In 1975, SJ Development Corp(s JD) purchased the run-down YMCA building at Sands Street, Brooklyn from the NYC, as part of the J-20 Tax Abatement program. s JD hired the construction company, and was able to convert it to 110 unit cooperative apartments. This author worked as a sales manager, training several local sales people. The end result: all l 10 units were sold. The project was completed in less than three years, generating a net profit of $2.4 million. This type of real-life case got students full attention.