One of the most critical provisions in any contract for professional design services relates to the standard of care under which the design professional will be required to render its services. In the absence of contract language to the contrary, a design professional will be held to a common law standard of care commensurate with that of other professionals providing the same services to a geographically similar community. However, on a green building project, an owner may seek to retain a design professional specifically because of its sustainable design expertise. Accordingly, it may attempt to hold the design professional to a higher standard of care than that which prevails in the industry. This may be problematic for both sides for a number of reasons. Professional liability insurance policies provide insurance for legal liability that arises out of negligent professional acts, errors, or omissions. However, if not properly vetted, standard of care provisions have the potential to trigger standard exclusions to such policies. This article suggests two such exclusions and strategies for owners and design professionals to consider as they draft and negotiate construction agreements for green building projects.