Construction Update
Follow the latest construction progress at J Tower 3 as the residential tower continues advancing on schedule. Explore key milestones, ongoing site updates, and the development's journey toward its highly anticipated completion.
Construction at J-Tower 3 Condominium continues to advance rapidly, hitting critical structural milestones as the record-breaking residential tower rises above the Phnom Penh skyline.
Following its official groundbreaking on December 27, 2023, Tanichu Assetment Co., Ltd. has progressed from subterranean foundation engineering into its vertical superstructure phase. As of the end of August 2026, the project has now completed the 2SL, 3SL and 4SL floors, while construction of the 5SL floor has begun and reached 15% completion. This shows that the project is rising steadily towards to highest height.
Structural construction remained the main focus throughout August. Multiple floor slabs were completed during the month, while steel composite, core wall, column, beam and slab works continued across different levels.
The 2SL floor reached 100% completion on August 1, 2026.
This represents a major step forward from the previous construction update, when formwork and rebar placement for the 2SL floor were still underway.
With this level completed, construction teams continued moving upward through the next structural floors.
Construction of the 3SL floor was completed on August 17, 2026.
During this stage, site teams carried out extensive structural works, including core wall formwork and rebar installation, column reinforcement, and related concrete works.
The site photos in the August report show reinforcement and formwork progressing around the tower’s core as the structure continued its vertical development.
Another major milestone followed shortly afterward, with the 4SL floor reaching 100% completion on August 23, 2026.
Construction activities for this level included several important structural stages:
The latest site photos show these works progressing from reinforcement and inspection through to concrete casting and curing of the completed 4SL slab.
Following completion of the 4SL floor, construction teams immediately progressed to the next level.
As of August 25, the 5SL floor had reached 15% completion, making it the project’s current active slab level.
This continued upward movement demonstrates the transition from the project’s completed foundation and basement stages into sustained floor-by-floor superstructure construction.
Structural works are also progressing ahead of the active slab level.
The August construction report shows steel composite installation taking place from 7SL to 9SL, allowing the tower’s structural framework to continue advancing vertically while slab works proceed below.
This simultaneous activity is an important part of the construction sequence as J-Tower 3 begins to rise more visibly above its Tonle Bassac site.
J-Tower 3 has achieved several important structural milestones since construction began:
| Timeline | Milestone |
|---|---|
| December 2023 | Official groundbreaking ceremony held on December 27, beginning the project’s construction journey. |
| April 2025 | Mass piling reached 100% completion. |
| March 2026 | Raft Foundation reached 100% completion on March 6. |
| April 2026 | B1SL was completed on April 2, followed by completion of 1SL on April 30. |
| August 1, 2026 | 2SL floor reached 100% completion. |
| August 17, 2026 | 3SL floor reached 100% completion. |
| August 23, 2026 | 4SL floor reached 100% completion. |
| August 25, 2026 | 5SL reached 15% completion, while steel composite installation progressed from 7SL to 9SL. |
The developer’s August report confirms that the earlier foundation and lower structural milestones remain fully completed.
Construction is expected to continue moving upward during the next reporting period.
According to the developer’s schedule, the next targets are to:
These targets indicate that the project’s immediate focus remains on maintaining vertical structural progress as the tower moves further into its superstructure phase.
Engineered by renowned Japanese developer
, J-Tower 3 is designed to become Cambodia’s tallest luxury residential skyscraper and an iconic architectural landmark in Phnom Penh.
Situated in the sought-after Tonle Bassac neighborhood of the Chamkarmon district, J-Tower 3 positions residents just minutes away from AEON Mall 1, major international embassies, independence monument, and top-tier commercial hubs.
Because real estate appreciation is intrinsically linked to construction milestones, early investors who secured units during the foundation phase are positioned for capital growth as the building climbs higher. With subterranean works completed and above-ground structural framing accelerating, J-Tower 3 continues to deliver long-term value for homeowners and property investors.
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