If you are an owner of a cooperative property, please complete the following steps. Link to obtain further information about the various exemptions that are offered, the documents and filing process required for each exemption to be claimed.Be ready to give the following information. To obtain an ITIN, you must complete IRS Form W-7, IRS Application for Individual Taxpayer Identification Number. NOTE: Tax buyers applying for a refund must provide the original validated receipt and letter of deletion from the County Clerk's Office. Note: You may be eligible to file Form 1023-EZ, a streamlined version of the application for recognition of tax exemption under Section 501(c)(3). ☑ Cook County Class 8 Post Construction Application. ☑ A sample request letter to the City of Blue Island for a resolution of support. But even today, what I wrote in that cover letter back in the fall is just as true. Sample Letter to Request Penalty Waiver for Reasonable Cause.