Gazebos & Pergolas
Add charm and functionality to your outdoor space with a custom-built gazebo designed for beauty and durability.


HL Design Landscaping LLC is a woman-owned landscape design and hardscaping company based in Mount Airy, Maryland. Since 2011, we’ve been planning and building outdoor spaces for homeowners across Frederick, Carroll, Howard & Montgomery Counties, MD—combining thoughtful design with solid construction that’s built to last.
With over 45 years of combined experience, our team handles both design and installation, so your project feels cohesive from the first sketch to the final plant or paver. We offer grading and drainage, hardscaping, decks and patios, outdoor kitchens and fire features, driveways and walkways, landscaping and planting, tree services, water features, landscape lighting, fencing, and gazebos and pergolas.
HL Design Landscaping provides premium designs and the highest quality workmanship with competitive pricing.
We take training and craftsmanship seriously so your project is done the right way, not just the fast way.
Call or text 301-812-3358 or contact us for a FREE quote.
Add charm and functionality to your outdoor space with a custom-built gazebo designed for beauty and durability.
Add a touch of tranquility to your outdoor space with our waterfall and pond installation services.
Expert grading and drainage system design and installation services for residential and commercial clients.
Expert Hardscape design and installation services by SRW- and ICPI-certified installers / Nicolock Certified Contractor.
Cozy gas or wood-burning fire pits, custom outdoor stone fireplaces, and fire tables that extend your season year-round.
Complete landscape design, plantings, trees, shrubs, seasonal color, and lush gardens that soften and tie every hardscape together.
Professional low-voltage and LED outdoor landscape lighting that transforms your property after dark and highlights every feature.
Modern and classic fencing and privacy walls for beauty, privacy, and security.
Fully equipped custom outdoor kitchens, bars, pizza ovens, and built-in grilles, and bars for outdoor cooking and entertaining.
Custom retaining walls that solve grading issues plus low seat walls and garden borders that add style and function.
Durable driveways, including beautiful paver driveways designed for curb appeal and everyday function.
Expansive backyard patios and decks designed for living and entertaining.
Elegant paver and natural stone entryways and walkways that create instant curb appeal.
With our financing options, we make it easier for you to invest in your property’s curb appeal. We are locally owned and proud to serve our community, often providing services within the next business day. Let us help you bring your vision to life. Call or text us @ 301-829-9323 or request a FREE Quote to get started.