Our Company

Our Mission

Our mission is to promote sustainable urban landscaping to provide a healthy environment for future generations. Our environmental designs integrate the beauty and harmony of nature into our lives to rediscover a healthier way of living. At AY Sustainable Landscape Design, we understand the synergistic relationship between beauty, sustainability, and health. These aren’t conflicting elements that need to be balanced, but rather principals that can work in harmony to create a sustainable landscape that inspires and refreshes our soul and recharges our life energy.

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Design Philosophy

Our environmental designs integrate the beauty and harmony of nature into sustainable urban landscapes.

Coming home to a space that works well for you can truly enhance your outlook on life. The first step in our design process is to understand your needs and the elements you want for your garden. Whether you have a small courtyard or a large estate, AY Sustainable Landscape Design can help create your beautiful and practical garden.

Your landscape design will be a reflection of who you are and will include your building style, your garden’s function, and the relationships between your outdoor spaces, as well as the effects of color, shade, pattern, texture, and light.

Company History

Guillermo Yanes has been designing beautiful gardens for the last 20 years. In 2004, Guillermo and Lisa started AY Sustainable Landscape Design in order to promote their ideal of a sustainable urban environment at the lot level - in everyday life. The company was formed in Portland, Oregon, and relocated to California in 2006. Our clients are located in Portland, Los Angeles, and the San Francisco Bay area.

Our project experience includes many fabulous landscape designs that incorporate water conservation principles, improved drainage design, runoff storage for irrigation, the use of amended soils to promote healthy gardens, and the use of native and/or climate-appropriate plant palettes.

Active Memberships

  • RESCAPE CALIFORNIA
  • AMERICAN SOCIETY OF LANDSCAPE ARCHITECTS