Home Appraisal Scope and Valuation Approaches Explained

Desktop, exterior and interior inspection describe scope. Sales comparison, cost and income are valuation approaches, selected for the assignment.

Inspection scope is not an accuracy ranking

A desktop assignment relies on available information; an exterior inspection observes exterior conditions; an interior inspection adds direct observations. Suitability depends on intended use, data and property complexity. The cheapest option is not automatically appropriate, and more access alone does not guarantee a better conclusion.

Understand the three approaches

Sales comparison analyzes relevant transactions and supported differences. The cost approach considers land and improvement cost with depreciation. Income analysis considers applicable income-producing characteristics. The cost approach is not reserved for commercial property, and it does not impose an automatic ceiling on a home’s market value.

Agree on a report that answers the question

Tell the appraiser who will rely on the report, the decision it supports and the requested date. A mortgage lender can impose its own requirements. Private estate, divorce or assessment work should be scoped for its actual users rather than copied from a loan form by default.

Confirm the residential assignment

Alpha’s routine residential service area is King, Snohomish and Skagit Counties. The property, intended use, effective date and users guide the scope. Commercial properties, personal possessions and business valuations are not included by a broad home-appraisal description.

Use the report within its stated limits

Read the property description, analysis, assumptions and effective date. A value opinion does not promise a sale, settlement, assessment reduction or lender acceptance. If the purpose changes, ask whether new work is needed rather than automatically reusing the original report.

What should accompany a quote request?

Send the property address, purpose, requested effective date, intended users, deadline and access contact. Describe the residence type, relevant records and requested deliverable. Mention acreage, accessory units, multiple parcels or unusual features so scope, fee and availability can be confirmed.

Official reference: Property or assignment reference.

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Call 425-753-1971 or email dustin.labrasseur@gmail.com.

Revised October 8, 2026.