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
Party Baby came through for me in short notice planning of my little girl's birthday party. I rented the mini castle bounce house and ball pit to set up at pur house and it was amazing! It was the perfect set up for our backyard and age group of kids (2-6). Everything from communication, transparency of pricing, ease of set up, experience using the product and takedown was seamless. Everything was super clean and looked new. Would absolutely recommend and use again. Thank you, Party Baby!
EVERYTHING WAS ALL PERFECT!!!!! THE KIDS LOVE IT AND THEY HAD AN AMAZING TIME WHEN I RENTED THEM FOR MY DAUGHTER'S FIRST BIRTHDAY. When you do the consult, they will walk you through. They have been very patience with both my husband and I. They are such wonderful teams. This was my first time with them too. I most definitely will do this again in November for my son's 5th birthday!! Go check them out yall.
Super easy communication and getting it scheduled. They came and set it all up and then took it all down at the end. All the kids and adults loved the castle bouncy house.
Awesome customer service! We great a wonderful experience
We rented the bubble house from Party Baby for our wedding reception, and it was absolutely perfect. We had a large rooftop space to fill and a lot of kids attending, so I wanted something that would help keep everyone entertained — and it ended up being a huge hit with both the kids and adults. The kids especially loved it and spent so much time playing in it throughout the reception.
I’m only posting one photo because I’m shy, but honestly we got so many amazing photos and videos with it. It added such a fun energy to the reception and looked great in the space.
Working with Jeannie and the team was also incredibly easy. One quick phone call was enough to get everything set up, and the staff onsite was friendly, professional, and very kind to our guests.
Highly recommend if you want something memorable and fun for a wedding or event — you won’t regret it!
I’m only posting one photo because I’m shy, but honestly we got so many amazing photos and videos with it. It added such a fun energy to the reception and looked great in the space.
Working with Jeannie and the team was also incredibly easy. One quick phone call was enough to get everything set up, and the staff onsite was friendly, professional, and very kind to our guests.
Highly recommend if you want something memorable and fun for a wedding or event — you won’t regret it!
Party baby was fantastic! Great set up, great communication and reasonable prices.
As a social event planner, I worked with Party Baby this past week for a client’s son’s birthday party. Jeannie was so easy to work with, adhered to our color palette requests, and set-up according to our timeline. The play-set was a huge hit with the kids and fit perfectly with our spring chicken theme. I highly recommend Party Baby and would use their service again in the future.
Fantastic experience and it was the highlight of the party!! The team was responsive and helpful. They showed up right on time and got everything set up. Everything they provided was perfect and I will absolutely be using them for parties in the future!
We chose the cotton candy package from Party baby Seattle . It perfectly matched our pastel color scheme, I appreciated the options to customize the colors , set up and take down was taken care off well and most importantly, the kids loved it !
Mercer Island Party Rental FAQs
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Yes, Mercer Island is part of our regular delivery area, including the North End, Mercerdale, First Hill, and the East Seattle neighborhoods, with delivery, setup, and takedown included with every rental.
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Yes, park events work beautifully. Inflatables need power, so park bookings run on a reliable generator, and the shelter or picnic-area reservation with the city is handled by you before the event. Luther Burbank Park is a local favorite for exactly this.
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White bounce houses, soft play for ages 1 to 5, and ball pits with ball colors matched to your theme lead most Mercer Island bookings, for birthday parties, first birthdays, and backyard celebrations.
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Trusted by the Seahawks, Mariners, Salesforce, and Google, we deliver kid friendly corporate events, daycare and school events, and employee family days at Mercer Island workplaces, schools, and venues. See corporate events for the full picture.
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Yes, indoor setups run year round in living rooms, garages, community rooms, and venues, which is how Mercer Island families keep winter birthdays going. We never set up outdoors in the rain, so an indoor backup is always the smart plan.
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Two to four weeks for summer weekends, and popular setups go first. Request a quote with your date and space and we’ll confirm availability, and gift cards are available if the party’s a gift.
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!
A first birthday, but make it iconic. ✨
Welcome to Tova & Co. 🩵
Where Tiffany blue meets tiny feet, and every detail was designed to feel just as special as the birthday girl.
A custom soft play experience, the Mini Bubble House, crisp white details, beautiful bows, and just the right touch of blue. Playful enough for the littlest guests and elegant enough to blend seamlessly into the celebration.
From beginning to end, Tova’s first birthday was pure elegance. Thoughtful, personal, and absolutely beautiful.
Because when play is part of the aesthetic, the whole celebration comes together. ✨
🩵Thank you to mama and host @merna_elaggar for having us!
