Dear Neighbor · Monthly market report
Castro Valley market report, September 2026.
This is the kind of plain-language market update Tim has mailed to Castro Valley neighbors for years. The short version: homes in Castro Valley are selling fast, and pricing it right from day one matters more than ever.
From the desk of Tim Fiebig
Castro Valley
- Median home sale price
- $1.1M
- Average days on market
- 29 days
- Homes sold, past 12 months
- 471
Sources: public market data (Homes.com), September 2026. Not an appraisal.
What the September numbers mean.
Castro Valley remains a fast-moving market compared with the rest of the country. Here is how Tim reads each number, and what it means for buyers and sellers.
Median sale price near $1.1M
The median home in Castro Valley sells for around $1.1 million, down roughly 6% from a year ago (per Homes.com). Prices have eased from the highs, which can open the door for buyers who were previously priced out. For sellers, it reinforces the importance of pricing against real recent comps, not past peak prices.
Homes sell in about 29 days
Well-priced homes in Castro Valley are going under contract in about 29 days on average, versus 56 days nationally. That means a well-prepared, correctly priced home still moves quickly, and a home priced too high can linger and lose its best shot at the market.
471 sales in the past 12 months
Castro Valley continues to produce steady sales volume: about 471 homes in the past year. Consistent activity means buyers have choices and sellers have an active pool of qualified buyers, provided the home is marketed to the right audience from the start.
If you are selling
Price it right, prepare it well, market it wide.
In a market where the median is down about 6% from last year, the biggest mistake is pricing against last spring and then chasing the market down with reductions. Tim prices from today’s real sales, tells you which improvements pay off, and launches with professional marketing from day one.
See the selling advantageIf you are buying
More room to negotiate, less time to decide.
Homes spending only about 29 days on market don’t wait long. The good news: softened prices and more inventory mean buyers can negotiate on condition and terms. A fast, local real estate agent who watches for pre-market homes gives you an edge.
Start your buyer searchThe fine print
Where these numbers come from.
Figures are compiled from publicly reported market data (Homes.com market trends for Castro Valley, September 2026). Market statistics vary by source and change month to month. This report is market information, not an appraisal, and should not be treated as an exact value of any specific home. Tim updates this report monthly, the same rhythm as his printed "Dear Neighbor" postcards.
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