New-build home prices in 20688
Recorded home sales in ZIP 20688 (St. Mary's County) run a median of $209 per square foot, the ground pricing a new-build has to work against. The middle half of sales sit between $168 and $301/sq ft.
What new homes sell for in 20688
At the local median of $209/sq ft, a new home would price roughly:
| 1,500 sq ft | $313,500 |
| 2,000 sq ft | $418,000 |
| 2,500 sq ft | $522,500 |
| 3,000 sq ft | $627,000 |
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 | 233 | $239 | 1,980 sf | $420,000 |
| Townhouse | 32 | $161 | 2,452 sf | $398,590 |
| Condominium | 25 | $178 | 2,388 sf | $420,000 |
Recent sales in 20688
| Type | Sq ft | Sale price | $/sq ft | Yr built | Sold |
|---|---|---|---|---|---|
| Single-family | 4,595 | $1,644,500 | $358 | 1988 | 4/2026 |
| Single-family | 2,773 | $1,275,000 | $460 | 1963 | 2/2026 |
| Single-family | 3,116 | $1,100,000 | $353 | 1989 | 1/2026 |
| Single-family | 2,042 | $532,260 | $261 | 2025 | 2/2026 |
| Condominium | 2,668 | $450,000 | $169 | 2005 | 3/2026 |
| Condominium | 2,693 | $420,000 | $156 | 2005 | 2/2026 |
| Single-family | 1,120 | $400,000 | $357 | 1994 | 2/2026 |
| Single-family | 1,316 | $399,900 | $304 | 1988 | 1/2026 |
| Single-family | 1,762 | $365,000 | $207 | 1957 | 3/2026 |
| Single-family | 1,238 | $286,000 | $231 | 1952 | 4/2026 |
| Single-family | 1,528 | $285,000 | $187 | 1959 | 4/2026 |
| Single-family | 4,772 | $1,700,000 | $356 | 2003 | 6/2025 |
| Single-family | 2,568 | $1,350,000 | $526 | 1965 | 7/2025 |
| Single-family | 2,892 | $1,080,000 | $373 | 1951 | 8/2025 |
| Single-family | 2,106 | $1,001,500 | $476 | 1998 | 4/2025 |
Appraising a site in 20688?
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 20688 home prices
- What is the price per square foot in 20688?
- Recent recorded home sales in ZIP 20688 (St. Mary's County, MD) run a median of $209 per square foot, with the middle half between $168 and $301, from 290 qualified sales in 2021-2026.
- What does a home sell for in 20688?
- The typical recorded sale in 20688 is a 2,152 sq ft home at $416,500. A new 2,152 sq ft home at the local $209/sq ft would price around $449,768.
- Where does this 20688 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: 20629 · 20657 · 20619 · 20670 · 20636 · 20634 · 20653 · 20620
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.