Diamond Heights & Pecks Lots South San Francisco, CA
Older single-family homes and some condos on South San Francisco's east side.
Living in Diamond Heights & Pecks Lots
Diamond Heights & Pecks Lots is on South San Francisco's east side, and it includes the city's first subdivision: Peck's Lots, laid out in 1907 by the Peck of San Francisco's Peck-Judah travel agency. Much of the rest is Pecks Heights, completed in 1955, with generally modest two- and three-bedroom homes of 1,000 to 1,500 square feet, plus a smaller number of condos and townhomes. It's one of the city's more affordable single-family areas, with a 2025 median around $1.19M, and 2026 sales so far have averaged about 116% of asking.
Parking & walkability: Most homes have a garage and a driveway, though some older blocks have tighter lots and busier street parking. Downtown's Grand Avenue shops and restaurants and the South San Francisco Caltrain station are a short drive or bike ride away, and Highway 101 is close by.
What homes in Diamond Heights & Pecks Lots are doing
Single-family homes in Diamond Heights & Pecks Lots sold for a median of about $842K in 2015–16 and $1.22M in 2024–25, a 44% increase, behind South San Francisco as a whole (+54%). In 2025, homes here sold quickly (median 11 days on market) and usually above asking (103.6% of list price on average). So far in 2026 (5 sales through September), the median is $1.31M.
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. 190 single-family sales since 2015.
| Year | Sales | Median price | $/sq ft | Days on market | Sale-to-list |
|---|---|---|---|---|---|
| 2026 (Jan–Sep) | 5 | $1.31M | $761 | 12 | 116.1% |
| 2025 | 10 | $1.19M | $948 | 11 | 103.6% |
| 2024 | 16 | $1.23M | $817 | 19 | 101.5% |
| 2023 | 10 | $1.01M | $920 | 8 | 106.6% |
| 2022 | 12 | $1.19M | $879 | 13 | 100.8% |
| 2021 | 12 | $1.19M | $1,107 | 9 | 111.5% |
| 2020 | 16 | $1.2M | $618 | 12 | 102.6% |
| 2019 | 13 | $930K | $664 | 17 | 103.4% |
| 2018 | 30 | $970K | $675 | 14 | 109.5% |
| 2017 | 22 | $850K | $747 | 14 | 107.5% |
| 2016 | 20 | $838K | $503 | 23 | 101.3% |
| 2015 | 24 | $845K | $479 | 18 | 104.3% |
Condos & townhomes in Diamond Heights & Pecks Lots (78 sales since 2015)
| Year | Sales | Median price | $/sq ft | Days on market | Sale-to-list |
|---|---|---|---|---|---|
| 2026 (Jan–Sep) | 3 | $950K | $762 | 22 | 98.6% |
| 2025 | 6 | $901K | $677 | 30 | 97.7% |
| 2024 | 6 | $889K | $693 | 86 | 98.5% |
| 2023 | 2 few sales | $720K | $770 | 63 | 102.4% |
| 2022 | 7 | $760K | $772 | 30 | 100.1% |
| 2021 | 3 | $710K | $843 | 41 | 103.1% |
| 2020 | 7 | $775K | $840 | 54 | 98.4% |
| 2019 | 7 | $920K | $709 | 29 | 102.3% |
| 2018 | 10 | $950K | $687 | 14 | 106.8% |
| 2017 | 0 | — | — | — | — |
| 2016 | 15 | $845K | $601 | 16 | 105.1% |
| 2015 | 12 | $628K | $591 | 18 | 104.9% |
Diamond Heights & Pecks Lots on the map
Borders are built lot by lot from the county's property lines and where homes have been listed (MLS neighborhood codes), and stay inside official city limits (dashed), 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 Diamond Heights & Pecks Lots; where there are several, yearly figures are sales-weighted. Information deemed reliable but not guaranteed.