New-build home prices in 20670
Recorded home sales in ZIP 20670 (St. Mary's County) run a median of $183 per square foot, the ground pricing a new-build has to work against. The middle half of sales sit between $160 and $227/sq ft.
What new homes sell for in 20670
At the local median of $183/sq ft, a new home would price roughly:
| 1,500 sq ft | $274,500 |
| 2,000 sq ft | $366,000 |
| 2,500 sq ft | $457,500 |
| 3,000 sq ft | $549,000 |
A gross sale price. The land bid it supports comes after build cost, contingency, fees, finance and profit — the residual the Threshold tool solves.
By home type
| Home type | Sales | Median $/sq ft | Median size | Median price |
|---|---|---|---|---|
| Single-family | 80 | $196 | 1,832 sf | $357,450 |
| Townhouse | 47 | $157 | 2,112 sf | $314,100 |
Recent sales in 20670
| Type | Sq ft | Sale price | $/sq ft | Yr built | Sold |
|---|---|---|---|---|---|
| Single-family | 2,678 | $474,900 | $177 | 2004 | 3/2026 |
| Single-family | 2,811 | $474,600 | $169 | 2004 | 3/2026 |
| Townhouse | 2,124 | $420,000 | $198 | 1997 | 1/2026 |
| Single-family | 1,360 | $370,000 | $272 | 1979 | 3/2026 |
| Townhouse | 2,176 | $368,000 | $169 | 2001 | 3/2026 |
| Single-family | 1,368 | $340,000 | $249 | 1982 | 2/2026 |
| Townhouse | 1,450 | $315,000 | $217 | 1997 | 2/2026 |
| Townhouse | 2,424 | $463,000 | $191 | 2005 | 11/2025 |
| Single-family | 2,605 | $449,000 | $172 | 1989 | 8/2025 |
| Single-family | 2,069 | $430,000 | $208 | 1990 | 7/2025 |
| Single-family | 2,198 | $420,000 | $191 | 1990 | 2/2025 |
| Single-family | 2,246 | $409,000 | $182 | 1993 | 1/2025 |
| Single-family | 1,835 | $407,000 | $222 | 2002 | 3/2025 |
| Single-family | 1,662 | $406,000 | $244 | 1979 | 9/2025 |
| Single-family | 1,476 | $401,000 | $272 | 1989 | 7/2025 |
Appraising a site in 20670?
Drop a pin and Threshold US Land turns these comparables into an achievable new-build price and the maximum land bid that still hits your margin — in under 60 seconds.
Reserve founding access →Questions about 20670 home prices
- What is the price per square foot in 20670?
- Recent recorded home sales in ZIP 20670 (St. Mary's County, MD) run a median of $183 per square foot, with the middle half between $160 and $227, from 127 qualified sales in 2021-2026.
- What does a home sell for in 20670?
- The typical recorded sale in 20670 is a 1,994 sq ft home at $341,000. A new 1,994 sq ft home at the local $183/sq ft would price around $364,902.
- Where does this 20670 data come from?
- Maryland Department of Planning parcel data derived from the State Department of Assessments and Taxation (SDAT) property records. Qualified residential sales from 2021. Estimates for site screening, not an appraisal.
All of St. Mary's County →
Nearby ZIPs: 20653 · 20688 · 20629 · 20667 · 20634 · 20619 · 20686 · 20657
Maryland land hub
Method: improved arms-length residential sales with recorded structure square footage (2021+) from Maryland Department of Planning parcel data derived from the State Department of Assessments and Taxation (SDAT) property records, assigned to nearest ZIP centroid. $/sq ft is sale price over heated living area. Estimates for site screening, not a USPAP appraisal. Updated July 2026.