Real estate agent · Medford
John Costello
Costello Realty Group, Inc.
The local track record
John Costello ranks #51 (tied) by homes listed and #98 by asking volume in Medford, among 457 agents and teams, with 2 homes listed and $1.7M in asking volume.
Median asking price in Medford: Unavailable. Figures cover Nov 2, 2025 – Nov 2, 2026.
Published geographic standings
Where this agent stands out
Citywide totals include qualifying neighborhood homes. Each geography has its own ranking; these rows are not added together.
| Area / reporting period | Homes listed | Listing rank | Asking volume | Volume rank | Median of this agent’s listings |
|---|---|---|---|---|---|
| MedfordMedford · City or townNov 2, 2025 – Nov 2, 2026 edition window | 2Credited homes in this area | T-51of 457 | $1.7MNov 2, 2025 – Nov 2, 2026 | #98 | Unavailable2 priced homes · this agent |
| South BostonNeighborhoodNov 2, 2025 – Nov 2, 2026 edition window | 1Credited homes in this area | T-132of 401 | $875KNov 2, 2025 – Nov 2, 2026 | #277 | Unavailable1 priced home · this agent |
Answers from the data
About John Costello’s listing activity
Where is John Costello most active?
Among the published areas shown for Nov 2, 2025 – Nov 2, 2026, John Costello has the most credited homes in Medford: 2. Citywide counts include qualifying neighborhood homes.
View source and methodology ↗Where does John Costello rank highest?
John Costello ranks #51 (tied) by homes listed and #98 by asking volume in Medford, among 457 agents and teams, with 2 homes listed and $1.7M in asking volume. Median of John Costello’s listings in Medford: Unavailable. Figures cover Nov 2, 2025 – Nov 2, 2026.
View source and methodology ↗How does John Costello rank in Medford?
John Costello ranks #51 (tied) by homes listed and #98 by asking volume in Medford, with 2 homes listed and $1.7M in asking volume from Nov 2, 2025 – Nov 2, 2026.
View source and methodology ↗What is the median of John Costello’s listings in Medford?
Unavailable. The median of John Costello’s listings needs at least five priced homes and prices for at least 90% of the credited homes in Medford from Nov 2, 2025 – Nov 2, 2026.
View source and methodology ↗How do citywide and neighborhood rankings relate?
Each area has its own ranking. A citywide count includes the agent’s qualifying homes inside that city, including its neighborhoods.
View source and methodology ↗Loading current property availability…