Seattle's medical marijuana dispensaries are scrambling after receiving a 14-day notice from the state Liquor and Cannabis Board.

The CPC in Georgetown has served thousands of patients since 2010. It works with hospitals, specializing in hard-to-find treatments for chronic disease, cancer, seizures and PTSD.

"We were always going to do this stuff anyways," founder Jeremy Kaufman said while pointing to new security cameras.

Kaufman is making a lot of changes to his building, adding new security cameras, constructing new walls, removing doorways, and clearing out his basement filled with cannabis plants. It's all part of applying for a new marijuana retail license, required by legislation that's combining medical and recreational pot under one regulatory system.

The original deadline gave shop owners until this summer to comply with license application requirements.

"We were supposed to have until July 1, 2016," Kaufman said. "Then this letter came out last week. It's like, 'Get licensed within 14-days or get...