The Room Sukhumvit 21

Floor count is the one project-level fact that should not be presented as settled. The advertising and legal disclosure reproduced by Home.co.th describes one 29-storey residential building with 213 units, identifies the land title and site area, records construction starting in November 2010 and states an expected April 2013 completion. Current databases disagree sharply: OpenStreetMap and several specialist catalogues show 28 levels, DDproperty uses 30, while PropertyHub and some FazWaz descriptions state 33. Those differences may reflect how parking, technical or numbered floors are counted, but there is no reliable basis to invent the reconciliation. This dossier therefore uses 29 as the legally disclosed figure and keeps the competing counts explicitly unresolved.

The apartment stock is noticeably larger than much of Bangkok's newer mass-market high-rise supply. Historical and current sources show one- and two-bedroom homes together with duplex formats. An older DDproperty project profile gives typical one-bedroom sizes around 50–53 sq m and two-bedroom homes around 103–152 sq m, although today's resale stock is broader: current listings include compact one-beds around 37 sq m as well as unusually large layouts. Think of Living documented an actual two-bedroom duplex of 116.5 sq m in 2013. The practical lesson is simple: the bedroom label is not enough to understand a unit here. A buyer should compare the actual plan, usable rooms, circulation and storage rather than assume all one-beds or two-beds are broadly equivalent.

The original layouts also have a design trait that may matter more in daily life than a few extra square metres. A contemporary review of an actual unit described the project as prioritising internal living area, with standard apartments using a separate utility yard for air-conditioning equipment, laundry and drying rather than a conventional balcony; special layouts could differ. That is neither inherently better nor worse. Someone who values a larger enclosed living room or separate kitchen may prefer it, while a buyer who expects an outdoor balcony should verify the exact plan before viewing. Resale advertisements often focus on furniture and views and may not make this distinction obvious.

The main amenity level is on the fourth floor. Current project databases consistently identify a roughly 5 by 24 metre swimming pool, fitness room, reading or study space and meeting area there, with the lobby and reception on the first floor. Other repeatedly listed facilities include a landscaped area, laundry service, 24-hour security, CCTV, controlled access and backup power. Lift data is also fairly consistent at three passenger lifts plus one service lift. Parking is described as more than 220 spaces, with several Thai catalogues specifying 227. That is strong project-level provision relative to 213 apartments, but a headline parking count is not the same as a deeded or guaranteed bay for a particular owner. Car-dependent buyers should confirm the current juristic rules and sticker allocation for the selected unit.

Ongoing costs are unusually well documented for an older Bangkok condominium. Multiple sources quote a common-area fee of THB 48 per sq m per month and an original sinking-fund contribution of THB 500 per sq m. These figures are useful as project references, not as a substitute for the current juristic statement. A resale unit can carry outstanding charges, and the building may have revised its budgets since the original data was published. Before transfer, the buyer should obtain the juristic person's debt-free certificate and confirm the current fee schedule rather than rely on a portal profile.

The October 2026 market is active on both the sale and rental sides. Public asking prices start at roughly THB 5.9M, with dozens of units advertised for sale and a much larger pool for rent. Current stock spans one-bedroom homes in the high-30s to low-50s square metres and large two-bedroom apartments reaching about 152 sq m, so headline prices naturally cover a wide range. A useful investment comparison is therefore within the building: match similar size, floor, condition and ownership status, then compare achievable long-term rent for genuinely comparable units. Portal-generated yield figures can be a starting clue, but they are not a substitute for a unit-level model that includes acquisition cost, transfer expenses, vacancy, furnishing and actual contracted rent.

For a foreign buyer, the key legal point is that The Room Sukhumvit 21 is a condominium, so direct foreign freehold is possible only while the building remains within Thailand's statutory foreign-ownership quota. Current resale listings do include units marketed as foreign quota, but that label should be verified rather than assumed. Before paying a deposit, the buyer should obtain the unit title, confirmation of available foreign quota from the condominium juristic person, a debt-free certificate and a clear payment route that satisfies the documentation required for foreign funds. In an established resale building, those unit-specific documents matter more to a clean transfer than the strength of the developer's brand alone.