Hotel: Operated by Seibu Prince Hotels Worldwide
Leisure facilities: Seibuen Yuenchi, Yokohama Hakkeijima Sea Paradise
Real Estate: DIAGATE Ikebukuro, Karuizawa Prince Shopping Plaza
App: Seibu-Sogo Official App
Others: Izu Hakone Railway, Seibu Lions

The company operates 12 railroad lines, travel and tourism, commercial facilities, and real estate businesses in Tokyo and Saitama Prefecture.
In 2017, Seibu Labo was established with the mission of creating new businesses based on free ideas, and from 2019, an open innovation program called "SWING" will be implemented, in which ideas that will be the source of new business creation are solicited from the public, and ideas are given shape while valuing the ideas of the proposers. SWING" open innovation program is underway.