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The BASE Garden Rama 9

The BASE Garden Rama 9 is a 36-storey condominium on Rama 9 Road in Hua Mak, Bang Kapi. Sansiri's official brochure records 639 residential units plus one commercial unit in a single tower.

BangkokBased on developer material

Cover image of The BASE Garden Rama 9, Bangkok

From 2,590,000 THBPer broker listings. Current price list, layouts and availability — discussed one-to-one with a project specialist

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What it is
Condominium
Where
18 Rama 9 Road, Hua Mak, Bang Kapi, Bangkok 10240, Thailand · Bangkok
Stage
Completed · 2019
Price
From ฿2,590,000guide price, final by unit
Transparency
10 facts confirmed · 7 to verify
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Developer context

Who is behind this project

Developer
SansiriPublic company · SIRIOpen developer profile →
Track record
Sansiri’s corporate timeline gives a useful picture of how the business evolved.Company data; check the specific project independently.
Projects with us
82
Transparency
Public reporting (SIRI) — independently checkable
Developer transparency index: High

Brand ≠ the legal entity signing your contract. This project may use a separate project company or joint venture — verify the seller and developer for the selected unit.

Why this project is worth a look

Deep resale inventory

A large number of sale and rental listings gives buyers more evidence on floors, layouts, refurbishment and asking prices than a small building with occasional transactions. The same depth also means sellers and landlords compete with one another, so a single advertisement should never be treated as the project's market price.

Two transit stories

Ramkhamhaeng Airport Rail Link is already operating within roughly a kilometre. The Orange Line should add another rail option, but that benefit is future-dated: MRTA's current plan points to January 2028 for eastern-section service.

Layered green space

The garden concept is supported by Sansiri's own brochure, including a dedicated fifth-floor garden in addition to ground-level shared areas. That gives a 36-storey tower more outdoor common space, although buyers should inspect present condition and peak-time use rather than judge it from launch imagery.

Parking is constrained

Public project profiles consistently put parking at around 40% of unit count before tandem spaces. For car owners, current allocation and access rules can materially affect daily usability and should be confirmed before paying a deposit.

Brand versus owner

The development is marketed under Sansiri, but the official brochure identifies BTS Sansiri Holding Seven Co., Ltd. as project owner. The distinction matters mainly when tracing the development's legal and contractual history.

About the project

The BASE Garden Rama 9 is a 36-storey condominium on Rama 9 Road in Hua Mak, Bang Kapi. Sansiri's official brochure records 639 residential units plus one commercial unit in a single tower. The development was created under the Sansiri brand through the Sansiri–BTS joint-venture platform; the brochure identifies BTS Sansiri Holding Seven Co., Ltd. as the project owner. That distinction is worth retaining in a due-diligence file: Sansiri is the consumer-facing developer brand, while a dedicated joint-venture company sits behind this specific project.

This is a sizeable urban building rather than a boutique condominium. Putting 639 homes into one tower means more resident movement around lifts, parking and shared facilities, particularly around commuting hours. The benefit is a broader amenity package than many small buildings can support, including a pool, gym, landscaped common areas and a separate fifth-floor garden. Buyers should treat scale as a practical choice, not a quality label. Someone prioritising quiet corridors and very few neighbours may find it busy; someone wanting an active resale and rental market may appreciate the larger stock base.

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The original product mix is unusually clear. Sansiri's brochure lists one-bedroom units from 26.50 to 34.75 sqm and two-bedroom units from 49.75 to 55 sqm, both with one bathroom in the published schedule. Resale agents sometimes describe modified or flexible layouts as '1+1', and individual unit areas can sit slightly outside the original marketing bands. That is normal in a mature resale building, but the registered title area and actual plan of the unit being purchased should control.

The location sits at the meeting point of the Rama 9 and Ramkhamhaeng urban corridors. The tower fronts a major road, so road access is geographically direct, but Bangkok traffic makes journey time highly time-sensitive. An independent Thai project review also noted the turning pattern around Ramkhamhaeng intersection, where some trips require an additional U-turn rather than a simple direct turn. Buyers who expect to drive daily should test the route at their real commuting times rather than rely on a map showing only distance.

