Kendall O’Brien Landscape Architects has grown in the last two decades into a thriving design firm and earned a reputation for delivering distinctive, picture perfect quality site designs. Our successful design approach recognizes the unique complexities of each site and resolves conflicting issues between the site, the client and the reality. The KO design approach applies as effectively to large scale master plans as it does to intimate residential design projects.  Partners Patricia Kendall and Heather O’Brien produce creative and innovative design concepts for high end residential properties, estate gardens and urban open spaces. The firm’s signature classic style is readily adapted to meet the challenges and opportunities presented by each individual site. This functional, classic style is laid over a foundation of requirements generated by the client.
Developed in close and constant collaboration with our clients, these design concepts are the product of our ability to listen well and to share ideas that will ultimately result in a beautiful, well designed landscape. With a clearly defined objective and a shared vision, the company creates comfortable environments that combine both artistry and functionality. The end result is a highly organized attractive outdoor living space that upholds the high design standards of our team and fulfills the dreams and wishes of our clients.

Patricia K. Kendall, BSLA, ASLA, RLA

Patricia K Kendall is the founder of Kendall O'Brien Landscape Architects and holds a Landscape Architecture degree from Penn State University. After several years of working in large engineering and architecture firms, she has been on a mission to design beautiful, and useable, outdoor environments. Interpreting the style and desires of each client is Kendall's secret to years of successful design projects. From the first vision to the finish of the final detail, she keeps the focus of her work on the clients’ personal style to create individual living environments that are a comfort and inspiration to the people who enjoy them.

Heather O’Brien, ASLA, RLA

Heather O’Brien has more than twenty-five (25) years of experience in providing landscape architecture consultation and services to a wide variety of clients and businesses. Heather specializes in providing a full line of comprehensive, innovative and sustainable landscape solutions that are tailored to a client’s expressed needs, along with careful consideration of the site and architecture of the house and home. She is personally involved with all phases of her client’s project, including but not limited to on-going communications throughout the length of the project, detailed developmental design drawings, integrated project management and counseling, including working with a network of authorized contractors who work with the client for a satisfactory and finished landscape design – from inspiration to installation.

Heather is a 1992 graduate of Penn State University where she graduated with a BS from the School of Landscape Architecture. She is a registered Landscape Architect in the State of Pennsylvania and is currently a member of the Pittsburgh Botanical Garden and Pennsylvania Horticultural Society. She also served on the zoning hearing board of Ben Avon Heights.