
Profile
The relationship between the natural environment and the built landscape has long fascinated Renée Byers. Her desire to create sophisticated and welcoming landscapes for private residences led to the establishment of her namesake firm in 1998. Since then—inspired by the land, architecture, and her clients’ needs—Renée Byers Landscape Architect, P.C. has built evocative environments across the northeast.
Whether for an estate, an intimate garden, or something in between, the firm’s portfolio exemplifies flexible artistry and imagination. Underpinned by technical skill and thorough approaches to regulatory approvals, the essence of a place emerges. Earth is moved. Stairs and water cascade. Walls are functional objects of beauty. Paths and vistas are private or majestic or both.
Sensible solutions root every endeavor and the integration of captivating details and elements—stonework, land grading, lighting, swimming pools, metal and woodwork, planters and furnishings—make logical connections to the architecture and complete a composition. Patience for the long view, collaboration, and meticulous planning shape the complexities of landscape and intended purpose for happy and elegant outcomes.
The unpretentious grace and sense of discovery found in the touchstone landscapes of Renée Byers ascends from love of the land and context, technical dexterity, a listening ear, and discipline. For this, Renée and her talented team have received numerous accolades from clients, peers, in the media, and from the American Society of Landscape Architects. She has recently been named an ASLA Fellow, one of the highest national awards given by the organization.
People
People

Renée Byers
Principal
Landscape Architect Renée Byers is originally from Des Moines, Iowa. Down-to-earth and energetic, she thrives on her work and rapport with colleagues and clients. Although a longtime resident of the greater New York area, Renée’s early experience of place is rooted in the combination of being raised in a midwestern city and exposure to the surrounding natural environment by family who farmed the Iowa countryside.
Educated in Landscape Architecture at the University of Minnesota, Minneapolis, Renée combined her passions for architecture, art, and horticulture. Additional studies in architectural history while in southern France established the classical traditions and painterly influences found in her landscape compositions today. Renée’s early career began in New York City, where she ultimately became a project landscape architect leading teams on large-scale projects across the country.
Long-enamored of the iconic residential architecture and dramatic settings in Westchester and Fairfield Counties, Renée subsequently established her own firm to focus on residential landscapes. She saw potential in the region’s steep, rocky sites that were under-appreciated and oft neglected. She likewise enjoys challenging terrain regardless of location and uses topography, plantings, and architectural elements to create expressive, cohesive experiences. Timeless rules of proportion are employed to create gardens that look planned and natural at the same time and are beckoning, sustainable places. From master site planning, to lighting design, to designing custom furniture, Renée’s broad experience and personal attention furthers the field of Landscape Architecture in ways indispensable to collaborating architects, design professionals, and her residential clients. Renée, along with her accomplished studio team, nurture relationships just as they care for the land.
Renée is a registered Landscape Architect in New York, Connecticut, and New Jersey and is a Fellow of the American Society of Landscape Architects (ASLA). In Norfolk, CT, she has served as a director on the Doolittle Lake Company board and the Chair of its Environmental and Architectural Review Committee. In Bronxville, NY she served on the Bronxville Design Review Committee and has consulted for the Bronxville Historical Conservancy. Renée is also a frequent lecturer at the School of Professional Horticulture at the New York Botanical Garden and for The Cultural Landscape Foundation (TCLF).

Kevin Costello
Senior Associate, Studio Director
Trained as an architect, Kevin applies his specialized skill set to realize landscapes of exceptional clarity and continuity. At RBLA, he leads complex projects from conceptual design through final construction. Bridging leadership, collaboration, design, and production in his role as Studio Director, he serves as an essential liaison between clients, contractors, consultants, and our in-house team. Kevin combines deep theoretical knowledge with a hands-on passion for the craft of building landscapes. He holds dual degrees — a Bachelor of Fine Arts and a Bachelor of Architecture — from the Rhode Island School of Design.

Greta Mattheis
Associate
Greta is an integral contributor to the design and management of projects, bringing expertise in site analysis, design development, and construction documentation. Raised in rural Virginia, she developed an early appreciation for the beauty and complexity of natural landscapes. Drawing on her training in design and garden history, Greta approaches landscape architecture with a commitment to thoughtful, contextually designed solutions across various scales and styles. She holds a B.S. in Geology and Environmental Science from the College of William & Mary and a Master of Landscape Architecture from the University of Virginia.
Garry Joseph
Associate
Garry brings finely-honed design and technical expertise to the studio, with particular strengths in graphic representation, concept development, and construction detailing. His experience spans residential and commercial landscapes, where he pairs a refined design sensibility with the technical precision to carry projects from early visualization through construction.
His passion for landscape architecture took root while pursuing his degree, during which he served as President of the ASLA Student Chapter. Garry holds a Bachelor of Science in Landscape Architecture from the University of Connecticut.
George E. Byers
Project Imagery and Fieldwork Operations
After a successful career as a camera operator in film and videography, George (Geb), Renée’s husband, has joined the firm to manage project photographic and drone documentation. He also applies his cinematic experience to RBLA’s landscape lighting projects and handles myriad site management, logistics and procurement efforts. Geb holds a B.A. from the University of Minnesota as well as a lengthy resumé of motion picture and episodic television credits.
Elizabeth Garrett
Landscape Designer & Office Manager
Prior to pursuing studies in landscape design, Liz enjoyed a successful career in retail, both as a merchandise buyer and then as a garden furnishings store owner. For RBLA, she wears multiple hats, merging expertise in horticulture and garden design with adroit project, vendor, and contractor management. Liz holds a B.A. from Duke University and a Certificate in Landscape Design from the School of Professional Horticulture at the New York Botanical Garden.

