Union-Tec Welcomes 'Mountain House Architects', a Design Firm Specializing in Architecture, Interiors, Furniture, and Products, to its Group

Union-Tec Co., Ltd. (Headquarters: Shibuya-ku, Tokyo; President: Yusuke Okawa), which provides one-stop interior design, planning, and construction for offices, commercial spaces, and residences under the mission 'Build a new standard.', announces that Mountain House Architects Inc. (Headquarters: Meguro-ku, Tokyo; Representative Director: Akira Yamaya) joined the group on March 27, 2026. Mountain House Architects is highly regarded for its unique expertise in architecture, interior, display, furniture, and product design, having handled projects for numerous national clients including major character shops, Dentsu, Hakuhodo, and JAL. By joining the Union-Tec group, the company will build a stronger framework to serve national clients. Conversely, Mountain House Architects will be able to handle projects previously declined due to resource constraints and provide one-stop services including construction, thereby meeting the expectations of more customers. Both companies aim for further business expansion by leveraging their assets, trust, and track records.