3654 42nd St
3654 42nd St,
San Diego, CA 92105
$1,995
1 Bed
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 December 2025, the average apartment rent in Castle is $991 for a studio, $1,204 for one bedroom, $1,540 for two bedrooms, and $1,904 for three bedrooms. Apartment rent in Castle has increased by 1.2% in the past year.
Studio
347 sq ft
Average Sq Ft
$991/month
Average Rent
1 BR
398 sq ft
Average Sq Ft
$1,204/month
Average Rent
2 BR
453 sq ft
Average Sq Ft
$1,540/month
Average Rent
3 BR
743 sq ft
Average Sq Ft
$1,904/month
Average Rent
Very Walkable
out of 100 WalkScore® Rating
If you enjoy walking, you’ll enjoy renting in this area! It’s a very walkable neighborhood.
Good Transit
out of 100 TransitScore® Rating
The area around this property has good transit with many nearby transportation options.
Bikeable
out of 100 BikeScore® Rating
While there’s some bike infrastructure in this area, you’ll still need a car for many errands.
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† 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 November 2025.