This document provides 30 simple and cost-effective options to green an existing home. It begins by outlining prerequisites for greening a home such as understanding procedures, labels, rebates, and contractors. It then lists and describes 30 specific green home options categorized by cost, from very cheap to very expensive. The options address topics like landscaping, energy and water efficiency, indoor air quality, and use of sustainable materials. For each option, it notes associated costs and which green elements it impacts.