Birch Mullins was a long-time principal of Baur Properties, which developed some of the first industrial and office parks in St. Louis County.
Birch Mullins spoke with Built St. Louis on August 25, 2025.
Page Industrial. Although lots continued to be filled into the 1970s, 17 buildings were constructed in just the four years 1959-62

Mason Ridge Office Center, 660 Mason Ridge Center Drive (the ‘Citicorp Building’) and 12955 North Forty Drive – 1980 and 1983


Twin Oaks, 555 N. New Ballas Road – 1980

The Quadrangle Building, 625, 635 & 655 Maryville Centre Drive – 1986 front & 1994 rear


530, 540 & 550 Maryville Centre Drive – 1988-89 and 520 Maryville Centre Drive – 1999, with their shared parking structure
















