If you’ve ever driven down Casa Loma Avenue in Yorba Linda, you’ve seen it. The building doesn't scream for attention like a stadium, but the Thomas Lasorda Jr Field House is basically the heartbeat of indoor sports in this part of Orange County. It’s a massive 11,000-square-foot facility that handles everything from high-stakes youth basketball tournaments to senior fitness classes and private birthday parties.
Honestly, most people just call it "The Field House." But there is a lot more going on inside those walls than just the squeak of sneakers on hardwood. It’s a joint-use facility, meaning the city of Yorba Linda and the Placentia-Yorba Linda Unified School District (PYLUSD) actually share the keys.
The Story Behind the Name
You can't talk about this place without mentioning the name on the front. Tommy Lasorda is a Dodgers icon, a Hall of Famer, and a man who "bled Dodger blue." But the field house is actually named in honor of his son, Thomas Lasorda Jr. (often called "Spunky"), who passed away in 1991. The Lasorda family lived in nearby Fullerton for decades, and their ties to the local community run deep.
Naming a sports facility after a family member isn't just about a plaque; it’s about a legacy of community involvement. While the elder Lasorda was busy winning World Series titles, the family remained local fixtures. This facility serves as a living tribute to that connection. It’s a reminder that even for global sports legends, home is where the community plays.
What’s Actually Inside?
Size matters when you're trying to schedule six different volleyball games at once. The Thomas Lasorda Jr Field House features an 11,000-square-foot gymnasium. That is big enough to house two full-size basketball courts or three volleyball courts simultaneously.
The floors are high-grade wood. The bleachers are retractable, allowing for a massive spectator capacity of 1,679 people. That’s a huge number for a municipal gym.
- The Gymnasium: 11,000 square feet of multi-use space.
- Multi-Purpose Room: A 2,500-square-foot room used for meetings and smaller classes.
- The Divider: A retractable curtain that can bisect the gym into two equal sections.
It’s not just for kids, though. If you check the current winter 2026 schedule, you'll see adult basketball leagues for both men and women running through late March. The Men's Thursday night league and Women's Tuesday night league are local staples. It's where the "weekend warriors" go to prove they’ve still got a jump shot.
Who Gets to Use It?
This is where it gets a little complicated for the average visitor. Because of the joint-use agreement with the school district, the public can't just walk in at 10:00 AM on a Tuesday.
Monday through Friday, from 7:30 AM to 5:00 PM, the facility is strictly for school-related activities. If summer school is in session, the school has it until noon.
After those hours? It’s all city.
The City of Yorba Linda Parks and Recreation Department takes over for the evenings and weekends. This is when the contract classes—like tennis, pickleball, and basketball—kick off. If you’re looking to rent it out, the rates vary quite a bit. Residents pay around $58 an hour for the gym, while non-residents or commercial entities can pay up to $123 an hour.
The Adventure Playground Connection
One of the coolest things about the Thomas Lasorda Jr Field House location is what sits right next to it. In 2023, the city finished a massive renovation of the Adventure Playground.
It’s not your typical playground with a plastic slide and some swings. We’re talking about a zipline, a massive waterslide, a splash pad, and a treehouse structure. There is even a wiffle ball field right there.
Families often use the Field House as their "home base" for parking or using the restrooms before heading over to let the kids go wild in the mud pit. It makes the whole area at 4701 Casa Loma Avenue a one-stop-shop for a Saturday afternoon.
Getting There and Staying Safe
Parking is free, which is a relief in Southern California. You can find spots at the Field House itself, or at the nearby Hurless Barton Park and Yorba Linda Community Center if things get crowded during a tournament.
A few things to remember if you’re heading there:
- Hours: Most rentals and public programs have to wrap up by 10:00 PM.
- Clean-up: If you’re renting the multi-purpose room for a party, you’ve got to be out by 10:30 PM.
- Footwear: Don't be the person who tries to walk on the gym floor in muddy boots after a rainstorm. Non-marking athletic shoes are a must.
Making the Most of the Facility
If you want to get involved, don't just show up and hope for an open hoop. Most of the programs require pre-registration through the Yorba Linda "YLRecOnline" portal. Whether it’s a high-energy volleyball league or a quiet meeting in the 2,500-square-foot multi-purpose room, the staff at the front desk (714-961-7192) are the ones who actually keep the gears turning.
The Thomas Lasorda Jr Field House represents a specific kind of suburban excellence. It’s well-maintained, heavily used, and deeply tied to the history of the families who live here. It isn't just a gym; it’s where the community actually meets.
Actionable Next Steps:
- Check Availability: If you are planning a local event, visit the Yorba Linda Parks and Recreation website to download the rental packet, as a two-hour minimum is required for all gymnasium bookings.
- Register for Leagues: Look into the "Adult Sports" section of the city's activity guide if you want to join the winter or spring basketball circuits.
- Coordinate with Adventure Playground: If you have kids aged 5-12, plan your visit for a Saturday morning when you can utilize the Field House facilities before the Adventure Playground gets hit with the midday crowds.