Hi! I'm Bill Sandvig and I'm a Mortgage300 leader, loan officer, and one of the Co-founders serving in Charleston, SC. I'm here to provide expert mortgage advice and bring you home faster.

NMLS ID: 448829
Learn more about Bill Sandvig

Bill has been a member of the Charleston Community since 2002, moving here following graduation from the United States Naval Academy in Annapolis, MD. After serving the nation as a Nuclear Submarine Naval Officer, he ventured into the world of civilian Nuclear Power for a short season finally settling into the Mortgage Banking Industry. As a Market Leader Bill built the largest residential purchase mortgage branch in South Carolina, claiming #1 in purchase market share in just over 2 years.  He has been recognized in Mortgage Executive Magazine and the Scottsman Guide as one of the top Loan Officers in the nation.

The experience and lessons learned while serving as a leader in the mortgage industry culminate with the foundation of Mortgage300, which delivers on a vision to create transparency in an industry historically built on misconception.

Measuring success by the vested impact he can have on others, Bill sets out to pass on the lessons of other leaders who have vested in him, such as:

  1. The value of Faith and an active relationship with Christ
  2. The incredible power of Servant Leadership
  3. The lasting impact we all can have when serving and committing to others
  4. The strength of a transparent corporate culture and empowering people

With the establishment of Mortgage300, he is excited to be taking those lessons and serving the needs of hundreds of communities across the nation, and through service impact the lives of millions more.


Recent Posts

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Find the Perfect Loan

If there is a mortgage product that you need, Mortgage300 has it!
I need a loan above $453,100.
I'm looking for a short term loan.
I want the lowest interest rate available.
I don't want to worry about my interest rate going up.
I want to live in a rural area.
I am a military veteran or actively serving.
I don't have a lot of money for a down payment.

Clear Answers to Common Questions

From start to finish, our team will go above and beyond to ensure all your questions are answered.
What are the common fees through the mortgage process?
What is the difference between a Mortgage Broker & Mortgage Banker?
What is a Rate Lock or Lock In?
What is a Loan To Value Ratio (LTV)?
What are Discount Points (or Points)?
What is the difference between Interest Rate & APR?
What are the steps in the Mortgage Process?
What is a Truth-in-Lending Disclosure and why do I receive it?
What is Private Mortgage Insurance (PMI)?
How does an escrow account work?

Why I choose to work for
Mortgage 300

Mortgage300 is always on the forefront of new loan programs and has a focused investment into cutting edge technology to ensure a fast, efficient transactions that serve my clients better.
Our company’s revolutionary business structure means I am in control of the mortgage deal, from start to finish. My processing and underwriting departments are right on site and that gives us a unique advantage in getting loans closed quickly and efficiently.
I'm uniquely vested in your mortgage experience being a success, because when you work with a Mortgage300 partner you are truly working with the owner of the company.


In short, "I work for Mortgage300 because they empower me with authority, tools and an expert team to offer consistent, best in class service - and this brings my clients back again and again!"

Real People, Real Bill Sandvig Reviews

client testimonial
"Our realtor recommended Mortgage300 to us when getting our 3rd mortgage ever. We compared their rates with 2 other companies and went with the lowest rate. But the experience was why we referred all our friends. Our loan officer was one of the top professionals in the area, and we were never waiting to hear back from them about anything. It was actually Mortgage300 who were always ready and waiting on us for the next step, a very nice change from past experiences."

Kelly C.
experienced home buyer