Onyx Phahonyothin

Onyx Phaholyothin is located at 1505 Samsen Nai, Phaya Thai, Bangkok 10400. It is a High Rise condominium developed by Sansiri Public Company Limited and completed around 2012. The project consists of 1 residential building with 26 floors, offering approximately 620 units and around 240 parking spaces. This project is suitable for urban living in the Phaholyothin area with convenient access to central Bangkok.

Unit types include 1-bedroom and 2-bedroom layouts, with sizes ranging from about 25 - 58 sq.m. The project appeals to both end-users and investors looking for rental demand. A key location advantage is its proximity to BTS Saphan Khwai, about 250 meters away, and BTS Ari, about 900 meters away. Nearby landmarks include Big C Saphan Khwai, Or Tor Kor Market, Paolo Phaholyothin Hospital, and the Ari neighborhood known for its restaurants and cafes.

Facilities include a swimming pool, fitness room, garden, lobby, laundry room, and passenger elevators. Security features include 24-hour security guards, CCTV, and key card access. Project management follows Sansiri standards, which supports the long-term quality of common area maintenance and overall living environment.

For those comparing nearby condominium options, you may also view Villa Rachatewi.

Onyx Phahonyothin in 2026 remains a BTS-driven asset in Samsen Nai-Phaya Thai. Connectivity is the key value: BTS Saphan Khwai is about 450 m away, and BTS Ari about 1.1 km, supporting stable rental demand from office workers and university-related tenants in the inner-city Phahonyothin-Ari corridor.

• Resale price per unit (1-bed 28-32 sq.m.): THB 4.2-5.2M
• Average resale price: ~THB 155,000-175,000 per sq.m.
• Average rent: THB 18,000-24,000 per month (floor, view, furnishing dependent)

Rental Yield (quick method): for a 30 sq.m. unit priced at THB 4.65M and rented at THB 21,000 per month, annual rent = 21,000 x 12 = THB 252,000. Yield = 252,000 / 4,650,000 = 5.4% per year (before common fees, taxes, and vacancy).

Capital Gain view: using a realistic 2-4% annual appreciation for inner-BTS condos, pricing could move toward ~THB 160,000-185,000 per sq.m. over the next 12 months. For the sample unit, that implies roughly THB 90,000-180,000 upside, assuming market liquidity remains healthy. The main support is scarcity of walkable-BTS supply and resilient rental demand around Ari-Phahonyothin employment hubs.