Overview
Siri at Sukhumvit is a prestigious high-rise landmark that stands as one of Sansiri's most successful luxury projects in the Thong Lo area. Completed in 2009, this 34-storey tower has aged exceptionally well, maintaining its status as a "top-tier" choice for the Japanese expat community and executive renters.
The project's prime advantage is its absolute location. Situated directly on Sukhumvit Road between Soi 38 and Soi 40, it is a mere 150-meter walk to BTS Thong Lo. The building is known for its high-spec original finishes, including advanced Home Automation lighting systems in the units—a revolutionary feature at its time of completion. Despite its main-road location, the building's set-back entrance and high-quality glazing provide a surprisingly quiet living experience.
Developer
Sansiri PLC is widely regarded as one of Thailand's leading developers of quality luxury residences. Siri at Sukhumvit is managed by Plus Property (Sansiri's management arm), ensuring that the common areas, pool, and gym are maintained in pristine condition even as the building enters its third decade of operation.
Location & Transit
| Station | Line | Distance | Mode |
|---|---|---|---|
| BTS Thong Lo | Sukhumvit | 150m | Walk (3 min) |
| BTS Ekkamai | Sukhumvit | 650m | Walk (8 min) |
| Thong Lo Soi 55 | Lifestyle | 200m | Walk (4 min) |
Commute Logistics:
- Immediate Rail Access: Exit 4 of BTS Thong Lo is essentially at your doorstep. This makes it an ideal residence for those who refuse to deal with Bangkok's road traffic.
- Lifestyle Gateway: While the building is on the "quiet side" (Soi 38), it is directly opposite the entrance to Soi 55 (Thong Lo), placing Bangkok's most famous dining and nightlife hub within a 5-minute walk.
- Driving Access: Direct entrance from Sukhumvit Road. Drivers should note that returning home from the Asoke side requires a U-turn at Sukhumvit Soi 40/42.
Nearby Landmarks
| Place | Distance | Type |
|---|---|---|
| Fifty Fifth Thonglor | 70m | Community mall with diverse food options and retail |
| Sukhumvit Hospital | 1.0km | Modern hospital facility within walking or short driving distance |
| Gateway Ekkamai | 650m | Japanese-themed mall with a large MaxValu supermarket |
| Emporium / EmQuartier | 1.5km | World-class luxury shopping just one BTS stop away |
Building Facts
| Developer | Sansiri PLC |
| Completed | 2009 |
| Floors | 34 |
| Units | 460 |
| Ownership | Freehold |
Unit Types
| Type | Size | Notes |
|---|---|---|
| 1 Bedroom | 48 – 55 sqm | Large Format. Significantly larger than 2020-era 1-beds; often feature separate kitchens |
| 2 Bedroom | 60 – 94 sqm | Best Seller. Popular for small families; master baths often include bathtubs |
| 3 Bedroom | 99 – 145 sqm | Sky Family Suite. Corner units with panoramic city views and extensive living space |
Interior Note: Units are known for their bright and airy layouts. The higher floor units (20th floor+) offer unblocked views of the Chao Phraya River curve to the south or the vibrant Thong Lo skyline to the north.
Facilities
The Leisure Deck (6th Floor): Features a large saltwater swimming pool with a dedicated kids' zone, a Jacuzzi, and a pool bar—larger than most modern condo pools in the same area.
Wellness: A professional-grade fitness room overlooking the pool, plus a sauna and a Squash Court, a rare amenity in newer Sukhumvit projects.
Lobby: A grand, high-ceiling reception area that provides a 5-star hotel feel, managed by a dedicated concierge team.
Pros
- Location, Location, Location — 150m to BTS Thong Lo is unbeatable.
- Unit Sizes — Provides the extra square footage often missing in brand-new developments.
- Management Quality — Maintenance by Plus Property keeps the building looking modern and premium.
- High Liquidity — Always in high demand for the Japanese rental market.
Cons
- Age — Some interior unit decor may feel slightly dated if not recently renovated by the landlord.
- Main Road Traffic — Exiting by car onto Sukhumvit main road can be difficult during peak hours.
- Limited Parking — With ~65% parking ratio (300 spaces), visitor parking can be tight.
The Bottom Line
In 2026, Siri at Sukhumvit is the "Reliable Classic" of Thong Lo. It is the perfect choice for Japanese expats or CBD professionals who value a zero-commute lifestyle and larger living spaces. If you prioritize building reputation and BTS proximity over the "newest" building on the block, this remains one of Sukhumvit's strongest performers.
Last verified: January 11, 2026. Data sourced from Sansiri PLC and physical site audit.