Create

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
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Deck Builder in Penn Yan, NY

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

Patios
Porches
Decks
Pergolas

Additional Features

Outdoor Kitchens
Firepits and Fireplaces
Water Features
Masonry Features

 “The most professional

and understanding crew I've ever had the pleasure to be able to have work done for my family.”

- Guiseppe Troisi
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Become a Master Host in Penn Yan with a New Backyard Deck

  • Happy Friends Having Lunch

    Host Great
    Parties

    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.

  • Smiling man crossing his arms

    Be Proud
    of Your Space

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

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Visit the Showroom

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 custom decks for over 30 years.

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“From start to finish, Keyston was extremely comprehensive, communicative, prompt, and professional.  Our completed project is exactly what we've been dreaming of for nearly a year.

Mahlon really listened to our wants and needs.  The crew did impeccable work and were so careful with our yard and home.  We couldn't be more pleased with our overall experience."

-Jamie Anderson

We make a new deck in Penn Yan 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

    Installation

    Sign your proposal and watch your dreams become reality.

  • 4

    Enjoy

    Love your new deck and space you have to host parties and live!

3D Render Final Build
“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
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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.

Integrity

We deliver on our timeframe and proposal promises.

Financing Available

We offer financing options through our partners.

"I highly recommend Keystone for any deck project. These guys were nothing bud professional and courteous throughout the entire project. Rest assured you are in good hands. A++++"

- Ray Davis

"We cannot say enough good things about our experience with Mahlon and his team. From design to installation, everything was perfect. The crew was extremely professional and efficient. The workmanship and materials are superior and our deck came out beautiful. We would highly recommend Keystone Custom Decks."

- Kate Kuttruff

"Keystone Custom Decks recently built us a beautiful new deck. The process was so easy. Our options for materials were clearly laid out and the price was reasonable. The crews were polite, professional and SO QUICK. Our deck was done in 2 days! I would highly recommend them for anyone looking! We are thrilled with the result and have been enjoying so much more outdoor time as a family now. Thank you Keystone!!!"

- Becky Kaser
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Custom Decks in
Penn Yan, NY

As a homeowner in Penn Yan or the surrounding area, you want a beautiful outdoor living space.  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.

Penn Yan Deck Builder

To make your dream backyard a reality, we also know that you may want more than just a deck.  That is why we offer more than just custom decks in Penn Yan.

We also offer the following:

All these features will make your backyard dreams come true and make you a master host!