your family's dream swimming pool

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Improve your lifestyle
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Host Great Parties
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Increase Your Home Value

Take your outdoor entertainment & hosting to the next level with a truly custom pool!

Swimming Pool Contractor & Builder in Kennett Square, PA

"Great experience from start to finish. Our project turned out even better than we thought.”

- Dan

"John Earvin and his crew gave us a beautiful, custom deck that exceeded our expectations. John and his crew were professional, prompt and incredibly gifted at their craft. We truly have the custom deck that has the envy of the neighborhood. I highly recommend them to anyone who is looking for their own dream deck. I can't thank you enough for holding my hand through initial proposal to final inspection. They even sent my daughter a beautiful bouquet of flowers for her 6th birthday. We are so grateful to Keystone, John Earvin and his crew for making our dream deck become reality!!”

- Sean

Enjoy a fully custom swimming pool in your backyard

  • Infinity Edge

    Host Great

    Enjoy pool parties and backyard events with family and friends.

  • Home lifestyle woman relaxing enjoying luxury sofa patio furniture on outdoor patio

    Have a Place
    to Relax

    Leave life's worries behind you as you relax in the water.

  • Spillways

    Be Proud
    of Your Space

    Add value to your home and love your new swimming pool!

Download our catalog to see everything we offer with our custom pools!

At Keystone Custom Pools, we believe having your dream swimming pool designed and installed should be an enjoyable and stress-free process.

  • Are you ready to host amazing pool parties?

  • Do you want to spend more time outdoors with family and friends?

  • Are you looking for a turnkey swimming pool contractor who can make your deams come true?

We know what it feels like to not love your outdoor living space. That is why we install and build pools in Kennett Square to make your dream outdoor area a reality. 

“Our thanks to everyone at Keystone that made our dream come true. They are all experienced and like what they do.

The project was completed ahead of schedule, and the project was well planned and expertly constructed. We love our new space!”


We make a pool as easy as possible

  • 1

    Talk To Us

    We’ll learn more about your space and schedule an estimate.

  • 2

    Design Proposal

    Receive your quote and complimentary 3D rendering.

  • Swimming Pools construction 12


    Sign your proposal and watch your dreams become reality.

  • Group of happy friends relaxing in swimming pool - Young people having fun in exclusive summer tropical vacation - Friendship, holidays and youth lifestyle concept


    Love your swimming pool and host great parties!

before 3D rendering after project completed

“Their 3D rendering really helped us envision what the final project would look like, and it helped guide us in making adjustments and changes to improve the functionality of the living space.”

- Lawrence Han

What you can expect with Keystone Custom Pools:

Turn-key Projects

We take care of every part of the construction process.

Lifetime Workmanship Warranty

We stand behind our work for life.


We deliver on our timeframe and proposal promises.

Financing Available

We offer financing options through our partners.

We had Keystone enclose a deck off our kitchen. Outstanding is the only word to describe their work. They were finished in 5 days. I never saw a crew work so hard and professionally. The end product is beautiful. You won’t go wrong with Keystone Deck doing a project.

- Paul

We couldn’t be more delighted with our new deck, fence and pergola. Dan, our project manager, along with his team, Dave & Josh, worked diligently to complete our beautiful addition. Their care, professionalism, and kindness was appreciated by us as well as our neighbors, who marveled at the team’s work ethic. The slope of our property required great precision and agility in design. Their excellent craftsmanship is the showpiece of our home. I would highly recommend Keystone Custom Decks.

- Rebecca

If you’re searching for a builder for an outdoor living space and worried about finding a contractor that does quality work, you can stop your search. Keystone Custom Decks have been outstanding from design to build. Every step of the process was well planned out and we couldn’t be more satisfied. Big shoutout to Dave and his team who promptly responded to our ask’s and worked tirelessly to get the job done right. Call Keystone to make your outdoor dreams a reality!

- John

Swimming Pool Contractor FAQs

An average size for a home swimming pool is 16x35 or 560-600 square feet. Depth varies from pool to pool and depends primarily on the owner's preference. 

Yes, a swimming pool can easily be incorporated into a deck or patio. If you'd like help with envisioning this or brainstorming, our design team is happy to help! 

The time it takes to install a pool can vary depending the complexity of the project. However, most fiberglass pools take 3-4 weeks to install while concrete pools take 2-3 months to install. 

Anyone that ones a swimming pool and has young children should be careful to protect their children. You also need to know that there is a risk assumed with having a swimming pool. 

However, there are several things you can do to make a swimming pool more safe for children: 

1. Put a fence around your swimming pool

2. Add a safety cover if possible

3. Alarms that sound when a person or animal enters the pool.

4. Self-locking gates

5. Gradual slope from the shallow to deep end of the pool. 

Pools are fun no matter what shape they are in. And sometimes, people prefer specific shapes for certain reasons. 

However, rectangular pools are usually considered the most versatile and are the easiest to add pool accessories like water nets. 

Yes, we would be happy to help you design a swimming pool. 

Swimming Pool Installer in
Kennett Square, PA

As a homeowner, you want a backyard that allows you to spend quality time with friends and family.  The problem is your current backyard isn't being fully utilized, but it's the perfect place for a swimming pool.  Keystone Custom Pools designs, builds, and installs beautiful custom pools throughout Kennett Square so you can host great parties, make memories, and improve your lifestyle.

At Keystone Custom Decks, we know you want to create and live in your dream outdoor living space, and that is why we have been building custom decks with additional features for over 30 years.

We are a custom deck builder in Kennett Square, PA, and the surrounding counties and locations.  

Kennett Square is a beautiful town with lots to offer! Here's a sampling

  • Longwood Gardens 
  • Mushroom Cap 
  • Anson B. Nixon Park 
  • La Verona
  • Woodlands at Philips
  • Country Butcher Cafe 
  • Square Pear Fine Art Gallery 
  • Mrs. Robinson's Tea Shop 
  • Penny Lane Emporium 
  • Kennett Flash 
  • Kennett House Bed and Breakfast 
  • Willowdale Steeplechase 
  • Floga Bristo

After enjoying the culture of Historic Kennett Square, enjoying the outdoors at Kennett Park and the Anson B. Nixon Disc Golf Course, or exploring the Natural Lands Cheslen Preserve, you can come home and enjoy your custom backyard and outdoor space!

The area that is now Kennett Square was originally home to the Lenape Native American tribe. The town was named after Kennett, Cambridgeshire in England. It was incorporated in 1855. 

The Borough website states the following about the town: 

"Kennett Square is a charming borough in Chester County. It is known as the Mushroom Capital of the World because mushroom farming in the region produces over a million pounds of mushrooms a day. Our mission is to provide a desirable community through service progress, and preservation to our diverse population."

We service the entire Kennett Square and the surrounding area, including zip code 19348.  We also follow all codes as established by Kennett Square Borough.

Ready to get started?