your Dream outdoor living space

Due to current demand and our availability, we are serving this area on a project-by-project basis. Please contact us to see if we are able to build your project.

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Improve your lifestyle
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Host Great Parties
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Increase Your Home Value

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

Deck Builder in Harford County, MD

“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

 “We’re very excited

to use our new outdoor space.  With football season around the corner it will get a lot of use!”

- Erica Evans

“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 Harford County with a custom outdoor 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

    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 dream decks in Harford County for over 30 years.

Words can't describe how happy we are with our deck.  After working with several contractors over the last year, Keystone was by far the best experience we have had making improvements to our home.
Communication was excellent throughout and they were even able to finish our job almost a month earlier than expected.
As an added bonus, every person I spoke to in the company was professional, kind, and respectful!  I can't recommend this company enough!"
-Andrew S.

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 the space you have to host parties and live!

3D Render Final Build
“Keystone just finished our deck today!  They started in the timeframe they noted in our quote.  They sent a 3D rendering of the finished product and were so easy to communicate with  Would definitely recommend!”
- Krista Alfonse

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 met the Keystone team at an outdoor convention and talking to them made us feel confident and comfortable to work with them on our Trex deck.  Anthony was our onsite manager and the team worked really hard to get our deck done in the timeline as promised. The team was super professional stayed super focused on the job.

- Kristen Stanton

“Truly an outstanding experience start to finish with an exceptional outcome. From the beginning, Ron Yoder helped us envision our dream deck and move it to reality. The crew, led by Steven, Marlin, and Johnny, were absolute professionals from start to finish; were responsive to our questions during construction; and are clearly masters of their craft. Highly recommend if you are in the market for a new deck/outdoor living structure.

- Drew B.

"We absolutely LOVE our new deck from Keystone! Our crew - Michael, Marlin, and Ivan - were friendly, hard-working (even in a heatwave), and maintained good communication with us throughout the process. They even welcomed the non-stop questions from my 3-year-old about what they were doing, without skipping a beat ... very much appreciated!

- A. Clarke

"Top notch service from the initial conversation with Ron, through all of our township code challenges managed confidently by Dave, and to the final product executed expertly by Daniel, Dave, and Dave. Highly Recommended.

- Mike Puchtler

"These guys did what they promised, on time, and then some. The best contractor we have ever worked with. I would recommend them to anyone. Incredible attention to detail. Positive work ethic and commitment. Daniel's team was amazing.

- Sam Milkman

Harford County Deck Builder

If you own a home in Harford County, you want a beautiful outdoor living space for hosting, relaxing, and spending quality family time.  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 with additional features for over 30 years.

We are a custom deck builder in Harford County, MD, including the following locations:

  • Pylesville
  • Dublin
  • Darlington
  • Jarrettsville
  • Forest Hill
  • Bel Air
  • Fallston
  • Edgewood
  • Belcamp
  • Aberdeen
  • Havre De Grace
  • Norrisville
  • Whiteford
  • Whispering Woods
  • Edgewood

And many more locations in the greater Northern Maryland areas!

Custom Decks in
Harford County, MD

To make your dream backyard a reality, we also know that you may want more than just a deck.  That is why we are more than just a local deck builder; we also offer multiple custom features to go along with your custom deck.
We build porches, patios, pergolas, outdoor kitchens, fire pits and fireplaces, masonry features, and water features to accompany your custom deck.
All of these features will allow you to create a personalized space where you will make new memories, share family meals, relax in your backyard, and become a master host with a beautiful outdoor space.

Every one of our team members at Keystone Custom Decks, from sales to office to the crew, wants your deck project to be a success and enjoyable experience for you.  From the initial estimate to the final product, our team of deck builders and deck contractors will walk with you each step and keep you informed.


We give you a detailed proposal and complimentary 3D rendering of your project.  We want you to be able to see what your finished project will look like before we begin construction, that way you can make any changes necessary.


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

Information courtesy of Keystone Custom Decks, 158 Toddy Dr, East Earl, PA 17519

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!