Finding your dream home takes time.

Applying for your loan shouldn't.

Welcome to Security National Bank of South Dakota's Online Mortgage Center.

We' re here to guide you through the mortgage loan process in a quick and easy way, so you can focus on what' s really important: buying, building or remodeling the home of your dreams.

Why Security National Bank?

We're convenient.


We optimized our loan approval process to save you time and effort. Just answer a few quick questions and be on your way to preapproval, so you can spend more time buying --   not applying.

We're experienced.


Our caring, supportive lenders have decades of experience helping customers just like you finance their homes. Rest assured, we' ll be with you every step of the way.

We're local.


You' re part of the community, and so are we. What does that mean? With us, you' re a name -- not a number --  and you' ll get your questions answered by a real, live person.

Crunch the Numbers.

It's no secret all of that home mortgage math can be daunting.
Here's an array of online calculators to help you see what you can afford:

Payment / Amortization Calculator

Calculate your monthly payment and see how the principal is paid over time.

Rent vs Own Calculator

Calculate the difference between renting and buying a home.

Annual Percentage Rate Calculator

Calculate the APR for fixed-rate or adjustable-rate loans.

Debt Consolidation Calculator

Determine if you can consolidate your debt by combining it with your home mortgage.

Prepayment Savings Calculator

Find out how soon you can pay off your mortgage by making a prepayment.

Early Payoff Calculator

Determine the additional monthly payment amount needed to pay off the loan sooner.

Refinance Break-Even Point Calculator

Find out how long it will take to "break-even" on a refinanced loan.

Our Locations

Wherever you are in Sioux Falls, stop by one of our branches and get the mortgage assistance you need:

Louise Avenue

6601 S. Louise Avenue

Sioux Falls, SD 57108

T (605) 977-9000


West 26th Street

4621 W. 26th Street

Sioux Falls, SD 57106

T (605) 323-0155


Dakota Dunes

325 Dakota Dunes Blvd

Dakota Dunes, SD 57049

T (605) 232-6060