According to Thailand Land Department data for Q1 2026, foreign nationals registered more than 340 condo transactions on Koh Samui over the preceding 12 months, representing roughly 18% year-on-year growth. The island draws buyers with a lower entry threshold than Phuket, but it carries a distinct set of structural constraints that directly affect investment yield and resale liquidity.
Our analysts monitor the Koh Samui market on the ground and observe a clear polarisation: the condo segment is expanding faster than the villa segment, primarily because a condominium is the only property type a foreign national can hold on a freehold basis in their own name under Thai law. Below we work through the economics of that model, district by district.
Quick answer
- A foreign national can acquire a freehold condo on Koh Samui provided the foreign-owned share of the building does not exceed 49% of total residential floor area (Foreign Quota under the Condominium Act 1979, amended 2008)
- The median condo price on the island in 2026 sits in the 3.8-5.5 million THB range (approximately 100,000-145,000 USD at April 2026 exchange rates)
- Net rental yields from short-term letting range from 4.5% to 7.2% per year depending on district and management model
- Transaction costs at purchase total approximately 6-7% of the purchase price, covering transfer fee (2%), specific business tax (3.3%), withholding tax, and legal fees
- Samui Airport (USM) handled roughly 1.8 million passengers per year (Airports of Thailand data, 2025), which represents a structural ceiling on tourism-driven demand
- Based on our estimates from active listing monitoring, resale time for a secondary-market condo on Koh Samui averages 14-22 months
Options and scenarios
Scenario 1: Condo in Chaweng - short-term rental, high turnover
Chaweng is the island's highest-traffic beach and the primary concentration point for leisure tourists. A 45-55 sq m unit in a new-build project here is priced at 4.2-6.0 million THB. Peak-season occupancy (December through April) reaches 80-90%; off-season rates drop to 35-50%.
Full calculation (50 sq m unit, purchase price 4.8 million THB, Chaweng):
- Gross rental income: average nightly rate 1,800 THB, annual occupancy 62% = approximately 226 nights = 406,800 THB/year
- Operating costs: property management at 25-30% = 101,700 THB; common area maintenance fee = 36,000 THB/year (approx. 60 THB per sq m per month); utilities during vacant periods = 18,000 THB; insurance = 8,000 THB; minor repairs = 15,000 THB
- Total costs: 178,700 THB/year
- Net result: 228,100 THB/year, equivalent to 4.75% net yield on purchase price
Chaweng's advantage is rental liquidity; its drawbacks include noise levels and direct price competition from hotel inventory.
Scenario 2: Condo in Bophut / Fisherman's Village - upper mid-market
Bophut and the area around Fisherman's Village command noticeably higher per-square-metre values: 110,000-140,000 THB/sq m versus 85,000-110,000 THB/sq m in Chaweng. This district attracts a premium clientele willing to pay 2,500-3,500 THB per night for a well-appointed unit of 60-80 sq m.
With a purchase price of 7.5 million THB (70 sq m) and an annual occupancy of 55%, gross rental income comes to approximately 503,000 THB/year. After deducting costs (property management at 28%, CAM fees, maintenance), the net result is roughly 310,000 THB/year, or 4.13% net yield. The lower percentage is partially offset by a higher absolute income figure and stronger capital appreciation prospects at resale.
Scenario 3: Condo in Maenam or Lamai - lower entry point
Maenam attracts families and long-stay tenants. Lamai sits in the mid-range for both price and visitor profile. In both districts, 35-50 sq m units can be found at 2.8-4.0 million THB. Annual occupancy is lower (50-58%), but so are management costs, because a meaningful share of owners opts for monthly rental arrangements (15,000-25,000 THB per month).
Under a long-term rental model (40 sq m unit, purchase price 3.2 million THB, monthly rent 18,000 THB, 11 months occupied): gross income 198,000 THB/year, operating costs approximately 52,000 THB/year, net result 146,000 THB/year = 4.56% net yield. This model is operationally simpler and carries lower seasonality risk.
Condo versus villa: a structural comparison
For a complete picture, we set the condo model against villa ownership. A foreign national cannot hold land title in Thailand, which means a villa requires either a leasehold structure (30+30+30 years) or a Thai company vehicle. Both options raise legal costs and reduce long-term ownership certainty beyond the initial 30-year term.
A three-bedroom villa in Bophut (400 sq m plot, 180 sq m built area) is priced at 12-18 million THB. Premium nightly rates reach 8,000-15,000 THB in high season, but annual occupancy rarely exceeds 45-50%. Upkeep costs (pool, garden, security, management) absorb 35-42% of gross income. Net yields fall in the 3.5-5.5% range, with wide variance driven mainly by management quality.
Comparison table
| Parameter | Condo Chaweng | Condo Bophut | Condo Maenam / Lamai | Villa Bophut (leasehold) |
|---|---|---|---|---|
| Ownership form | Freehold (49% quota) | Freehold (49% quota) | Freehold (49% quota) | Leasehold 30+30+30 |
| Typical price (THB) | 4.2-6.0 million | 6.5-9.0 million | 2.8-4.0 million | 12-18 million |
| Price per sq m (THB) | 85,000-110,000 | 110,000-140,000 | 70,000-95,000 | 65,000-100,000 |
| Annual occupancy | 60-65% | 50-58% | 50-58% | 42-50% |
| Net yield (est.) | 4.5-5.5% | 3.8-4.5% | 4.2-5.0% | 3.5-5.5% |
| Typical resale time | 12-18 months | 14-22 months | 16-24 months | 18-30 months |
| Operating costs (% of revenue) | 40-45% | 38-42% | 25-32% | 35-42% |
| Acquisition legal costs | 6-7% | 6-7% | 6-7% | 8-12% |
Risks and mistakes
1. Foreign quota already exhausted. Our on-the-ground monitoring confirms that in several popular projects in Chaweng and Bophut, the 49% foreign quota is already fully allocated. Buyers often discover this only after paying a reservation deposit. Before any funds change hands, the quota status must be verified directly at the Koh Samui Land Office.
