JTOWER to Relocate Headquarters to Roppongi Central Tower in June 2026

JTOWER Inc. will relocate its headquarters in June 2026 to Sumitomo Realty & Development Roppongi Central Tower in Roppongi, Minato Ward, Tokyo.

The company operates an infrastructure sharing business that provides shared mobile base station facilities to telecommunications carriers. In addition to indoor and outdoor tower sharing, JTOWER has expanded its business scope to include local 5G and Wi-Fi solutions. The company has established a technology-led position in the market, having developed Japan’s first shared equipment compatible with the 5G Sub-6 band in 2020, followed by the completion of Japan’s first open RAN–compatible shared 5G radio unit in June 2025.

The new headquarters, Sumitomo Realty & Development Roppongi Central Tower, is a newly completed office building delivered in January 2025 and located a one-minute walk from Roppongi Station. The 21-story building offers a gross floor area of approximately 10,559 tsubo (approx. 375,700 sq. ft.), with typical floor plates of around 395 tsubo (approx. 14,050 sq. ft.). The building features a 3,000 mm ceiling height, seismic isolation structure, and business continuity planning (BCP) capabilities, including emergency power generation for up to 72 hours.

At the new office, JTOWER plans to establish a dedicated exhibition space focused on infrastructure-sharing equipment, where devices will be displayed in conditions close to actual operation. The facility is expected to be one of a kind in Japan and will be used for sales activities and technical briefings for clients.

Key Facts

• Relocating Company: JTOWER Inc.

• Relocation Timing: June 2026 (planned)

• Current Location: HULIC Aoyama Gaien Higashi-dori Building (2-2-3 Minami-Aoyama, Minato-ku, Tokyo)

• New Location: Sumitomo Realty & Development Roppongi Central Tower (7-15-9 Roppongi, Minato-ku, Tokyo)

• Property Overview

  • Completion: January 2025

  • Number of Floors: 21F / B0

  • Gross Floor Area: Approx. 10,559 tsubo (approx. 375,700 sq. ft.)

  • Typical Floor Plate: Approx. 395 tsubo (approx. 14,050 sq. ft.)

  • Ceiling Height: 3,000 mm

  • Structure: Seismic isolation structure (steel, reinforced concrete, and steel-reinforced concrete)

  • Nearest Station: Roppongi Station (Tokyo Metro Hibiya Line / Toei Oedo Line), 1-minute walk