Third Walnut Creek Mutual is a Homeowners Association in the Rossmoor Senior Adult Community of Walnut Creek, California, U.S.A.
“Where People Come First”
Welcome to Third Walnut Creek Mutual (TWCM). Anyone who buys a home in Rossmoor lives in a "mutual", which would more commonly be called a subdivision.
There are 17 mutuals in Rossmoor; each one is served by a homeowners association. Each mutual is either a condominium or a cooperative, with the exception of the one planned unit development of single family homes. The mutual you have chosen has 1676 condominiums and our mutual was the first to form a homeowners association. Click here to view photos of our Mutual.
Rossmoor is totally built-out, meaning there will be no more building in this beautiful Valley. We have 6766 homes and approximately 9000 residents, about 2500 of which are in Third Walnut Creek Mutual.
Third Mutual is spread across twelve governing districts which are made up of 24 groups of homes known as "Projects". Each of the 24 projects has its own budget and is responsible for maintaining its own buildings and grounds. Each project elects a director who serves on the TWCM Board of Directors. Officers are elected by the Board members.
The mission of Third Walnut Creek Mutual is to serve the needs of its members and to maintain open communications and transparency of governance. All meetings of the Board of Directors and its Committees are open and publicized, and members of TWCM are welcome to attend.
The members of the Board of Directors work hard to be the best and most responsible homeowners association possible. We invite current and prospective members to explore this website and contact us with any questions.
Our phone number is 925-988-7718. Our email is twcm@rossmoor.com.













