Professional Landcare Network
PLANET, the Professional Landcare Network, is an international association serving lawn care professionals, exterior maintenance contractors, installation/design/ build professionals, and interiorscapers.
http://www.landcarenetwork.org

Community Associations Institute
Community Associations Institute (CAI) is a national organization dedicated to fostering vibrant, competent, harmonious community associations. For more than 30 years, CAI has been the leader in providing education and resources to the volunteer homeowners who govern community associations and the professionals who support them.
http://www.caionline.org

Oregon Landscape Contractors Association
OLCA is a not-for-profit statewide professional organization that advocates for the landscape industry on local, state and national issues affecting both the profession and the world we live in. OLCA functions through the active volunteer work of our membership.
http://www.oregonlandscape.org/

Building Owners & Managers Association
Portland BOMA is a professional trade association dedicated to furthering the common interest of its members in the commercial real estate industry.
http://www.bomaportland.org

Better Business Bureau
The Better Business Bureau is a private, not-for-profit organization that aids consumers and businesses by supplying reports on the reliability of companies and charities. The Bureau provides dispute resolution services and consumer education materials to the public, and promotes honest advertising and selling practices and self-regulation within the business community.
http://www.thebbb.org