Browse the full Resources Index
An appraisal award only carries as much weight as the documentation behind it, which is why careful record-keeping tends to separate experienced appraisers from those newer to the work. Field notes taken during an inspection, ideally recorded on-site rather than reconstructed afterward from memory, form the backbone of a defensible file. These notes typically include measurements, material identification, observed damage patterns, and the specific location on the structure where each observation was made, described precisely enough that someone reading the file months later can understand exactly what was seen and where without needing the original appraiser present to explain it.
Photographs carry much of the evidentiary weight in a modern appraisal file, and the standards for useful photographs have become fairly consistent across the industry: wide shots establishing context and location, closer shots showing the specific damage, and reference photographs, sometimes including a chalk-marked test square on a roof, that let a reviewer verify the extent of damage against a known area. Photographs taken with metadata such as time and location stamps, or organized in a way that ties each image clearly to a corresponding line in the field notes, hold up better under later scrutiny than an unlabeled batch of images with no clear structure.
Scope documentation, meaning the written line-item basis for the amount of loss, is typically prepared using estimating software common to the property claims industry, such as Xactimate or Symbility, which allow pricing to be tied to regional cost databases and to specific, identifiable line items rather than a lump-sum figure with no supporting detail. Retaining the underlying estimate file, not just a printed summary, allows an appraiser to demonstrate exactly how a total was built if a question arises later about a particular component of the award. Notes explaining why a particular line item was included or excluded, and why a given quantity or unit cost was chosen over an alternative, add a layer of reasoning that a bare spreadsheet total cannot convey on its own.
Measurements deserve particular care given how much a final figure depends on accurate roof, wall, and floor dimensions. Aerial measurement reports, hand measurements taken with a tape or laser device, and roof-slope calculations each carry their own margin of error, and a thorough appraiser typically notes which method was used and cross-checks significant discrepancies rather than accepting a single source without question, particularly on a complex roofline with multiple pitches and valleys. A discrepancy of even a few squares on a large roof can shift a total by a meaningful amount, so reconciling two measurement sources before finalizing a scope is generally worth the extra time it takes.
Beyond the inspection itself, professional appraisers generally retain their complete file, correspondence, field notes, photographs, estimates, and any disclosure statements, for a period well beyond the conclusion of the assignment, since a challenge to an award can arise months or occasionally years after the fact. Consistent documentation habits, applied the same way on every assignment regardless of which party made the selection, tend to be what allows an appraiser to answer questions about a specific award with confidence long after the details of any individual file have faded from memory. Digital storage has made comprehensive retention far easier than it once was, though it has also raised its own housekeeping questions about organizing years of files in a way that remains searchable rather than simply accumulating.
This article is general education about how the appraisal process commonly works. It is not legal advice, and specific procedures can vary by state and policy.
Russ Lis is a working property insurance appraiser and umpire based in Minnesota, serving clients nationwide. Contact Appraisal Resolution.