12343 Preakness Circle Ln, Clarksville — tax account 1405448638
Single-family house built in 2011, 6,747 ft² on 1.04 acres in Clarksville, Howard County, assessed at $2,291,300; last transfer October 15, 2025 for $2,500,000.
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 | 1405448638 |
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| Map, grid, parcel | Map 28 Grid 18 Parcel 74 · Block 9999 Lot 4 |
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| Location | 12343 Preakness Circle Ln, Clarksville MD 21029 |
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| Jurisdiction | Howard County |
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| Subdivision | Walnut |
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| Plat | 19223 |
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Land
| Land use | Residential (R) |
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| Zoning | RCDEO |
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| Acreage | 1.040 acres (45,302 ft²) |
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Structure
| Year built | 2011 |
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| Above-grade area | 6,747 ft² |
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| Style | 2 Story With Basement |
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| Building type | Standard Unit |
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| Construction | Frame |
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| Quality grade | 6 (on a scale of 1 to 9) |
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Assessment — January 2026
| Land | $646,600 |
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| Improvements | $1,644,700 |
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| Total | $2,291,300 |
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| Homestead qualification code | 1 |
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Last transfer
| Date | October 15, 2025 |
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| Consideration | $2,500,000 |
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| Deed reference | liber 13120, folio 0083 |
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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 236% above the median residential account in Howard County ($681,000, 62,119 accounts).
- The last transfer price is 9% above 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 1405448638
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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