Cook County Class 7b

The Class 7b classification is designed to encourage commercial development throughout Cook County by offering a real estate incentive for the development of new commercial facilities, the rehabilitation of existing commercial structures, and the commercial reutilization of abandoned buildings on properties that have been designated as blighted by the community. Additionally the project costs need to exceed $2 million. 


The goal of Class 7b is to attract new business, stimulate expansion and retention of existing business and increase employment opportunities.

How It Works

  • Under the incentive provided by Class 7b, qualifying commercial real estate would be eligible for a reduced assessment from the date that new construction or substantial rehabilitation is completed and initially assessed or, in the case of abandoned property from the date of substantial re-occupancy.
  • Properties receiving Class 7b will be assessed at 10% of market value for the first 10 years, 15% in the 11th year and 20% in the 12th year. This constitutes a substantial reduction in the level of assessment and results in significant tax savings. In the absence of this incentive, industrial real estate would normally be assessed at 25% of its market value.

Eligible Properties

Real estate used primarily for commercial purposes", which is defined as:
"Any real estate used primarily for buying and selling of goods and services, or for otherwise providing goods and services, including any real estate used for hotel and motel purposes."

New construction, substantial rehabilitation or reutilization of abandoned buildings
Location anywhere in Cook County on properties that have been designated as "blighted" within the community. 


Assessment levels reduced from the commercial rate of 25% for 12 years:
  • 10% for 10 years
  • 15% in Year 11
  • 20% in Year 12
  • Return to 25% in Year 13


  • Application to the Assessor and municipal resolution must be filed before construction of new buildings, or the substantial rehabilitation or reoccupancy of existing buildings begins.
  • Municipal resolution in support of application is required.

More Information


Contact Us

  1. JCM Photo

    John C. Melaniphy III
    Director Economic Development


    Ph: 847-588-8074
    Fx: 847-588-8050

    1000 Civic Center Drive
    Niles, IL 60714