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ADDRESS

1800 S Summit, Suite 100 Sioux Falls, SD 57105

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About this location

Welcome to Keystone Mortgage in Sioux Falls! Opened in 1993, you can find us on the corner of 18th and Minnesota Avenue. If you’re looking for mortgage lenders in Sioux Falls, SD, stop in and meet our friendly and experienced loan officers.

At Keystone Mortgage, we strive to be an asset to our communities. Employees at this location support local causes such as the Food Banquet, Military Employer, National Guard Association, and American Region.

When you visit our Sioux Falls location, you can expect to receive superior customer service and the very best loan options available, along with superior knowledge of the loan industry. Keystone’s focus is to educate our customers on the latest financing options, allowing them to discover loan programs they never knew existed. All our loan officers, processing staff, and management are in Sioux Falls, conveniently located on the corner of 18th and Minnesota Ave.

Have questions about home loans or ready to apply for a new mortgage loan today? Give us a call or visit us today!


 

Meet our Team

Jamie Jacobsma

Jamie Jacobsma

18th St.

E-mail: jamie@keystoneassociates.biz

Phone: 605-330-6033

More Details

NMLS # 7025
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Jamie is the Branch Manager at Keystone Mortgage in Sioux Falls. She joined our team in 2016 and has 20 years’ experience in the field. Specializing in refinance, divorce, and tough credit loans, Jamie enjoys helping customers with homeownership.

His advice for prospective borrowers is to “Plan accordingly and don’t buy ‘too much’ house as you still need to live.”

A graduate of South Dakota State University, Jamie lives in Brookings and enjoys hunting, fishing, golf, and spending time with family in her spare time.

Mark Wiesner

Mark Wiesner

18th St.

E-mail: mark@keystoneassociates.biz

Phone: 605-330-6033

More Details

NMLS # 7024
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Mark is a Senior Loan Officer at Keystone Mortgage in Sioux Falls, with 20 years’ experience in the field. He specializes in VA loans, FHA, Rural Development, Conventional, and a variety of “unique situations.” What Mark finds most rewarding about being a lender is helping young families obtain their first home and assisting customers with planning their home purchase after they have been denied by other lenders.

Mark’s advice for prospective homebuyers is to “Work with a Loan Officer who has experience, local presence, and is easy to communicate with.”

Mark lives in Garretson with his family and enjoys four wheeling, sailing, and camping in his free time. He is also a member of the National Guard Association and American Legion, and volunteers at local organizations such as the Rocky Mountain Elk Foundation, Banquet Food Mission, National Guard Association, American Legion, and church board.