Bounce House Rentals in Wentzville, MO
Professional delivery and setup on bounce houses, water slides, obstacle courses, and more — serving Wentzville, St. Charles County, and surrounding communities in Missouri since 2019.
📍 Serving Wentzville, Lake St. Louis, O'Fallon, St. Peters, Troy, Warrenton & all of St. Charles County · Delivery fee calculated at checkout
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Every rental includes professional delivery, setup, and pickup — all you do is enjoy the party.
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Add the finishing touches that take your event from fun to unforgettable.
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2019 Wright City, MO
Wentzville's Homegrown Bounce House & Party Rental Company
Backyard Party Rentals was born right here in Wright City in 2019, when Tyler and Amanda Koester started with just two units — a bounce house and a slide — with no big plans, just a desire to bring some fun to family and friends. Word spread fast, the business grew faster, and today we're proud to be one of the most trusted inflatable rental companies in St. Charles County.
As parents of three, we understand exactly what it takes to pull off a great event. Every rental comes with professional delivery, setup, and a crew that genuinely cares about your day going perfectly.
"We started with two units and a dream. Five years later we're still just trying to throw the best parties in St. Charles County."
— Tyler & Amanda Koester, Founders · Backyard Party Rentals LLCWhy Wentzville Families Choose Backyard Party Rentals
We've been doing this since 2019. Here's what makes us different from every other bounce house rental company in St. Charles County.
Cleaned & Sanitized — Every Single Time
Every inflatable is deep-cleaned and sanitized before each rental using commercial-grade products. Bounce floors, slides, stairs, handles, and netting. No exceptions, no shortcuts.
Every rental, every timeDelivery, Setup & Pickup Included
Our crew delivers on time, sets up your rental, walks you through safety guidelines, and comes back to take it all down. It's all part of your rental — no surprise charges on delivery day.
Included with every rentalFully Licensed & Insured
We carry full liability insurance and provide Certificates of Insurance for Wentzville schools, churches, Fort Zumwalt parks, and any venue requiring documentation. Just ask — it's free.
COI available at no chargeBook Online in Under 5 Minutes
Browse real inventory, check live availability for your date, and reserve 24/7 without calling anyone. You'll see the complete total — including delivery — before you pay a single dollar.
No hidden fees. Ever.Hassle-Free Weather Reschedule Policy
Wentzville summers can be unpredictable. If rain threatens your event, reach out the night before and we'll move your rental at no charge. Zero risk, zero stress.
Zero-risk bookingReal Local People. Real Answers.
When you call, you're talking to Amanda — not a call center, not an automated system. We're your Wright City neighbors and we treat every customer like one.
Family-owned since 2019Bounce House Rentals for Every Event in Wentzville
From backyard birthday parties to school field days to corporate picnics — we've got the right inflatable for every occasion in St. Charles County.
Birthday Parties
The centerpiece of every great birthday party in Wentzville. Pick a bounce house, add a water slide for summer, and let the kids burn energy for hours while you relax.
School & Daycare Events
We're trusted by schools throughout Wentzville and St. Charles County for field days, end-of-year celebrations, carnivals, and fundraisers. We carry full insurance and COI.
Church & Community Events
From Vacation Bible School to fall festivals to community picnics at Wentzville Park, we help churches and nonprofits create memorable events for families of all ages.
Corporate & Company Events
Employee picnics, company outings, and customer appreciation events. We've done it all across St. Charles County and can scale to any size gathering.
Park & Outdoor Events
Planning a party at Wentzville Park, Rotary Park, or any of St. Charles County's parks? We bring the equipment, stake everything securely, and handle teardown.
Graduations & Milestone Events
Celebrate the big moments with something memorable. Graduation parties, gender reveals, family reunions — if you're gathering people together in Wentzville, we can help make it epic.
What Wentzville & St. Charles County Families Are Saying
Every review below is from a real customer in our community. This is what 5-star service looks like.
We deliver throughout Wentzville, Lake St. Louis, O'Fallon, St. Peters, Troy, Warrenton, Wright City, and all surrounding communities in St. Charles, Warren, and Lincoln counties in Missouri. Delivery and setup are included in your rental price within our standard service area — enter your ZIP code in our service area checker to confirm.
Spring and summer Saturdays in the Wentzville area book out 2–4 weeks ahead — sometimes more for our most popular units like water slides and wet combos. If you see your date available on our site, we strongly recommend locking it in. We can't hold dates without a reservation, and popular weekends disappear quickly.
Your rental includes professional delivery, setup, and pickup. Delivery fee is calculated at checkout based on your address — you'll see the complete total before you pay.
We offer a hassle-free weather reschedule policy. Wentzville summers bring unpredictable weather — we get it. If bad weather is forecast for your event day, just reach out to us the night before and we'll move your rental to a new date at no charge. We want your event to be a success and we'll never penalize you for the weather.
Every single time — no exceptions. Every inflatable is thoroughly cleaned and sanitized before each rental using commercial-grade sanitizing products. We clean all interior and exterior surfaces including bounce floors, slides, stairs, handles, and entrance flaps. As parents of three ourselves, we wouldn't have it any other way.
Absolutely. We carry full liability insurance and provide Certificates of Insurance (COI) upon request at no extra charge. Many Wentzville-area schools, churches, Fort Zumwalt parks, and other venues require documentation before allowing inflatables on their property — just let us know when booking and we'll have it ready.
Our inflatables set up great on grass, concrete, asphalt, and indoor gym floors. Grass is most common in the Wentzville area — we use ground stakes to anchor everything securely. For hard surfaces or park locations, we use sandbags. Just let us know your setup surface when booking so we bring the right anchoring equipment.
Bounce House Delivery Across Wentzville & St. Charles County
We deliver bounce houses, water slides, obstacle courses, tents, and party rentals throughout Wentzville, Lake St. Louis, O'Fallon, St. Peters, Troy, Warrenton, Wright City, and every community in St. Charles, Warren, and Lincoln counties in Missouri. Professional delivery, setup, and pickup are included with every rental — no surprises at checkout.
