41435 Osborne Ln, Leonardtown — tax account 1903179588
Single-family house built in 2018, 3,190 ft² on 0.18 acres in Leonardtown, St. Mary's County, assessed at $688,900; last transfer January 13, 2026 for $665,000.
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 | 1903179588 |
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| Map, grid, parcel | Map 127 Grid 1 Parcel 533 · Lot 150 |
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| Location | 41435 Osborne Ln, Leonardtown MD 20650 |
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| Jurisdiction | St. Mary's County |
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| Subdivision | Clarks Rest |
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Land
| Land use | Residential (R) |
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| Acreage | 0.180 acres (7,841 ft²) |
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Structure
| Year built | 2018 |
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| Above-grade area | 3,190 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 2026
| Land | $108,700 |
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| Improvements | $580,200 |
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| Total | $688,900 |
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Last transfer
| Date | January 13, 2026 |
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| Consideration | $665,000 |
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| Deed reference | liber 06348, folio 0094 |
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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 100% above the median residential account in St. Mary's County ($344,900, 37,183 accounts).
- The last transfer price is 3% 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 1903179588
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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