Post Brothers | 9,452 followers on LinkedIn. Post Brothers is a nationally-recognized leader in development, innovation, and sustainability. | Post Brothers was founded in 2006 by Matthew and Michael Pestronk to exclusively focus on creating and operating infill, class-A, “best-in-class” apartment buildings at a superior cost basis. Post Brothers is a nationally-recognized leader in development, innovation, and sustainability. Since the company’s founding in Philadelphia in 2006 it has developed more than 30 properties and 4,000 apartments, which have all thrived due to a common theme: making a level of upscale state-of-the-art living accessible at a price point which and to people for whom it was not previously available.