Cassia Residences Rama 9 Bangkok

Cassia Residences Rama 9 Bangkok condominium in Huai Khwang, Bangkok is a branded residence inside the mixed-use Landmark at MRTA Station development (also known as Siamese Rama 9) on Rama 9 Road. The developer is Siamese Asset PCL; Cassia is a Banyan Group brand that lends its name and hotel-style services to the residences. The Cassia units are in Siamese Tower, a 38-storey building which, according to the developer, contains 1,155 units including shops and offices on the lower floors.

Completion was phased and is dated differently by source: listing portals give years from 2022 to 2024, while the developer's progress page, updated on 1 May 2026, showed the tower as essentially finished, so check the handover status of the particular unit. Condos for sale in Cassia Residences Rama 9 Bangkok can be found on the resale market.

Location

The address is Rama 9 Road at Soi 11, in the Bang Kapi subdistrict of Huai Khwang, part of the Rama 9–Ratchada corridor often called Bangkok's new business district. Piyavate Hospital is about 430 m away in a straight line, Bangkok Hospital roughly 600 m and Praram 9 Hospital about 1.4 km. The RCA entertainment strip is around 1 km away, and the Central Rama 9 mall with Phra Ram 9 MRT station (Blue Line) is about 2 km to the west. An MRT Orange Line station named MRTA is being built on Rama 9 Road roughly 600 m from the tower, but the line was not yet in service at the time of writing.

Facilities

• sky swimming pool, sky garden and a sky bar with restaurant on level 37;
• fitness centre, steam room, library and co-working space on level 22;
• sky gardens on levels 20 and 24;
• sauna and a children's play area;
• shops on levels 1–3 and office units on levels 4–5;
• lobby with reception;
• car park with an automated parking system (898 spaces across the development);
• 24-hour security, CCTV and key-card access.

Apartments

The tower offers one-, two- and three-bedroom residences. Its signature feature is the loft layout: a living room with a high ceiling and a mezzanine level reached by an internal staircase. Published sizes differ between sources; the More Property catalogue lists units from 27.5 to 86 sq m. Residents can use the Cassia services, including a concierge, residence management and room service, and a Cassia-branded hotel is part of the same complex.

Who it suits

The project suits people who work in the Rama 9–Ratchada business district or want a serviced city base in Bangkok, with shops, offices and several major hospitals close at hand. The loft format appeals to singles and couples, the larger units to small families, and branded management is convenient for owners who let their home while away. As a general rule, up to 49 % of the floor area in a Thai condominium can be registered in foreign freehold ownership (the foreign quota), while the rest falls under the Thai quota or is held through a company.

More Property can send you the current listings in Cassia Residences Rama 9 Bangkok and arrange a viewing.