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Your Financial Security Begins at Home

Whether you’re buying your first home, your tenth home, or considering a refinance, Mason-McDuffie Mortgage is here to make it easy. How do we do it? With award winning customer service, the latest in technology and customer security, and a sales team full of experienced professionals.


At MasonMac, you’re guaranteed to work with an experienced loan officer and support staff. No call centers, no 800 numbers, no robotic phone systems, no barriers between your loan officer and our executive team, and an operations staff working with one goal in mind – to ensure the best mortgage process for each and every customer.


With branches from Hawaii to the East Coast, Mason-McDuffie offers mortgage options in many communities for many types of buyers, and we strive to participate in the communities where we work. Small enough to care, and big enough to deliver, Mason Mac is your best option for mortgage financing, and we welcome the opportunity to help you.


Apply Online For Your Home Loan

We'll Help You Every Step Of The Way

Start the loan process by answering simple questions along a guided path. You'll be able to determine how much home you can afford, know what your monthly payment is, and become a pre-approved buyer.

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We specialize in the following Mortgage Loans:


NonQM Loans

FHA Loans

USDA Loans

Jumbo Loans


VA Loans


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Award Winning Mortgage Technology



With our digital mortgage experience you can apply for a home loan on the go. A few advantages of Mason-McDuffie's mobile application system are ease of use, secure digital document upload, and answers to your questions at your fingertips. The home loan process has never been easier to manage on the go.

Are You Ready For Your Dream Career

When was the last time you assessed your company's support? Do they give you what you need in order to grow your business even through challenging markets? Are you at the best place to maximize your success long term?

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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