St. Louis

Downtown Jolt, Coffeestamp Brewing Third Shop On Washington Avenue

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Published on May 21, 2026
Downtown Jolt, Coffeestamp Brewing Third Shop On Washington AvenueSource: Google Street View

Coffeestamp, the St. Louis micro-roastery turned coffee bar, is plugging in a third location on Washington Avenue in downtown St. Louis. The new corner shop at 1228 Washington Ave is expected to open late this summer, with brothers Patrick and Spencer Clapp adding the downtown outpost to their original South Jefferson cafe and their campus location.

In a piece for Sauce Magazine, reporter Riley Hansen notes that developers approached the Clapps about the space. Co-owner Patrick Clapp told the magazine, "We took the challenge, and we want to be part of that neighborhood and do our part to make it better." The report also points out that the Washington Avenue cafe will feature an exclusive downtown breakfast sandwich alongside Coffeestamp's usual offerings.

From Micro-Roastery To Three Shops

Coffeestamp began as an idea in 2016 and became a roastery in 2018, focusing on single-origin beans that are also sold by the bag for home brewing, according to Coffeestamp. The company operates its flagship cafe at 2511 S. Jefferson Ave., and Washington University Dining lists a Coffeestamp outpost in Hillman Hall on campus.

Downtown Location And The Rudman Building

The Washington Avenue cafe will sit in the historic Rudman On The Park building at 1228 Washington Ave, a mixed-use property with first-floor commercial space that listings describe as prime ground-floor retail. Listings on Crexi show the building's street-level spaces as well suited to cafes and small restaurants. Coverage of downtown retail points out that Washington Avenue has seen several new openings recently, and St. Louis Magazine has reported on nearby cafe activity as developers invest in the corridor.

What To Expect

The new downtown Coffeestamp will largely mirror the Fox Park shop's lineup - made-to-order coffee, tea, kombucha, empanadas, sandwiches and pastries - with a few specialty items created just for the Washington Avenue menu, as Sauce Magazine reports. The roastery also publishes detailed brewing instructions and sells whole beans for home customers on its website, and Coffeestamp emphasizes single-origin sourcing, including beans tied to a longstanding relationship with farmers in Honduras.

Downtown residents, office workers and conventioneers are set to gain another local caffeine stop as Washington Avenue continues to draw independent operators. Coffeestamp's Washington Avenue shop is expected to open late this summer, with a firm opening date still to come.