In Q1 2026, our analysts record average condominium prices on Koh Samui in the range of 85,000 to 145,000 THB per square metre. That translates to roughly USD 2,300 to USD 3,900/m² at current exchange rates. The figure sits 25 to 40 percent below comparable segments on Phuket's western seaboard, which continues to draw investors seeking a lower entry point into Thai freehold property.
We monitor this market district by district. The island currently supports only a handful of condominium projects that meet a credible investment standard - against more than one hundred active projects on Phuket. That constrained supply has two direct consequences: secondary-market liquidity is thin, but intra-district price competition is also limited, which helps support values in established locations.
The key legal point for any foreign buyer is the 49% foreign-ownership quota. A non-Thai national may acquire a condominium unit on full freehold title, provided that the aggregate foreign-owned floor area within that specific building does not exceed 49% of total usable space. Land ownership for villas remains off-limits to foreigners. The available structures are a 30-year leasehold or a Thai company arrangement, both of which introduce additional legal costs and risks that our team documents separately.
Quick answer
- Average condominium price on Koh Samui, 2026: 85,000 to 145,000 THB/m² - Bophut and Chaweng sit at the upper end; Maenam and Lamai at the lower end
- Minimum entry for a completed studio condo (35 to 45 m²): approximately 3.5 to 4.0 million THB
- Net rental yield on condominiums: 4.5 to 6.5% per year, based on our estimates, assuming 65 to 75% occupancy
- Common area maintenance fee: 40 to 80 THB/m²/month, depending on project grade
- Samui Airport (USM) handled approximately 1.8 to 2.0 million passengers in 2025 - a Bangkok Airways monopoly constrains supply and elevates ticket prices
- Travel time from major European hubs to Koh Samui: 14 to 17 hours minimum, with one or two connections via Bangkok or Kuala Lumpur
Options and scenarios
Option A: Freehold condo in Chaweng or Bophut - short-term rental
Chaweng records the highest guest turnover on the island. Proximity to the beach, restaurants, and nightlife drives consistent demand for short-stay rentals (1 to 14 nights). In our data sets, a 40 m² studio in this zone is priced at 5.0 to 6.5 million THB. At a nightly rate of 1,800 to 2,500 THB with 70% annual occupancy, that produces gross annual revenue of approximately 460,000 to 640,000 THB.
A worked calculation for a 40 m² unit in Chaweng, purchase price 5.5 million THB:
- Gross annual revenue (2,200 THB/night x 255 nights): 561,000 THB
- Booking platform commission (15 to 20%): -95,000 THB
- Property management and cleaning (15%): -84,000 THB
- Common area fee (60 THB/m² x 12 months): -28,800 THB
- Insurance and minor repairs: -15,000 THB
- Income tax (estimated at 5% of net revenue under personal ownership): -17,000 THB
- Net income: approximately 321,000 THB
- Net yield: 5.8%
Bophut, particularly around the Fisherman's Village strip, attracts a higher-spending segment - couples and families targeting 60 to 90 m² apartments in the 7 to 12 million THB range. Nightly rates are higher (2,800 to 4,500 THB for a two-bedroom unit), but seasonality is more pronounced. Occupancy in the low season (May to October) can fall to 40 to 50%.
Option B: Condo in Maenam or Lamai - medium-term rental
Maenam, on the island's northern shore, is quieter and draws families and digital nomads. Condominium prices start at 85,000 THB/m², putting a studio at 3.5 to 4.5 million THB. Lamai, on the mid-section of the east coast, offers a similar price range with better access to retail infrastructure.
In these districts, a medium-term rental model (one to six months) works well, particularly across the November to April peak season. Monthly rates run at 25,000 to 40,000 THB for a studio or one-bedroom unit. At nine months of annual occupancy, gross revenue reaches approximately 225,000 to 360,000 THB, and net yield settles in the 4.5 to 5.5% band.
The advantage of this model is lower unit wear and simpler day-to-day management. The trade-off is a smaller ceiling for rate growth compared with the Bophut premium segment.
Option C: Leasehold villa - higher entry cost, wider yield range
For context, a two- to three-bedroom pool villa in Bophut or Maenam costs 12 to 25 million THB on a 30-year leasehold for the land (with full ownership of the structure). Premium holiday rental rates run at 4,000 to 8,000 THB/night, but operating costs scale proportionally: pool maintenance (8,000 to 15,000 THB/month), garden, site management, and higher utility consumption.
Based on our estimates, net yields for villas on Koh Samui fall in the 4.0 to 6.0% range, with wider dispersion than the condo segment due to variable occupancy and unpredictable repair cycles. The additional legal risk of leasehold - renewal after 30 years is not guaranteed under Thai law - is a factor that our analysts weigh heavily in any villa-focused brief.
