28560 Plateau Ln, Mechanicsville — tax account 1905064899
Single-family house built in 2008, 4,050 ft² on 1.11 acres in Mechanicsville, St. Mary's County, assessed at $770,600; last transfer December 12, 2025 for $639,000.
From the State Department of Assessments and Taxation file as published by the Maryland Department of Planning (MD iMAP) — not the official record. Open the official SDAT record.
Account
| Tax account number | 1905064899 |
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| Map, grid, parcel | Map 8 Grid 5 Parcel 334 · Lot 500 4 |
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| Location | 28560 Plateau Ln, Mechanicsville MD 20659 |
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| Jurisdiction | St. Mary's County |
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| Subdivision | Wilson Copsey |
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| Plat | 61 100 |
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Land
| Land use | Residential (R) |
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| Zoning | RL |
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| Acreage | 1.110 acres (48,352 ft²) |
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Structure
| Year built | 2008 |
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| Above-grade area | 4,050 ft² |
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| Style | 2 Story With Basement |
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| Building type | Standard Unit |
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| Construction | Siding |
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| Quality grade | 5 (on a scale of 1 to 9) |
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Assessment — January 2025
| Land | $120,500 |
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| Improvements | $650,100 |
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| Total | $770,600 |
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| Homestead qualification code | 1 |
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Last transfer
| Date | December 12, 2025 |
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| Consideration | $639,000 |
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| Deed reference | liber 03398, folio 0507 |
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What this means
- Maryland reassesses each property every three years; increases are phased in over the following three years, and the Homestead Tax Credit caps the yearly increase on a principal residence.
- Assessed 123% above the median residential account in St. Mary's County ($344,900, 37,183 accounts).
- The last transfer price is 17% below the current assessment.
Parcel point of the Maryland Department of Planning — not a survey.
Data: Maryland Department of Planning / SDAT, MD iMAP Parcel Points, retrieved November 1, 2026. Sources and freshness. No owner names or mailing addresses are published.
The report for account 1905064899
This page shows the assessment record. The report adds what lies around the property: FEMA flood zone, Critical Area designation, wetlands, contaminated land sites nearby and historic properties.
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