San Jose building permits, September 2026
The San Jose metro permitted 6,895 housing units in the twelve months through September 2026, up 42.1% from the twelve months before. The twelve-month total peaked at 10,397 in November 2014 and bottomed at 995 in December 2009.
The first chart is the trend. A twelve-month sum holds a whole year of filings, so one large building cannot move it much and the seasons cancel out. It is the line to read for whether San Jose is permitting more housing or less.
The second chart is the same data one month at a time, and it shows why the first one exists. In September 2026 alone the metro permitted 493 units — the light grey line — which is worth about 7% of the year. One apartment building can be several hundred units filed on one day, so the raw count swings between 19 and 1,949 without the industry doing anything unusual; every ‘permits plunge’ story is built on that line alone. The orange line is a three-month average — 400 a month, down 50.0% on a year earlier — which turns within a season and still takes out most of the single-filing noise.
Permits lead construction: they say what builders intend, and the monthly construction jobs post says what they did. Not seasonally adjusted — permits have a spring — so compare with the same months a year earlier.
Source: U.S. Census Bureau Building Permits Survey, San Jose–Sunnyvale–Santa Clara MSA, monthly, not seasonally adjusted, via FRED (SANJ906BPPRIV). The twelve-month sum and three-month average are computed from the monthly count. Auto-generated each build.