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.
Professionally styled setups for birthdays, corporate events, and more.
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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Adding joy to every occasion!
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.
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Five stars from Clarissa, and our hearts are full! ⭐️⭐️⭐️⭐️⭐️
We’re so glad your son’s first birthday was everything you hoped for. From choosing the theme to handling the setup and cleanup, we love making the day feel effortless so you can just enjoy the moment. Can’t wait to celebrate with you again. 🎉
Planning your next event? Let’s bring it to life.
#PartyBabySeattle #SeattleEvents #SoftPlaySeattle
Vaelyn’s Berry 1st Birthday was as sweet as they come! 🍓💕 Our custom red + pink soft play setup brought the perfect pop of fun and the little ones couldn’t get enough!
Planning your own berry special day? We’ve got you covered. 🍓✨ Book your dream party with Party Baby!
#Softplay #Bouncehouse #KidsParty #Partyrentals #PartyBabySeattle
Vaelyn’s Berry 1st Birthday was as sweet as they come! 🍓💕 Our custom red + pink soft play setup brought the perfect pop of fun and the little ones couldn’t get enough!
Planning your own berry special day? We’ve got you covered. 🍓✨ Book your dream party with Party Baby!
#Softplay #Bouncehouse #KidsParty #Partyrentals #PartyBabySeattle
Zena’s 1st Trip Around The Sun was out of this world cute!
The little ones enjoyed the Luxe Cotton Candy the perfect mix of bounce and play, with an Itty Bitty Bounce House and the Cotton Candy Soft Play. 💕✨
Got a little one’s birthday around the corner? Let Party Baby create the setup of your dreams and make those memories unforgettable 🥳🌈
#Softplay #Bouncehouse #KidsParty #Partyrentals
Be’onna’s Wild & Onederful birthday was a total dream! 🐾🌿✨
The White Palace was the perfect centerpiece for this sweet celebration full of bounce, giggles, and first birthday magic. From wild vibes to wonderful memories, this party had it all 💕
Planning a party for your little cub? Let Party Baby help you go all out for their big ONE!
#Softplay #BounceHouse #KidsParty #PartyRentals #PartyBabySeattle
Carter’s 1st birthday was one sweet celebration! 🍪💙 With a Cookie Monster + Milk & Cookies theme and our Luxe Party Baby setup (Soft Play + Itty Bitty Bounce House), this Bellevue party was full of giggles, fun and cookie-monster cuteness 🎉
Planning your little one’s big milestone? Let @partybabyseattle help you create memories that are just as sweet 😍✨
#SoftPlay #BounceHouse #KidsParty #PartyRentals #PartyBabySeattle
Emma’s 1st birthday was a fairy tale come to life 🌸🧚♀️✨
Our Cotton Candy Soft Play setup paired with custom balloon décor transformed this party space into a whimsical garden party backdrop, perfectly matched with soft pastels and fairy touches 💕🎂
Planning a dreamy first birthday or looking to sprinkle a little magic on your next celebration? We’ve got the setup that makes it happen 💫
Book your party with Party Baby and let the magic begin! 🥳
#SoftPlay #KidsParty #PartyRentals #BounceHouse #PartyBabySeattle #BalloonDecor
DocuSign turned their Seattle office into a family-friendly celebration 🎉
We brought in our original Party Baby Soft Play setup, and the littlest VIPs and future CEOs had the best time crawling, climbing, and exploring 💼💙
Looking to make your next corporate event family-friendly? Party Baby can tailor setups to any theme and create an experience both kids and parents will love.
Our calendar fills quickly. Book your event now!
#SoftPlay #KidsParty #PartyRentals #PartyBabySeattle #DocuSign #SeattleEvents
✨ Bring Your Own Baby ✨
Overlake Golf & Country Club’s BYOB event was an afternoon to remember. We were thrilled to be part of such a fun and special celebration for their members, bringing our Luxe Moon & Back for little ones to enjoy while families connected and made memories together. It’s clear OGCC knows how to throw an unforgettable party, and we can’t wait for the next celebration. 🎉
#SoftPlay #BounceHouse #KidsParty #PartyRentals #SeattleEvents #BYOBaby
Rainbows, animals, and all the giggles 🌈🦁✨
Beatrix’s 3rd birthday was a fun and colorful celebration, and our Super Luxe setup brought the magic to life in Seattle 🥳💖
From soft play to unforgettable memories, this party had it all. Ready to bring the joy to your next event?
📲 Book with Party Baby and let’s make magic happen 💫
#SoftPlay #BounceHouse #KidsParty #PartyRentals #PartyBabySeattle
