Prime Mansion Sukhumvit 31

Prime Mansion Sukhumvit 31 is a High Rise condominium located at 539 Khlong Tan Nuea, Watthana, Bangkok 10110, within Sukhumvit 31. The location offers convenient access to both Asok and Phrom Phong areas, making it suitable for city living. The project is approximately 1.3 km from BTS Phrom Phong Station, around 1.5 km from BTS Asok Station, and about 1.6 km from MRT Sukhumvit Station.

Developed by Prime Mansion Co., Ltd., the project was completed in 1981. It consists of 1 residential building with 16 floors and around 70 units. Unit types mainly feature large layouts, including 2-bedroom, 3-bedroom, and penthouse units, which are suitable for families or residents seeking more spacious living than typical condominiums. Parking is available within the project for residents.

Facilities include a swimming pool, fitness room, passenger lifts, common area, and garden space. The security system includes 24-hour security guards, CCTV, and key card access for residents.

From an investment and residential perspective, Sukhumvit 31 is a private residential street in the central Sukhumvit area, close to EmQuartier, Emporium, Terminal 21, Samitivej Sukhumvit Hospital, and several international schools. This makes the project appealing for both owner-occupiers and rental demand, especially among expatriates looking for larger units in a prime location. For a nearby project, see Ivy Thonglor.

Prime Mansion Sukhumvit 31 (Watthana) sits in the Phrom Phong area where leasing demand is supported by expatriates and family tenants. In 2026, resale pricing is relatively stable, yet it remains investable versus newer supply in Thonglor-Phrom Phong where entry prices are higher and compress rental returns.

• Resale price per unit (2026): 2-bedroom 120 sq.m. averages THB 16.8M
• Price per sq.m.: about THB 140,000 (typical range THB 125,000-160,000)
• Average rent: THB 75,000 per month for 2-bedroom (range THB 65,000-90,000)

Rental Yield (shown calculation): 75,000 x 12 = THB 900,000 per year. 900,000 divided by 16,800,000 = 5.36% gross yield (before common fees and taxes). This is comparatively attractive in Sukhumvit, as many new launches show lower yields due to premium pricing.

Capital Gain outlook: Using a 2024 baseline near THB 130,000 per sq.m. versus ~THB 140,000 per sq.m. in 2026 implies roughly 7-8% growth over two years, or about 3-4% per year. Upside is driven by Sukhumvit 31’s established residential profile, limited large-unit stock, and access to amenities around EmQuartier and Emporium, with BTS Phrom Phong about 1.1 km away.