Sansiri (55% stake) and Japan's Nomura Real Estate (45% stake) have launched a 4.5 billion baht joint venture to develop The Monument Sathon, a 29-storey luxury condominium in Bangkok's Sathorn—a rare high-end freehold land plot targeting ultra-high-net-worth individuals. The project combines Japanese craftsmanship standards and heritage-conscious design; it marks Nomura's expansion into Thailand's premium real estate and reinforces Sansiri's market dominance in the luxury segment.