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 Wilmington, DE

“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 Wilmington 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.

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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 dream decks in the Wilmington area for over 30 years.

“We could not be happier with the finished product that Keystone installed.  The schedule was extremely well executed from start to finish.
The quality of the work was outstanding.  The addition on the back of our house looks like it was built with the original construction.
In summary, we expected the covered patio to look great, and Keystone exceeded our expectations.”
-Karen Hickes

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.

“Keystone Custom Decks is an amazing company!  Very well run.  Extraordinarily professional in their approach in both the quoting and presentation process and the job completion.  The quality of the work is first-rate and the people at Keystone are wonderful.

- Tom French

“We used Keystone for a recent deck replacement project.  They were patient as we changed our mind on the design several times.  They did a great job of communicating throughout the project, and the job was done in a timely manner with high quality.

- Joe Keer

"Couldn't be happier.  Their sales associate Mahlon made the design and specification process simple and fun.  Keystone was not the least expensive option, but they were the most trustworthy.  The team that built the deck was awesome.  They were all beyond friendly and it was obvious that they knew what they were doing.

- Joe Roth

"From the start, Marv worked very hard with me to come up with a great design for my deck and gazebo.  The builders Mike, Allan, and their crew were meticulous in their work, very polite, conscientious, and respectful.  It was a pleasure to work with such a professional company.

- Sandra Cheung

"Having just come off a horrific pool construction project with a horrible company, we were very nervous about another group of contractors.  However, Keystone has happily proven us wrong in our worries, and we could not be happier with our finished project.  Our project was everything we hoped it would be and more.

- Chris O.

Wilmington Deck Builder

If you own a home in Wilmington or nearby, 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 Wilmington, DE, and we want to make your dreams for your outdoor deck come true!


After spending a day with the family exploring Philadelphia or some of the beautiful surrounding countryside, taking a boat out on the Delaware River, or spending outdoor time with the family at Brandywine Creek Park, you can come home and unwind in your backyard on your dream outdoor living space!

Custom Decks in
Wilmington, DE

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.

Each member of the Keystone Custom decks team wants your job to be a success and the end result in your dream deck and accompanying features.  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 see what your end project will look like and make any necessary changes before construction even starts.


If you are looking to create your dream outdoor living space with a local deck builder in Wilmington, DE, 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!