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!
Fantastic experience, incredible product, the kids LOVED it!! They were super easy to work with, and set up and tear down went seamlessly. This takes care of entertainment for the kids and you can focus on the 1000 other things you have to do. Highly recommend!
We had a great experience with Party Baby Seattle. Very professional, clean, and organized! I would recommend this service to anyone.
I did a lot of research before using Party Baby and I was not disappointed. They were by far the most professional, organized and detail focused. From the customer intake process to online shopping experience and efficiency to day of coordination I could not be happier. I will definitely use again.
I would recommend Party Baby Seattle to anyone and everyone that has kids and would listen. We used them for my son’s first birthday and I was a mess with the planning sadly. They went above and beyond to make sure it was a great experience from changing the set up and colors when I finally picked a theme after purchasing another set to changing times when I accidentally set the party time to a half hour earlier (ugh, I am so so sorry). And more…They adapted to each of my blunders and were so wonderful about it all realizing I was just a stressed out mom of a baby turning one.
Everyone loved the play set up and our parent friends were so impressed. They didn’t even know about Party Baby but after they were in love. I hope more of them give this wonderful business some love because I have absolutely no regrets and it was the most wonderful experience. 10/10 would recommend. Thank you for making my son’s first birthday a huge success!
Everyone loved the play set up and our parent friends were so impressed. They didn’t even know about Party Baby but after they were in love. I hope more of them give this wonderful business some love because I have absolutely no regrets and it was the most wonderful experience. 10/10 would recommend. Thank you for making my son’s first birthday a huge success!
I had a wonderful experience with Party Baby Seattle! We rented a ball pit for my son's 2nd birthday and it was a HIT. Such a great activity to keep them outside and safe. I will definitely be renting from them again! They were also very communicative in the planning process.
I recently had my baby shower with Party Baby Seattle, and I couldn't have been happier with the setup! They provided an incredible ball pit and soft play area for the toddlers, which was a huge hit. The equipment was clean, safe, and perfectly suited for little ones. The team was professional, efficient, and very accommodating to our needs. The setup was done seamlessly, and the kids had an absolute blast while the adults enjoyed the celebration. It made the event extra special and stress-free. Highly recommend Party Baby Seattle for any event involving young children!
My one year old and his friends had the best time. Bouncy house was adorable and clean. They did a wonderful job with blueberry theme. I would recommend them to everyone.
We used Party Baby for our daughter’s 1st birthday and they were incredible! All our guests were so impressed with the beautiful and fun set-up. They customized the soft animal toys to fit our woodland theme perfectly. Party Baby was wonderful to work with - highly recommend!
Party Baby Seattle was a perfect fit for a corporate event I coordinated this summer! They were fast to respond, easy to work with the kids had a fantastic time!! I highly recommend them to other planners and party throwers!!
Party Baby Seattle was amazing to work with! They really brought my baby girl’s 1st party to life and really matched the theme. Everything was super cute and the babies had so much fun! Would definitely recommend for all kids birthday parties!
Loved Party Baby Seattle! The owner and her team were so professional, timely and made my daughter’s first birthday party truly special! I would define the book with Party Baby Seattle again!
We were absolutely thrilled with our Party Baby Seattle play space! It was the perfect centerpiece for our event, eliminating the need for extensive decor or other little details that can be stressful on the day of the party. The play space truly stole the show with its incredible wow-factor. And the best part? We could relax while everything was expertly assembled and later taken down. It was an absolute dream!
The kids, aged 1-4, had an amazing time exploring and interacting with the space in so many different ways. Plus, we booked early enough to request a custom color for the ball pit balls, which the company happily accommodated. Talk about exceptional customer service! We can't recommend Party Baby Seattle enough for your next event!
The kids, aged 1-4, had an amazing time exploring and interacting with the space in so many different ways. Plus, we booked early enough to request a custom color for the ball pit balls, which the company happily accommodated. Talk about exceptional customer service! We can't recommend Party Baby Seattle enough for your next event!