Renée Byers
Principal
Landscape Architect Renée Byers is originally from Des Moines, Iowa. Down-to-earth and energetic, she thrives on her work and rapport with colleagues and clients. Although a longtime resident of the greater New York area, Renée’s early experience of place is rooted in the combination of being raised in a midwestern city and exposure to the surrounding natural environment by family who farmed the Iowa countryside.
Educated in Landscape Architecture at the University of Minnesota, Minneapolis, Renée combined her passions for architecture, art, and horticulture. Additional studies in architectural history while in southern France established the classical traditions and painterly influences found in her landscape compositions today. Renée’s early career began in New York City, where she ultimately became a project landscape architect leading teams on large-scale projects across the country.
Long-enamored of the iconic residential architecture and dramatic settings in Westchester and Fairfield Counties, Renée subsequently established her own firm to focus on residential landscapes. She saw potential in the region’s steep, rocky sites that were under-appreciated and oft neglected. She likewise enjoys challenging terrain regardless of location and uses topography, plantings, and architectural elements to create expressive, cohesive experiences. Timeless rules of proportion are employed to create gardens that look planned and natural at the same time and are beckoning, sustainable places. From master site planning, to lighting design, to designing custom furniture, Renée’s broad experience and personal attention furthers the field of Landscape Architecture in ways indispensable to collaborating architects, design professionals, and her residential clients. Renée, along with her accomplished studio team, nurture relationships just as they care for the land.
Renée is a registered Landscape Architect in New York, Connecticut, and New Jersey and is a Fellow of the American Society of Landscape Architects (ASLA). In Norfolk, CT, she has served as a director on the Doolittle Lake Company board and the Chair of its Environmental and Architectural Review Committee. In Bronxville, NY she served on the Bronxville Design Review Committee and has consulted for the Bronxville Historical Conservancy. Renée is also a frequent lecturer at the School of Professional Horticulture at the New York Botanical Garden and for The Cultural Landscape Foundation (TCLF).

Kevin Costello
Senior Associate, Studio Director
Trained as an architect, Kevin applies his specialized skill set to realize landscapes of exceptional clarity and continuity. At RBLA, he leads complex projects from conceptual design through final construction. Bridging leadership, collaboration, design, and production in his role as Studio Director, he serves as an essential liaison between clients, contractors, consultants, and our in-house team. Kevin combines deep theoretical knowledge with a hands-on passion for the craft of building landscapes. He holds dual degrees — a Bachelor of Fine Arts and a Bachelor of Architecture — from the Rhode Island School of Design.

