Lewis’ career in real estate has included ownership of Am Prop Real Estate and a partnership in Lewis, Kirkeby real estate, later known as Coldwell Banker, Lewis, Kirkeby & Hall. Her first construction project was remodeling the building for Lewis & Kirkeby East.

In the early 1980s, Lewis was a member of Falcon Homes, which built about 200 houses in Box Elder, Rapid Valley and Black Hawk. Lewis and Mike O'Brien later started Valley Pride Homes in Trail Wood Village in Rapid Valley.

In addition to real estate and construction, Lewis has been involved in a number of other businesses over the years. In the late '80s, Lewis operated Sum Fun Tattoos at the' Sturgis motorcycle rally. Later in the 90s, she operated the Cat House in Deadwood and Keystone.

For the past two decades, Lewis and her various partners have been responsible for establishing several housing developments in the region, such as the Meadows in southeast Rapid City and Elk Creek Village in Piedmont, and have owned and operated several construction and development companies such as Legend Homes and Legacy Land Company.

Lewis and her youngest son, Chad Lewis. started Yellow Jersey Construction in 2002 and began building in Rapid City Piedmont as• well as a townhouse site in Deadwood. Their newest building venture will start this year and will be called the Frog Pond in Lead.

Lewis' current projects are Stoney Creek Townhouses, Yellow Jersey homes in various locations and Catron Crossing, a 125-acre development with Chad and her brother, Steve Shurtz, a builder in Gillette, Wyo.

Lewis has been an active member of the Black Hills Home Builders Association since the early '70s. During that time, she has served on the board of directors as. treasurer and twice as president. Lewis was also a SPIKE of the year in 2006.

She has been involved in various home builder projects such as the Garr House, Builders Boulevard, Barker's Ball and the Shared Visions Project on the Pine Ridge Indian Reservation with President Bill Clinton in 1997.