We were absolutely thrilled with our Party Baby Seattle play space! It was the perfect centerpiece for our event, eliminating the need for extensive decor or other little details that can be stressful on the day of the party. The play space truly stole the show with its incredible wow-factor. And the best part? We could relax while everything was expertly assembled and later taken down. It was an absolute dream!
The kids, aged 1-4, had an amazing time exploring and interacting with the space in so many different ways. Plus, we booked early enough to request a custom color for the ball pit balls, which the company happily accommodated. Talk about exceptional customer service! We can't recommend Party Baby Seattle enough for your next event!
The kids, aged 1-4, had an amazing time exploring and interacting with the space in so many different ways. Plus, we booked early enough to request a custom color for the ball pit balls, which the company happily accommodated. Talk about exceptional customer service! We can't recommend Party Baby Seattle enough for your next event!
Party Baby Seattle was AMAZING! Jeannie was professional, helpful and kind!! All of the babies (and their parents) at our daughter’s birthday party raved about the soft play area! It was perfect! Couldn’t recommend enough!
Party Baby Seattle set up "Wild One/Safari" for our son's 1st birthday party and it was a total hit! Everyone at the party was so impressed with the setup and the kids played in it more than anything else. Highly recommend!
We had a wonderful experience. Perfect for our little girl’s celebration. Felt safe for the age of the kids and it was super easy to coordinate logistics. So nice to not have to do set up and take down as well!
Amazing experience! Everything from booking to the day of the event was perfect and easy. The kids had a blast on the soft play area and it kept them occupied for the entire party. The staff set up the play area in such an adorable and inviting way! Truly, this was the perfect addition to our party. Everyone who I interacted and worked with was professional and friendly. I highly recommend!
We rented “The Tuxedo” soft play setup from Party Baby Seattle for my son's first birthday, and it was absolutely amazing! The equipment was clean, safe, and perfect for little ones. The team was professional, punctual, and set everything up seamlessly. The kids had a blast, and it made the party so much more enjoyable for everyone. Highly recommend Party Baby Seattle for any event involving young children. Thank you for helping make Xander's first birthday unforgettable!
This was such a great hit at my daughter’s first birthday party! My husband and I were glad we added this to the party fun. The Party Baby team made sure it went a long with our theme and made set up/clean up a breeze! Our guests, adults and little ones, were impressed with the play space. Highly recommend!
We had such a great experience with Party Baby. It was super easy to book, everything went exactly as expected, and the kiddos had a BLAST. I will definitely use Party Baby again, and I can't recommend them enough if you're planning to have a toddler party.
Renting a play space from Party Baby Seattle for our one year old's birthday was the absolute BEST decision! All of the littles at the party enjoyed the time in there from beginning of party until end. The equipment and toys were beautiful and clean. Set up and tear down was efficient and done by the company. It was so easy to book and communication with the company was stellar. Will definitely book with Party Baby Seattle again!
We love Party Baby Seattle! Their team is friendly, knowledgeable and passionate about helping make your party perfect! From planning to set up & clean up, working with them was the easiest part of the party. We used them for our daughter’s 1st birthday & they made sure the soft play yard matched our color scheme perfectly! It was a super fun & beautiful addition to our special event 🌸 We can’t wait to plan another party with Party Baby Seattle!
This was such a fun experience for my son’s first birthday! All the kids loved it from 0-5 years old. They bring everything you need and even a basket to put shoes in. Highly recommend - and make sure to add the slide!
All of the babies loved this soft play kit we rented for my child’s first birthday! 10/10 recommend! Great customer service, all of the toys were high quality and would definitely rent from them again!
I can’t begin to tell you how amazing this experience was from start to finish. The Party Baby crew came to the location on time, set up a beautiful play set in colors that matched the party perfectly, and tore it down quickly and easily. My son and his friends LOVED the set as well. Most of the kids were 12 months and under so I thought they might be too young to play in it, but I was wrong!! They chilled out in the ball pit, slid down the plush slide, and had a blast with the plush toys. 10/10 will order it again for a mom’s night in or a next birthday party!! Thank you!
