The Green MLS Tool Kit is an effort to define fields that help home buyers using the Multiple Listings Service quickly find green homes, make it easy to fully promote the special features of a green home, and support apples-to-apples comparison when it is time to appraise a green home. The Green MLS Implementation Guide supplements the Green MLS Tool Kit by focusing on the technical details MLS staff or their software system vendors need to implement the green data entry fields.