About Us.

Proudly serving Maryland homeowners for over 30 years.

About East Coast Landscape Design

Mark Simpson - Maryland Landscaper

East Coast Landscape Design Owner
Mark Simpson and his family

East Coast Landscape Design is the Washington D.C. area's leading licensed landscape design company. Located in Montgomery County, Maryland since 1979, the company, under the leadership of President Mark Simpson, has designed and installed landscape projects, including patios, outdoor kitchens, driveways, and retaining walls, throughout Montgomery and Howard Counties in Maryland. Today East Coast Landscape Design offers a wide variety of landscape services and installations. In addition to award-winning landscape design, we also specialize in hardscapes and water features. Whether you want to create a sophisticated backyard landscape, a peaceful outdoor room, an English rose garden, or you want to update your existing landscaping, call East Coast Landscape Design today for a consultation.

Our skilled team of stonemasons, trained landscapers, and staff are knowledgeable and ready to help you plan and install your East Coast Landscape Design home improvement project. You can consult us about how to integrate outdoor materials to complement your existing home style, or how to research material performance specifications. We stay in close contact with you to ensure the landscape we design and build is completed according to your requirements and specifications.

The East Coast Landscape Design Philosophy has always been to incorporate the work seamlessly with the existing landscape when advantageous, while using natural materials whenever possible. We have one goal – to create beautiful and functional outdoor spaces for our clients in Silver Spring, Columbia, Gaithersburg and throughout the Washington, DC area to enjoy for a lifetime.

For over 30 years, East Coast Landscape Design has proudly served the landscape design needs homeowners and business owners in areas like Potomac, Kensington, and Columbia in Maryland. Whether you are looking for custom landscaping, an outdoor waterfall and pond, or new landscape-quality retaining walls, the trained professional landscapers of the East Coast Landscape Design team and owner, Mark Simpson, are here to make your dreams a reality!

Mark Simpson
Owner East Coast Landscape Design


Our Certifications

  • Interlocking Certified Paver Installers
  • Certified Landscape Technician
  • Certified Pond Installer
  • Maryland Home Improvement Commission License
  • Better Business Bureau
  • Landscape Contractors Association
  • Recommended Landscape Contractor "Washington Checkbook"

  Trusted Reviews.


Angies List Super Service Awared 2013

They did a retaining wall. It's perfect. They showed up when they said they were going to and finished the job up nicely. I hadn't worked with them before...I have some jobs in the works, and I plan on reusing them...I would call on them again...

East Coast Landscape Affiliations

©2016 East Coast Landscape Design