Existing rail access comes from the Airport Rail Link at Ramkhamhaeng. Depending on the source and walking route, the station is roughly 700–970 metres from the building. That makes rail a realistic option for trips toward Makkasan, Phaya Thai and Suvarnabhumi Airport, although this is not a station-at-the-door development. For some residents the walk is entirely practical; for others weather, luggage or late-night travel may make a short connecting ride preferable.

The future Orange Line is an important part of the area's transport story, but it needs accurate timing. Ramkhamhaeng 12 station is part of MRTA's confirmed eastern Orange Line alignment and public property maps place it roughly 800–850 metres from the condo. As of 13 September 2026, however, passengers cannot use that line. MRTA's current implementation plan points to January 2028 for the eastern section to begin operation. Any purchase case that assumes the Orange Line is already open is therefore premature.

The surrounding neighbourhood is mature rather than speculative. Foodland Hua Mak, retail along Ramkhamhaeng, The Mall Ramkhamhaeng, hospitals, restaurants and everyday services are already established in the wider area. That reduces reliance on the condominium itself for daily needs. The trade-off is a denser and noisier urban setting than a quiet residential soi. Floor level and window orientation can materially change the experience inside the same building, especially where units face major traffic corridors.

Common facilities are supported by both the official brochure and current project profiles. They include a swimming pool, equipped fitness room, gardens and recreation areas, the fifth-floor garden, lobby space, CCTV and round-the-clock security. FazWaz also lists a children's pool, outdoor children's area and access control. In a building of this size, facility condition and peak-time crowding are more useful to inspect than the original amenity count. A pool that photographs well but is heavily used may feel very different from the sales material.

Parking is a more tangible constraint. Current independent profiles repeatedly cite capacity at roughly 40% of the residential unit count before tandem parking is considered. With 639 apartments, that does not imply one bay per home. A resale advertisement may mention parking rights, but the condominium juristic person's current rules matter more. Car owners should check allocation, permits, tandem arrangements, visitor parking and whether tenant vehicles are treated differently.

Published common-area charges are relatively consistent across PropertyHub, DDproperty and FazWaz at THB 55 per sqm per month. FazWaz also records an original sinking-fund contribution of THB 500 per sqm. For a completed building in 2026, these figures are useful project references rather than substitutes for live juristic-person documentation. Current fees, special assessments and major-work budgets may have changed. A resale buyer should request the debt-free certificate, latest fee schedule and recent meeting information before transfer.

The project is now firmly a resale market. In August 2026, DDproperty carried an active unit at THB 2.59 million for about 32.7 sqm, while PropertyHub also showed a one-bedroom listing at the same price level. Other one-bedroom units are marketed materially higher and two-bedroom homes occupy a different budget range. We therefore use THB 2.59 million only as the current lower asking-price anchor. It is not a universal project price and says nothing by itself about view, floor, condition, foreign quota or seller motivation.

Rental depth is visible as well. Public listings in early September 2026 showed smaller one-bedroom apartments from around THB 11,000 per month, with better positioned, larger or more furnished units asking more. Those figures demonstrate a functioning rental market, not guaranteed investment performance. Vacancy, leasing commission, furnishing, repairs, common charges, taxes and the actual acquisition price all sit between gross advertised rent and the owner's net result.

Foreign-buyer eligibility is structurally straightforward because this is a registered condominium rather than a landed property. Thai rules allow foreigners to own condominium units freehold provided aggregate foreign ownership remains within 49% of the total unit area in the building. An advertisement saying 'freehold' does not prove that foreign quota is available for that particular resale unit on transfer day. The condominium juristic person must confirm the foreign ratio, while the buyer also checks the title, debt status and required remittance evidence.