Comparison table
| Parameter | Condo - Chaweng / Bophut | Condo - Maenam / Lamai | Leasehold Villa |
|---|---|---|---|
| Entry price (THB) | 5.0 to 12.0 million | 3.5 to 6.0 million | 12.0 to 25.0 million |
| Entry price (USD, approx.) | 135,000 to 325,000 | 95,000 to 162,000 | 325,000 to 676,000 |
| Ownership structure | Freehold (49% quota) | Freehold (49% quota) | Leasehold 30 years |
| Net rental yield | 5.0 to 6.5% | 4.5 to 5.5% | 4.0 to 6.0% |
| Rental model | Short-term | Medium-term | Premium holiday |
| Annual occupancy | 65 to 75% | 55 to 70% | 50 to 65% |
| Maintenance cost (THB/month) | 2,400 to 4,800 | 1,600 to 3,200 | 15,000 to 35,000 |
| Resale liquidity | Moderate | Low to moderate | Low |
| Legal risk | Low | Low | Moderate to high |
Risks and mistakes
Bangkok Airways airport monopoly. Samui Airport (USM) is privately owned and operated by Bangkok Airways. As of 2026, one-way fares on the Bangkok to Samui route run at 3,500 to 7,000 THB - three to five times more than a comparable Bangkok to Phuket ticket on low-cost carriers. For investors, this is a direct demand-side risk: higher airfares suppress budget traveller volume and amplify seasonal swings. Proposals for a new public airport on the island have circulated for years but remain at the conceptual stage.
Water and power infrastructure. During the dry season (February to April), freshwater availability on the island can fall short of demand. Some development projects require private storage tanks or filtration systems, adding 200,000 to 500,000 THB to villa build costs. Power interruptions, though less frequent than a decade ago, still occur two to four times per month in the rainy season, making backup generators or UPS units a practical necessity in the premium segment.
Shallow contractor base. Koh Samui hosts far fewer construction firms than Phuket. Based on our estimates, build costs per square metre run 10 to 20% higher than on Phuket at a comparable specification. Completion delays for off-plan projects on Samui frequently extend to 6 to 18 months beyond the contracted date - we track this in our project monitoring database.
Road and transport constraints. The island has one main ring road (Route 4169/4170), approximately 52 km in length. During the peak season (December to January), traffic in Chaweng and on the Chaweng to Bophut corridor can double or triple journey times. There is no public transport network. Tenants and tourists depend entirely on scooters and taxis, which reduces the relative appeal of locations set back from the beach.
Foreign quota status. In small projects of 8 to 20 units, the 49% foreign quota may already be exhausted. Our due diligence checklist always includes a written confirmation of current quota availability from the developer before any deposit is paid.
Tax and cross-border wire requirements. A foreign buyer must transfer purchase funds from abroad in a foreign currency and convert to THB through a Thai bank, documented on a Thor Tor 3 form. Buyers with tax residency in high-reporting jurisdictions should verify their local obligations regarding foreign real estate acquisition and rental income, as these vary significantly by country.
FAQ
Can a foreigner buy a condominium on Koh Samui on full freehold title?
Yes. A non-Thai national can acquire a condominium unit on full freehold ownership, provided the total floor area held by foreign nationals within that building does not exceed 49% of total usable space. Funds must be transferred from overseas in a foreign currency and documented with a Thor Tor 3 bank form.
What is the minimum budget for a freehold condo on Koh Samui in 2026?
Based on our data sets, the lowest entry point for a completed studio unit at an acceptable investment standard is approximately 3.5 to 4.0 million THB, typically in Maenam or Lamai, for a 35 to 45 m² unit.
What net rental yield can I realistically expect from a Koh Samui condo?
Based on our estimates, net yield after all operating costs runs at 4.5 to 6.5% per year, depending on district, rental model, and achieved occupancy rate. Chaweng and Bophut short-term units sit toward the upper end under favourable conditions.
How does Koh Samui compare with Phuket for property investment?
Koh Samui offers a lower entry price (25 to 40% below Phuket's western coast) but comes with a much smaller project pipeline, thinner secondary-market liquidity, and structurally higher air access costs due to the Bangkok Airways monopoly. Phuket Intenational Airport is served by multiple low-cost carriers, which supports a higher and more stable tourist inflow and broader rental demand across districts including Bang Tao, Layan, Kamala, and Rawai.
Is buying off-plan on Koh Samui advisable?
Off-plan purchases typically come with a 10 to 20% discount against completed unit prices. However, we monitor completion delays of 6 to 18 months as a recurring pattern on Koh Samui - the contractor base is thin and permitting can stall. We recommend verifying the developer's delivery track record and the status of all construction permits before committing any deposit.
What are the ongoing maintenance costs for a condo on Koh Samui?
Common area fees run at 40 to 80 THB/m²/month. Additional monthly costs include electricity (2,500 to 5,000 THB with air conditioning in use), water (200 to 600 THB), and internet (600 to 900 THB). Total annual running costs for a 40 m² studio are in the region of 55,000 to 90,000 THB.
How do I get to Koh Samui from Europe?
The standard route is a long-haul flight to Bangkok (approximately 10 to 11 hours from Western Europe), followed by a Bangkok Airways domestic connection to Samui (roughly 1 hour; one-way fare 3,500 to 7,000 THB). An alternative is flying to Surat Thani on a low-cost carrier and continuing by ferry (approximately 1.5 to 2 hours; 400 to 600 THB per person).
Are infrastructure limitations a real factor for rental property on Koh Samui?
Yes, and we consider them material. Freshwater shortages in the dry season, periodic power interruptions during the rainy season, and a single-lane ring road that congests heavily in peak months all affect tenant comfort and operating costs. These factors are more pronounced than on Phuket, and investors should price them into yield projections.
Which district on Koh Samui works best for short-term rental?
Chaweng records the highest guest turnover on the island and suits a short-term rental model. Bophut, particularly near Fisherman's Village, performs well in the upper segment. Maenam and Lamai align more naturally with medium-term rental strategies targeting longer-stay guests and remote workers.
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