Cambrian Park Plaza SignThe Cambrian area of San Jose, like much of Santa Clara County, is a very “hot market” overall, but it can be confusing to know how hot it really is because there are multiple school districts – and schools are probably the number one driver of home values in this highly educated valley. On top of that, the market was hot before the pandemic began in the spring of 2020 and has become even more fierce since then with heightened demand and almost no inventory. The best homes across all of Cambrian are selling quickly and with multiple-offers.

An explanation of “months of inventory”

What does “months of inventory” mean? This figure references how long it would take to sell a property if homes continued to sell and close at the current pace with no new inventory coming on the market. A good analogy is to consider a bathtub which drains. If you add no new water to the tub, how long will it take to empty out?

The months of inventory is sometimes called the absorption rate. The question is simple: how long will it take for the current inventory of homes for sale to get absorbed by the home buyers purchasing them? It doesn’t have to be calculated by months. It could be in days, weeks, or years. But months is probably most common.

The months of inventory for any part of the real estate market can vary, depending on many factors, including age of home, house size, lot size, and school district, whether or not there’s a pool, and many other things. It can be very useful to understand this metric when selling a Silicon Valley home. I’ve done market numbers crunching tied to the specific characteristics of a property (say, small yard with pool or big yard with no pool) to find the impact of those characteristics on the probability that a home will sell – or how fast.

The Cambrian area of San Jose’s months of inventory as a whole, and in one price point

Cambrian was once an enormous zone of the Santa Clara Valley. Today we mostly think of it as within San Jose in the 95124 and 95118 zip codes. Part of it is adjacent to Campbell – a very tiny sliver is IN Campbell, and a tinier still area is in San Jose and within the Campbell School Union District! However most of this area is in one of three elementary school districts: Cambrian, Union, or San Jose Unified.

Here’s the breakdown of the charts below – first, sales and active listings for single family homes in ALL of Cambrian (MLS area 14 for my Realtor readers) and then by elementary school district. Below that, we will narrow this down to active and sold listings only in a price range of $900K – $1.2M, the entry-level price point for single family homes in this market. The part of this area within Campbell Elementary is so small that the numbers are usually not statistically useful (no offense to the Campbell school residents), and frequently there is no usable data for it anyways.

The Latest Update: February 25, 2022

Please have a look at the latest chart. While Cambrian Elementary has the fastest MOI, the majority of sales and listings are happening in the highly sought after Union school district! Once again San Jose Unified holds the majority of the lower-price market, practically monopolizing it on our chart. That said, there’s almost nothing selling in that price bracket any more, and all 4 sales in the last 60 days went over $1M. All areas are showing extremely fast turnover with market absorption remaining below 1 month across the board.

Cambrian MOI by school district 0-60day 02-25-2022


Homes are flying off the market this winter. A majority of sales and active inventory are coming from the Union Elementary School District, followed by San Jose Unified with roughly half the sales and inventory. On the other hand, the Cambrian Elementary District has fewer sales and active inventory, but is a very active market (currently the second fastest MOI overall) and is significantly hotter than it has been in the past few years. Inventory remains low and struggles to keep up with the high levels of demand fueling a hot seller’s market in San Jose’s Cambrian district.


Below we have past charts for comparison. I usually do this analysis a few times a year, and it is good to see the long view.

First, let’s have a look at the inventory from last summer:

Cambrian MOI July 2021

There was a lot more going on in summer! The ratios are familiar with a majority of sales in the Union district followed by San Jose Unified and then Cambrian. There was also significantly more inventory available in the lower price point, although the majority of that remains in the San Jose Unified district. The overall MOI is not at it’s spring peak, but it’s hotter than even the highly active winter 2022 market!

Now how about spring 2021?

2021-04-19 Cambrian MOI

April 2021 was a red hot spring market! The Union Elementary School District still has the greatest volume of inventory and sales overall, and San Jose Unified is the clear leader in the entry-level market. Once again, the Cambrian Elementary District is a smaller part of the market with high activity (the MOI is almost as fast as the Union market) and is closest to our Feb 2018 analysis.

The market has been hot for a long while, but how was it in spring 2020 after the start of the pandemic in California?

Cambrian MOI April 16, 2020

This chart shows data gathered mid-April 2020, one month after the shelter in place order began. Although inventory is low, we can tell that the most sales overall are happening in the Union Elementary district, but that the most sales in the entry-level $900K – $1.2M price point are happening in the San Jose Unified elementary school district. Both of these are also where the inventory is highest (though in the entry-level price tier, inventory is equal in the San Jose Unified and Cambrian Elementary districts).

The winter of 2019-2020:

Cambrian MOI 2020 January 29

Above we have data gathered in late January 2020. The hottest markets at that time, both overall and within our price band, was the Union Elementary district. The Cambrian Elementary area has the most available homes for sale, but is the slowest to move. That being said, even the slowest market is still red hot with market absorption a little over a month.


Now let’s go back a little farther. The first is from late June of 2019:

Cambrian months of inventory by elementary school district as of 2019-6-27

Cambrian months of inventory by elementary school district as of 2019-6-27

Surprisingly, the MOI are slower in June than they were the next January. Normally spring and summer are hotter than the winter market! But inventory is much higher, which fits the seasonal trend. Union Elementary is still the fastest.

Next, from February 14, 2018.

I highlighted the San Jose Unified Elementary School District in both blocks as the lowest MOI. You’ll see from the other charts that the fastest market shifts around, but usually falls in either Union Elementary or SJ Unified districts which also have the largest inventory and sales. Aside from Campbell, which has numbers too small to register a MOI, these are the hottest tickets in the district.

Next,  early January 2018.

In this chart, it’s the Union Elementary School District in both charts with the lowest MOI.

Lastly, the the numbers from September 2017 for comparison:

How to Use This Data

The message I’d like to convey is this: you can read about information for your part of Silicon Valley, or your city or zip code, but it’s not until you drill things down to an area that closely matches your own home will you have a better sense of your own home’s “real estate marker.” It’s never “how is the market?” so much as “how’s the market for YOUR home – or the one you want to buy?”

Years ago, I had a Willow Glen listing where the whole back yard was the pool. I did a study on the months of inventory and learned that pools in properties with that lot size took substantially more time to be absorbed. Likewise, I had a Los Gatos estate property on an acre of land, and the reverse was also true: the months of inventory showed that large lots on $2 million and up homes for sale did not sell nearly as well without a pool.

The math is simple: using the same criteria, divide the number of active listings by those of homes sold in the last 30 days. The criteria can be anything you like – a property’s size, location, number of bathrooms, price, age, etc. Often I include approximately the same home and lot size together with the school district. That usually provides much more accurate info on “how’s the market” as compared to just getting it by zip code alone.

Buying or Selling in Cambrian and Beyond

If you are looking to buy or sell a home in Cambrian, or anywhere in San Jose or Santa Clara County, this kind of information is really important. It is not hard to do, but very few real estate agents will provide this information before you list or before you make the final determination on the list price of your home.

Looking for a good Silicon Valley Realtor who will get you that extra data? Please call or email me. I would love to chat to see about possibly working together.

Want to check the school district for a Silicon Valley home? I recommend as a resource.