Make Your Mercer Island Event Pop with Party Baby
From playful garlands to full photo-ready backdrops, our custom balloon décor transforms your space into a celebration. Designed to match your style and delivered locally — one balloon at a time.
Elevate Your Event with Premier Party Rentals on Mercer Island
Elegant rentals. Discreet delivery to Mercer Island homes and venues.
Party Baby Seattle offers upscale, family-focused party rentals tailored for Mercer Island’s private residences, estates, and community venues. Whether you’re planning a lakeside birthday, an elegant garden celebration, or a gathering at the Mercer Island Community Center, our team delivers custom setups that fit seamlessly into driveways, lawns, patios, or event halls — always with white-glove service and stress-free execution.
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Modern, stylish setups for every space
Designed for Mercer Island homes, gardens, and private venues.
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Customizable themes and color palettes
Tailor your event to match your home aesthetic, theme, or school colors.
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Local delivery & hassle-free setup
We deliver across Mercer Island with white-glove setup and teardown included.
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From quote to cleanup — stress-free
Our concierge-style service ensures a seamless experience from start to finish.
At Party Baby Seattle, we provide upscale party rentals tailored for Mercer Island families. From milestone birthdays to backyard celebrations, we ensure every event is beautifully executed.
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SOFT PLAY RENTALS
Modern Soft Play rentals for Mercer Island. Designed for stylish, safe celebrations at home or in community venues.
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BOUNCE HOUSE RENTALS
Stylish Bounce House rentals for Mercer Island. Chic, safe options for estate lawns, driveways, or parks.
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BUBBLE HOUSE RENTALS
Mercer Island’s Instagram-worthy Bubble House. Floating balloons, clear dome, and photo-ready fun for kids.
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BALL PIT RENTALS
Luxe Ball Pit rentals for Mercer Island — custom colors, optional monogram decals, and thousands of balls.
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Balloon Décor
Custom Balloon Décor for Mercer Island events. Elegant garlands and polished installs for birthdays, schools, or at-home parties.
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Corporate Events
Fully insured and licensed. We support Mercer Island schools, nonprofits, and home-hosted events with professional-grade rentals.
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Ready to Plan Your Mercer Island Event?
Elegant rentals. Easy planning. Mercer Island delivery included.
What Our Customers Are Saying
This was a game changer for my son's 1st birthday with a ton of toddlers running around! This company was amazing from start to finish and I will be using them again in the future. If you are hesitant to book, just do it! The best money spent for a party with a ton of kids
We had a fantastic experience with Party Baby: We used them for our two year olds birthday party. The process was smooth and the set up was gorgeous. The littles had a blast. I couldn’t have asked for more. 100% recommend.
Wonderful job! Our celebration for our grandson's first birthday was hugely successful due in part to Party Baby Soft Play. All the kids enjoyed it as well as their parents! Thank you for everything!
Best idea ever to have Party Baby Seattle come setup a soft play area for the little ones celebrating in this birthday. There's too many things that one as parents try to figure out and this was one less thing I had to worry about. There was a place where they had so much fun together and it was safe and beautiful. The team was super sharp and on time, very swiftly setup and gave us recommendations of where to put it. Then just as swiftly as they setup they also came after the rental time expired and also left the area just as they found it.
The team is super professional and I would gladly do business with them again, everyone that came to the party was left in awe and wanted something like this for their future party. You don't even need to spend a lot on decorations the setup itself was decoration enough.
The team is super professional and I would gladly do business with them again, everyone that came to the party was left in awe and wanted something like this for their future party. You don't even need to spend a lot on decorations the setup itself was decoration enough.
Phenomenal experience, age appropriate and the kids had a lot of fun!
We used Party Baby soft play for my son’s birthday party and it was a huge hit. The set up was beautiful, safe, and clean! The kids loved it and the parents were impressed!
We used Party Baby Seattle soft play for my daughter's birthday, and it was an amazing experience! The setup was not only safe and clean but also aesthetically pleasing, with a beautifully coordinated color scheme that matched our party theme perfectly. The team was incredibly professional, arriving on time and ensuring everything was arranged beautifully. They were attentive to detail and very friendly, making the entire process stress-free for us as parents.
Our guests loved the play area, and it was clear the kids had an absolute blast! The variety of equipment catered perfectly to toddlers, encouraging them to explore and enjoy themselves safely. If you're planning an event for little ones, I highly recommend Party Baby Seattle. They truly made my daughter's birthday unforgettable, and I am excited to book for my baby's next birthday.
Our guests loved the play area, and it was clear the kids had an absolute blast! The variety of equipment catered perfectly to toddlers, encouraging them to explore and enjoy themselves safely. If you're planning an event for little ones, I highly recommend Party Baby Seattle. They truly made my daughter's birthday unforgettable, and I am excited to book for my baby's next birthday.
My company has worked with Party Baby two years in a row now to have a bounce house at our client's company holiday party! Not only are they extremely professional and organized, they also are always upgrading their packages and providing amazing options. The kids love it, and the attendants are always making sure everyone is safe.
Everything was fantastic! The kids absolutely loved the soft play area and didn’t want to come out. The setup was perfect, clean, and exactly as advertised. The team at Party Baby Seattle was professional, friendly, and handled everything seamlessly, which made the day stress-free for us. The variety of activities kept all the kids entertained and engaged throughout. It was truly the best decision to hire them for my son’s birthday party! Highly recommend for anyone looking to add something special to their event!