The building is old enough for physical due diligence to matter. Most major current databases place completion in 2019, often specifically December 2019, while some Thai property databases show 2018. The completed status itself is not in doubt; the year label varies. More importantly, a buyer should inspect lifts, pool systems, waterproofing, corridors, façade condition, building services and reserve funding. Construction-delivery risk has disappeared, but maintenance and capital-expenditure risk have taken its place.

Project identity is also worth checking because the older The Base Rama 9–Ramkhamhaeng is nearby and has a very similar name. That separate Sansiri project has different specifications, including 35 floors and 923 units. Search engines and agents can easily blur the two. The address, building photographs, juristic-person name and unit title should all correspond to The BASE Garden Rama 9 before project-level assumptions are applied.

Vertical circulation is also worth testing in person. FazWaz lists three passenger lifts and one service lift for the tower, while PropertyHub publishes a 2.55 m ceiling height. In a 36-storey building with 639 apartments, lift performance can affect everyday comfort, so a peak-hour visit is more informative than the raw count. A 2.55 m ceiling is a conventional urban specification for this segment; perceived space will depend more on unit width, glazing and layout than on unusually high ceilings.

Overall, The BASE Garden Rama 9 is most convincing as a completed, relatively affordable high-rise option in an established eastern-central Bangkok corridor, with current Airport Rail Link access and a broad resale inventory. Its compromises are equally clear: traffic, large-building density, parking capacity below one space per unit and the fact that the Orange Line benefit is still future rather than present. The purchase decision should therefore be driven by the exact apartment, noise and view, live juristic-person finances and foreign-quota position, not simply by the Sansiri name or a promised metro opening.

Ownership format

A foreign buyer may own a condominium unit freehold within the statutory foreign quota, which may not exceed 49% of the total area of all units in the registered condominium. Available foreign quota for the selected unit must be confirmed by the condominium juristic person before transfer.

Unit types & sizes

1 bedroom
26.50–34.75 sqm
1 bathroom

The core compact format. Resale listings may use flexible '1+1' labels or show areas slightly outside the original brochure range; the selected unit's registered area and actual plan should be checked against its documents.

From THB 2.59M in active August–September 2026 resale inventory
2 bedrooms
49.75–55 sqm
1 bathroom in the official brochure

The less common family-sized format. Current listings confirm units around 50–55 sqm; condition, floor, view and fit-out materially affect resale pricing.

Around THB 4.5M for roughly 54 sqm listings seen in 2026; verify the specific unit separately

Area ranges come from Sansiri's official brochure. Resale inventory includes individual units marketed with different layout labels; the selected unit's title and registered area control for a transaction. Prices are the lowest the brokerage boards publish, not the developer’s price list — the price and availability of a specific unit are something we go through with you personally.

Facilities

11 amenities

Leisure

  • swimming pool
  • children's pool
  • communal gardens
  • 5th-floor garden
  • recreation areas

Fitness

  • equipped fitness room

Security and access

  • 24-hour security
  • CCTV
  • access control
  • lobby

Parking

  • parking at roughly 40% of unit count before tandem parking

How the tower is arranged

  1. Ground / lower levelMain shared facilities, pool and gym in current project profiles
  2. 5th floorAdditional communal garden and recreation space in the official brochure

Location

  • Ramkhamhaeng Airport Rail Link — roughly 0.7–1.0 km depending on walking route and source.
  • Future MRT Orange Line Ramkhamhaeng 12 station — roughly 0.8–0.85 km on public project maps; the line is not open as of 13 Sep 2026, with MRTA currently targeting January 2028.
  • Foodland Hua Mak — about 0.5 km in current project databases.
  • Ramkhamhaeng retail and daily services, including The Mall Ramkhamhaeng, are within roughly 1 km.
  • The nearest expressway access is reported at around 0.7 km by current property databases.

Address / landmark18 Rama 9 Road, Hua Mak, Bang Kapi, Bangkok 10240, Thailand

The map loads from OpenStreetMap on request.

The circle shows the project’s approximate location; we confirm the exact address and the plot boundaries when you get in touch. © OpenStreetMap contributors.

District context

About this district

The district guide explains everyday context. Check the specific unit, price and documents separately.

