If you live in Paris, Munich or Geneva, a villa on Koh Samui sits empty for most of the year. During those weeks, the pool, the garden and the upkeep cost money and earn nothing. Put on the rental market, the same villa starts working for its owner. The island's visitor numbers and rental market data give a clear sense of what it can earn.
An Island That Keeps Getting Busier
Samui welcomes several million visitors a year. According to C9 Hotelworks, the island received 3,541,821 in 2023, split roughly evenly between Thai and international travellers.
Growth has continued since then. Across 2024, Samui airport recorded 2,781,564 passenger arrivals, up 21% on 2023 and well above the pre-pandemic figure of 2,417,246 in 2019. The trend carried into 2025, with 1,127,832 arrivals from January to April, 9% more than the same period of 2024. The sea adds its share too: 50 cruise ships called at the island in 2024, almost twice as many as the year before.
Hotels are feeling the benefit. In 2024, their occupancy rose 12% compared with 2023, and their average nightly rate climbed 9%. Growing demand and rising prices are the first foundation of any rental investment.
European Guests Who Want Villas
In 2024, Europeans accounted for 56% of international arrivals on Samui, led by Germany, the United Kingdom and France. We looked at these travellers in detail in our piece on who really visits Koh Samui.
For an owner, the profile of these guests matters as much as their number. Nobody takes a long-haul flight for two nights, and the average villa stay on the island runs to around four to five nights.
A European family arriving on Samui wants space, a kitchen, a private pool and quiet. That is exactly what a villa provides, and what a standard hotel room does not.
What a Villa Earns on These Numbers
Samui's villa rental market counts around 3,055 properties in 2025. Working from AirDNA data, C9 Hotelworks tracks two indicators that matter to owners.
Occupancy and nightly rate
The first is occupancy. Over 2024, a rental villa was booked on average 56.6% of nights, up from 54.7% in 2023. Seasonality plays its part, with occupancy reaching 76.2% in February and falling to 38.7% in September.
The second is the average nightly rate, excluding taxes and fees: 13,692 baht in 2024.
Multiplying the two gives an order of magnitude. A villa rented at the market's average rate and average occupancy generates around 2.8 million baht in gross revenue a year. Every 10 points of occupancy adds or removes roughly 500,000 baht.
From revenue to gross yield
The next step is to set that revenue against the purchase price. Take a villa priced at 30 million baht, close to the level C9 Hotelworks records for villas of four bedrooms or more (over 28.9 million). With occupancy between 50% and 65%, the gross yield sits in the range of 8 to 11% a year.
"At the market's average rate and 56.6% occupancy, a Samui villa generates around 2.8 million baht in gross revenue a year, a gross yield of roughly 8 to 11% on a 30 million baht villa."
These figures call for some context. This is a gross yield, before platform commissions, management fees, cleaning, electricity, maintenance and tax. It is an estimate built on market averages rather than a promise, since every villa has its own location, size and price.
The weeks an owner spends in the villa are also weeks it is not rented, and revenue falls accordingly.
Why a Managed Residence Makes the Difference
The market is strong, and it is also becoming more competitive. According to C9 Hotelworks, villa rental supply grew 34% in the year to January 2025. In the first quarter of 2025, occupancy rose 5.7 points to 71.5%, while the average nightly rate dropped 11% to 13,012 baht. In this environment, a villa does not rent itself: it needs visibility, strong reviews and flawless service.
An owner living in Europe and renting alone struggles to keep up that standard. Welcoming guests, scheduling cleaners, dealing with a pool pump failure at 11 pm: none of this is easy to handle from another time zone. Quiet months such as September are also when active marketing makes the biggest difference.
A villa inside a residence run by a hotel team solves these issues in one move. This is the model behind THEVA Horizon: 16 pool villas in Lipa Noi, on the west coast, directly below the Ida B Domaine hotel and managed with the group's hotel team.
In practical terms, this changes several things for the owner:
- →An on-site team markets and manages the villa while the owner is away.
- →Gardens, pools and shared areas are maintained to resort standard.
- →The hotel team lists the villas on Booking.com, Agoda, Ctrip and other platforms through the group's agreements.
- →Guests book with confidence, knowing the villa is backed by an operating hotel with a reachable team.
This expertise has a track record. RoomQuest, THEVA's hospitality arm, has operated 4-star hotels in Bangkok, Phuket and Samui for more than twenty years, an approach we explained in our article on why THEVA's hotel model won at the Thailand Real Estate Awards.
Enjoy the Villa, Delegate the Rest
The model rests on a simple idea. The owner enjoys the villa when visiting and keeps access to the hotel's services during each stay. Once the owner leaves, the hotel team takes over and rents the villa out.
That leaves remote oversight, the real concern for a buyer who does not live on the island. After handover, THEVA's owner app shows bookings, the occupancy calendar, revenue, maintenance and reports. The owner sees what is happening at the villa from a phone, without waiting for a monthly email.
Final Thoughts
Demand on Koh Samui is real: the airport passed 2.78 million arrivals in 2024, Europeans make up more than half of international guests, and at average rates and occupancy a villa generates around 2.8 million baht in gross revenue a year, before costs. For an investor living abroad, buying and renting pay off together when the rental side is in professional hands. In a residence such as THEVA Horizon, backed by the Ida B Domaine hotel, the owner keeps the villa for holidays and entrusts the rest of the year to a team that knows the business.
Sources: C9 Hotelworks, Samui Property Market Update, June 2025.
