Your Local Backyard Patio Builders

Enhance your deck with a custom backyard patio

Build the backyard patio of your dreams

  • brick

    Unique Stone Look

    Whether it is pavers or natural stone, patios bring a unique stone and craftsmanship finish to your backyard.

  • Give Your Backyard Style

    From rustic cobblestone to modern, choose the patio style with the vibes that you want.

  • Utilize Ground Space

    Make use of space under your deck or porch, especially if you have a walk-out basement.

Matthew Parambil:

“From the design to the final build, we were extremely pleased with the whole process.  We really enjoy our new outdoor living space immensely!”

Choose the stone and features for your custom backyard patio


Flagstone Patios

Natural stone that shows the beauty and quality of nature.

Patios - Paver Patios

Paver Patios

Made to endure long-term heavy use, paver patios bring a beautiful design and style to your backyard.


Stamped Concrete

Customize the pattern, texture, and feel of your patio with stamped concrete.  Learn more about decorative concrete here.

Patios - Covered Patios

Covered Patios

Protect yourself from outdoor elements by building your patio under a porch, pergola, or deck.

Patios - Seating Walls _ firepits

Seating Walls & Firepits

Create natural borders and a place to sit while enjoying your firepit and patio.

Patios - Brick Accents

Brick Accents

Brick accents come in a variety of colors and finishes and bring a distinct look to your backyard.

We make the process as easy as possible

  • 1

    Call Us

    We’ll learn more about your space for the patio and schedule an estimate.

  • 2

    Design Proposal

    Receive your project quote with your patio shown in a 3D rendering.

  • 3


    Sign your proposal and watch your dream patio become reality.

  • 4


    Love your new patio!

Mark M:

“We LOVE the deck!  It is absolutely beautiful, and the workmanship is superb.  Your attention to detail is absolutely top-notch.”

What you can expect when Keystone Custom Decks builds your backyard patio ➡

Turn-key Projects

We take care of every part in building your patio.

Lifetime Workmanship Warranty

We stand behind our workmanship for the life of your patio.


We build your patio on schedule and on budget.

Manufacturer Product Warranties

Our products come with manufacturer warranties.

“From pre-construction planning until the start of construction, these guys did a great job.  Great team, great people, a joy to work with. Would recommend to anyone who wants a great outdoor living space.”
- Mike Murphy

Backyard Patios for
PA, NY, NJ, DE, & MD

Are you wanting to incorporate a patio in your backyard deck, porch, or pergola, but you don’t know where to start?

At Keystone Custom Decks, we know how overwhelming the construction process can be.  That is why we are a patio and deck builder with turn-key construction projects with our custom backyard patios.

Because we want your patio to be durable and lasting, our construction teams make sure every patio we build has a good, solid base.  Our goal is for your backyard patio to be as maintenance and weed-free as possible, and we design and build your custom patio with this in mind.

We’ve exceeded the expectations of many homeowners with backyard patios throughout Pennsylvania, New York, New Jersey, Delaware, and Maryland.

We offer flexible design options for patios.  If you can dream, we can build it! Our teams maximize the available space to allow for features like firepits and outdoor grilling stations

Besides being a custom deck and patio builder, Keystone Custom Decks also builds the following:

Patio FAQs

We offer a variety of designs and options for patios including...

  • Wet lay flagstone
  • Dry lay pavers
  • Stamped concrete

If you are not sure which patio works best for your living space, our design team will work with you and help design the best patio for your backyard or sidewalk.

Wet lay flagstone patios are made from flagstone which is a hard, flat stone.  Flagstone can either be cut or split.

Flagstone patios are becoming more popular because of the distinctive, natural look.  It typically comes in red, blue, or buffed colors.

Flagstone is extremely durable and can last for centuries while requiring little to no maintenance.

It also provides a beautiful, natural aesthetic for your patio!

Because flagstone reflects the sun, it can get pretty warm underfoot.  Still, flagstone handles different climates well and doesn’t expand and contract when the weather changes.

Flagstone requires little maintenance beyond regular sweeping away of debris that could leave stains or mold on the stone.

Unlike pavers which sometimes need readjustments to keep it level as it settles, a flagstone patio set in concrete results in a permanent patio that requires virtually no maintenance.

Bleach and water will remove most mold stains, but grease or rust stains call for harsher chemicals. Because flagstone is laid in pieces, it’s easy to replace broken or cracked stones without tearing up the whole patio.

A flagstone patio can last a lifetime if taken care of properly.

Flagstone maintenance tip:  Don’t seal your flagstone. In the hot sun, sealed flagstone becomes more likely to deteriorate and discolor