If I could give 10 starts I would. The day went perfect. They made sure the colors matched my theme and the set up was seamless and they were so kind. I will 100% use them next year for my babies birthday! The ball pit is a MUST my girl LOVED it!
Also I want to mention how punctual and professional they are as well. Also there was a younger gal who was helping possibly new and she was the sweetest, complimented everything we had been decorating so she had the honor of the first cake pop!
Lastly, we unfortunately took their basket home by mistake & when I reached out she was SOOOOOO understanding and let me know I could bring it whenever or she can pick it up. I wouldn’t recommend accidentally taking anything obviously however to have a business be so kind and understanding was very nice.
Thank you allll so much for making our day!
See you next year!
Also I want to mention how punctual and professional they are as well. Also there was a younger gal who was helping possibly new and she was the sweetest, complimented everything we had been decorating so she had the honor of the first cake pop!
Lastly, we unfortunately took their basket home by mistake & when I reached out she was SOOOOOO understanding and let me know I could bring it whenever or she can pick it up. I wouldn’t recommend accidentally taking anything obviously however to have a business be so kind and understanding was very nice.
Thank you allll so much for making our day!
See you next year!
Amazing outfit, amazing service and the best bouncy house for my toddler's 3y birthday! We couldn't have been more satisfied! The staff came well ahead of schedule, worked with us to determine the appropriate setup location in our backyard, and installed the set up well in time for the party. The pearl bouncy house was beautiful, clean, safe and lots of fun for the toddlers and older kids to play in. The crew came back for tear down after the party and completed the work, all while wearing smiles on their faces and being extremely friendly. LOVE Party Baby Seattle!! I wouldn't hesitate to use them again and would highly recommend them to friends. Thank you Party Baby Seattle and Jeannie for making our toddler's 3y birthday so much fun!!
Jeannie went above and beyond to make our girl's first birthday so much fun with the Berry-themed soft play setup that all the kids enjoyed - so much so that my niece cried when it was time to go . I was so impressed by the berry touches, because there was no berry themed package to choose from, but Jeannie listened to the color scheme I was looking for and purchased the most adorable strawberry plush toys to go along with the theme. Cannot recommend Party Baby enough. Very happy with how the party went. Thank you Jeannie!
I had a great experience renting a bounce house through Party Baby Seattle for my daughter's 2nd birthday party. I wanted to rent a bounce house, but ideally one that was aesthetically pleasing. After a lot of Googling, I found Party Baby Seattle.
Jeannie was super responsive and easy to work with! She walked me through all of the options for soft-play and bounce houses based on the number of kids I was expecting and their ages. I decided on the white "Duke" large bounce house for kids with attached ball pit. We also did coordinating balls to match the color scheme of my daughter's bee-themed party (definitely sparked joy for my inner-perfectionist!) The bounce house was such a hit! Jeannie's team took care of set-up and tear down - no complaints. Overall, highly recommend if you're looking for a bounce house or other rentals for a kids party!
Jeannie was super responsive and easy to work with! She walked me through all of the options for soft-play and bounce houses based on the number of kids I was expecting and their ages. I decided on the white "Duke" large bounce house for kids with attached ball pit. We also did coordinating balls to match the color scheme of my daughter's bee-themed party (definitely sparked joy for my inner-perfectionist!) The bounce house was such a hit! Jeannie's team took care of set-up and tear down - no complaints. Overall, highly recommend if you're looking for a bounce house or other rentals for a kids party!
Ready to Plan Your Mercer Island Event?
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GET INSPIRED!
Emma’s Sweet One was just as dreamy as it sounds! 🍭🎉
Our Cotton Candy Soft Play Area brought all the pastel magic and sugar-sweet vibes for her special day 💕✨
If you’re planning a first birthday that’s as adorable as your babe—@partybabyseattle has you covered 🥳💫
Let’s party the sweet way!
