ONYX Hospitality Group plans to invest more than THB 700 million in a beachfront expansion of Amari Koh Samui on Thailand’s Chaweng Beach. The development, named Amari Samui Resort and Villas, will add more than 65 suites and private pool villas. ONYX expects construction to begin in the first quarter of 2028, with an opening planned for the third quarter of 2029.
Announced on 12 November 2026, the project will add accommodation with more private space at one of Koh Samui’s best-known beach destinations. Guests will have access to a dedicated club lounge, swimming pool, restaurants and leisure facilities, alongside amenities at the existing Amari resort.
Private Pool Villas Extend What Amari Offers on Chaweng
The existing Amari Koh Samui has 193 rooms across three areas, with restaurants, a spa, fitness facilities and family services. The expansion will give couples and families the option of booking a beachfront suite or private pool villa while using the facilities of a larger resort.
The mix could appeal to groups whose members want different things from the same holiday. A family may value a private pool and still want easy access to restaurants. Couples could spend part of the day at the beach or spa and return to quieter accommodation. For travel advisers, the combination creates scope to package different room categories within the same property.
The announcement sets an opening quarter and outlines the facilities. Room rates, individual villa layouts and booking dates will determine how the new accommodation compares with other premium stays on the island.
Chaweng Gives Visitors Reasons to Explore Beyond the Resort
Chaweng Beach offers access to restaurants, shops and entertainment venues, making the resort’s location part of its appeal. Guests can also build outings to Fisherman’s Village or Wat Plai Laem into a beach holiday. Trips to nearby islands give boat operators and guides another opportunity to reach visitors based in Chaweng.
The development could create demand for local contractors, materials and skilled workers during construction. Once it opens, opportunities could extend to food suppliers, drivers and hotel staff. How much spending reaches independent businesses will depend in part on whether guests dine locally, book excursions or use transport outside the resort.
ONYX has yet to announce employment estimates or projected visitor spending. The investment figure describes the development itself. The wider effects will become clearer as construction contracts are awarded and the resort begins welcoming guests.
Thailand’s Tourism Strategy Emphasises Visitor Spending
The development comes as the Tourism Authority of Thailand promotes its 2027 focus on tourism value. The strategy emphasises premium holidays, wellness experiences and greater benefits for local communities. ONYX’s plans fit that direction by adding private accommodation alongside dining and leisure facilities.
For Koh Samui, room supply is one part of the picture. Air connections and the cost of reaching the island will also shape demand for the new suites and villas. A traveller considering a longer tropical break will compare the full trip, including flights, transfers, meals and activities, with other island destinations in Thailand and elsewhere in Asia.
For tour operators, the opening could provide another choice for honeymoons and multigenerational holidays. Whether the new rooms bring additional visitors to Koh Samui or attract guests who would have booked another island resort will depend on demand once reservations open.
More Premium Rooms Are Planned for Koh Samui
Club Med has announced a 303-room Exclusive Collection resort scheduled to open in the second half of 2028. That places its planned debut ahead of Amari’s 2029 expansion. The projects give travellers different types of premium accommodation to compare and add competition for operators selling beach holidays on the island.
For hotels, the distinction may come down to the experience around the room. Private pools, shared facilities and access to Chaweng’s restaurants can each influence where visitors choose to stay. For travel sellers, the relevant details will include how many guests each villa accommodates and which facilities the room rate covers.
The next milestone for Amari is the planned start of construction in early 2028. For travellers and agents considering a 2029 stay, room details and reservation dates will be the first signs that the beachfront expansion is ready to become part of a bookable Koh Samui itinerary.
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