Greta Mattheis
Associate
Greta is an integral contributor to the design and management of projects, bringing expertise in site analysis, design development, and construction documentation. Raised in rural Virginia, she developed an early appreciation for the beauty and complexity of natural landscapes. Drawing on her training in design and garden history, Greta approaches landscape architecture with a commitment to thoughtful, contextually designed solutions across various scales and styles. She holds a B.S. in Geology and Environmental Science from the College of William & Mary and a Master of Landscape Architecture from the University of Virginia.
Garry Joseph
Associate
Garry brings finely-honed design and technical expertise to the studio, with particular strengths in graphic representation, concept development, and construction detailing. His experience spans residential and commercial landscapes, where he pairs a refined design sensibility with the technical precision to carry projects from early visualization through construction.
His passion for landscape architecture took root while pursuing his degree, during which he served as President of the ASLA Student Chapter. Garry holds a Bachelor of Science in Landscape Architecture from the University of Connecticut.
George E. Byers
Project Imagery and Fieldwork Operations
After a successful career as a camera operator in film and videography, George (Geb), Renée’s husband, has joined the firm to manage project photographic and drone documentation. He also applies his cinematic experience to RBLA’s landscape lighting projects and handles myriad site management, logistics and procurement efforts. Geb holds a B.A. from the University of Minnesota as well as a lengthy resumé of motion picture and episodic television credits.
Elizabeth Garrett
Landscape Designer & Office Manager
Prior to pursuing studies in landscape design, Liz enjoyed a successful career in retail, both as a merchandise buyer and then as a garden furnishings store owner. For RBLA, she wears multiple hats, merging expertise in horticulture and garden design with adroit project, vendor, and contractor management. Liz holds a B.A. from Duke University and a Certificate in Landscape Design from the School of Professional Horticulture at the New York Botanical Garden.
Collaborations
- Alice Aycock
- Apparatus Architecture
- Archer Engineering Co.
- Arthur Chabon Architect
- Abelow Sherman Architects, LLC
- B-Five Studio, LLP
- Bradley Thiergarten Interiors
- Chapin Interiors
- Charles Hilton Architects
- Crisp Architects
- Dale Blumberg Interiors
- DiLandro Andrews Engineering P.L.L.C.
- E2 Engineers
- Eve Robinson Associates
- Foley & Cox
- Grade New York
- Hoos David Architecture
- Hudson Engineering and Consulting, PC
- Ivan David Engineers and Associates
- Jane Krupp Design
- Jaime Donate Architect
- JBMP Architecture
- John Dean Davis Architects
- John B. Murray Architects
- Joseph Stannard Design
- Kathleen Hay Designs
- Ken Gemes Interiors
- Larry Weaner Landscape Associates
- McC Architecture, PLLC
- Michael Lewis Architects
- Michael R. Davis Architects, PC
- Miguel Sostre Architecture
- Muller Engineering
- Orsman Design, Inc.
- Paul J. Jaehnig, Wetlands and Soil Consulting
- Pimlico Interiors
- Radoslav Opacic Architects
- Robert S. Burton Architect
- Robert Young Architects
- Rosamund A. Young, Architect
- Samuel Botero Associates
- Sandra Steele Schneider Interiors
- Scott Koniecko Architects
- Shenton Architects, LLP
- STAR Lighting Design
- Studio PPARK Architecture
- Thread Collective
- TRC Raymond Keyes, Inc.
- Victoria Hagan
- Water Shapes
Recognition
Collaborations
Awards
- At Home FC, A-List Award Winner, Landscape: Less than 1 Acre, 2024
- At Home FC, A-List Award Winner, Landscape: Greater than 1 Acre, Litchfield County Retreat, 2022
- Luxe Magazine, Gold List, 2022
- At Home FC, A-List Award Winner, Landscape: Greater than 1 Acre, Riverfront Transformation, 2021
- At Home FC, A-List Award Finalist, Landscape: Less than 1 Acre, Wrought by Hand, 2021
- Luxe, RED Award Winner, Landscape Design NY Region, Collaboration & Craft, 2020
- At Home FC, A-List Award Finalist (Guest House Garden), Landscape: Less than 1 Acre, The Garden Came First, 2020
- At Home FC, A-List Award Finalist, Landscape: Greater than 1 Acre, Hudson Valley Getaway, 2020
- New York Cottages and Gardens, Innovation in Design Award, Garden Design, Hudson Valley Getaway, 2017
- Hobi Award Winner, Best Outdoor Living Environment, The Garden Came First, 2013
- National ASLA
- American Society of Landscape Architects Council of Fellows, 2023
- ASLA Connecticut
- Residential Landscape Architecture Design, Merit Award, Creekside Residence, 2023
- Residential Landscape Architecture Design, Merit Award, Riverfront Retreat, 2023
- ASLA New York
- Residential Landscape Architecture Design, Merit Award, Creekside Residence, 2021
- Residential Landscape Architecture Design, Merit Award, Riverfront Transformation, 2020
- Residential Landscape Architecture Design, Honor Award, Wrought by Hand, 2019
- Residential Landscape Architecture Design, Merit Award, Village Sanctuary, 2019
- Residential Landscape Architecture Design, Honor Award, Hudson Valley Getaway, 2018
- Residential Landscape Architecture Design, Merit Award, Collaboration & Craft, 2018
Publications
- The Connecticut Design Guide 2024, The List, January 2024
- Cox, Michael. Language of Home. Monacelli Press, 2023
- Connecticut Cottages and Gardens, May 2023
- Westport Magazine, April 2023
- Greenwich Magazine, March 2023
- Luxe Magazine, June 2022
- Living Etc UK, April 2022
- Living Etc UK, February 2022
- Architectural Digest Pro, January 2022
- At Home FC, November 2021
- New York Times, The Fix, June 22, 2021
- At Home FC, May/June 2021
- Hive Magazine, Spring 2021
- Luxe Magazine NY, January/February 2021
- Architectural Digest Pro, January 2021
- Luxe Magazine NY, October 2020
- NY Cottages and Gardens, November 2017
- East Coast Home and Design, June 2012
- Landscape Architecture Magazine, February 2012
- Frieze, Charlotte. Private Paradise: Contemporary American Gardens. Monacelli Press 2011