ISA CAPP common mistakes
ISA CAPP · Understand the traps and how to avoid them.
Citing an appraisal standard by its section number without stating what the standard requires, and applying a standard of valuation (for example fair market value) without defining it in the report.
Candidates memorize the table of contents of the standards and the names of the standards of value, then assume reciting a number or a label shows competence. The exam instead tests whether you can state the operative requirement and show how it shapes the assignment.
What to do instead
For each standard, write one sentence in your own words stating the obligation it imposes, then one sentence on what evidence in a workfile would demonstrate compliance. For each standard of value, draft a two-sentence definition and note one way it differs from fair market value, such as treatment of duress or a forced-sale premise. Practice turning each into a short written answer.
Treating the appraisal process as a fixed checklist that always runs identification, preliminary analysis, value definition, data collection, highest and best use, three approaches, reconciliation, and report, in that order, regardless of the property.
Study outlines present the process as a linear list, so candidates reproduce the list instead of recognizing that scope of work, problem identification, and the approaches used are assignment-specific judgments.
What to do instead
Learn the process as an iterative decision chain: identify the problem and intended use, determine scope of work, gather and analyze data, apply only the approaches the market supports, then reconcile. For each of five property types (fine art, jewelry, antique furniture, collectible vehicles, rare books), write which approaches you would use and why you would omit the others.
Writing a reconciliation that simply averages the indications of value or selects the highest one, without explaining why one approach is most reliable for the subject and intended use.
Candidates equate reconciliation with arithmetic and worry that a judgment call looks arbitrary, so they default to averaging or to the largest number. The exam rewards a reasoned weighting tied to the quality and relevance of the evidence.
What to do instead
Practice reconciliation paragraphs that rank the approaches by reliability for the specific property, state the evidence supporting that ranking (for example, an active dealer market with frequent comparable sales versus a thin auction record), and explain any adjustment to the selected indication. Write three such paragraphs for the same property with different data sets.
Applying a single adjustment factor to a comparable sale, such as a flat percentage for condition or a fixed premium for provenance, without showing the market basis for the amount.
Adjustment grids invite formulaic thinking, and candidates want a number to fill a cell. The exam tests whether the adjustment can be supported by market evidence rather than asserted.
What to do instead
For each adjustment you use, write the paired-sales or market-extraction evidence behind it: which two sales differed mainly by that characteristic, and what the observed difference was. When no market evidence exists, state that the adjustment is based on appraiser judgment and explain the reasoning and its limits.
Describing the property in generic terms (a 'bronze sculpture', a 'Victorian chair', a 'diamond ring') without the attributes that drive value in that market, such as maker, period, medium, dimensions, marks, signatures, condition, provenance, or grading.
Candidates write descriptions that would satisfy a lay reader, not a market participant, and they underestimate how much declared-specialty knowledge the exam expects in the identification itself.
What to do instead
Build a description template for each specialty you declare, listing every attribute a specialist buyer would ask about. For jewelry, include metal, karat, stone weight, cut, color, clarity, and laboratory report status. For art, include medium, support, dimensions, signature location, edition, and exhibition history. For furniture, include wood, joinery, region, and restoration. Use the template on every practice appraisal.
Relying on asking prices, insurance schedules, or online listing aggregators as primary comparable evidence instead of closed sales, auction results, or verified dealer transactions.
Asking prices are easy to find and look authoritative, and candidates confuse price with value. The exam expects the appraiser to distinguish offer prices from consummated transactions and to state the source and verification of each comparable.
What to do instead
For every comparable you cite, record the source, the date, whether it was a completed sale or an asking price, and how it was verified. Practice discounting asking prices with evidence, and state in the report why an asking price was used only as a secondary indicator. Build a habit of noting the auction house, sale date, lot number, and hammer or total price.
Treating the report as a narrative of what the appraiser did and omitting the elements a reader needs to understand and rely on the opinion, such as intended use, intended users, scope of work, extraordinary assumptions, hypothetical conditions, and the definition of value.
Candidates write for themselves rather than for a specific intended user, and they assume the reader shares their context. Report-writing questions punish missing elements more than awkward prose.
What to do instead
Draft a one-page report skeleton with headings for each required element and fill it for three different intended uses (estate tax, equitable distribution, insurance coverage). For each, note which assumptions and limiting conditions change and why. Then write a short report from the skeleton and check it against the skeleton before reviewing style.
Stating an opinion of value in a report without a workfile that documents the data considered, the analysis performed, and the reasoning behind rejected alternatives.
Candidates focus on the deliverable and treat the workfile as paperwork to reconstruct later. The exam tests whether the appraiser can demonstrate the basis for the opinion and the scope of work actually performed.
What to do instead
Adopt a rule that every number in the report has a traceable source note in the workfile. Practice writing a workfile summary for a completed practice appraisal: data sources, comparables considered and rejected with reasons, adjustments and their basis, and the reconciliation logic. Keep the summary to one page so the discipline is sustainable.
Accepting an assignment whose purpose, property type, or value premise lies outside the appraiser's demonstrated competence, and addressing the gap only by disclosing it in the report.
Candidates believe disclosure alone satisfies the competence requirement, and they fear declining work. The exam distinguishes disclosing a limitation from taking steps to become competent or associating with someone who is.
What to do instead
Before accepting a hypothetical assignment, list the specific knowledge and skills it requires and compare them with your documented experience. If a gap exists, write the plan: what research, coursework, or consultation with a qualified specialist you would complete before forming the opinion. State in the report how competence was achieved, not merely that a limitation exists.
Skipping a highest and best use analysis for personal property on the assumption that the concept applies only to real estate, or treating current use as automatically the highest and best use.
Highest and best use is taught mainly in real estate contexts, so candidates omit it for art, jewelry, or collectibles. The exam expects the appraiser to consider whether an alternative use, such as sale as a single lot versus a broken set, or restoration versus as-is condition, would produce a higher value.
What to do instead
For each personal property appraisal, write a short highest and best use paragraph testing physically possible, legally permissible, financially feasible, and maximally productive uses. Apply it concretely: a matched pair of vases sold together versus separately, a documented but unrestored piece of furniture, a collection sold as a single lot versus item by item.