# The Monument Sathon, Sathorn and Silom, Bangkok

Source: https://www.thailandpropertyinvestor.com/developments/the-monument-sathon
Updated: 2026-11-14
Publisher: Thailand Property Investor (Omnia Capital Group)

The Monument Sathon is a 29-storey freehold condominium of 185 homes on Sathorn Soi 10, in the Sathorn and Silom business district, from one-bedrooms of 39 sqm to two penthouses of up to 303 sqm. BTS Saint Louis is 80 metres from the gate and prices start from THB 9.9 million. It suits buyers who want a city home with pets allowed, ready in December 2029.

## Key facts

- Location: Sathorn and Silom, Bangkok, Thailand
- Developer: Sansiri
- Build status: Off-plan, completion expected Q4 2029
- Property types: Condominium, Penthouse
- Tenure: freehold
- Guide prices from: THB 9,900,000 (checked 2026-11-14)
- Homes in the development: 185
- Storeys: 29
- Coordinates (longitude, latitude): 100.5275, 13.7224

## Homes

Guide prices. Ask us for the current price list.

| Home | Type | Bedrooms | Size | Guide price | Tenure | Availability | Page |
| --- | --- | --- | --- | --- | --- | --- | --- |
| One-bedroom Residence | Condominium | 1 | 39 to 69.25 sqm | THB 9,900,000 | freehold | Available | https://www.thailandpropertyinvestor.com/developments/the-monument-sathon/1-bedroom-residence |
| One-bedroom Plus | Condominium | 1 | 74.5 sqm | Price on request | freehold | Available | https://www.thailandpropertyinvestor.com/developments/the-monument-sathon/1-bedroom-plus |
| Two-bedroom Residence | Condominium | 2 | 80.25 to 108.75 sqm | Price on request | freehold | Available | https://www.thailandpropertyinvestor.com/developments/the-monument-sathon/2-bedroom-residence |
| Three-bedroom Residence | Condominium | 3 | 130.75 to 201.75 sqm | Price on request | freehold | Available | https://www.thailandpropertyinvestor.com/developments/the-monument-sathon/3-bedroom-residence |
| Penthouse | Penthouse | 3 | 240 to 303 sqm | Price on request | freehold | Limited availability | https://www.thailandpropertyinvestor.com/developments/the-monument-sathon/penthouse |

## Sathorn Soi 10, beside BTS Saint Louis

The Monument Sathon stands on Soi 10, on the north side of Sathorn Road, in the heart of the [Sathorn and Silom](https://www.thailandpropertyinvestor.com/areas/bangkok/sathorn-silom) business district. BTS Saint Louis is 80 metres from the entrance, Chong Nonsi 600 metres and Surasak 850 metres, so Silom, Siam and the river are a few stops away. Sathon Square is 400 metres on foot and King Power Mahanakhon 600 metres. Saint Louis Hospital is 400 metres away and BNH Hospital 1.1 km. For families, Bangkok Christian College is 650 metres away and Shrewsbury International School 3.4 km.

## A Sansiri and Nomura Real Estate tower

Sansiri, a developer listed on the Stock Exchange of Thailand, last used The Monument name a decade ago, for The Monument Thong Lo and The Monument Sanampao. The project is a THB 4.5 billion joint venture, 55% Sansiri and 45% Nomura Real Estate (Thailand). One 29-storey tower of 185 homes sits on about 1 rai. A pink trumpet tree more than 50 years old is kept at the gate. The environmental approval and building permit are granted. By 10 November 2026 the work was 2% complete, and completion is scheduled for December 2029.

## The homes

Every plan is drawn and available now. One-bedrooms come in twelve layouts from 39 to 69.25 sqm, and a one-bedroom plus of 74.5 sqm adds a multi-purpose room. Two-bedrooms run from 80.25 to 108.75 sqm and three-bedrooms from 130.75 to 201.75 sqm. Two penthouses of 240 and 303 sqm on floor 28 have a maid's room and a Thai kitchen. Prices run from THB 9.9 million to THB 150 million.

Facilities are stacked by floor: the lobby and garden lounge at ground level, pet rooms on floor 7, pools, onsen, cold therapy, a gym and a Pilates studio on floors 25 to 27, and a private dining room and roof garden on floor 29. Parking covers about 102% of homes.

## Owning and letting

You hold the unit freehold in your own name, within the 49% foreign quota, with the money sent from abroad in foreign currency. Read [the foreign quota guide](https://www.thailandpropertyinvestor.com/guides/condominium-foreign-quota) and [sending money to Thailand](https://www.thailandpropertyinvestor.com/guides/sending-money-to-thailand). Ask us for the payment schedule and the service charges before you reserve. There is no rental programme: lets must run for 30 days or more, through an agent you choose. The [rental yield calculator](https://www.thailandpropertyinvestor.com/tools/rental-yield-calculator) shows what a yearly let returns after costs.


