Quattro by Sansiri Thonglor: Premium Compact Condo Full Review

If you have spent any time searching for a condo in Thonglor, you already know the area is packed with options. From flashy new high-rises to older walk-ups, the range is enormous. But somewhere in the middle sits a building that keeps popping up in conversations among expats and young professionals who want quality without the massive price tag of Thonglor's ultra-luxury towers. That building is Quattro by Sansiri. Sitting quietly on Sukhumvit Soi 55, this mid-rise development has carved out a loyal following since its completion. Let's break down whether it actually lives up to its reputation and if it makes sense for your next rental in Bangkok.

Location and Getting Around from Quattro Thonglor

Quattro by Sansiri sits on Sukhumvit Soi 55 (Thonglor), roughly midway between BTS Thong Lo and BTS Phrom Phong. It is about a 10 to 12 minute walk to BTS Thong Lo station, which is manageable on a cool evening but can feel long during Bangkok's hot season. Most tenants here end up relying on motorcycle taxis from the soi entrance or grab bikes for the last stretch.

What makes this location special is the access to both Thonglor and Phrom Phong lifestyle zones. You can walk to The Commons Thonglor in under five minutes, grab coffee at Roots, or wander over to J Avenue for dinner. Heading the other direction toward Phrom Phong, you reach EmQuartier and The Emporium in about the same time by taxi.

Here is a real scenario. Imagine you work at one of the offices near Asoke or Ploenchit. Your morning commute on the BTS is two to four stops, roughly 15 minutes door to platform. After work, you hop off at Thong Lo, grab a motorcycle taxi for 20 baht, and you are home. Weekends, you are steps away from some of the best restaurants and nightlife in Bangkok. That is the daily reality of living at Quattro.

Building Quality and Unit Layout

Quattro was developed by Sansiri, one of Thailand's most established property developers. The building was completed around 2012 and is a low-rise development with only eight floors. This matters because it means fewer units, less crowding at the elevators, and a quieter overall atmosphere compared to the 30-plus story towers that dominate Sukhumvit.

Units range from one-bedroom to two-bedroom layouts. The one-bedroom units typically come in at around 45 to 55 square meters, which is generous for Bangkok standards. Two-bedroom units run between 75 and 95 square meters. Ceilings are a comfortable 2.7 meters, and the floor-to-ceiling windows in most units let in solid natural light.

One thing that stands out is the finishing quality. Sansiri used good materials here. You will find engineered wood flooring, solid kitchen countertops, and bathroom fixtures that have held up well over the years. According to data from DDproperty, Quattro by Sansiri consistently ranks among the higher-rated Sansiri developments in the Thonglor area for build quality and tenant satisfaction.

A couple I know relocated from a studio in On Nut to a two-bedroom at Quattro. Their biggest reaction was how quiet the building felt. No construction noise from neighboring plots, no late-night elevator crowds. For them, the difference was night and day.

Rent Prices and What You Actually Pay

Let's talk numbers. Average rent for a one-bedroom unit at Quattro Thonglor currently falls between 28,000 and 38,000 THB per month, depending on floor level, furnishing condition, and how motivated the landlord is. Two-bedroom units range from 45,000 to 65,000 THB per month. These figures place Quattro in the mid-to-upper segment of Thonglor rentals, but well below the true luxury tier occupied by buildings like KHUN by YOO or Beatniq Sukhumvit 32.

Here is a citable data point worth remembering. According to Knight Frank Thailand's Bangkok residential market reports, average asking rents for condos in the Thonglor to Ekkamai corridor sit at approximately 600 to 900 THB per square meter per month for buildings in the mid-to-premium range. Quattro falls right in the middle of that band, making it competitive for the quality you receive.

On top of rent, expect a standard two-month security deposit and one month advance rent. Common area fees are handled by the building management and are included in your rent in most cases. Utilities, including electricity and water, typically add another 2,000 to 4,000 THB per month depending on your air conditioning habits.

Facilities and Day-to-Day Living

Quattro keeps its facilities focused rather than trying to compete with the resort-style amenity wars you see in newer developments. There is a rooftop swimming pool, a small but functional fitness room, a garden area, and 24-hour security with key card access. Parking is available for tenants who drive, though spaces can be limited during peak hours.

