Billed as the largest green design and building expo in Southern California for both professionals and the public, the Eighth Annual AltBuild Expo and Conference will take place from 10 a.m. to 5 p.m. Friday and Saturday, May 6 and 7 at the Santa Monica Civic Auditorium, 1855 Main St.

The expo, presented by the city of Santa Monica, features over 150 exhibitors in green building and design materials; energy efficiency techniques and technologies; alternative energy; water conservation and management; and environmental plumbing, as well as municipal and state agencies and nonprofit organizations.

The event also includes more than 40 speakers in various sustainable and alternative building practices.

Event organizers say AltBuild provides an opportunity for professionals – designers, architects, and the building trades – and the public alike to explore the latest in green building, design and operational practices. Among the activities are public demonstrations, accredited educational programming for professionals, and small group discussions led by area green building experts.

In addition, artist Cassandra Tondro says she will be the only artist exhibiting at the expo with contemporary abstract paintings created with salvaged and eco-friendly materials. Tondro’s paintings are created using discarded house paint, which she obtains from the Santa Monica Household Hazardous Waste Center and reject shelves at home improvement stores.

Speakers will conduct on-site seminars and discussions groups for the architect, building and design trades on May 6. The May 7 speakers will host open workshops and discussion groupson sustainable design, green residential remodeling, as well as discuss new ideas, laws and issues about what it means to build green.

“With such high quality presenters and exhibitors, AltBuild continues to be an incredible resource for the region,” said Brenden McEneaney, green building program advisor for the Office of Sustainability and the Environment.

“The city of Santa Monica has a tradition of pursuing environmental excellence and an educational event like AltBuild continues that pursuit. There’s no better place to learn from the experts and make the connections you need for your next project.”

The expo is free and open to the public and features free bike valet parking. Vehicle parking is $9.

Information, (310) 390-2930, or