Green Street Real Estate Ventures is preparing a $600 million development near the historic Armory site in Midtown, setting the stage for one of the city’s most significant private investments. The company recently submitted a “zoning only” application with the city, an initial step that allows officials to review land use and overall scope before detailed plans are filed.

The proposed project, in partnership with THO Investments, led by developer Rod Thomas, is envisioned as a multi-phase destination designed to complement the ongoing revitalization of Midtown. While specifics have not yet been announced, the investment size points to a blend of entertainment venues, residential living, retail, and hospitality. Such a mix would extend the momentum of nearby districts that have seen major growth in recent years.

Positioned just west of the Armory building, the site has the potential to connect surrounding cultural, educational, and research corridors with new amenities for residents and visitors. The development is expected to move forward in stages, allowing infrastructure and vertical construction to align with market demand and community input.

If realized, the $600 million project would not only reshape the area but also reinforce St. Louis’ standing as a city attracting ambitious, mixed-use developments designed to spur activity, strengthen neighborhoods, and draw long-term investment.

Header image The Armory project adjacent to a $600 million development proposed by Green Street Real Estate Ventures. Image credit: Sophie Proe / St. Louis Public Radio