Price & purchase terms

  • Current price: From THB 2.59M based on an active DDproperty resale listing published in August 2026 and corroborated by PropertyHub inventory. This is a lower market anchor as of 13 September 2026, not a project-wide fixed price; the selected unit, availability, condition, foreign quota and final terms require separate confirmation.
  • Completed: 2019-12

We show the lowest of the prices the brokerage boards publish: their figures for the same unit differ by a few per cent, and none of them is the developer’s price list. We ask the developer for the current price, availability and payment terms on the unit you are looking at, and go through them with you personally.

Completed

Project stage — what we know

Completed in 2019. Not a render.

Visit in person and see the real units; resale and rentals exist.

  1. Planned
  2. Building
  3. Done
Verified by NovAsia

Transparency index

Facts already published on this page and points we clarify together.

10documented key facts
7we clarify before bookingwe go through these together, not as stop factors

The project has 10 documented key facts; 7 items are clarified before booking.

We count facts already published on this page. The index does not assess the project’s quality.

At a glance

DeveloperSansiri
LocationBangkok
CategoryCondominium
SubtypeCompleted high-rise urban condominium
ConstructionCompleted
Floors36
Units639
Honest fit

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Your selections are not saved anywhere. This is a decision aid, not an assessment.

Best for: Buyers wanting a completed Sansiri-branded Rama 9 condominium with substantial resale choice.; Residents comfortable walking or taking a short connection to Ramkhamhaeng Airport Rail Link while treating the Orange Line as a future improvement rather than current transport.; Investors who value a deep pool of real sale and rental comparables and are prepared to underwrite an individual unit.; Buyers who want a pool, gym and landscaped common spaces without requiring a boutique low-density building.; may not suit: Buyers who require an operating MRT station directly outside the building today; the Orange Line is not yet open.; Car owners who require a guaranteed dedicated parking bay for every apartment.; Buyers seeking a quiet low-rise scheme with very few residents and minimal common-area traffic..

What we confirm before booking

A short, specific to the project list. We request these from the developer and go through them with you before any payment.

  • the legal entity in the SPA and the payee’s bank details
  • the title format and what is registered against the unit
  • the contractual handover date in the SPA — the page shows the date from the project’s materials
  • the contractual area of the chosen unit, and which basis it is measured on

Disputed and unknown information

This keeps the open points in one place. A missing or disputed fact is not treated as a conclusion.

  • Most major current sources place completion in 2019 and FazWaz specifies December 2019, while some Thai databases show 2018. Completed status is not in dispute; the exact historical handover date requires a primary document.
  • Major property databases use two street numbers on Rama 9 Road, 18 and 1486, for the same project location. Contract documents should follow the address stated on the selected unit title and condominium juristic-person records.
  • A THB 55/sqm monthly common fee and parking at about 40% of unit count are supported by several public project profiles, but the live 2026 fee schedule, special assessments and parking rules should be confirmed with the condominium juristic person.

FAQ

What does a unit in The BASE Garden Rama 9 cost?

1 bedroom — from THB 2.59M in active August–September 2026 resale inventory; 2 bedrooms — around THB 4.5M for roughly 54 sqm listings seen in 2026; verify the specific unit separately. Prices are the lowest the brokerage boards publish, not the developer’s price list — the price and availability of a specific unit are something we go through with you personally.

When is The BASE Garden Rama 9 due for completion?

2019-12. The contractual handover date is fixed in the SPA.

Sources and documents

Official developer and public records used for this page. We publish no outbound links.

  1. Developer's official site checked 13.09.2026
  2. Developer's official site checked 13.09.2026
  3. Government / official registry checked 13.09.2026

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Mark Erometskiy — Thailand property expert

Mark Erometskiy

Thailand property expert (Pattaya, Phuket and Bangkok), co-founder of Bomi Home. Will help with the unit, ownership, stage and terms before you decide.

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Informational, not a public offer or personal investment, legal or tax advice. Price, availability, payment terms and guaranteed-return/buyback conditions are confirmed per unit with the developer and their contract.