3069 40th St
3069 40th St,
San Diego, CA 92105
$3,950
4 Beds
Castle is a small neighborhood in Mid-City San Diego and is a great choice for anyone seeking a central location for their next home. Along with its own parks, Castle is near Balboa Park, home of the San Diego Zoo, several museums, and more. Explore the locally owned shops or international grocery stores in Castle or check out the incredible dining scenes on nearby streets like University Avenue and El Cajon Boulevard. Popular shopping hubs like Westfield Mission Valley and Fashion Valley are just five miles away. Attracting even more renters, Castle is convenient to Downtown San Diego and several scenic beaches including Mission Beach and La Jolla Cove. Castle is also known for having more affordable options for rentals compared to other San Diego neighborhoods. The neighborhood has a variety of apartments, houses, and condos available for rent.
As of April 2026, the average apartment rent in Castle is $994 for a studio, $1,215 for one bedroom, $1,554 for two bedrooms, and $1,916 for three bedrooms. Apartment rent in Castle has increased by 1.4% in the past year.
Studio
347 sq ft
Average Sq Ft
$994/month
Average Rent
1 BR
398 sq ft
Average Sq Ft
$1,215/month
Average Rent
2 BR
453 sq ft
Average Sq Ft
$1,554/month
Average Rent
3 BR
743 sq ft
Average Sq Ft
$1,916/month
Average Rent
Explore how walkable, bikeable, drivable, and transit-friendly Castle - San Diego, CA is for everyday living.
Moderately Walkable
Walkability
Some Public Transit
Transit
Exceptionally Drivable
Drivability
Fairly Bikeable
Bikeability
Castle - San Diego, CA offers all daily essentials, but they’re limited to a few main areas.
Supermarket Within a 10 Minute Walk
Groceries
Good Restaurant Variety Nearby
Restaurants
Fair Café Variety Nearby
Cafes
Good Variety of Shops Nearby
Shopping
Castle - San Diego, CA provides green space and wellness resources in certain areas.
Large Amount of Park Space Nearby
Parks
Fair Wellness Amenity Variety Nearby
Wellness
Get a sense of what it’s like to live in Castle - San Diego, CA from everyday activity to noise and nightlife.
Mostly Calm Atmosphere
Vibrancy
Limited Nightlife Variety Nearby
Nightlife
Not Noisy
Quiet Score
3,491
Communities
960,251
Units
891
Cities
718
Communities
198,303
Units
341
Cities
654
Communities
180,071
Units
260
Cities
613
Communities
122,506
Units
243
Cities
581
Communities
129,613
Units
224
Cities
459
Communities
109,207
Units
228
Cities
† Our analysis of utilities, groceries, transportation, healthcare, home prices, and other goods and services is sourced from the Cost of Living Index, a respected benchmark published by the Council for Community and Economic Research (C2ER) that provides a thorough overview of living expenses across different regions.
Rent data is provided by CoStar Group’s Market Trend reports. As the industry leader in commercial real estate information, analytics, and news, CoStar conducts extensive research to produce and maintain a comprehensive database of commercial real estate information. We combine this data with public record to provide the most up-to-date rental information available.
Consumer goods, services, and home prices are sourced from the Cost of Living Index published by the Council for Community and Economic Research (C2ER). The data on this page is updated quarterly. It was last published in February 2026.
Demographic information comes from Neustar and combines detailed address data with U.S. Census and American Community Survey statistics to produce reliable local estimates.