Professional Practice Networks

Sustainable Design and Development

ASLA's Sustainable Design and Development Professional Practice Network (SDD PPN) is a group committed to ecology-based planning and design and creating landscapes that balance the needs of man and the environment while benefiting both.

Our goal is to collectively advance sustainable design as it relates to landscape architecture and related fields. In this task, we seek not only to advance the theory of sustainable design, but also to find ways to qualify and quantify the sustainable nature of design choices in landscape architecture and planning. We invite you to join and grow with us.


The main objective of the SDD PPN is to collect, advance, and disseminate information on sustainable design practice and theory within the field of landscape architecture and affiliated fields. In this realm, we seek to establish and maintain alliances with ASLA National, USGBC, AIA, ULI, APA, and other organizations with a similar focus.

We plan to research and make available references and documents related to our cause and strive to have a strong presence at both the local and national levels through our web page, The Field, conferences, and publications.

The SDD PPN’s secondary role and an initial impetus is supporting the development and implementation of the Sustainable SITES Initiative® (SITES®) site-based rating system. The SITES v2 Rating System is a set of comprehensive, voluntary guidelines and rating system that inform and asses the sustainable design, construction, and maintenance of landscapes. Landscape architects, designers, engineers, architects, developers, policy-makers, and others use these tools to make more sustainable land design and development decisions. This initiative was originally developed through a collaborative, interdisciplinary effort of the American Society of Landscape Architects (ASLA) Fund, The Lady Bird Johnson Wildflower Center at The University of Texas at Austin, and the United States Botanic Garden. After this initial collaboration, the rating system was turned over to Green Business Certification Inc., which now produces and owns exclusive rights to the SITES Rating System, its publications, and trademarks. As a PPN, we support the Initiative through local implementation and education, and professional outreach, and speaking engagements.

To join the Sustainable Design and Development PPN, please complete this form or contact ASLA Member Services at 888-999-ASLA or


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