18311 Chelsea Knolls Dr, Mount Airy — tax account 1404594316
Single-family house built in 2014, 4,336 ft² on 0.94 acres in Mount Airy, Howard County, assessed at $1,261,500; last transfer December 18, 2025 for $1,050,000.
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 | 1404594316 |
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| Map, grid, parcel | Map 12 Grid 5 Parcel 78 · Lot 16 |
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| Location | 18311 Chelsea Knolls Dr, Mount Airy MD 21771 |
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| Jurisdiction | Howard County |
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| Subdivision | Regulars |
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Land
| Land use | Residential (R) |
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| Zoning | RCDEO |
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| Acreage | 0.937 acres (40,816 ft²) |
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Structure
| Year built | 2014 |
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| Above-grade area | 4,336 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 | $304,900 |
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| Improvements | $956,600 |
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| Total | $1,261,500 |
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Last transfer
| Date | December 18, 2025 |
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| Consideration | $1,050,000 |
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| Deed reference | liber 18246, folio 0295 |
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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 85% above the median residential account in Howard County ($681,000, 62,119 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 1404594316
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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