your Dream outdoor living space

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Improve your lifestyle
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Host Great Parties
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Increase Your Home Value

Make your dream outdoor living space a reality with a custom deck and additional features!

Deck Builder in Kennett Square, PA

“We are incredibly pleased

with the outcome and excited to have this new outdoor living space to relax and spend time with the family.”

- Garret Pachtinger

 “We’re very excited

to use our new outdoor space.  With football season around the corner it will get a lot of use!”

- Erica Evans

“We LOVE our new deck

with an outdoor kitchen and fireplace!”

- Megan & Dave Johnson

“Dream come true.

We are over the moon happy with our new deck.”

- Angela R.

Become a Master Host in Kennett Square with a custom outdoor living space.
  • Group Of Happy Young Friends Having Dinner At Patio

    Host Great

    Make new and lasting memories with family and friends.

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

    Have a Place
    to Relax

    Let life’s worries behind as you enjoy the beauty of the outdoors.

  • 660460

    Be Proud
    of Your Space

     Become the envy of the neighborhood with your beautiful outdoor space.

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

At Keystone Custom Decks, we believe having your dream outdoor living space designed and built should be an enjoyable and painless process.

  • Do you love hosting people, but you don’t love your available space?

  • Do you enjoy spending time outdoors, but your existing outdoor space is unattractive or unusable?

  • Do you have a vision for your dream outdoor living space, but you feel overwhelmed by the construction process?

We know what it feels like to not love your outdoor living space. That is why we have been building dream decks in Kennett Square and nearby areas for over 30 years.

“We recently hired Keystone Custom Decks to replace our existing wood deck with a new composite deck and roof. 

Everything about their business is "Class A"; from their sales rep, Ron, to Bradley who runs their "world-class" showroom, to Matt, Jonathon, and Merv who were the most professional crew we have ever worked with.

They completed the entire project in less than two weeks, they cleaned up every day, and they showed up at 6:59 am when they said they would be there at 7:00 am. Their workmanship was impeccable. We truly miss not having them at our house. It's no wonder Keystone Custom Decks is extremely busy and growing.

-Alan R.

We make the process as easy as possible

  • 1

    Call Us

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

  • 2

    Design Proposal

    Receive your quote and complimentary 3D rendering.

  • 3


    Sign your proposal and watch your dreams become reality.

  • 4


    Love the space you have to host parties and live!

3D Render Final Build

“Keystone just finished our deck today!  They started in the timeframe they noted in our quote.  They sent a 3D rendering of the finished product and were so easy to communicate with  Would definitely recommend!”

- Krista Alfonse

What you can expect with Keystone Custom Decks:

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.

“From start to finish our experience was outstanding. Ron put our ideas to paper perfectly and Stephen and his crew executed the building seamlessly. The quality of work, communication and attention to detail were excellent and our dream porch was completed ahead of schedule.

-Pat U

“Excellent craftsmanship, all the way down to the tiniest details! Josh and the crew were very friendly and courteous. I would highly recommend Keystone Custom Decks to anyone. Looking forward to working with them again in the future!

- Doug M.

"The overall process from discovery, design, quote and build was very professional and courteous! The sales representative (Mahlon) was very attentive to our requests and worked very closely with us to ensure the deck met our needs and budget while promptly answering every question we had.

- David R.

"Keystone installed new railings and composite decking at our home recently - the crew did a great job, and the process was incredibly smooth. Mahlon and his team were excellent and I’d highly recommend them.

- Matt F.

"Each morning Josh informed us what had occurred the day before and what would happen that day. Thank you, Josh, for the recommendation of wider steps. Good call. John and Paul did a great job building our deck and outdoor shower, from new concrete footers on up. Great craftsmanship. John even returned on a Saturday to finish clean up and power washing.

- Susan C.

Kennett Square Deck Builder

Do you own a home in Kennett Square or in the nearby area?  If so, you want a beautiful outdoor living space for hosting, relaxing, and spending quality family time.  The problem is your current outdoor space might be unattractive or unused.  Keystone Custom Decks builds beautiful custom decks and outdoor living spaces 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.

Custom Decks in
Kennett Square, PA

To make your dream backyard a reality, we also know that you may want more than just a deck.  That is why we are more than just a local deck builder; we also offer multiple custom features to go along with your custom deck.

We build porches, patios, pergolas, outdoor kitchens, fire pits and fireplaces, masonry features, and water features to accompany your custom deck.

All of these features will allow you to create a personalized space where you will make new memories, share family meals, relax in your backyard, and become a master host with a beautiful outdoor space.

Information courtesy of Keystone Custom Decks, 158 Toddy Dr, East Earl, PA 17519

Are you ready to start designing your dream outdoor space?

Read our FREE e-book to learn the questions you need to ask when you begin designing your dream outdoor living space!