Ready to Plan Your Mercer Island Event?
Let us help bring your vision to life — just fill out the form below and our team will be in touch soon.
GET INSPIRED!
Wackadoo! 💥😜
Jacqueline’s 5th Birthday was a total Bluey dream come true 💙🐾
From bubbles to belly laughs, the Mini Bubble House brought the extra to this adorable celebration! 🫧🎉
Want to make your kiddo’s big day just as magical? Book with Party Baby! ✨🎈
#BlueyBirthday #MiniBubbleHouse #KidsParty #PartyRentals
Start your engines—Ayaan is 3! 🏁🔥
This F1 Racing–themed party zoomed into high gear with toddler bumper cars, The Duke bounce house, and custom vinyl decals that brought the track to life! 🏎️✨
From start to finish line, the energy was high and the smiles were nonstop 💥
Ready to throw your little racer the ultimate birthday bash? Book your next party with @partybabyseattle and let’s make magic happen 🎉
🖤 Event Planning & Design - @hudsongreyevents
🤍 Balloons - @hoopla_facepainting_balloons
❤️ Table & Chairs - @partyendsatnine
#Softplay #Bouncehouse #KidsParty #PartyRentals
Spring vibes were in full bloom for Zian & Raina’s birthday bash! 🌸🐣☀️
With our Super Luxe Ball Pit & Slide combo, the fun never stopped 🎉💖 Giggles, jumps, and sweet springtime memories made all day long!
If you’re dreaming of a party that feels like magic ✨—we’ve got you. Let’s make your next celebration unforgettable 💫
#Softplay #BounceHouse #KidsParty #PartyRentals
One year fluttered by 🦋🦋
Alara turned ONE and the celebration was as sweet as it gets! 🩷
This beautiful party was filled with smiles, happy little moments, and all the fun with our Custom Luxe Cotton Candy, perfectly paired with dreamy balloon decor that tied everything together. 🎀
We love bringing these milestone moments to life and making them extra special for families 💕
Ready to make your little one’s birthday dreams come true? Book with Party Baby today! 🥳
#Softplay #Bouncehuse #KidsParty #Partyrentals #PartyBabySeattle
Bear’s 4th Birthday was an adventure from start to finish! 🎉💙
The Cloud 9 Adventure Course brought all the energy, all the laughs, and all the non-stop fun! ☁️💫
If your little one loves to climb, bounce, and explore, we’ve got the perfect setup waiting. Let’s make your next party unforgettable! 🥳✨
#SoftPlay #BounceHouse #KidsParty #PartyRentals #SeattleKids
Obsidian’s 1st Birthday was pure style + pure fun! 🖤✨
Our Tuxedo Soft Play Area brought all the chic vibes to the party— and the little ones had an absolute blast! 🎉🤍
Ready to elevate your next party? We’ve got you! 🎈
#Softplay #Bouncehouse #KidsParty #PartyRentals #PartyBabySeattle
Here is more proof that @salesforce is officially one of the coolest companies on the planet. ☁️✨
We’ve been holding onto this one for a bit, but for an event this special, it was worth the wait. Last summer, we were honored to be part of Salesforce Adventure Club, a global celebration where workplaces transform into play spaces. The Seattle office truly understood the assignment. 🌍
This wasn’t just a Bring Your Kid to Work Day event. It was a masterclass in smiles and pure fun. 😊
From the non-stop wonder of our Bubble House and Cloud 9 Adventure Course to the energy of the Super Luxe Ball Pit + Slide, seeing the team swap their laptops for ball pits and family time was everything. It is exactly why we do what we do.
We love partnering with brands that value experience and family as much as we do. It was a privilege to help create these moments for the @salesforce team.🩵
Salesforce Seattle, you set the bar last year. We’re already counting down the days until we’re back on-site this summer to do it all over again. 🎉
#Salesforce #PartyBabySeattle #BounceHouse #BubbleHouse
Elliana turned ONE and WOW… It was beautiful! And of course, Pink! 💗🎀
This birthday bash was filled with nonstop smiles, tiny giggles, and BIG joy thanks to our Super Luxe Ball Pit & Slide.
From first steps to first birthdays, we love creating memories that feel just as sweet as they look. 💫
#Softplay #Bouncehouse #BallPit #KidsParty #Partyrentals
Lala’s sweet ONE was a dreamy celebration with our Luxe Cotton Candy setup—soft, colorful, and full of happy little giggles ! 💕🍬
From tiny steps to big smiles, this party was pure joy from start to finish ✨
Nothing makes us happier than helping families celebrate these once-in-a-lifetime moments. Ready to plan your next party? We’ve got you covered 💫
#Softplay #Bouncehuse #KidsParty #Partyrentals
Opening Day energy is here! 🙌 💙
Throwing it back to last year’s Opening Week Warm Up with the Mariners. ⚾✨
Our Double Bubble brought the fun to T-Mobile Park, with ballpark views, balloons, and plenty of excited Mariners fans. 💙
Wishing the Mariners an incredible Opening Day and an unforgettable season ahead. 🎉
Let’s go, M’s! 🙌⚾🔱💙
#Bubblehouse #MarinersOpeningWeek #SeattleEvents #SeattleMariners #SeattleEvents
