What Size Bounce House Do I Need?
This is the question we get more than any other, usually in the same breath as “will it even fit in my yard?” The good news: sizing a bounce house is simpler than it looks. You only need three numbers, which are how many kids are coming, how old they are, and how much open space you have.
We have set up hundreds of bounce houses in backyards from Riverside to Irvine, so here is the honest guide we wish every parent had before booking.
The two sizes that cover almost every party
Most of our parties use one of two footprints, and the right pick comes down to age more than headcount.
| Size | Kids at a time | Best for |
|---|---|---|
| 10×10 toddler | Typically 3 to 5 | Ages 1 to 5. First and second birthdays, baby showers with older siblings, soft play pairings. Lower walls, gentler bounce. |
| 13×13 standard | Typically 4 to 6 | Ages 3 to 12. The classic birthday party pick. Our white, pink, and purple pastel units are this size. |
| Bubble house dome | Typically 4 to 6 | Gender reveals, princess parties, and photo-heavy events. The clear dome is more about the look and the pictures than max capacity. |
| Water slides & obstacle courses | Varies by unit | Ages 6 and up, bigger crowds, and parties where older kids would get bored in a standard bouncer. |
One thing that surprises people: “kids at a time” is not the same as “kids at the party.” Kids naturally rotate. They bounce hard for ten minutes, run off for cake and juice, and come back. A 13×13 unit comfortably serves a party of 15 to 20 kids over an afternoon, because they are almost never all inside at once.
Match the size to ages, not just the guest count
Safety guides across the industry agree on one rule above all others: kids of similar size should bounce together. A 2 year old and a 10 year old in the same bouncer at the same time is how bumps happen, because the big kid’s bounce launches the little one. That is why age matters more than headcount when you pick a size.
- 1Mostly under 5?Go with the 10×10 toddler unit. The gentler bounce and smaller footprint are designed for little legs, and it fits in smaller yards too.
- 2Mixed ages from 3 to 12?The 13×13 is your answer. If your budget allows, pairing it with a soft play or ball pit setup gives the toddlers their own zone so the big kids can bounce freely.
- 3Mostly 6 and up?Consider a water slide or obstacle course instead of, or alongside, a standard bouncer. Older kids stay engaged much longer when there is something to race or climb.
- 4More than 20 kids?Two units beat one giant one. Splitting the crowd by age keeps the line short and the bouncing safe, and it is usually the setup we recommend for school and church events.
Will it fit in my yard?
A 13×13 bounce house needs roughly a 15×15 foot patch of open space, because you want a couple of feet of clearance on every side plus room for the blower behind it. Overhead, look up before you book: you typically need 15 feet or more of clearance with no tree branches or power lines hanging over the spot.
The other thing to measure is the path to the yard. Bounce houses arrive rolled up on a hand truck, so a standard side gate is usually fine, but a very narrow walkway or steep stairs is worth mentioning when you book. Plenty of Irvine and Corona backyards are on the cozier side, and that is exactly what the 10×10 was made for.
We set up on grass (staked), turf, or cement and pavement (sandbagged). You just pick your surface when you build your quote, and we bring the right anchoring either way.
Your 60 second sizing checklist
- Count the kids: under 10 guests, either size works; 10 to 20 guests, go 13×13; more than 20, consider two units.
- Check the ages: mostly under 5 means the 10×10 toddler unit; mixed or older means the 13×13.
- Measure the space: about 15×15 feet of flat, open ground for a 13×13, less for a 10×10.
- Look up: no branches or wires above the setup spot.
- Know your surface: grass, turf, or concrete all work; we anchor each one differently.
When in doubt, size up (or add a second zone)
If you are torn between the two, here is our honest take. Nobody has ever been upset that the bounce house felt roomy. Kids grow into the 13×13 over the course of a party, and it gives adults an easier line of sight inside. The only time we steer families smaller is when every bouncer is a toddler, because little kids genuinely do better with lower walls and a softer bounce.
And if your guest list keeps growing (Southern California parties have a way of doing that), adding a soft play and ball pit zone next to the bouncer is often smarter than jumping to a bigger inflatable. The babies get a safe spot, the big kids get the bouncer, and the parents get to actually sit down.
Weekends in Riverside and Orange County typically book 2 to 3 weeks out, so once you know your size, it pays to lock in your date. If you are nearby, our Irvine and Riverside pages show what delivery looks like in your area.
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