12400 Triadelphia Rd, Ellicott City — tax account 1403312968
Single-family house built in 1993, 7,961 ft² on 7.93 acres in Ellicott City, Howard County, assessed at $1,751,800; last transfer January 30, 2026 for $1,625,000.
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 | 1403312968 |
|---|
| Map, grid, parcel | Map 22 Grid 6 Parcel 528 · Lot 10 |
|---|
| Location | 12400 Triadelphia Rd, Ellicott City MD 21042 |
|---|
| Jurisdiction | Howard County |
|---|
| Subdivision | Regulars |
|---|
| Plat | 6285 |
|---|
Land
| Land use | Residential (R) |
|---|
| Zoning | RRDEO |
|---|
| Acreage | 7.930 acres (345,431 ft²) |
|---|
Structure
| Year built | 1993 |
|---|
| Above-grade area | 7,961 ft² |
|---|
| Style | 2 Story With Basement |
|---|
| Building type | Standard Unit |
|---|
| Construction | Brick |
|---|
| Quality grade | 7 (on a scale of 1 to 9) |
|---|
Assessment — January 2024
| Land | $372,900 |
|---|
| Improvements | $1,378,900 |
|---|
| Total | $1,751,800 |
|---|
Last transfer
| Date | January 30, 2026 |
|---|
| Consideration | $1,625,000 |
|---|
| Deed reference | liber 22587, folio 0450 |
|---|
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 157% above the median residential account in Howard County ($681,000, 62,119 accounts).
- The last transfer price is 7% 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 1403312968
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.
$19card · PDF within 24 h · you pay after receiving itSee the sample (PDF)
Order the report