18312 Darnell Dr, Olney — tax account 160800766551
Single-family house built in 1973, 2,047 ft² on 0.27 acres in Olney, Montgomery County, assessed at $715,200; last transfer July 17, 2025 for $750,000.
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 | 160800766551 |
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| Map, grid, parcel | Map HT34 · Block E Lot 4 |
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| Location | 18312 Darnell Dr, Olney MD 20832 |
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| Jurisdiction | Montgomery County |
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| Subdivision | Olney Square |
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| Plat | 9769 |
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Land
| Land use | Residential (R) |
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| Zoning | R200 |
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| Acreage | 0.267 acres (11,631 ft²) |
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Structure
| Year built | 1973 |
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| Above-grade area | 2,047 ft² |
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| Style | 2 Story With Basement |
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| Building type | Standard Unit |
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| Construction | Brick |
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| Quality grade | 4 (on a scale of 1 to 9) |
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Assessment — January 2026
| Land | $280,000 |
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| Improvements | $435,200 |
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| Total | $715,200 |
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| Homestead qualification code | 1 |
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Last transfer
| Date | July 17, 2025 |
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| Consideration | $750,000 |
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| Deed reference | liber 57787, folio 0056 |
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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 15% above the median residential account in Montgomery County ($623,400, 248,486 accounts).
- The last transfer price is 5% above 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 160800766551
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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