#Softplay #Bouncehouse #KidsParty #PartyRentals #SeattleEvents
❄️ Arden’s 2nd Birthday was a Frozen dream come true, complete with our Cotton Candy Soft Play Area bringing all the magic to her special day 💙⛄
From soft play to frozen vibes, Party Baby brings the fun wherever you are. Let’s make your little one’s next party unforgettable! 🎉
📍Seattle
🎈Book your party magic now @partybabyseattle
#SoftPlay #KidsParty #PartyRentals #PartyBabySeattle #SeattleEvents
🦈✨ “Doo doo doo doo “ Kashvi’s 2nd Birthday Party was a swimming success! This Baby Shark celebration was pure party perfection, thanks to The Perfect Little Party Package. From bouncing to belly laughs, every detail was on point! 🎈🎉
Hosting an unforgettable party has never been easier (or more fun!)—we’ve got the setups, vibes, and memories covered. 😉 Ready to make a splash at your next event? Let’s create magic together! ✨🎂
💌 Slide into our DMs to book your fin-tastic celebration today!
#SoftPlay #BounceHouse #KidsParty #PartyRentals #PartyInStyle
Happy 4th of July! ✨
Celebrating freedom, unity, and everything that makes this day special. Wishing you all a safe and joyful Independence Day! 🎆🎉
#FourthOfJuly #IndependenceDay #July4th
It was meant to bee at the sweetest celebration for Declan’s 1st Bee-day! 🐝💛✨
Our soft play area kept the littles buzzing with excitement while the grownups soaked in the cuteness overload.🐝🎉
We’re so lucky to help bring these precious moments to life. Ready to plan your own un-bee-lievable party? Let’s make it happen! 🐝💫
#Softplay #Bouncehouse #KidsParty #PartyRentals #PartyBabySeattle
🚜🐄 Makori’s Farm-themed 2nd Birthday was a moo-velous celebration! With our Custom Luxe Play Area, the little ones had a blast hopping, climbing, and playing through the fun-filled day. 🐑💫
Looking to create a celebration as amazing as this? DM us to book your next unforgettable party with Party Baby! 🥳🎉
#SoftPlay #BounceHouse #KidsParty #PartyRentals #SeattleEvents #BirthdayJoy
Crew turned ONE and things got wild 🐾🎉 From little roars to big smiles, this Wild One celebration was full of adventure, cuteness, and the Luxe Sophie & Fawn soft play magic! 💫🦁
Ready to plan your own party safari? Let’s make it happen — the Party Baby way! 🥳✨
🦒 Book now @partybabyseattle
#SoftPlay #BounceHouse #KidsParty #PartyRentals #PartyBabySeattle
Bellamy turned ONE with a splash 💦🐚 and we took the party one-der the sea with the cutest setup featuring our BUBBLE HOUSE! 🌈🫧 The smiles, the giggles, the magical vibes—everything about this day was pure underwater joy! 🐠💕
Planning a first birthday, or any kiddo celebration? Let’s make it unforgettable ✨ Book your party with @partybabyseattle — we bring the fun, you make the memories!
#SoftPlay #BounceHouse #KidsParty #PartyRentals #SeattlePartyRental
Royal fun for a very special birthday boy! 👑🎉 Gianni’s 2nd Birthday was nothing short of majestic with The Prince Mini Bounce stealing the spotlight! ✨💙 From epic jumps to endless giggles, this celebration in Auburn was fit for a little king!
Planning your own unforgettable party? Let Party Baby bring the magic to YOU! 🎈 Book now and make memories that last a lifetime.
#SoftPlay #KidsParty #PartyRentals #SeattleEvents #PartyBabySeattle
🌲🦊 Anton’s 1st birthday was a wild adventure! 🦉🍃
With the Sophie & Fawn Soft Play Area, little explorers had the best time hopping, climbing, and playing in a woodland wonderland! 🍄✨.
Planning your little one’s next big day? Let’s make it unforgettable with Party Baby! 🎉🐾
#SoftPlay #BounceHouse #KidsParty #PartyRentals #SeattleEvents #PartyBabySeattle
