Centene Centre expansion reshaping Clayton's commercial core with $770 million mixed-use plan

Clayton's commercial real estate sector is undergoing a major transformation as the $770 million Centene Centre expansion moves through the planning stages, promising to add significant office capacity alongside new residential and retail components in the heart of downtown.

The project, which is expected to create 2,000 jobs, includes plans for new office space, ground-level retail, residential living and a civic center featuring an auditorium [4]. It comes at a time when Clayton has emerged as the St. Louis region's strongest office submarket, posting a 10.7% vacancy rate in the third quarter of 2025 stoked by high leasing volumes and new construction [1].

Development momentum builds

The Centene Centre expansion is part of a broader wave of investment that has reshaped Clayton's commercial landscape. In November 2024, Hoffmann Commercial Real Estate completed its acquisition of the 600,000-square-foot Pierre Laclede Center in downtown Clayton [2]. That transaction underscored investor confidence in the submarket even as many central business districts across the country continue to grapple with elevated vacancy rates.

Development activity in Clayton is concentrated largely on office-to-residential adaptive reuse projects and institutional expansions, with no traditional manufacturing or large-scale warehouse projects in the pipeline [3]. That focus reflects the city's identity as a professional services and headquarters hub, where employers and developers see value in converting underutilized commercial space into housing and mixed-use environments.

Former 7-UP site eyed for apartments

Another significant project taking shape is the redevelopment of the former 7-UP headquarters property. A real estate development company purchased the site for $3.8 million and has submitted plans for an 11-story residential building containing 300 apartments [5]. The proposal is pending city approvals and would add to the growing inventory of multifamily housing in Clayton, which city officials say is needed to support the expanding daytime workforce and attract new residents.

The 7-UP site redevelopment is emblematic of the adaptive reuse trend that is defining Clayton's current development cycle. Rather than demolish existing structures, developers are retrofitting older office buildings for residential use, a strategy that has gained traction as businesses downsize their footprints and demand for urban living space climbs.

Clayton's ability to attract large-scale private investment in both commercial and residential projects positions it as a regional outlier at a time when many suburban office markets are struggling to fill space. With the Centene Centre expansion, the Pierre Laclede Center acquisition and the 7-UP site redevelopment all moving forward, the city's commercial core is on track to gain hundreds of thousands of square feet of new mixed-use space over the next several years.

This article is general information only and is not personal financial or investment advice. Consider your own circumstances and seek licensed professional advice before making financial decisions.