HRSS CPAs Signs 19,569-Square-Foot Full-Floor Lease at Houston's Millennium Tower, Represented by Stream Realty Partners

HOUSTON — HRSS CPAs, a Houston-based accounting firm with a 40-year history, has signed a long-term lease for a full floor at Millennium Tower, a Class A office property at 10375 Richmond Avenue in Houston's Westchase Business District. The firm will occupy approximately 19,569 square feet and is scheduled to relocate in the fourth quarter of 2026.

Stream Realty Partners represented HRSS CPAs in the transaction. JP Hutcheson of Cushman & Wakefield represented the landlord, Millennium Tower LLC. Financial terms of the lease were not disclosed by the parties.

Deal Details: A Full-Floor Relocation to Westchase

HRSS CPAs will relocate from its current offices at 6671 Southwest Freeway to Millennium Tower, moving from the Southwest Freeway corridor to the Westchase Business District, situated at the intersection of Richmond Avenue and Beltway 8. The approximately 19,569-square-foot footprint aligns with the building's typical floor plate of roughly 19,000 square feet, constituting a full floor within the 21-story, 362,849-square-foot tower.

Millennium Tower, built in 1982, is a Class A high-rise offering a renovated lobby and common areas, an executive conference center, a tenant lounge, a fitness center, covered parking, 24/7 security, and on-site property management. The building is currently approximately 46.2% leased, with a weighted average lease term of 5.1 years.

Stream Realty Partners Managing Director & Vice Chairman Lucian Bukowski and Senior Associate Kylee Rocher Antweil led the tenant representation for HRSS CPAs.

What the Parties Are Saying

"HRSS's move to Millennium Tower is an important milestone as our firm continues to grow and invest in the future," said Sabeen Pirzada, Managing Partner at HRSS. "This relocation reflects our commitment to our people, encourages greater collaboration, and supports our ongoing expansion while helping us deliver outstanding service to our clients."

"HRSS approached this search with a clear vision for an improved workplace that also satisfied their financial parameters," said Bukowski. "We found a furnished floor at Millennium Tower that offered the right combination of location, accessibility, amenities, and quality to support those goals for the long term, all within an acceptable economic model. We're proud to have helped HRSS identify a space that aligns with where the firm is today and where it is headed."

Market Context: Professional Services Tenants Trading Up in a High-Vacancy Market

The transaction reflects a pattern visible across Houston's office market, where professional-services tenants are leveraging elevated vacancy rates to secure higher-quality, furnished space while meeting defined cost parameters. Millennium Tower's current occupancy of roughly 46% has left the building with substantial available inventory, including multiple full-floor opportunities. A Cushman & Wakefield leasing listing for the property shows approximately 245,931 square feet of available space within the building.

For HRSS CPAs, the move from the Southwest Freeway corridor to Westchase places the firm in a submarket situated between Houston's Energy Corridor and Galleria business nodes. Bukowski's reference to a "furnished floor" signals that the availability of move-in-ready space was a factor in the site selection.

About the Firms

Stream Realty Partners is a national commercial real estate firm headquartered in Dallas with operations across core U.S. markets. The firm offers leasing, investment, development, property management, capital markets, and construction services, among others. Since its founding in 1996, Stream has grown to more than 1,550 professionals and reports annual transaction volume exceeding $11.5 billion across office, industrial, retail, healthcare, land, and data center property types.

Cushman & Wakefield is a global commercial real estate services firm. Millennium Tower LLC is the ownership entity for the Westchase office tower.

HRSS CPAs is a Houston-based accounting firm. The firm's new address at Millennium Tower will take effect upon its planned Q4 2026 move.

Sources: Stream Realty Partners press release, August 26, 2026