Westborough South San Francisco, CA
In the western hills with mid-century homes, parks, and quick access to 280.
What homes in Westborough are doing
Single-family homes in Westborough sold for a median of about $865K in 2015–16 and $1.39M in 2024–25, a 61% increase, ahead of South San Francisco as a whole (+54%). In 2025, homes here sold quickly (median 14 days on market) and usually above asking (105.9% of list price on average). So far in 2026 (39 sales through September), the median is $1.45M.
Median single-family price, 2015–2026
* 2026 covers January through September. Hollow dots mark years with fewer than 3 single-family sales; treat those medians as rough. 677 single-family sales since 2015.
| Year | Sales | Median price | $/sq ft | Days on market | Sale-to-list |
|---|---|---|---|---|---|
| 2026 (Jan–Sep) | 39 | $1.45M | $807 | 13 | 110.2% |
| 2025 | 42 | $1.38M | $760 | 14 | 105.9% |
| 2024 | 39 | $1.4M | $779 | 12 | 105.9% |
| 2023 | 37 | $1.32M | $745 | 14 | 103.5% |
| 2022 | 53 | $1.42M | $789 | 11 | 107.8% |
| 2021 | 66 | $1.35M | $731 | 10 | 109.6% |
| 2020 | 50 | $1.17M | $651 | 19 | 100.0% |
| 2019 | 61 | $1.2M | $643 | 14 | 109.7% |
| 2018 | 63 | $1.24M | $633 | 15 | 108.1% |
| 2017 | 70 | $987K | $560 | 12 | 111.3% |
| 2016 | 82 | $878K | $523 | 17 | 104.0% |
| 2015 | 75 | $850K | $481 | 14 | 106.4% |
Condos & townhomes in Westborough (797 sales since 2015)
| Year | Sales | Median price | $/sq ft | Days on market | Sale-to-list |
|---|---|---|---|---|---|
| 2026 (Jan–Sep) | 32 | $790K | $754 | 16 | 102.7% |
| 2025 | 34 | $753K | $751 | 22 | 100.5% |
| 2024 | 43 | $750K | $667 | 29 | 100.0% |
| 2023 | 33 | $773K | $731 | 13 | 100.0% |
| 2022 | 53 | $825K | $789 | 23 | 100.3% |
| 2021 | 86 | $813K | $763 | 16 | 103.1% |
| 2020 | 89 | $726K | $717 | 18 | 101.3% |
| 2019 | 82 | $730K | $710 | 17 | 105.4% |
| 2018 | 69 | $750K | $726 | 13 | 110.4% |
| 2017 | 95 | $650K | $625 | 14 | 106.1% |
| 2016 | 82 | $640K | $555 | 21 | 101.7% |
| 2015 | 99 | $580K | $536 | 15 | 106.5% |
Westborough on the map
Borders follow real streets and where homes have sold (MLS neighborhood codes), so a home or two along an edge may differ from official MLS lines.
Other South San Francisco neighborhoods
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Source: MLSListings, Inc. closed sales, 2015–September 2026, summarized by Drew Lehr. Neighborhood figures combine the MLS area(s) that make up Westborough; where there are several, yearly figures are sales-weighted. Information deemed reliable but not guaranteed.