

Projects · The Monument Thong Lo
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The Monument Thong Lo is a freehold condominium on Soi Sukhumvit 55 (Thonglor) in Bangkok, developed by Sansiri as part of its Luxury Collection, a 45-floor tower of 127 residences completed in 2019.
The essentials.
The Monument Thong Loの住戸価格の目安
2026年7月時点の売出価格・募集賃料 · すべての物件を見る
市場に出ているリセール・賃貸住戸の価格の目安です。Embarkは買主側の立場で助言いたします。正確な階数・価格・空き状況は、個別のご相談の際にご確認ください。
On the market at The Monument Thong Lo
The residences currently on the market, gathered in one register. Embark advises on the buyer side.
One-bedroom residences1 on the market54 sq.mFrom฿19.5MView 1
Two-bedroom residences10 on the market124–125 sq.mFrom฿29.99MView 10
Three-bedroom residences2 on the market252–253 sq.mFrom฿102MView 2
Indicative resale observations gathered from the market. Embark advises on the buyer side. Exact floor, price, and availability are confirmed in person.
Two-bedroom residences4 on the market124–125 sq.mFrom฿120K/ monthView 4
Three-bedroom residences2 on the market252 sq.mFrom฿350K/ monthView 2
Indicative asking rents gathered from the market. Embark advises on the buyer side. Terms and availability are confirmed in person.
Tell us which residence, and whether you are buying or renting.
Luka が4時間以内に個別にご返信します。
The building.
The Monument Thong Lo stands on Soi Sukhumvit 55 (Thonglor), developed by Sansiri and designed by Quintrix Architects. It is a 45-floor tower with 127 residences, completed in 2019 under Sansiri's Luxury Collection and its Luxury is Space concept. A maximum of four homes per floor, each reached by a private lift, gives the building a low density that is unusual for Thonglor. Units are large, running from two-bedroom layouts of about 1,337 square feet to penthouses above 5,000 square feet.

The building is freehold, which means outright ownership that passes to heirs rather than a lease that has to be renewed.
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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.

Because the tower completed in 2019, this is now a resale and rental market.
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The Monument Thong Lo is available through our developer network, and Embark advises on resale and rental here as part of our coverage of the Sukhumvit corridor. We source available residences, confirm foreign-quota status, and share current pricing privately, on request.
The neighbourhood.
The densest international residential corridor in Bangkok, read station by station.
- The stationsFour BTS stations define the corridor and its sub-markets: Asok, Phrom Phong, Thonglor and Ekkamai.
- The greenTwo parks sit inside the corridor, which is unusual on this side of the city and shows in what the park-facing buildings ask.
- Who lives hereIt is where Bangkok's international residents concentrate, and the rental market is correspondingly the deepest in the city.
Sukhumvit corridorRead the neighbourhood guide
Market intelligenceA Asset's first Thai project: a 7-rai mixed-use at Thonglor
Market intelligenceScope Prasanmitr: 62 residences on a Sukhumvit 23 corner
Market intelligence16th Avenue by AP: the rumoured Asok tower beside Exchange Tower
CorridorsPhrom Phong and the Em District: a buyer's guide
Branded residencesOnly 78 residences: inside SLS Residences Bangkok Sukhumvit 24
Branded residencesInterContinental Residences Bangkok Asoke: 88 freehold corner homes
CorridorsOnly 11 homes: Sansiri's Sukhumvit 51 tower in Thonglor
Market intelligenceThe Monument Sathon: Sansiri and Nomura's first joint venture
Others on the same corridor
Considering The Monument Thong Lo? We will tell you honestly how it compares.
We respond within 4 hours in working hours. Viewings by appointment.
Common questions.
Is The Monument Thong Lo freehold or leasehold?
It is freehold. 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?
The Monument Thong Lo was developed by Sansiri, with architecture by Quintrix Architects. It forms part of Sansiri's Luxury Collection.
When was it completed, and how big is it?
The building was completed in 2019. It is a single 45-floor tower with 127 residences, with a maximum of four homes per floor and large units served by private lifts.
How does Embark help with a purchase here?
The Monument Thong Lo is available through our developer network. Embark advises on resale and rental here, sourcing available residences and confirming foreign-quota status and current pricing privately, on request. Reach out to start a private conversation about availability.