12509 Knightsbridge Ct, Rockville — tax account 160400129153
Single-family house built in 1968, 1,326 ft² on 0.35 acres in Rockville, Montgomery County, assessed at $793,300; last transfer December 8, 2025 for $645,000.
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 | 160400129153 |
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| Map, grid, parcel | Map FQ34 · Block D Lot 3 |
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| Location | 12509 Knightsbridge Ct, Rockville MD 20850 |
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| Jurisdiction | Montgomery County |
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| Subdivision | Glen Park |
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Land
| Land use | Residential (R) |
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| Zoning | R200 |
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| Acreage | 0.346 acres (15,072 ft²) |
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Structure
| Year built | 1968 |
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| Above-grade area | 1,326 ft² |
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| Style | 1 Story With Basement |
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| Building type | Standard Unit |
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| Construction | Frame |
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| Quality grade | 4 (on a scale of 1 to 9) |
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Assessment — October 2023
| Land | $416,500 |
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| Improvements | $376,800 |
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| Total | $793,300 |
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Last transfer
| Date | December 8, 2025 |
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| Consideration | $645,000 |
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| Deed reference | liber 60847, folio 0046 |
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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 27% above the median residential account in Montgomery County ($623,400, 248,486 accounts).
- The last transfer price is 19% below the current assessment.
- Built before 1978: Maryland requires rental units built before 1978 to be registered with MDE and to pass a lead-risk reduction inspection.
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 160400129153
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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