## Who it suits

The Monument Sathon suits a buyer who wants a freehold home in the business district from two large developers, with a station at the gate and pets allowed. A one-bedroom suits a pied-a-terre or a long let to an office tenant; the three-bedrooms and penthouses suit a family who would otherwise rent a house in the Sathorn sois. It does not suit anyone who needs the home before 2030. Our [off-plan buying guide](https://www.thailandpropertyinvestor.com/guides/off-plan-buying-process) explains how to judge a three-year build.

## Strengths

- BTS Saint Louis is 80 metres from the entrance and Chong Nonsi 600 metres, so you reach Silom, Siam and the office towers by train.
- Sansiri is a listed developer with completed towers to inspect, and Nomura Real Estate holds 45% of the project, a second large developer with its own money at stake.
- Every layout is drawn, from 39 sqm to 303 sqm, so you choose the exact plan before you commit.
- Schools and hospitals are close at hand. Saint Louis Hospital is 400 metres away, BNH Hospital 1.1 km and Bangkok Christian College 650 metres.
- Each penthouse has a maid's room and a Thai kitchen, rare in new Bangkok towers.

## Considerations

- Completion is scheduled for December 2029, and by 10 November 2026 construction was 2% complete. Your money is committed for about three years before you can use or let the home.
- Get the payment schedule and service charges from us in writing, with the late-delivery terms of the sale and purchase agreement, before you reserve.
- The site is about 1 rai for 185 homes, so open space is limited at ground level. Most facilities sit on floors 7, 25 to 27 and 29.
- The 39 sqm one-bedrooms will appeal to investors, so expect a mix of owners and tenants in the building.
- Sathorn Road traffic is heavy at peak hours. Drive times shown are off-peak; the BTS is the reliable route.

## Amenities

- Infinity-edge swimming pool
- Children's pool
- Hydrotherapy pool and jacuzzi
- Onsen heat therapy room
- Cold shower therapy
- Exercise room
- Pilates studio with reformer machines
- Study and drawing room
- Children's playground
- Private dining room on floor 29
- The Canopy rooftop garden
- The Monument Hall lobby and garden lounge
- Pet sky lounge and pet sky park on floor 7
- Pet grooming and spa room
- Concierge service
- 24-hour security with LIV-24 monitoring and CCTV
- EV charging
- About 102% conventional parking

## Distances

- BTS Saint Louis on foot (80 m): about 1 minutes
- BTS Chong Nonsi on foot (600 m): about 8 minutes
- BNH Hospital (off-peak drive): about 3 minutes
- One Bangkok (off-peak drive): about 3 minutes
- Lumphini Park (off-peak drive): about 5 minutes
- Shrewsbury International School (off-peak drive): about 8 minutes
- ICONSIAM (off-peak drive): about 9 minutes
- Suvarnabhumi Airport (off-peak drive): about 33 minutes

## Questions

### Can foreigners buy freehold at The Monument Sathon?

Yes. You can own a unit freehold in your own name within the 49% foreign quota that applies to every Thai condominium, provided the purchase money comes from abroad in foreign currency. Ask us which units are still available on the foreign quota.

### What is the payment plan at The Monument Sathon?

Off-plan towers in Bangkok usually take a booking fee and a deposit over the build, with the balance at transfer. The exact terms here come with the reservation papers, so ask us for the current schedule before you decide.

### When will The Monument Sathon be completed?

Completion is scheduled for December 2029. The environmental approval and building permit are granted, and by 10 November 2026 the building was 2% complete. We send you progress updates through the build.

### What are the prices at The Monument Sathon?

Prices run from THB 9.9 million to THB 150 million, from the 39 sqm one-bedroom to the largest penthouse. Prices per unit depend on floor and plan; the price list has them all.

### What are the service charges at The Monument Sathon?

Ask us for the common-area fee and the sinking fund before you reserve, since both are set per square metre and add up on the larger homes.

### How far is The Monument Sathon from the BTS?

BTS Saint Louis is 80 metres away, Chong Nonsi 600 metres and Surasak 850 metres. Suvarnabhumi Airport is about 33 minutes by car off-peak.

### Can I keep a pet at The Monument Sathon?

Yes. The building is designed for pet owners, with a pet sky lounge, a pet sky park and a grooming and spa room on floor 7.

## Sources

- [Sansiri, The Monument Sathon project page (factsheet, facilities, distances, price range)](https://www.sansiri.com/condominium/the-monument-sathon/en/)
- [Sansiri, The Monument Sathon e-brochure (unit sizes, floors, facilities)](https://s3.ap-southeast-1.amazonaws.com/o77site/webproject-source/condominium/the-monument-sathon/pdf/e-brochure-the-monument-sathon-en.pdf)
- [Sansiri, construction progress report updated 10 November 2026 (2% complete, expected completion December 2029)](https://www.sansiri.com/projectprogress/)
- [Sansiri, condominium listing (price from THB 9.9 million to THB 150 million)](https://www.sansiri.com/condominium/)
- [The Nation, Sansiri and Nomura Real Estate (Thailand) unveil The Monument Sathon (14 August 2026)](https://www.nationthailand.com/pr-news/40069789)
- [OSRM routing on OpenStreetMap data, off-peak drive times measured 14 November 2026](https://router.project-osrm.org/)