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King County Department of Assessments

Fair, Equitable, and Understandable Property Valuations

Department of Assessments

500 Fourth Avenue,
Suite ADM-AS-0708,
Seattle, WA 98104

Office Hours:
Mon - Fri
8:30 a.m. to 4:30 p.m.

TEL: 206-296-7300
FAX: 206-296-5107
TTY: 206-296-7888

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Glossary of terms for commercial parcels

GRADE
Classification by construction quality, which refers to the types of materials used and, the quality of workmanship.  Buildings of better quality (higher grade) cost more to build per unit of measure and command higher value.

GROSS INCOME MULTIPLIER(GIM)
A capitalization technique that uses the ratio between the sale price of a property and its potential gross income or its effective gross income.  Once calculated for several similar assets, a GIM may be multiplied against the income of a property to obtain an estimate of value.