ENR Midwest has extended its Top Design Firms deadline to March 4, providing firms in Illinois, Indiana, Michigan, Missouri, Ohio and Wisconsin an additional week to submit forms for the annual listing, which ranks the region's largest architecture and engineering firms in accordance with their revenues for 2012.

The listing will be published in the June 3 edition of ENR Midwest.

In addition to highlighting the performance of individual firms, the listing provides a collective snapshot of design activity in the Midwest. It also serves as the basis for selecting ENR Midwest's Designer of the Year.

Firms are selected on the basis of their financial performance, as well as their execution of key projects in the region. Previous honorees include HDR Inc. and KJWW Engineering Consultants.

To submit a form, click on the Regionals Top Design Firms 2012 box on the right side of our home page – www.enr.com/midwest. – or simply click here.

And for a glance at the Top Design firms of 2011, click here.