The pool is the highlight here. Because the building is low-rise, the rooftop pool area feels open and private. You are not sharing it with 500 other units. On a typical weekday afternoon, you might have the pool entirely to yourself. Compare that to a mega-project like The Lumpini 24, where you might wait for a lane during peak times.

For daily essentials, there is a 7-Eleven within a two-minute walk, and Tops Supermarket at J Avenue is close by. If you need a serious grocery run, Villa Market on Thonglor Soi 13 and Gourmet Market at The EmQuartier are both accessible within 10 minutes. For healthcare, Bumrungrad International Hospital is a short taxi ride away on Sukhumvit Soi 3, roughly 10 to 15 minutes depending on traffic.

A freelancer friend of mine who works from home chose Quattro specifically because the low density means the Wi-Fi infrastructure handles well and the building stays quiet during work hours. For remote workers, that kind of environment is harder to find than you might think in central Bangkok.

How Quattro Compares to Nearby Options

Thonglor has no shortage of condos. Picking the right one comes down to your priorities. Here is how Quattro stacks up against some of the most commonly compared buildings in the immediate area.

Building	1-Bed Rent (THB/month)	Unit Size (sqm)	Year Completed	BTS Walk Time	Best For
Quattro by Sansiri	28,000 - 38,000	45 - 55	2012	10 - 12 min	Quiet living, good value
Noble Remix	22,000 - 30,000	35 - 45	2009	3 - 5 min	BTS proximity, budget-friendly
HQ Thonglor	35,000 - 50,000	45 - 60	2017	8 - 10 min	Newer build, modern amenities
Keyne by Sansiri	25,000 - 35,000	35 - 50	2013	2 - 3 min	BTS-adjacent convenience
KHUN by YOO	55,000 - 80,000	50 - 70	2019	8 - 10 min	Luxury design, high-end lifestyle

As you can see, Quattro sits in a sweet spot. It is not the cheapest option on the street, and it is not trying to be. But for tenants who want solid Sansiri quality, reasonable space, and a quiet low-rise environment, it consistently outperforms buildings that cost the same or more.

Who Should Rent at Quattro Thonglor (And Who Should Not)

Quattro works best for a specific type of renter. If you are a couple or a solo professional who values space and quiet over flashy amenities and rooftop bars, this building will feel like home. It is also a solid pick for remote workers and freelancers who need a peaceful daytime environment without retreating to the suburbs.

Families with young children might find the unit sizes on the smaller side, especially if you need a dedicated play area or study room. For families, a two-bedroom at Quattro could work, but you might want to also explore options further along Sukhumvit toward Ekkamai or Phra Khanong where larger units are available at lower price points.

If you are the type who wants a massive gym with a sauna, a co-working space, a sky lounge, and a pet-friendly policy, Quattro will feel underwhelming. Newer developments like HQ Thonglor or Tela Thonglor go much harder on the facilities front. But those buildings also come with higher rents and more neighbors.

I know a marketing manager who moved to Bangkok from Singapore and spent three weeks viewing condos in Thonglor. She ultimately chose Quattro because the moment she walked into the lobby, it felt calm. No construction dust, no crowds, no aggressive leasing agents. She has renewed her lease twice since then.

Final Thoughts on Renting at Quattro by Sansiri

Quattro Thonglor is not the newest or the flashiest condo on Sukhumvit Soi 55. It does not have the Instagram-ready infinity pool or the celebrity architect branding. What it does have is consistent Sansiri build quality, generous unit sizes for the price, a genuinely quiet living environment, and one of the best lifestyle locations in Bangkok right outside your door.

For renters in the 28,000 to 65,000 THB range who want a proven building with low turnover and a mature residential feel, Quattro remains one of the smarter picks in Thonglor. It is the kind of place where you sign a one-year lease and end up staying for three.

If you are looking for available units at Quattro or want to compare it with other options in Thonglor, head over to superagent.co. Superagent's AI-powered search makes it easy to filter by budget, location, and unit type so you can find the right condo without spending weeks on viewings.