Castro Valley, CA Airbnb Market Data, Statistics, and Occupancy Rates

Castro Valley Short-Term Rental Market Overview

Castro Valley sits in the East Bay hills of Alameda County, offering proximity to both San Francisco and Silicon Valley — a draw for guests seeking a quieter alternative to city stays. With just 42 active Airbnb listings and an average annual revenue of $25,988 per listing, this is a small, relatively concentrated market where high home values ($1,471,868 average) compress returns. The 138% year-over-year growth in listings signals rising investor interest, though the below-average revenue-to-price ratio means careful deal sourcing is essential to generate meaningful cash flow.

Key Market Statistics

According to Rabbu market data, the Castro Valley short-term rental market shows:

Data sources: Rabbu proprietary analytics as of Apr, 27 2026 and Zillow Home Value Index (ZHVI) as of Apr, 27 2026.

Why Investors Consider Castro Valley

Castro Valley appeals to investors seeking a foothold in the premium East Bay market, where limited supply and Bay Area demand create potential for well-positioned properties despite high entry costs.

Expert Market Assessment

"Castro Valley presents a competitive but challenging investment landscape. The ROI score of 37 out of 100 reflects the tension between genuine demand — occupancy beats the state average and listing growth confirms investor appetite — and the reality of very high property prices that squeeze the revenue-to-price ratio well below average. Revenue follows a clear seasonal arc, peaking in August at $2,763 and dipping to roughly $1,559 in January, which means cash flow can be uneven across the year. Investors who source deals below the median home value or target higher-earning 3-bedroom configurations will be best positioned to make the numbers work."

— Rabbu Market Analysis Team

Key Airbnb Metrics & Trends in Castro Valley

Average revenue by month in Castro Valley

Revenue peaks in August at $2,763 and bottoms out in January at $1,559, creating a pronounced summer-heavy seasonal pattern with roughly 77% more revenue in the best month versus the weakest. The extended peak from June through October suggests that warm-weather months and early fall events sustain demand beyond a narrow summer window.

Active Airbnb listings by property size in Castro Valley

One-bedroom units dominate the supply with 18 of 42 total listings (43%), followed by 9 two-bedroom and just 6 three-bedroom properties. The scarcity of 3-bedroom listings could represent an opportunity for investors, especially given that larger units command significantly higher rates and revenue.

Average daily rate (ADR) by property size in Castro Valley

ADR scales dramatically with size — from $97 for 1-bedrooms to $203 for 2-bedrooms and $617 for 3-bedroom properties. The jump to 3 bedrooms represents a 3x premium over 2-bedrooms, suggesting strong willingness among guests to pay for space, making larger configurations particularly lucrative on a per-night basis.

Average RevPAN by property size in Castro Valley

Three-bedroom listings deliver the highest RevPAN at $170, more than double the 2-bedroom figure of $84 and over three times the 1-bedroom's $49. Despite lower occupancy rates, the outsized daily rates for larger properties more than compensate, making 3-bedroom units the clear RevPAN leaders.

Average occupancy rates by property size in Castro Valley

Occupancy drops sharply as property size increases: 1-bedrooms fill 51% of available nights, 2-bedrooms manage 42%, and 3-bedrooms sit at just 28%. While the smaller units offer more predictable booking patterns, the lower occupancy on larger properties is offset by their substantially higher nightly rates and overall revenue.

Average monthly revenue by property size in Castro Valley

Three-bedroom properties earn $3,677 per month on average — nearly 2.7 times the $1,381 generated by 1-bedroom listings and about 53% more than 2-bedrooms at $2,396. For investors focused on maximizing gross revenue, larger units clearly outperform despite their lower occupancy rates.

Average annual revenue by property size in Castro Valley

Annual revenue ranges from $16,581 for 1-bedroom listings to $44,131 for 3-bedroom properties, with 2-bedrooms landing at $28,755. The 3-bedroom configuration offers the strongest gross revenue potential, though investors should weigh this against higher acquisition and maintenance costs in Castro Valley's expensive housing market.

Most common amenities for Airbnb listings in Castro Valley

Parking is universal at 100% of listings — essential in a suburban East Bay market — while kitchens (98%), self check-in (81%), and laundry (76–79%) form the baseline guest expectation. Outdoor amenities like patios, backyards, and BBQ grills appear in 41–62% of listings, signaling that homes with private outdoor space have a competitive edge in attracting guests.

Understanding Castro Valley's ROI Score: 37/100

Rabbu's ROI Score is a proprietary metric that evaluates short-term rental investment potential based on multiple factors.

How the ROI Score is Calculated

What This Means for Investors

Castro Valley's ROI score of 37 out of 100 places it in the 'Competitive Opportunity' band, signaling that while demand fundamentals are present, the economics require careful underwriting. The primary drag is a below-average revenue-to-price ratio — average annual revenue of roughly $26,000 against home values near $1.5 million makes it difficult to generate strong cash-on-cash returns without below-market acquisition pricing. Occupancy stability, market growth, and supply/demand balance all rate as average, so investors should pair this data with thorough local regulatory research and focus on deal-specific opportunities rather than broad market bets.

Short-Term Rental Regulations in Castro Valley

Understanding local STR regulations is essential before investing in Castro Valley. Here's the current regulatory landscape:

Permit Requirements

Short-term rental operators in Castro Valley, which falls under unincorporated Alameda County in California, may need to obtain a business license or STR permit from the county. Investors should verify current registration and permitting requirements directly with the Alameda County planning department before listing a property.

