DRE #02250755“I help Bay Area buyers and sellers make confident moves with the latest market data, real local expertise, and the patience to find what's actually right for you, not the fastest close.”
DRE #02250755“I help Bay Area buyers and sellers make confident moves with the latest market data, real local expertise, and the patience to find what's actually right for you, not the fastest close.”
Data through Jul 2026
Castro Valley favors sellers and competition is intensifying. Here's the picture:
Based on 126 homes sold in the 3 months ending July 2026. Includes all residential types (SFH, condo, townhouse, multi-family, and others). Updated weekly.
Data through July 2026
See how prices, monthly costs, and mortgage rates have moved in Castro Valley.
Includes principal, interest, estimated CA property tax (~1.25%), and estimated insurance (~$2,200/yr). HOA fees not included.
The median sale price in Castro Valley is $1.15M — down 2% from $1.18M in September 2021. Over that stretch, the median peaked at $1.30M in June 2022 and bottomed at $977K in January 2023. That's right in line with the area's 5-year average of $1.14M. Each point is the median of a rolling 3-month window of closings, so the curve runs smoother than any single month; the multi-year direction is the signal.
What buyers actually pay has moved more than the sticker price suggests: a typical monthly payment (20% down, principal & interest) is about $5,909 today, up 49% from $3,972 in September 2021. Most of that increase comes from mortgage rates (3.0% then vs. 6.7% now), not prices — at September 2021 rates, today's median would run about $3,882/mo.
Seasonally, the three months ending in August have been the busiest stretch for closings in Castro Valley over the past 5 years (about 153 sales in that window on average, vs. 87 for the stretch ending in February), while competition has run hottest in the stretch ending in May (72% of homes selling over asking on average). That's an average across just 5 observations per month, so treat it as a tendency, not a rule.
Castro Valley favors sellers and competition is intensifying. Buyers should prepare strong offers and expect limited room to negotiate on well-priced listings.
At $1.15M, Castro Valley's median sits about 36% below the Bay Area average of $1.80M. That average is skewed high by ultra-premium peninsula enclaves like Atherton and Woodside, so a more useful frame is that Castro Valley is one of the more accessible corners of the Bay Area.
By home type:
Prices in Castro Valley depend heavily on home type and specific neighborhood. Median sale prices by type:
Individual listings vary widely based on location, size, and condition. The best calibration is to narrow to a few specific neighborhoods you are considering and look at recent sales there.
Castro Valley currently favors sellers:
Buyer strategy: well-priced homes still move quickly, but there is modest room for strong offers. Come in pre-approved with a clear plan.
At $1.15M with 20% down at 6.71%, your estimated total monthly cost is approximately $7,320:
HOA fees are extra. Condo buyers typically budget an additional $300 to $700 per month for HOA, and townhome HOAs run $200 to $500.
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