For more than 35 years, Harold Leidner Landscape Architects has custom-designed and built exceptional pools, gardens, and outdoor living environments for discerning homeowners in Highland Park, University Park, Preston Hollow, Dallas, Fort Worth, Westover Hills, and Westlake.

From the beginning, our belief has been simple: the designers who conceive an exterior should be the ones who build it. Like architects, licensed Landscape Architects are trained to unite aesthetics with construction detail, so we lead every phase, from concept to construction completion and long-term concierge care.

We do not sell our plans to outside contractors. We do not take a fee to manage teams we didn’t hire. We design, build, steward, and guarantee our work-end to end. When on-site questions arise (and they always do), the design lead is present to answer them, protecting intent, quality, and longevity.

This integrated approach produces exteriors that are beautifully curated and functionally sound: materials chosen for durability, systems planned for efficiency, and environmental decisions made with the guidance of our years of experience and delivered through a single, accountable source.

While technology enhances our process, our ideas still begin the timeless way: with a pencil and a roll of trace paper.

When it’s all said and done, a Harold Leidner exterior is more than beautiful-it’s iconic.

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I was born in Dallas, Texas, and graduated from Hillcrest High School. After years of running my own small landscape business, I pursued my passion for Landscape Architecture from Texas A&M University. Additionally, I worked at Neiman Marcus, where I learned everlasting lessons about customer service.

Once I had my degree from Texas A&M University and state licensure in Landscape Architecture, I focused on residential design and construction.

I’ve owned my Landscape Architectural business for over 35 years. For over 35 years, we have stayed small and focused on high-end residential design and construction. As I tell all of my clients, when I first meet them, “if you like me, you’re going to see a lot of me. If you don’t, we’re probably a bad fit.” Our clients like a simple point of contact and value working with a Landscape Architect. I guide them from beginning to end through the design, construction, and ultimately, the care of their property. My guarantee to all my clients is we take Total Accountability.

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Landscape Architecture Success Team

Harold Leidner, RLA, ASLA

Harold Leidner, RLA, ASLA

Founder | Bachelor of Science, Landscape Architecture, Texas A&M University
Jared Leidner, PLA

Jared Leidner, PLA

Director of Sales | Master of Landscape Architecture, University of Colorado, Denver

Landscape Architecture Team

Dean Wilson, PLA, ASLA

Dean Wilson, PLA, ASLA

Bachelor of Landscape Architecture, Oklahoma State University | Bachelor of Science in Landscape Contracting, Oklahoma State University
Heather Andrzejewski

Heather Andrzejewski

Contract Administrator | Bachelor of Science in Construction Science, The University of Oklahoma
Jim Hanke, RLA

Jim Hanke, LA Emeritus

Bachelor of Science in Landscape Architecture, California Polytechnic State University
Annabeth Valdez

Annabeth Valdez

Bachelor of Science in Architecture, Texas Tech University | Master of Landscape Architecture, University of Texas, Arlington

Pool & Construction Team

David Newsome

David Newsome

Construction Manager | Bachelor of Arts, Bridgewater State College, Boston University
Brent Langdon

Brent Langdon

Project Manager | Bachelor of Landscape Architecture, Oklahoma State University
Brent Bailey

Brent Bailey

Project Manager | Bachelor of Landscape Architecture, Texas A&M University

Concierge Team

Denise Metzger

Denise Metzger

Concierge Manager & Landscape Irrigation Technician LTI #IT0002820 Texas Master Certified Nursery Professional TMCNP #2653
Guadalupe Bueno

Guadalupe Bueno

Assistant Concierge Manager

Accounting & Office Team

Amy Dement

Amy Dement, CPA

CCIFP | Master of Science in Accounting, SMU | Master of Science in Business Administration, Union University
DeLynda Lanzillo

DeLynda Lanzillo

Administrative Assistant & Accounts Payable
Ariana Aleman

Ariana Aleman

Client Service Administrator
Jennifer West

Jennifer West

Creative Development Strategist

As seen in…

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Let us build your work of art.

You want beautiful, unique outdoor living that is the envy of those you know and those you don’t. Our licensed landscape architects have spent decades designing and building for the most discerning homeowners.