In Maryland, there are more than two million property accounts. SDAT must appraise each of these properties once every three years. SDAT's Real Property division manages 24 local assessment offices across the state to provide fair, transparent real property valuations and owner appeals to Maryland residential and commercial properties.
Real Property Assessment services
Find real property assessment services, benefits information, and resources.
Appealing your Real Property Assessment
Property owners should file an appeal when the estimated value of their property does not accurately reflect what they believe to be its current market value.
Real Property Reports
View previous years reports on our Reports page.
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Sales Data
FY 2026 Median Residential Sales by Quarter Report - PDF 115.3 KB
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Tax Rates
Tax Rates 2026-2027 - Tax Table & Homestead Credit Caps - July 2026 - PDF 930.9 KB
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AIMS
2026 Combined AIMS Report - PDF 680.2 KB
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Constant Yield Tax Rate Report
2026 Constant Yield Tax Rate Report - PDF 854 KB
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Reassessment Reports
2026 Reassessment Report and Press Release - PDF 1.1 MB
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Assessable Base
Assessable Base Report March 2026 - PDF 501 KB
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Residential Cost Rates
2026 Residential Cost Rates - PDF 193.4 KB
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Sales Data
FY 2025 Median Residential Sales by Quarter Report - PDF 205.4 KB