Create

your Dream outdoor living space

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Improve your lifestyle
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Host Great Parties
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Deck Builder in Ontario County, 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

"Our experience with Keystone Custom decks was beyond our expectations

and we can hardly express how pleased we are with our new deck and front porch railing, and with the service we received! They took great care of our yard and the neighbors' yards adjacent to ours and left it looking just as they had when they arrived."

- Lara Rhyner
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Become a Master Host in Ontario County 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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View Some Of Our Projects In The Ontario County Area:

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Trex Biscayne Deck / Stamped Concrete Patio – Penn Yan, NY

1400 Loree Rd-9

Trex Toasted Sand Deck/Open Porch/Fireplace – Penn Yan

765 Old Pines Trail-8

Trex Lineage Biscayne Deck/Open Porch – Penn Yan

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Flagstone Patio/Screened Porch/Outdoor Kitchen/Boat House – Penn Yan

2427 Avon Rd-3

Timbertech Legacy Ashwood Deck/Open Porch/Fireplace/Outdoor Kitchen – Penn Yan, NY

1S5A5522

Trex Pebble Grey Deck / Stamped Concrete Patio – Penn Yan, NY

5733 E Bluff Dr-1

Trex Rainier Deck / Outdoor Kitchen – Penn Yan, NY

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Trex Saddle Deck / Paver Patio / Pergola – Penn Yan NY

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Trex Saddle Deck / Cedar Pergola – Penn Yan, NY

Keystone Custom Decks

Covered Trex Deck and Outdoor Kitchen – Keuka Lake, NY

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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“We love our new deck! The entire experience was relaxed and professional from the initial quote process with Mahlon through to the final product with Anthony and his crew of very hard workers.
The gift of wine and two etched wine glasses was a lovely finishing touch! We highly recommend Keystone Custom Decks. They are replacing my father's deck next and he can hardly wait after seeing the quality of ours!"
-Terese Genecco

We make a new deck in Ontario County 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!

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“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.

"Absolutely amazing experience with Keystone Custom Decks. Truly hard working individuals with Nate and his team. Full covered deck, A-frame, beautiful finishes and could not be happier with the result. Look forward to using it for many years to come. Highly recommend using Mahlon/Nate and their teams."

- Drew Beganny

"Our deck came out as planned, it is beautiful. The Keystone team was very professional, polite and accommodating. The employees were friendly and respected our interest to socially distance while still keeping us informed of the progress and options. The workmanship was only eclipsed by their work ethic. I would highly recommend Keystone."

- Helen Kordela

"If you need a deck or porch that will be the envy of all your friends, hire Keystone to design and build something special."

- Phil Riehl
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Custom Deck Builder in
Ontario County, NY

If you own a home in Ontario County or nearby, 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.
To make your dream backyard a reality, we also offer the following in Ontario County:
All these features will make your backyard dreams come true and make you a master host!
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!