Colleen Duggan

Colleen grew up in Arlington, Virginia and has a Master’s in Architecture from Georgia Tech. She comes to us from another design/build firm where she worked on residential renovations. Colleen enjoys working with clients to figure out preliminary design schemes during the initial stage of a project. She lives in Silver Spring and does DIY projects on her own house. In her spare time, she hikes with her 7-year-old pit mix Mable, goes antiquing and dines out with friends.

Anders Adelfang

Anders joined Landis in December 2020 as a team leader/senior designer. He has an architecture degree from Auburn University and worked as an architect before starting a design/build firm in Huntsville, Alabama that he ran for 16 years. He moved to Colorado where he worked for Melton Design/Build and then one other architecture firm. He and his family moved to the DC area and just purchased a house in the Woodridge neighborhood. Anders and his wife have four kids – two in college, and two younger children.

Dana Kaminsky

Dana’s business development background blended with her creative vision led her to Landis in 2017. Her primary focus is to serve as a liaison between the homeowner and the design team. She is passionate about making clients’ renovation goals a reality. Dana lives in Potomac with her husband and two children. She also enjoys cooking, playing tennis, biking, fashion, browsing décor, and traveling.

Ethan Landis

Ethan Landis has been passionate about our design/build company since starting it in 1990. He loves the business side and building the company, finding and hiring and motivating great employees, as well as working with customers to make their homes fabulous.
He previously sat on the District’s Construction Code Coordinating Board, helping the city establish green construction codes. He and his firm have received two Mayor’s Sustainability Awards for their leadership. He served two terms (9 years) on the Mayor’s Green Building Advisory Board that helps oversee DC’s Green Building Act. He is a member of the Rock Creek Conservancy board and enjoys hiking the trails in Rock Creek Park.
Ethan and his wife Jude, with their dog Duke, live in the Crestwood neighborhood of Northwest DC. He has two grown sons, one of whom is planning to join Landis. He and his wife love spending time at their “family farm” in central Vermont.