Mason Mac Gives Back. To our clients, to worthwhile causes, and especially to our local communities. When you have a Mason-McDuffie Mortgage branch in your community, you have a team of advocates anxious to help do more than just provide the best in mortgage financing.

Our team has a proud history of providing time, money, and support to some great local organizations and causes, and stepping up when the need arises. We strive to help when and wherever the opportunity prevents itself, because that’s what a good neighbor does.



Mason-McDuffie Mortgage Corporation

2430 Camino Ramon
Suite 300
San Ramon CA. 94583

Phone: 925-242-4400
Fax: 866-743-0260
Toll-Free: 877-ASK-MMMC (877-275-6662)


Licensed by the Department of Business Oversight
under the California Residential Mortgage Lending Act. NMLS# 1141
NMLS Consumer Access Site