Zip Code: 91001 (Altadena, CA) - Trend of Active Listing Count of Houses (Realtor)
Updated on March 13, 2026.

According to data from Realtor.com, the active listing count of houses in the 91001 Zip Code in February 2026 was 45. The month over month percentage change (MoM) was 0.1125%, and the year over year percentage change (YoY) was 1.871%.

You can see similar for other California Zip Codes, and for California.

The chart below shows the trend of active listing count in the 91001 zip code. The table below shows the trend, and the MoM and YoY percentage changes.

Data Source: Realtor.
Zip Code: 91001 - Trend of Active Listing Count of Houses
Zip Code: 91001 Trend of Active Listing Count of Houses
Items per page:
1 – 10 of 116
Month Active Listing Count MoM Perc. Change (%) YoY Perc. Change (%)
Aug 2016 75
Sep 2016 59
Oct 2016 53
Nov 2016 57
Dec 2016 46
Jan 2017 47
Feb 2017 38
Mar 2017 34
Apr 2017 34
May 2017 46
Jun 2017 44
Jul 2017 43
Aug 2017 47 0.093 -0.3733
Sep 2017 49 0.0426 -0.1695
Oct 2017 53 0.0816 0.0
Nov 2017 49 -0.0755 -0.1404
Dec 2017 38 -0.2347 -0.1848
Jan 2018 34 -0.0933 -0.2766
Feb 2018 39 0.1324 0.0132
Mar 2018 43 0.1039 0.2687
Apr 2018 52 0.2235 0.5522
May 2018 52 -0.0096 0.1196
Jun 2018 53 0.0291 0.2045
Jul 2018 57 0.0755 0.3256
Aug 2018 54 -0.0526 0.1489
Sep 2018 57 0.0556 0.1633
Oct 2018 73 0.2807 0.3774
Nov 2018 72 -0.0137 0.4694
Dec 2018 69 -0.0486 0.8267
Jan 2019 58 -0.1533 0.7059
Feb 2019 52 -0.1034 0.3506
Mar 2019 57 0.0865 0.3294
Apr 2019 56 -0.0088 0.0769
May 2019 55 -0.0179 0.068
Jun 2019 51 -0.0727 -0.0377
Jul 2019 55 0.0784 -0.0351
Aug 2019 55 0.0 0.0185
Sep 2019 61 0.1091 0.0702
Oct 2019 59 -0.041 -0.1986
Nov 2019 59 0.0 -0.1875
Dec 2019 48 -0.1795 -0.2993
Jan 2020 32 -0.3333 -0.4483
Feb 2020 27 -0.1719 -0.4904
Mar 2020 32 0.2075 -0.4336
Apr 2020 30 -0.0625 -0.4643
May 2020 27 -0.1167 -0.5182
Jun 2020 30 0.1321 -0.4118
Jul 2020 39 0.3 -0.2909
Aug 2020 37 -0.0513 -0.3273
Sep 2020 25 -0.3243 -0.5902
Oct 2020 27 0.08 -0.5385
Nov 2020 37 0.3704 -0.3675
Dec 2020 37 -0.0135 -0.2396
Jan 2021 28 -0.2466 -0.1406
Feb 2021 18 -0.3455 -0.3208
Mar 2021 23 0.2778 -0.2813
Apr 2021 28 0.1957 -0.0833
May 2021 25 -0.0909 -0.0566
Jun 2021 26 0.04 -0.1333
Jul 2021 35 0.3269 -0.1154
Aug 2021 33 -0.0435 -0.1081
Sep 2021 30 -0.0909 0.2
Oct 2021 31 0.0333 0.1481
Nov 2021 34 0.0968 -0.0811
Dec 2021 32 -0.0588 -0.1233
Jan 2022 31 -0.0469 0.1091
Feb 2022 21 -0.3115 0.1667
Mar 2022 27 0.2857 0.1739
Apr 2022 28 0.0185 0.0
May 2022 25 -0.0909 0.0
Jun 2022 21 -0.18 -0.2115
Jul 2022 31 0.4878 -0.1159
Aug 2022 36 0.1803 0.0909
Sep 2022 41 0.125 0.35
Oct 2022 50 0.2346 0.6129
Nov 2022 40 -0.2 0.1765
Dec 2022 31 -0.225 -0.0313
Jan 2023 26 -0.1613 -0.1475
Feb 2023 22 -0.1731 0.0238
Mar 2023 28 0.3023 0.037
Apr 2023 26 -0.0893 -0.0727
May 2023 25 -0.0196 0.0
Jun 2023 30 0.18 0.439
Jul 2023 39 0.3051 0.2623
Aug 2023 37 -0.039 0.0278
Sep 2023 31 -0.1757 -0.2469
Oct 2023 34 0.1148 -0.32
Nov 2023 35 0.0147 -0.1375
Dec 2023 36 0.029 0.1452
Jan 2024 29 -0.1831 0.1154
Feb 2024 22 -0.2586 0.0
Mar 2024 26 0.186 -0.0893
Apr 2024 29 0.1373 0.1373
May 2024 34 0.1552 0.34
Jun 2024 39 0.1493 0.3051
Jul 2024 34 -0.1169 -0.1169
Aug 2024 36 0.0588 -0.027
Sep 2024 37 0.0278 0.2131
Oct 2024 43 0.1622 0.2647
Nov 2024 36 -0.1744 0.029
Dec 2024 33 -0.0704 -0.0704
Jan 2025 24 -0.2727 -0.1724
Feb 2025 15 -0.3958 -0.3256
Mar 2025 16 0.069 -0.3922
Apr 2025 26 0.6774 -0.1034
May 2025 37 0.4231 0.1045
Jun 2025 46 0.2432 0.1948
Jul 2025 58 0.25 0.6912
Aug 2025 61 0.0522 0.6806
Sep 2025 45 -0.2562 0.2162
Oct 2025 39 -0.1444 -0.1047
Nov 2025 50 0.2987 0.4085
Dec 2025 49 -0.02 0.4848
Jan 2026 44 -0.1122 0.8125
Feb 2026 40 -0.0805 1.7586
Mar 2026 45 0.1125 1.871