JLL awarded 1-million-square-foot portfolio in Uptown Houston

HOUSTON, Oct. 29, 2025 – JLL today announced it has been selected by Tanglewood Property Group (Tanglewood) to handle leasing for its office portfolio in the Galleria-Uptown district. Totaling 1,005,595 square feet across three buildings, the portfolio includes 5599 San Felipe, 5444 Westheimer and 2801 Post Oak. JLL Executive Vice Presidents Chrissy Wilson and Paul Frazier will market and lease all three buildings on behalf of Tanglewood.

Situated within the San Felipe micromarket and spanning 473,645 square feet, 5599 San Felipe is a 21-story Class-A office tower featuring panoramic downtown views and an abundant amenity package, including an onsite deli, and best-in-class fitness center. Nearby, 5444 Westheimer is a 392,226-square-foot, Class-A property standing 21 stories tall and located in the heart of Houston’s highly sought-after Uptown submarket. 2801 Post Oak – best known for being the site of Westlake Corporation’s headquarters – is a 129,032-square-foot, Class-B asset featuring a recently renovated exterior and upgraded landscaping. Additional upgrades to the building’s interiors are planned for 2026.

Westlake Corporation plans to relocate its headquarters to 5444 Westheimer in Q3 2026.

“Houston’s Galleria/Uptown submarket is one of the most competitive corridors in the city, and this portfolio encompasses some of its strongest offerings,” said JLL’s Wilson. “5444 Westheimer and 5599 San Felipe are well-leased, stabilized assets, and 2801 Post Oak will soon present a unique opportunity for a corporate user looking for a headquarters-quality space with an unbeatable location. We’re pleased to continue our work with a reputable owner like Tanglewood and eager to build on existing success within this portfolio.”

Located within minutes of each other, the three office buildings are situated within a highly walkable area near dining, retail, and entertainment options within The Galleria district. Nearby upscale and casual dining options include The Capital Grille, Truluck’s, P.F. Changs, and Moxies Houston, among others. Each building provides premier connectivity to the rest of the metro area with proximity to the 610 Loop, Highway 59, and I-10, as well as local transit services.

“As longtime owners and onsite managers for this portfolio, we take pride in the quality of each asset and are committed to delivering top-of-the-line service for current and prospective tenants,” said Henry Hagendorf, President of Tanglewood Property Group. “JLL applies the same principles to client solutions and has a keen knowledge of the market, making it the clear choice to take over leasing efforts at these three locations.”

According to JLL’s Q3 2025 Houston Office Market Dynamics report, the market experienced a decrease in vacancy, hitting the lowest rate since Q4 2022. Notably, West Houston dominated leasing activity and Tier 1 assets posted a record-low vacancy of 10.3%, further evidencing extremely high demand for recently updated properties similar to the Galleria-Uptown Tanglewood portfolio.