your Dream outdoor living space

Vector Smart Object3 copy
Improve your lifestyle
Vector Smart Object
Host Great Parties
Vector Smart Object1
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!

“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

 “The most professional

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

- Guiseppe Troisi

“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 Penn Yan with a custom outdoor deck and 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 living room. Happy lady lying down on comfortable pillows daydreaming thinking. Beautiful young Asian chinese girl.

    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.

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 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 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 Green Sky Credit.

"Thanks Marv, Kevin, and team.  You are the best - courteous from the beginning to the end and expert craftsmen.  You designed and built exactly what we were looking for in our outside living space.  We will enjoy it for years to come."

- Charles DiComo

"Wonderful people to work with, and they offer superior quality deck and service.  I had a great experience with Ron and Levi.  Highly recommend!"

- Zhen Guo

"Fantastic job from beginning to end.  The workmen were always on time, worked the entire day, and cleaned up every evening.  I would not hesitate to recommend them to anyone!"

- Carolyn Karcher

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.
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 for over 30 years.

We are a custom deck builder in Penn Yan, NY.  We serve all homes and towns along Keuka Lake and the surrounding area.

Click below to view a recent project that we completed just outside of Penn Yan, in Keuka Park:

Whether you own a home in Penn Yan or a cottage along Keuka Lake, you know the history, beauty, and many activities to do on the lake and area.  After a day fishing or boating on Keuka Lake, spending a day on the wine trail, or enjoying an afternoon with the family on the Outlet Trail; come home to your dream outdoor space to relax and unwind! 

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!
At Keystone Custom Decks, the goal of our team is to serve and work with each one of our customers from beginning to end.  From the initial estimate to the finished deck, our team of deck builders and deck contractors will walk with you during each step of the process.


As part of the process, we give you a complimentary 3D rendering of your project and a complete proposal and estimate.  This allows you to see exactly what you are getting before construction starts and avoid any surprises.


If you are looking to create your dream outdoor living space with a local deck builder in Penn Yan, NY, then look no further than Keystone Custom Decks.  We look forward to serving you in the process and becoming your local deck contractor!