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 Farmington, 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 Farmington 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.

We are thrilled with our new porches! Keystone Custom Decks went above and beyond our expectations! From the design with Mahlon to the execution with Nate and Anthony we were so impressed with their professionalism.

They all were friendly and polite and so easy to work with. The exterior of house was completely transformed. We really enjoyed working with them and have committed to working with them again in the future!"

-Amber Degner

We make a new deck in Farmington 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.

"We couldn’t be happier with our carport and outdoor living space built by Keystone Custom Decks! They are beyond an amazing team of guys who are extremely hard working, very nice, professional, and punctual, and they always kept in contact throughout the entire project. The quality of work was absolutely amazing and I can not believe how fast it got done, this is a top notch company! I am truly impressed and would highly recommend them, they will exceed all of your expectations! Thank you all so much for our beautiful outdoor living space as well as our absolutely beautiful carport, you guys are amazing!"

- Gavin Polmanteer

"They came highly recommended, but we still couldn't be more pleased with our experience with Keystone Custom Decks. From design, to planning, execution, and clean up, the team exceeded any expectations. All team members were kind, hard-working, courteous, and professional and they do amazing work! We are thoroughly enjoying our new backyard and felt really great about working with this superb business that made it all happen."

- Holly Hindman

"We cannot praise Keystone Custom Decks enough. The whole process was seamless. Mahlon took our vision and made it reality. The entire crew was exceptional. They were so professional, hard working and meticulous with everything from big decisions to the smallest details. We would highly recommend them and would definitely hire them again for any future projects."

- Claudine Ninestine

Custom Decks in
Farmington, NY

If you are a homeowner in Farmington 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 Farmington, NY.  We also serve the surrounding areas.  It doesn't matter if you are in the Town of Farmington or nearby; we want to make your outdoor dreams come true! 

If you live in the Farmington area, you know how much there is to do in the area, whether it is shopping, visiting one of the nearby lakes, or spending some time on a golf course.  After spending some time at the Finger Lakes Gaming & Racetrack, enjoying a day on a lake, or shopping at Eastview Mall; you can come home to your dream outdoor space to relax and unwind! 

Farmington, New York, is a town located in Ontario County in the Finger Lakes region. Nestled between the cities of Rochester and Canandaigua, Farmington offers a balance between rural charm and access to urban amenities. The town is known for its agricultural heritage, natural beauty, and proximity to recreational opportunities. Visitors to Farmington can explore its scenic landscapes, enjoy outdoor activities, and experience the rich history of the area. The official government website of Farmington provides valuable information and resources for residents and visitors alike.

The Ganondagan State Historic Site, located within Farmington, is a significant cultural attraction. It is the site of a 17th-century Seneca town, offering visitors the opportunity to learn about the history and culture of the Seneca Nation. The site features a museum, walking trails, and reconstructed longhouses.

For outdoor enthusiasts, Farmington is close to several state parks and natural areas. The nearby Powder Mills Park offers hiking trails, fishing opportunities, and picnic areas. The park's fish hatchery is a popular attraction, where visitors can learn about fish conservation efforts.

Farmington is conveniently located near shopping and dining options. Eastview Mall, one of the largest shopping centers in the region, provides a wide range of retail stores, restaurants, and entertainment options.

In addition to Farmington'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. Finger Lakes Wine Country - A renowned wine region with numerous wineries and vineyards. Website:

  2. Canandaigua Lake - One of the Finger Lakes offering boating, fishing, and water sports. 

  3. Bristol Mountain Ski Resort - A popular ski and snowboard destination in the winter and a hiking and mountain biking spot in the summer. Website:

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

  5. Ganondagan State Historic Site - A cultural and historical site showcasing Seneca heritage and history. Website:

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

  7. Ontario County Park at Gannett Hill - A park with hiking trails and panoramic views of the Finger Lakes region. Website:

  8. High Falls - A scenic waterfall and historic district in downtown Rochester. 

  9. Mendon Ponds Park - A large park in the Rochester area with hiking trails, wildlife observation, and winter sports. Website:

  10. Roseland Waterpark - A family-friendly waterpark in Canandaigua with slides, pools, and water attractions. Website:

For more information about Farmington, its attractions, and community resources, please visit the official government website of Farmington:

The zip code for Farmington, NY, is typically 14425.

These guys are the definition of professional. Always on time, always communicating, always respectful. We did a 1,000SQF composite deck with a screened in section, heaters, lighting, cable railing...the works and it all came out awesome. The attention to detail was incredible. You'll never hear a curse word or see a cigarette butt in your yard. We had the pleasure of having Anthony and Ernest as the primary foremen, but the whole team is incredible. I was honestly sad to see them go because it was such a pleasure to watch their progress! Strongest recommendation of any company I've worked with over the years on home projects!
- Trevor DiMarcio
"I've never dealt with a contractor that was so responsive, and stuck to their timeline. They came every morning and told us the schedule and stuck to it. They went above and beyond, and answered all our questions through the process and revised the project when we asked. We highly recommend Keystone for any outdoor projects." 
- Kyle and Agatha Edkin

Farmington 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 Farmington.

We also offer the following:

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!