later?
  4. Consistency: do photographs, maps, correspondence, and third-party records agree with the report’s description of the property?

The comparative view

Across 225+ IRS conservation-easement valuations, the balance between desk review and fieldwork is one of the most informative recurring characteristics. Where a specific report falls on that spectrum—relative to reports involving similar easement types and economic uses—helps counsel decide which questions to put to a licensed geologist, engineer, appraiser, or other expert.

Requires a licensed opinion: whether a given scope of work was appropriate under professional standards, and what the property was actually worth. A process review organizes the facts on those questions; it does not answer them.

Publication note: This article distinguishes verified facts, document-based observations, interpretation, open questions, and matters requiring a licensed professional opinion. It is educational, does not disclose client-confidential information, and is not legal, tax, accounting, appraisal, geological, engineering, or investment advice. Professional boundaries.