421 S Union Ave, Havre De Grace — tax account 1306011780
Commercial built in 1930, 10,833 ft² on 0.14 acres in Havre De Grace, Harford County, assessed at $981,300; last transfer July 18, 2025 for $795,000.
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 | 1306011780 |
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| Map, grid, parcel | Map 602 Grid 4 Parcel 1207 · Block 254 Lot 308 |
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| Location | 421 S Union Ave, Havre De Grace MD 21078 |
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| Jurisdiction | Harford County |
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Land
| Land use | Commercial (C) |
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| Zoning | RO |
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| Acreage | 0.138 acres (6,011 ft²) |
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Structure
| Year built | 1930 |
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| Above-grade area | 10,833 ft² |
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| Style | OFFICE Office Building |
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| Building type | OFFICE Office Building |
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| Construction | Stucco |
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| Quality grade | 3 (on a scale of 1 to 9) |
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| Stories | 3 |
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Assessment — January 2024
| Land | $194,400 |
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| Improvements | $786,900 |
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| Total | $981,300 |
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Last transfer
| Date | July 18, 2025 |
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| Consideration | $795,000 |
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| Deed reference | liber 02923, folio 0541 |
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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 75% above the median commercial account in Harford County ($561,800, 2,664 accounts).
- The last transfer price is 19% 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 1306011780
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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