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 Garnet Valley, PA

"Keystone is the best contractor we have ever dealt with. From initial contact to project finish and cleanup, they were responsive and professional.”

- John

" From the early planning stages to the ending finalizing stages, they never disappointed me in any way.”

- Chuck

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 Garnet Valley 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.

Keystone is all class from A-Z! Their team from Joe in sales and Sarah in customer service were as professional as they come! The best part of the whole experience was the care that the main construction team put into the build. Project Manager Matt has his stuff completely dialed in! It would be unfair to compare his team with anyone. They are on a different level! Jonathan and Linwood took amazing pride in their craftsmanship and are just really solid humans. We can’t say enough good things about the team! Oh… and we love the deck. Thanks so much!

- James

We had a fantastic experience from start to finish with Keystone Custom Decks. They took the stress out of planning and coordinating the build, which was much appreciated! The crew was awesome to work with. We absolutely couldn’t be happier with the end product and we’d highly recommend Keystone Custom Decks for your next project!

- Jeff

When you choose Keystone Custom Decks, you choose excellence. We chose Keystone to complete our dream outdoor living space after visiting their beautiful showroom and learning about their company values and work ethic. Working with Joe and then the design team was seamless. It was thrilling to see our ideas in a 3D rendering and walk-through. After that, we were sold! The best part of the project was seeing the vision come to life. For us, we had the pleasure to work with the best crew at Keystone. Our foreman, John, and his team Aaron and Mike were extraordinary and skilled. They were so professional and didn’t mind us lurking, asking questions and taking pictures of their exceptional craftsmanship. The crew arrived on time each morning and worked diligently all day. John was in constant contact with us if any changes were needed. We thoroughly enjoyed having this crew here each day and getting to know them. They became like family. I can’t forget about our mason team, Nate and Ray. They worked with us to make a few changes to grout color and patio stone without hesitation. Their masonry work is beautiful and adds such detail to our finished product. We can’t say enough about everyone that we have encountered at Keystone Custom Decks. Our finished outdoor oasis far exceeds our expectations. We have recommended Keystone to neighbors and friends and will definitely hire them again for any additional projects.

- Megan

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
Garnet Valley, 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 Garnet Valley 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 Garnet Valley, PA, and the surrounding counties and locations. 

If you live in Garnet Valley, you're probably;y familiar with the attractions the area has to offer! These include: 

  • Family Fun Drive-In Theaters
  • Lucky Penny Alpacas 
  • Bette's Family Fun Center
  • Oasis Family Fun Center
  • Game on State
  • Xscape The Room 
  • Booths Corner Farmers Market
  • Ship Bottom Brewery at Linvilla Orchards
  • Linvilla Orchards 
  • Tyler Arboretum 
  • Grace Winery 
  • And so much more!

Garnet Valley is also close to Philadelphia, which gives easy access to the many museums, historical sites, and other attractions the city offers. After exploring the historical Brandywine Battlefield Park, spending time outdoors at Clayton Park or the Clayton Park Golf Course, or getting physical exercise at the Maplezone Sports Institue or Maplezone Sports Village, you can enjoy your dream outdoor space and relax when you arrive home.

Garnet Valley got its name from the garnet mines that used to dot the region. These mines were established by the New York company Herman Bahr & Co. in 1879. The mines were closed in 1912. Garnet Valley was given its name by the United States Postal Service as a way to distinguish between those who lived in the Garnet Valley School District from those in Upper Chichester County. It remains an incorporated community and is home to 28,553 people. Notable people from the area include Rock musician Bill Haley. 

We build decks in the Garnet Valley, zip codes 19060 and 19061, and the surrounding zip codes.  We also follow all codes as established by Concord Township and Bethel Township.

Ready to get started?