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!
Chloe’s 1st birthday 🌸 was too cute!
The sweetest playground with our Super Luxe Package. A Peach Pixie Soft Play Area + Mini Bounce House- the perfect combo for little party people and endless giggles. 💕
From crawling and climbing to happy little hops, every moment was pure birthday joy! 🎉
Planning your little one’s big day? 💫 Let Party Baby create the perfect play space for memories that last a lifetime. 💕
#Softplay #Bouncehouse #KidsParty #PartyRentals
Madelyn’s Berry 1st Birthday was a sweet celebration!🍓✨
A Custom Sunshine Soft Play (Berry theme edition!) made her party extra special — filled with laughter, play, and the cutest little memories 💕
Got a milestone coming up? Let Party Baby create a one-of-a-kind setup that’s as unique as your little one 🥳🌈
#Softplay #Bouncehouse #KidsParty #Partyrentals
Friday Jan 9th
Teddy turned ONE in the brightest way possible! ☀️💛
A Custom Sunshine Soft Play Area brought all the happy vibes and gave the little guests the perfect place to crawl, climb, and play all day long. 🌈✨
Ready to light up your little one’s big day? Party Baby’s got the setups that make memories shine 🎉
#Softplay #Bouncehuse #KidsParty #Partyrentals #PartyBabySeattle
Truth’s 1st birthday! Bumper Car and Bubble House fun! 🫧🚗✨
From zooming around in toddler bumper cars to giggles inside the mini bubble house, this ‘celebration had it all.
🥳 Ready to turn your little one’s party into the talk of the town? Let Party Baby bring the magic. 💫
#Softplay #Bouncehouse #KidsParty #Partyrentals
Diya turned ONE in the dreamiest way 🎀✨
Our Cotton Candy Soft Play Area brought all the fun, color, and giggles to her big celebration — the perfect setup for her special day 💕🥳
Planning your little one’s party? Let Party Baby bring the magic straight to you 🌈💫
#Softplay #Bouncehouse #KidsParty #Partyrentals
🎉 Aaron’s big ONE was packed with FUN✨
Our White Palace Bounce House made the perfect backdrop for this celebration filled with smiles, bouncing, and fun. 💙🤍
If you’re dreaming up the perfect celebration, we’ve got you covered. From first birthdays to just-because parties, Party Baby brings the fun, style, and unforgettable memories right to you. 🥳
📅 Book your next party with us and let’s make magic happen!
#BounceHouse #KidsParty #PartyRentals #PartyBabySeattle
Huge thanks to Kellia for sharing her experience! ⭐️⭐️⭐️⭐️⭐️
We’re so glad the Seattle sports theme made her son’s first birthday one to remember. Hearing that the kids had a blast and that the whole process felt smooth from booking to setup is exactly what we love to hear. Our team had a great time bringing this one together.
Planning your own celebration? We’d love to help make it just as special. 🎉
#PartyBabySeattle #SeattleKidsParties #SoftPlaySeattle #SeattleEvents
☀️ We’re already booking Summer 2026 parties! Reserve your spot now to lock in your date. 🌸
Summer magic + Bounce House fun = the perfect Play Date combo. 🏰💫
We brought our popular White Palace Bounce House to Mercer Island for a sunny celebration, creating a stunning centerpiece for a day full of play.
Make your next celebration unforgettable. Book your party today! 🎉
#SoftPlay #BounceHouse #KidsParty #PartyRentals
10 years of love, laughter, and memories celebrated in style! 💍🎉
Our Pearl Bounce House helped make this Mercer Island anniversary one to remember. 💫
From birthdays to anniversaries, we have the perfect setup to bring the fun to any celebration. 🥳
📲 Let’s party! Book with Party Baby today.
#BounceHouse #PartyRentals #AnniversaryParty
Enzo turned ONE in style! 🎉✨
Our Custom Tuxedo Soft Play made the perfect backdrop for his big celebration, keeping things safe, fun, and perfectly stylish for the little party crew. 🖤🤍
Planning your little one’s next milestone? We’d love to bring the party magic to you. 🥳💫 Book your dream setup with Party Baby today!
#SoftPlay #BounceHouse #KidsParty #PartyRentals
