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!
Nico’s 2nd Birthday was all about big smiles, happy little feet, and nonstop bouncing with The White Palace.
Simple, classic, and so much fun—just the way a perfect toddler party should be 🥳
Planning your next celebration? Let Party Baby handle the fun so you can enjoy every moment.
#Softplay #Bouncehuse #KidsParty #Partyrentals
Kai was Born 2 Ball! ⚽🏀🏈
Kai’s 2nd Birthday was full of bounce, laughs, and picture-perfect moments with The White Palace Bounce House and awesome balloon decor.🎈
The energy was high, the smiles were nonstop, and the celebration was one for the books ✨
Ready to make your little one’s party just as magical? Let Party Baby bring the fun to your next celebration!
#Softplay #Bouncehuse #KidsParty #Partyrentals
Charlie’s 2nd Birthday was filled with friends, family, and lots of FUN 🥳
From belly laughs, to bouncing babes, it was nonstop fun with the Luxe Moon & Back. 🤍
These are the moments we love creating—happy kids, relaxed parents, and a birthday party to remember. 😊
#Softplay #Bouncehouse #KidsParty #Partyrentals
Ezaan’s Dino-mite 1st Birthday was a roaring success! 🦖🎉
Our Party Baby Soft Play Area + custom balloon decor made the day full of giggles, fun, and unforgettable memories! 🥳✨
Ready to throw a party your little one will never forget? Let’s make it happen! 💖
#Softplay #Bouncehuse #KidsParty #Partyrentals
✨❄️ Amelia’s 4th Birthday was straight out of Arendelle! ❄️✨
A Custom Cotton Candy Soft Play Area transformed her party into a mini Frozen wonderland where little ones laughed, played, and let their imaginations sparkle.✨
Planning your little one’s big day? Let Party Baby create the perfect play space for memories that last a lifetime. 💕
#Softplay #KidsParty #PartyRentals #FrozenParty
Sweet, bubbly, and full of fun — just like a cup of boba! 🧋🫧
Julian’s 1st Birthday was a total hit with our Sophie & Fawn Soft Play Area, bringing all the cozy, colorful vibes to this Bubble Tea–themed celebration. 🤎
Planning your little one’s special day? Let Party Baby bring the fun (and the aww factor) to your next celebration! 💕
#Softplay #Bouncehouse #KidsParty #PartyRentals #SeattleEvents PartybabySeattle
Joan’s 1st Birthday! 🌞🥳🎈
It was a beautiful Saturday morning at Joanie’s Cafe 🍵🌞
The littles had the best time crawling, climbing, and playing all day long in our Sunshine Soft Play Area 🌼💛
Whether it’s a 1st birthday, playdate, or just because… we’ve got you covered!
Ready to make your next party unforgettable? Let’s party, baby! 🎉
#SoftPlay #BounceHouse #KidsParty #PartyRentals
“Birthday Shark do-do, do, do do “ 🦈🥳
Oliver’s Baby Shark themed 2nd birthday was so much fun, and the White Palace Bounce House was a hit!
Ready to make your little one’s day unforgettable? Book your dream setup with Party Baby — we’ll bring the fun straight to you! 🥳💖
#PartyBabySeattle #SeattleKidsParties #BirthdayGoals
Super Bowl Sunday energy, kid-style. 💙💚🏈
As the biggest football day of the year kicks off, we’re throwing it back to one of our favorite events of the year. For the third year in a row, we had the honor of bringing the Seahawks Kids Holiday Party to life with big smiles, nonstop bouncing, and festive fun all around.
We transformed @meydenbauercenter into a Polar Express-themed experience, and the little 12s had an absolute blast. 🎉
Huge thank you to the @seahawks for having us back again. Events like this are why we love what we do.
Cheering them on today and always. Go Hawks! 💙💚
#SoftPlay #KidsEvents #PartyRentals #SeattleEvents #SuperBowl
A hole-in-ONE for Arthur’s first birthday ⛳️🎉
This Masters-themed celebration was pure perfection. From Augusta greens to tiny toes, our custom soft play area was designed for stylish fun and happy little guests 💛💚
✨ Creating elevated play spaces for unforgettable celebrations. Now booking a limited number of custom events — link in bio.
#SeattleSoftPlay #LuxuryKidsParties
