Mayor Martin J. Walsh today announced a 42 percent increase in the Linkage fees collected by large scale commercial developments over 100,000 square feet in Boston to support the creation of affordable housing and workforce development programs. The increased rate of $15.39 per square foot, of which $13.00 will be dedicated to affordable housing and $2.39 will be dedicated to workforce training, will be brought to the Boston Planning & Development Agency (BPDA) Board for approval on Thursday, February 11.