Mark Schlag

Mark Schlag

Retail Brokerage | CCIM, CLS


Mark Schlag has been a retail and investment specialist at Thornton Oliver Keller since 1993.  Primary areas of expertise include retail landlord and tenant representation, retail investment sales and development services, including site assemblage.

Mark started his career in commercial real estate while completing his degree at Seattle University.  Upon returning to Boise, Mark was recruited by the original founding partners of Thornton Oliver Keller as a retail specialist.  A reputation for superior customer service and an ability to creatively approach the objectives of his clients has earned Mark a distinguished reputation within the local industry.  

Mark has participated in numerous projects including the development, lease up and subsequent sale of the 71,000 square foot mixed-use One Front Street building; the acquisition and redevelopment of the 118,000 square foot Cole Village Shopping Center; and has increasingly developed notable national representation accounts including Chase Bank, Bank of America, Chipotle Mexican Grill, Firestone Tire, Duluth Trading Company, SleepTrain and multiple others.


Mark maintains membership within the following organizations: International Council of Shopping Centers (ICSC) where he has attained the certification of Certified Leasing Specialist; CCIM Institute as the former President of the Idaho Chapter of CCIM; and is a member of the Boise Metro Chamber of Commerce (transportation committee).


Mark graduated from Seattle University in 1993 Magna Cum Laude with a Bachelor of Arts in Business Administration in Finance and Economics.


Mark resides in Boise with his family.   An avid outdoorsman, Mark’s time away from the office is spent with family and friends fly-fishing, skiing, running, backpacking and pursuing all that the Idaho outdoors have to offer.

Recent Posts

Grocery store worker fills empty shelves

In the wake of the COVID-19 pandemic, Idaho retailers are feeling the impact personally.

TOK has identified some resources offered by the U.S.

The 11th & Idaho office building places its final beam, marking the completion of a significant phase of construction.

On March 17th Rafanelli & Nahas placed the final beam on the 11th & Idaho building, downtown Boise’s much anticipated 10-story office building, marking the completion of a significant phase of construction.

My Featured Listings

Block 44 - Main Photo
800-826 Idaho Street
Boise, Idaho
Retail For Lease
Available: 1,042 to 2,094 SF
Rate: $22.00/SF NNN
Hazelwood Marketplace - Main Photo
10785 W. Lake Hazel Road
Boise, Idaho
Retail For Lease
Available: 1,560 SF
Rate: $26.00/SF NNN
4925 Glenwood St - Main Photo
4925 N. Glenwood Street
Garden City, Idaho
Retail For Lease
Available: 1,000 to 7,500 SF
Rate: Contact Agent