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

Deck Builder in Penn Yan, NY

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

Become a Master Host in Penn Yan with a New Backyard Deck

  • 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.

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    Be Proud
    of Your Space

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

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.

“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


    Sign your proposal and watch your dreams become reality.

  • 4


    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

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.

"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

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.

If you live in Penn Yan, NY, you understand the value of beautiful outdoor spaces that enable and enhance your enjoyment of the natural beauty around the village. 

At Keystone Custom Decks, we create outdoor spaces like decks, patios, porches, and pergolas. A deck can greatly enhance your enjoyment of the outdoors as it gives you space to relax or host friends in the great outdoors. Additionally, it adds value to your home!

Working with Keystone is simple. 1) Give us a call to get your project estimate. 2) Get a design proposal including a 3D rendering. 3) Sign the proposal and watch your dreams take shape! 4) Enjoy your beautiful new space!

Penn Yan, New York, is a picturesque village located in Yates County, in the heart of the Finger Lakes region. Nestled at the northern tip of Keuka Lake, Penn Yan is known for its stunning lake views, vineyards, and historic charm. It serves as a gateway to the Finger Lakes wine country, making it a popular destination for wine enthusiasts and outdoor lovers. The official government website of Penn Yan provides valuable information and resources for residents and visitors.

The clear waters of Keuka Lake are a defining feature of Penn Yan, offering opportunities for boating, fishing, swimming, and water sports. The village's lakefront area features a public beach, parks, and a pier for fishing and taking in scenic views of the lake. Keuka Lake's unique Y-shape allows for a variety of water-based activities.

Penn Yan is at the heart of the Keuka Lake Wine Trail, one of the Finger Lakes' renowned wine regions. The trail encompasses numerous wineries and vineyards where visitors can indulge in wine tastings, vineyard tours, and breathtaking vistas of the surrounding countryside.

The village's downtown area is characterized by historic architecture, boutique shops, art galleries, and a range of dining options. It's a pleasant place for leisurely strolls, shopping for unique gifts, and savoring farm-to-table cuisine.

Outdoor enthusiasts can explore nearby state parks, including Keuka Lake State Park, which offers hiking trails, picnicking areas, and a boat launch. Additionally, the Keuka Outlet Trail provides scenic opportunities for hiking and biking along the old towpath of a historic canal.

Penn Yan hosts various community events and festivals throughout the year, such as the Keuka Arts Festival, where local artists showcase their work. The village's warm and welcoming community spirit is a hallmark of its appeal.

In addition to Penn Yan's local attractions, the Finger Lakes region offers numerous points of interest. Here are some top-rated attractions and landmarks in the area according to TripAdvisor:

  1. Keuka Lake Wine Trail - A wine trail known for its wineries and stunning lake views. Website:

  2. Watkins Glen State Park - A scenic state park with gorge trails, waterfalls, and lush vegetation. Website:

  3. Corning Museum of Glass - A museum in Corning, NY, showcasing glass art and glassblowing demonstrations. Website:

  4. Seneca Lake Wine Trail - Another wine trail with wineries and vineyards along Seneca Lake. Website:

  5. Finger Lakes Wine Country - A renowned wine region with numerous wineries and vineyards. Website:

  6. Watkins Glen International - A racetrack in Watkins Glen, NY, known for NASCAR and other motorsports events. Website:

  7. Sonnenberg Gardens & Mansion State Historic Park - A historic estate with beautiful gardens and a Victorian mansion in Canandaigua. Website:

  8. Montezuma National Wildlife Refuge - A wildlife refuge with walking trails and birdwatching opportunities. Website:

  9. Women's Rights National Historical Park - A historic park in Seneca Falls dedicated to the women's suffrage movement. Website:

  10. Grimes Glen - A scenic hiking trail leading to waterfalls and natural pools for swimming in Naples, NY. 

The zip code for Penn Yan, NY, is typically 14527.

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!