Mark Schlag

Mark Schlag

Retail Brokerage | CCIM, CLS

Contact Information:



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

Boise MSA Top 10 Growth Nationwide

According to a recent Idaho Business Review article, the Bo

BoiseDev articles about Thornton Oliver Keller

Some of our brokerage team's recent transactions were featured in articles written by BoiseDev.  If you're looking for some good reading material, we'd recommend these!

Riverpointe Place Boise Idaho

The STIL, LLC leased 1,785 square feet of retail space in Riverpointe Place, located in Suite 111 at 3724 S. Eckert Road in Boise, Idaho.

My Featured Listings

Rite Aid - Pocatello - Main Photo
515 E. Benton Street
Pocatello, Idaho
Retail for Lease
Available: 12,144 SF
Rate: Contact Agent
Cole Village Shopping Center - Main Photo
3317-3485 N. Cole Road
Boise, Idaho
Retail for Lease
Available: 1,413 to 13,080 SF
Rate: Contact Agent
300 Orchard Street - Main Photo
300 N. Orchard Street
Boise, Idaho
Land for Sale
Available: 2.32 Acres
Price: $1,300,000.00