San Mateo County, CA - Market Hotness: Trend of Supply Score (Realtor)
Updated on March 13, 2026.
According to data from Realtor.com, the market hotness: supply score for San Mateo County, CA in January 2026 was 99.379.
The chart and table below shows the trend of the market hotness: supply score for San Mateo County, CA.
You can see similar for other California counties.
Note: Supply Score is an index representing the metro's median days on market ranking compared to other metros.
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Data Source: Realtor.
San Mateo County, CA - Market Hotness: Trend of Supply Score
San Mateo County, CA - Market Hotness: Trend of Supply Score
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| Month | Supply Score |
|---|---|
| September 2017 | 99.50341402855369 |
| October 2017 | 99.87585350713843 |
| November 2017 | 99.87585350713843 |
| December 2017 | 99.62756052141528 |
| January 2018 | 99.56548727498448 |
| February 2018 | 99.81378026070763 |
| March 2018 | 99.9379267535692 |
| April 2018 | 99.68963376784605 |
| May 2018 | 99.62756052141528 |
| June 2018 | 99.56548727498448 |
| July 2018 | 98.88268156424581 |
| August 2018 | 98.88268156424581 |
| September 2018 | 99.4413407821229 |
| October 2018 | 99.9379267535692 |
| November 2018 | 99.81378026070763 |
| December 2018 | 99.9379267535692 |
| January 2019 | 99.50341402855369 |
| February 2019 | 99.81378026070763 |
| March 2019 | 99.75170701427685 |
| April 2019 | 99.37926753569212 |
| May 2019 | 98.01365611421477 |
| June 2019 | 98.88268156424581 |
| July 2019 | 96.8342644320298 |
| August 2019 | 95.7169459962756 |
| September 2019 | 97.57914338919925 |
| October 2019 | 98.26194909993792 |
| November 2019 | 98.9447548106766 |
| December 2019 | 95.03414028553694 |
| January 2020 | 73.06021104903786 |
| February 2020 | 98.57231533209186 |
| March 2020 | 99.62756052141528 |
| April 2020 | 98.13780260707635 |
| May 2020 | 95.28243327126009 |
| June 2020 | 98.13780260707635 |
| July 2020 | 97.8274363749224 |
| August 2020 | 94.84792054624457 |
| September 2020 | 90.37864680322781 |
| October 2020 | 87.27498448168839 |
| November 2020 | 85.72315332091868 |
| December 2020 | 76.47423960273122 |
| January 2021 | 67.97020484171323 |
| February 2021 | 90.13035381750466 |
| March 2021 | 94.90999379267537 |
| April 2021 | 83.73680943513345 |
| May 2021 | 61.08007448789572 |
| June 2021 | 57.54189944134078 |
| July 2021 | 58.47299813780261 |
| August 2021 | 68.5909373060211 |
| September 2021 | 73.74301675977654 |
| October 2021 | 85.1024208566108 |
| November 2021 | 89.75791433891993 |
| December 2021 | 53.941651148355064 |
| January 2022 | 10.614525139664805 |
| February 2022 | 87.95779019242707 |
| March 2022 | 96.52389819987586 |
| April 2022 | 88.3302296710118 |
| May 2022 | 83.4885164494103 |
| June 2022 | 78.89509621353197 |
| July 2022 | 80.57107386716325 |
| August 2022 | 75.35692116697703 |
| September 2022 | 82.74363749224084 |
| October 2022 | 92.79950341402855 |
| November 2022 | 91.495965238982 |
| December 2022 | 85.22656734947238 |
| January 2023 | 72.74984481688392 |
| February 2023 | 72.68777157045314 |
| March 2023 | 99.19304779639975 |
| April 2023 | 95.96523898199875 |
| May 2023 | 93.23401613904407 |
| June 2023 | 90.37864680322781 |
| July 2023 | 85.59900682805711 |
| August 2023 | 77.5915580384854 |
| September 2023 | 86.77839851024208 |
| October 2023 | 98.07572936064555 |
| November 2023 | 91.06145251396647 |
| December 2023 | 76.03972687771571 |
| January 2024 | 57.976412166356305 |
| February 2024 | 87.58535071384233 |
| March 2024 | 99.13097454996897 |
| April 2024 | 97.08255741775295 |
| May 2024 | 94.28926132836747 |
| June 2024 | 93.0477963997517 |
| July 2024 | 91.62011173184358 |
| August 2024 | 84.72998137802608 |
| September 2024 | 92.30291744258224 |
| October 2024 | 96.58597144630664 |
| November 2024 | 94.90999379267537 |
| December 2024 | 90.9993792675357 |
| January 2025 | 72.50155183116077 |
| February 2025 | 90.81315952824333 |
| March 2025 | 99.62756052141528 |
| April 2025 | 97.95158286778398 |
| May 2025 | 93.48230912476723 |
| June 2025 | 93.23401613904407 |
| July 2025 | 85.41278708876474 |
| August 2025 | 77.21911855990068 |
| September 2025 | 81.3780260707635 |
| October 2025 | 93.17194289261327 |
| November 2025 | 95.09621353196772 |
| December 2025 | 92.24084419615146 |
| January 2026 | 75.97765363128491 |
| February 2026 | 99.37926753569212 |
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