On-market resale residence. The asking price is indicative, quoted by the seller as of June 2026, and subject to availability. Floor placement and full details are confirmed in person.
Tonson One
About this residence
The residence
This two-bedroom residence of 118 square metres at Tonson One, on Tonson Lane off Ploenchit, near Lumphini Park in central Bangkok, is offered on the resale market at ฿48,500,000 (฿411,017 per square metre), an indicative asking price gathered from the market in July 2026. Embark Estate advises buyers on this residence.
- Configuration
- 2 bedrooms
- Size
- 118 sq.m
- Asking price
- ฿48,500,000
- Price per sq.m
- ฿411,017
- Tenure
- Freehold
- Status
- On the market, July 2026
The building
Tonson One Residence stands on Soi Tonson, a quiet lane off Langsuan near Lumphini Park, developed by Asset Five Group. It is a low-density 29-floor tower with around 80 residences, completed in 2023. [VERIFY exact unit count (sources give 80 to 126).] It is one of the newest freehold buildings on this stretch of the park-axis, where most land is leasehold.
The building is freehold, which means outright ownership that passes to heirs rather than a lease that has to be renewed. That tenure is comparatively scarce on the park-axis. Foreign buyers can hold freehold units within the foreign quota, which Thai law sets at 49 percent of a building's total saleable floor area, and Embark confirms a unit's quota status at inquiry.
See the full projectThe building's facilities
Shared amenities in this building, so a shared listing shows what living here is like.
New towers within a walk
Still being built around the same station. If you would rather buy new and wait, these are the ones to weigh against a finished home.
Key facts
The neighbourhood
The Lumphini park-axis runs from Wireless Road through Langsuan and Tonson to Ratchadamri, anchored by the city's largest central park and traced by an MRT-BTS interchange.
Lumphini park-axisCommon questions
Is it freehold or leasehold?
Freehold. Buyers hold outright title that passes to heirs. Foreign buyers can hold freehold units within the foreign quota, which Thai law sets at 49 percent of a building's total saleable floor area, and Embark confirms a unit's quota status at inquiry.
Who is the developer?
Asset Five Group.
When was it completed, and how big is it?
Completed in 2023. It is a low-density 29-floor tower with around 80 residences.
How does Embark help with a purchase here?
Embark advises on resale and rental at Tonson One Residence as part of our coverage of the park-axis. We source available residences, confirm foreign-quota status and current pricing privately, compare against other freehold buildings nearby, and work for the buyer side.
Inquire about this residence
A 2-bedroom residence of about 118 square metres at Tonson One, on the market at ฿48,500,000 (฿411,017 per square metre). Reply to arrange a viewing, or to confirm floor placement and full details in person.
We respond within 4 hours in working hours. Viewings by appointment, in person or live on a video call from anywhere.
Branded residences and individual luxury units across the Lumphini park-axis, Sukhumvit corridor, and Riverside.
Principal-led. A small number of buyers at any given time. A short call first; viewings only after priorities are clear.
High-volume listings, sales pressure, and pushing a unit when another residence fits the buyer better.
Looking at other residences on the lumphini park-axis? Browse all residences →