Mark Schlag

Mark Schlag

Retail Brokerage | CCIM, CLS

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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 AutoZone, Bank of America, Chipotle Mexican Grill, Key Bank, SleepTrain and multiple others.

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


Mr. Schlag maintains membership within the following organizations: International Council of Shopping Centers (ICSC) where he has attained the certification of Certified Leasing Specialist (CLS); 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 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

Scandinavian Designs Boise Idaho

Furniture store growth across the Treasure Valley has been a defining characteristic of 2018's retail market.

1549 N Milwaukee St Boise Idaho

Four Corners Computers leased 1,984 square feet of retail space in the Fairview/Milwaukee Plaza located at 1549 N. Milwaukee St. in Boise, Idaho. Four Corners Computers provides sales and service of computers, tablets and mobile devices.

Boise Idaho growth

We recommend reading three recent articles in the Idaho Business Review which detail interesting market movement in commercial real estate and also happen to involve several members of our brokerag

My Featured Listings

Lake Hazel Village Pad - Main Photo
10426 W. Shelborne Drive
Boise, Idaho
Land for Lease
Available: 0.89 Acres
Rate: Contact Agent
8574 Fairview Avenue - Main Photo
8574 W. Fairview Avenue
Boise, Idaho
Land for Sale
Available: 1.72665 Acres
Price: $1,150,000.00
Ustick Marketplace Lot - Main Photo
3400 N. Eagle Road
Meridian, Idaho
Land for Sale
Available: 4.78 Acres
Price: $2,082,200.00