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Our firm

A Delray Beach Firm, Five Decades On

Founded by A. Grant Thornbrough in 1975, Carol Borough Perez became owner in 2019. A Florida registered landscape architect and ASLA member with more than 30 years of experience, Carol leads the firm's work in commercial and mixed-use development, city and community redevelopment, parks and recreation, and campus design. Her residential project Lisa's Garden, in Delray Beach, was added to the Smithsonian Institution's Archives of American Gardens.

The firm has earned numerous award-winning projects at the local, state, and regional level. AGTLAND operates on the belief that the best landscapes are created in harmony with current trends in community planning and sustainable design, while respecting the natural landscape they belong to. Five decades on, that philosophy still guides the firm's work across South Florida.

The Team

  • Headshot of Carol Borough Perez, Principal of AGTLAND

    Carol Borough Perez

    Principal

    Carol Borough Perez is a Florida Registered Landscape Architect and Principal and Owner of AGTLAND, P.A., formerly A. Grant Thornbrough & Associates, bringing more than 30 years of experience to the firm. Her work spans commercial and mixed-use development, city and community redevelopment, parks and recreation, and campus design, including projects for Lynn University and North Broward Preparatory School. Her residential project Lisa's Garden in Delray Beach was added to the Smithsonian Institution Archives of American Gardens, reflecting her commitment to thoughtful, enduring design leadership.

  • Headshot of Bryana Boileau, Associate at AGTLAND

    Bryana Boileau

    Associate

    Bryana Boileau earned her Bachelor of Landscape Architecture from the University of Florida in 2018 and has eight years of experience with AGTLAND. Since joining the firm, she has managed commercial, civic, and residential projects, bringing expertise in site planning, graphic presentations, and coordination between clients and design professionals. As a Lake Worth, Florida native, Bryana combines her knowledge of the native flora and other subtropical species to design landscapes that work harmoniously with our area's existing plants, pollinators, and people.

  • Headshot of Kayli Johnson, Associate at AGTLAND

    Kayli Johnson

    Associate

    Kayli Johnson earned her Bachelor of Urban and Environmental Planning from the University of Virginia in 2023 and joined AGTLAND in 2026. With a background in commercial landscape architecture projects, she contributes to a variety of commercial, civic, and residential work at the firm. As a native of Southwest Virginia, Kayli grew up on her family's beef farm and brings a passion for stewardship. Outside of the office, she enjoys playing tennis, cooking, and spending time with family & friends.

  • Headshot of Beth Brown, Office Manager at AGTLAND

    Beth Brown

    Office Manager

    Beth Brown holds a Bachelor of Science in Computer Science from Florida Atlantic University, earned in 1990, and brings more than 20 years of experience in educational publishing to AGTLAND. Since joining the firm in 2019, she has applied her expertise in computer science, writing, and project coordination to City and County applications, Historic Preservation Board research and submittals, accounting, reporting, and office operations. Her background as a Director of Development, author, and educator supports the firm's presentations, RFPs, and RFQs with precision and clarity.

We are a small firm, and we are growing. If you are a landscape architect or designer who shares our approach, see our open positions.