Bangkok
, Asok-Rama 9
, Thailand
The Base Urban Rama 9
Complex Characteristics
Residential Complex Description
The Base Urban Rama 9 by Sansiri sits on Rama 9 Road, in Bangkok's new business district (New CBD), between Central Rama 9 and Praram 9 Hospital. The building is complete, with the year of completion 2025, and apartments are handed over immediately after payment. The tower has 29 floors and 311 apartments, 228 of them one-bedroom.
1 tower, 29 floors, 311 apartments
Apartments from 27 to 58 m²: one-bedroom units, high-ceiling lofts and two-bedroom layouts
169 parking spaces, including 2 with electric vehicle charging points
Freehold for foreign buyers
Handover with fitted furniture and appliances under the RFC package
An infinity swimming pool measuring 25 m on the 27th floor with a city view, a co-working space, a meeting room and a gym on the 28th floor, and a Sky Court roof garden with a vegetable garden on the 29th floor. The Statement Lobby features Cassina furniture, and at the rear of the plot there is a quiet garden, the Hidden Triangle Garden.
MRT Phra Ram 9 station on the Blue Line is 800 metres away, and the future Orange Line station is 300 metres away. Nearby are the Unilever House office tower at 610 metres, G Tower at 760 metres, Central Rama 9 at 780 metres and Praram 9 Hospital at 380 metres.
For investors, the project's appeal lies in its readiness and demand:
Apartments with fitted furniture and appliances can be let immediately after the keys are handed over
Rental demand is supported by the offices of the New CBD, the hospitals and the nearby Shrewsbury International School
The Orange Line metro, 300 metres away, will improve transport access in the district
Complex InfrastructureComplex Infrastructure
Swimming pool
Gated community
Charging station for electric vehicles
Yoga area
Co-working
Parking
meeting room
Laundry room.
Terrace on the roof
Fitness
Project Gallery
Developer
Sansiri is one of Thailand's largest and most established developers, whose projects can be confidently recommended to clients.
Sansiri Public Company Limited was founded in 1984 and has been among the country's leading developers for approximately 40 years. It is listed on the Thailand Stock Exchange (SET: SIRI), headquartered in Bangkok, and operates nationwide, developing condominiums, houses and townhouses.
Scale and figures
Founded: 1984.
Public status: SET listing since 1996.
Portfolio: hundreds of completed projects and tens of thousands of units; by the 2010s already 237 projects and over 60,000 properties across 9 provinces and one project in London.
2025: No. 1 in Thailand by number of new units launched — 1,847 units (approximately 12% of all launches in Bangkok and surrounding areas within the half-year period).
Plan for 2026: 30+ new projects with a combined value exceeding THB 50 billion, target sales of THB 48–53 billion, transfers of THB 39–46 billion.
Geography
Sansiri is particularly strong in:
Bangkok and its metropolitan area (urban condominiums and residential complexes).
Major tourist provinces (resort condominiums and complexes).
On Phuket, Sansiri is developing resort projects, one of which is RHEA by Sansiri in Cherng Talay, between Surin and Bang Tao beaches.
Developer approach and strengths
Sansiri positions itself as a full-service developer based on:
Property development — development of residential properties across different segments.
Property services — property management, brokerage, rental.
Hotel management and associated services.
Sansiri is one of few developers whose projects participate in official long-term investment and long-stay visa programmes for foreign buyers. Upon purchasing a condominium unit valued at THB 3 million and above and meeting immigration requirements, the owner gains the right to apply for an annual investor visa with renewal options, as well as to arrange residency status for family members.
In a number of pilot programmes launched on Phuket, Sansiri projects (including Rhea by Sansiri) are used as base properties for arranging such visas, and the developer, working with partners, assists owners with document preparation and submission.
Why we confidently recommend Sansiri to our clients
Nearly 40 years in the market and public status — transparent reporting, regular filings and investor oversight.
Strong track record — hundreds of completed projects, tens of thousands of handed-over units, leadership in number of launches and sales volume.
Experience in resort regions — not only Bangkok but major tourist destinations, including Phuket and projects such as RHEA by Sansiri.
Full range of services for owners — development, property management, rental and resident services, which is particularly important for foreign buyers.
Financial stability and growth plans — revenue exceeding $1.1 billion, profit around $170 million and dozens of new projects annually.
Through scale, experience and service quality, Sansiri logically belongs on the shortlist of developers that the agency can confidently recommend to clients considering property purchase in Thailand and Phuket.
