Now through May 18: Philharmonic House of Design, tour new house with interiors and outdoor rooms designed by the American Society of Interior Designers, Orange County, open Tuesdays through Sundays, $30 to $35
25-26: Alternative Building Materials & Design Expo, free admission, Santa Monica Civic Auditorium, 10 a.m. to 5 p.m.
25-27: Home Remodeling & Decorating Show, L.A. Convention Center, Los Angeles
26: California Color: Gardening with Native Annuals, Perennials and Bulbs, class with Barbara Eisenstein, Theodore Payne Foundation for Wildflowers and Native Plants, Sun Valley, $40, 10 a.m. to noon
26: Fourth Annual Green Gardens Tour, theme: "Gardening with Intent: Water Management," to benefit the Virginia Avenue Project, a not-for-profit arts organization for kids, 10 a.m. to 4 p.m.
26: E-Waste Roundup to recycle computers, monitors, printers, stereos, TVs, cellphones and other electronic devices (no furniture, hazardous waste or kitchen appliances accepted), Toyota Way, Lot J, between Van Ness and Western avenues, Torrance, 9 a.m. to 3 p.m.
26: Green Building Rating Systems, panel compares three systems: LEED (U.S. Green Building Council), GreenPointRated (Build It Green) and California Green Builder, free, part of Alternative Building Materials & Design Expo, Santa Monica Civic Auditorium, 4:30 p.m.
27: Green Building Tours, hosted by the city of Santa Monica, in conjunction with the Alternative Building Materials & Design Expo
27: Castles to Cottages, self-guided tour of five gardens to benefit Capistrano Animal Rescue Effort, $20, 11 a.m. to 4 p.m.
Daily through June 30: Getty Villa Architecture and Gardens Tour, Malibu, free, reservations required, 11:30 a.m., 1:30 and 3:30 p.m.
2-4: Home Remodeling & Decorating Show, Orange County Fairgrounds, Costa Mesa
3: 14th annual Venice Garden and Home Tour, Venice east of Lincoln Boulevard
3: Castles of Carlsbad Spring Home Tour, luncheon optional
3-4: Solar 2008, conference and expo, open-to-the public events include workshops, tours and exhibit hall, $5, Town and Country Resort & Convention Center, San Diego
4: Spring Home Tour: Views from the Top, tours of contemporary hillside homes, sponsored by American Institute of Architects, Los Angeles chapter, $75, 11 a.m. to 4 p.m.