Shout out to these amazing vendors
🩵@thetreasurecorner
🩵@ahasugarco
🩵@sip.of.treasure
🩵@woodmarkhotel
🩵@celebritycakestudio
#partybabyseattle #luxurykidsparty #partydesign #seattlemoms #TiffanyInspired #softplay #bubblehouse #seattlekidsparties #FirstBirthdayInspo
What if the best part of the party… was the bumper cars? 🏎️
Our Bumper Cars bring the kind of energy kids don’t forget - racing, laughing, and going back for “just one more ride.”
Indoors, outdoors, backyard or event space, we bring the setup to you. And with custom decals, we can make the cars fit right into your party theme. Because when the entertainment looks this good AND keeps them moving? That’s a win. 🙌
Ready to bring Bumper Cars to your next party? Let’s make it happen. 🎉
Book yours today - link in bio
Everyone sees the finished photos. Here`s how it actually happens. :)
Loading the vans, hauling everything through the stadium tunnels, and building a full custom soft play area on the field at T-Mobile Park for Mariners Family & Friends Day.
The part nobody sees is the part we`re proudest of.
Same energy whether it`s a ballpark or a backyard.
Love this team. 💙
#partybabyseattle #behindthescenes #tmobilepark #seattlemariners #eventsetup #corporateevents #seattleevents #softplay #eventplanner #bts #pnwevents
Our Luxe Little Storm Cloud setup is ready for spooky season!🎃
Designed with black and white styling and playful Halloween details, this bounce house, ball pit, and soft play combo is perfect for Halloween parties and October birthdays alike. Just bring the little guests. We`ll take care of the rest.
Tap the link in our bio to book October or visit partybabyseattle.com.
#partybabyseattle #softplay #halloweenparty
A setup inspired by your little one`s favorite fruit? Why not. 🍓
Our Custom Luxe Package pairs a soft play area customized to your theme with our White Itty Bitty Bounce House, bringing your vision to life.
Who knew strawberries could make such a good party theme? We might have a new favorite.
Tap the link in our bio or visit partybabyseattle.com.
This custom Beary 1st Birthday setup was one of our favorites!🧸
Designed with soft tones and playful details, our Custom Super Luxe Package creates the perfect space for little ones to celebrate.
Just bring the little guests. We`ll take care of the rest.
Tap the link in our bio to book this look or visit partybabyseattle.com.
#PartyBabySeattle #FirstBirthday #SeattleEvents #SoftPlay #BounceHouse #LuxuryKidsParty
College football is back! Want to host a Husky watch party and actually get to watch the game? 💜🏈
While the grown-ups cheer on the Dawgs, the little ones get a game-day setup of their own! From the ball pit to the custom Husky decals, it`s purple and gold down to the last detail.
And this isn`t a one-off. Soft play, bounce houses, ball pits and more, any of our packages can be customized for game day.
Kids play. Parents party.
Our fall calendar fills up fast. Secure your game day setup before kickoff. Tap the link in our bio to book! ✨
#GoDawgs #UWHuskies #HuskyFootball #CollegeFootball #WatchParty #SoftPlay #BallPit #KidsPartyIdeas #SeattleEvents
If your celebration feels like it`s missing that one little detail that brings everything together, we have just the thing. ✨
Introducing Kids Tables & Tablescapes, our newest collection designed to take your celebration to the next level
Choose from The Boho Blush, The Sage Garden, or The Blush & Bounce. Each setup includes carefully selected tableware, décor, and kids chiavari chairs, all delivered, styled, and set up for you before your event.
Perfect for birthdays, baby showers, holidays, and corporate family events throughout the greater Seattle area.
More palettes are on the way.
Tap the link in our bio to book or visit partybabyseattle.com.
There are days that remind us just how far we`ve come. ⚾
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Seattle Mariners Family & Friends Day at @tmobilepark.
The game ended, and our team had exactly 30 minutes to build a custom soft play setup on the field before the players walked out with their families, still in their jerseys.
Custom @seattlemariners ball pit, team color palette throughout, and stacking cubes with custom decals. Built for the littlest fans in the ballpark.
Thank you to the @seattlemariners for having us. Getting to be part of a day like this for the players and their families is something we won`t forget.
#partybabyseattle #tmobilepark #seattlemariners #corporateevents #seattleevents #eventdesign #softplay #pnwevents
A little spring chicken turned ONE. 🐣 🌼
Custom colors, farm-inspired details, a red barn play tent, plush chickens, and plenty of room to crawl, climb, and play.
One of our favorite first birthday themes yet! 🤍
Thank you to Katrina from @_bylittlebird for bringing us in to be part of this sweet celebration.
#SpringChicken #FirstBirthday #SoftPlay #KidsParties