Key Restrictions

Common restrictions in California STR markets can include occupancy limits, minimum stay requirements, noise and parking rules, and potential caps on the number of permits issued. HOA restrictions may also apply in certain neighborhoods, so investors should review any CC&Rs associated with a property in addition to county-level rules.

Tax Obligations

California short-term rental operators are typically subject to Transient Occupancy Tax (TOT), and Alameda County may impose additional local taxes. Platforms like Airbnb often collect and remit these taxes on behalf of hosts, but operators should confirm their specific obligations with the county tax assessor.

Regulations subject to change. Always verify with local authorities before purchasing. A Rabbu partner agent specializing in Castro Valley can provide current regulatory guidance.

Future Outlook & Long-Term Forecast

"Over the next 12–18 months, Castro Valley's STR market is likely to see continued supply growth as investor awareness builds, which could put modest downward pressure on occupancy unless demand keeps pace. Seasonal patterns suggest summer months (July–August) will remain the revenue peak, with ADR holding steady or ticking up 1–3% given the area's appeal to Bay Area travelers. Occupancy should remain in the 43–47% range market-wide, though operators who optimize pricing and amenities may outperform. Investors should watch whether the rapid listing growth stabilizes, as supply doubling again could meaningfully erode per-listing revenue."

— Rabbu Market Analysis Team

Frequently asked questions about Airbnb in Castro Valley, CA

What is the average Airbnb occupancy rate in Castro Valley?

The average Airbnb occupancy rate in Castro Valley is currently 45%, which slightly exceeds the California state average of 43%. Occupancy varies significantly by property size — 1-bedroom listings average 51%, while 3-bedroom properties average 28%. This suggests smaller units stay booked more consistently, though larger homes compensate with much higher nightly rates.

How much do Airbnb hosts make in Castro Valley?

Airbnb hosts in Castro Valley earn an average of $2,165 per month and approximately $25,988 per year based on trailing 12-month booking data. Revenue varies substantially by property size: 1-bedroom listings average $16,581 annually, 2-bedrooms bring in about $28,755, and 3-bedroom properties lead at $44,131 per year. Individual results depend on pricing strategy, property quality, and guest experience.

Is Castro Valley a good market for Airbnb investment?

Castro Valley carries an ROI score of 37 out of 100, categorized as a 'Competitive Opportunity.' Strong demand and limited supply (just 42 listings) are positives, but high average home values of nearly $1.5 million push the revenue-to-price ratio below average. Investors who can acquire property below the median price point or optimize for larger configurations may find viable returns, but this market rewards selective deal sourcing over broad-based buying.

What is the average daily rate (ADR) for Airbnb in Castro Valley?

The average daily rate across all Castro Valley Airbnb listings is $301, which is well below the $551 California state average — likely reflecting the market's mix of smaller units. ADR scales sharply with property size: 1-bedroom units average $97, 2-bedrooms average $203, and 3-bedroom properties command $617 per night.

Are short-term rentals legal in Castro Valley?

Castro Valley is an unincorporated community within Alameda County, California, so STR regulations fall under county jurisdiction rather than a city government. Operators may need to register their rental or obtain a business license. We recommend verifying current requirements directly with Alameda County planning and tax offices, as regulations can evolve. HOA rules may also apply depending on the specific property.

When is peak season for Airbnb in Castro Valley?

Peak season in Castro Valley runs from June through October, with August delivering the highest average monthly revenue at $2,763. The shoulder months of May and November also perform reasonably well. January and February are the slowest months, averaging around $1,559–$1,579, creating a roughly $1,200 spread between peak and off-peak monthly earnings.

How many Airbnbs are there in Castro Valley?

As of April 2026, there are 42 active Airbnb listings in Castro Valley. The market has seen significant growth, with a 138% year-over-year increase in active listings. The supply skews heavily toward smaller properties, with 18 one-bedroom listings, 9 two-bedroom listings, and 6 three-bedroom listings.

How is Airbnb revenue calculated in Castro Valley?

The annual and monthly revenue figures for Castro Valley are derived from the trailing 12 months of historical booking performance for active comparable Airbnb listings in the market — they are not forward-looking projections. We average each comparable listing's actual revenue per available night (RevPAN) by month over the past year, remove regional outliers, and roll the results up to a market-level historical average. Because each month uses its own historical data, the figures naturally reflect seasonal peaks and slower periods. Individual results can vary based on property quality, pricing strategy, and operational management.

About Rabbu Market Data

Rabbu provides Airbnb and short-term rental market data and statistics across the United States. Our mission is to empower investors with accurate insights and easy-to-use tools, so they can confidently identify and act on the best opportunities in the Airbnb market.

What this data includes

• Regularly updated active Airbnb and STR listing counts for Castro Valley and surrounding markets
• Occupancy rates and average daily rate trends across property sizes
• Revenue and yield metrics including RevPAN, monthly, and annual averages based on trailing 12-month data
• Popular amenity prevalence data across active listings
• Home value benchmarks sourced from the Zillow Home Value Index (ZHVI)

Sources and disclaimers

Rabbu proprietary analytics as of Apr, 27 2026 and Zillow Home Value Index (ZHVI) as of Apr, 27 2026. Revenue projections are estimates based on comparable properties and do not guarantee future performance. Data reflects trailing 12-month averages as of April 2026 and may not capture very recent market shifts. Local regulations, HOA rules, and tax requirements can change; always verify with the appropriate local authorities before investing.