Custom Decks & Patios in Mount Airy, MD

Turn your backyard into a true outdoor living room with a custom deck or patio from HL Design Landscaping LLC. Since 2011, we’ve been designing and building beautiful, low-maintenance outdoor spaces for homeowners in Frederick, Carroll, Howard & Montgomery Counties, MD.

Whether you want a cozy paver patio for entertaining or a multi-level deck to extend your living space, we’ll create a design that fits your home, lifestyle, and budget. We can also integrate steps, seating walls, lighting, and, when needed, connect to structures like pavilions or gazebos.

Local Deck & Patio Builder Since 2011

  • Paver and natural stone patios
  • Composite and wood decks
  • Steps, landings & connecting walkways
  • Built-in seating, fire pit areas & retaining/seating walls
  • Custom patios for outdoor kitchens & grills
Project Gallery
FREE Estimates

Residential & Commercial Hardscaping

  • Woman-owned and locally operated
  • 45+ years’ combined experience
  • 3-year hardscape warranty
  • Financing options available

We love transforming outdoor spaces into a beautiful, relaxing oasis that adds value and function.

Certified Installers You Can Trust

  • SRW- and ICPI-certified installers
  • Nicolock Certified Contractor
  • Concrete Masonry & Hardscapes Association (CMHA) affiliation
  • Maryland Home Improvement Commission (MHIC)–licensed contractor

HL Design will build you a beautiful deck or patio to the highest standards that drains properly, and is designed to last.

Deck & Patio Project Gallery

A few of the custom patios and decks we’ve built in Frederick, Carroll, Howard & Montgomery Counties, MD. Need help with a custom deck or patio design? Let HL Design Landscaping bring your vision to life.

Call or text 301-829-9323 or contact us to get started.

Have an Aging Deck or Cracked Patio?

If your existing concrete slab is sinking, your deck boards are soft, or railings don’t feel safe, it may be time to rebuild. We can remove old structures, correct grading and drainage, and replace them with a stable, long-lasting deck or patio that meets current standards—and looks 100× better. We serve residential and commercial clients in Frederick, Carroll, Howard & Montgomery Counties, MD, and surrounding areas.

Expert Hardscape Patio Design & Installation

In addition to custom decks and patios, HL Design Landscaping provides expert landscaping, tree service and hardscape design, including: retaining walls, walkways, outdoor kitchens, firepits & fireplaces, grading and drainage, landscaping, tree services, and hardscape design.

Call or text @ 301-829-9323 or request a FREE Quote to get started.

Quality Custom-Built Decks & Patios in Mt. Airy, MD

A well-designed deck or patio extends your living space, improves flow from indoors to outdoors, and boosts curb appeal. We design each project around how you actually use your yard—entertaining, relaxing, cooking, or all of the above—so the space feels natural, not like an afterthought. Call or text us @ 301-829-9323 or request a FREE Quote to get started.