2. Bangkok Airways airport monopoly. Samui Airport (USM) is privately owned and operated by Bangkok Airways exclusively. The absence of competition keeps ticket prices 2-4 times higher than on comparable domestic routes. A Bangkok-Samui fare runs 3,500-6,500 THB one way, whereas Bangkok-Phuket on a low-cost carrier costs 1,200-2,500 THB. This directly constrains the budget tourist pool and puts a ceiling on occupancy potential.
3. Water and power infrastructure. During the dry season (February through April), Koh Samui regularly experiences water supply shortfalls. Some newer developments have on-site storage tanks, but older condo buildings may depend on tanker deliveries at 800-1,500 THB per delivery. Power outages during the monsoon season occur 3-8 times per month in affected areas.
4. Limited contractor base. The island has a significantly smaller construction sector than Phuket. Based on our estimates, build costs on Koh Samui run 15-25% higher than on Phuket for comparable specifications, a differential that flows through directly into developer pricing.
5. Foreign funds transfer requirement. To register freehold condo title, a foreign national must remit the full purchase amount from outside Thailand in a foreign currency and obtain a Thor Tor 3 form (Foreign Exchange Transaction Form) from a Thai bank. Transfers denominated in THB or cash payments do not satisfy this requirement. In practical terms, this means wiring funds in USD, EUR, or another qualifying currency from a bank account outside Thailand.
6. Thin secondary market. The Koh Samui resale market is shallow by regional standards. We monitor active listings and observe that condos listed above 6 million THB in Maenam can sit on the market for over two years without a transaction.
7. Currency risk. Over the past five years, the THB/USD exchange rate has moved within a meaningful range. On a 5 million THB purchase, a 5-10% currency shift translates to a material variance in the foreign-currency equivalent of both the investment and its eventual proceeds. This risk is often underweighted in buyer projections.
FAQ
Can a foreign national own a condo on Koh Samui outright?
Yes. Under the Condominium Act 1979, a foreign national can acquire freehold title to a condo unit provided the aggregate foreign-owned share of the building does not exceed 49% of total residential floor area. The purchase funds must be remitted from abroad in a foreign currency, and the buyer must obtain a Thor Tor 3 form from a Thai bank to complete the land office registration.
What does a condo on Koh Samui cost in 2026?
Median prices on the primary market sit at 3.8-5.5 million THB. In the premium segment - Bophut and the Fisherman's Village area - prices reach 9-12 million THB. The most affordable options in Lamai and Maenam start at around 2.5 million THB.
What net rental yield can a condo on Koh Samui generate?
Based on our monitoring data, net yields range from 4.0% to 7.2% per year depending on district and rental model. Short-term letting in Chaweng produces the highest yield figures; long-term monthly rentals in Maenam tend to deliver the most stable income with lower operational complexity.
What transaction costs apply beyond the purchase price?
Total acquisition costs run approximately 6-7% of the purchase price, comprising transfer fee (2%), specific business tax (3.3%), withholding tax (approximately 1%), and legal / registration fees. Cost-sharing between buyer and seller is negotiable and varies by project.
How does Koh Samui compare with Phuket for an international investor?
Koh Samui offers a lower entry price point, but weaker air connectivity (Bangkok Airways monopoly at USM, no low-cost carrier access), a thinner resale market, and higher construction costs. Phuket offers more international direct routes, a larger and more diverse tenant base, stronger secondary market liquidity, and a broader range of freehold projects in districts such as Bang Tao, Layan, Kamala, and Rawai.
What does the condo purchase process look like step by step?
The standard sequence is: reservation payment (50,000-200,000 THB), execution of the sale and purchase agreement, remittance of funds from a foreign bank account in a qualifying foreign currency, receipt of the Thor Tor 3 form from the receiving Thai bank, and title registration at the Land Office. The full process typically takes 30-90 days.
Do I need to declare rental income from a Thai condo in my home country?
Tax obligations depend on the buyer's country of residence. Thailand has double-taxation agreements with a number of countries, under which rental income from Thai property may be taxed in Thailand, with a credit or exemption mechanism applying in the home country. The specific treatment varies by jurisdiction and by individual circumstance. We recommend consulting a qualified tax adviser in both countries before completing a purchase.
Can a foreign buyer obtain a mortgage for a Koh Samui condo?
Thai commercial banks do not as a general rule extend mortgage financing to foreign nationals for residential property. Some developers offer instalment payment plans (for example, a 30/30/40 structure spread across the construction period), but full payment is required before or at title transfer. External financing must come from the buyer's home-country banking relationship, secured against other assets.
How does airport capacity affect property values on Koh Samui?
USM's capacity of approximately 1.8 million passengers per year (AoT data, 2025) functions as a hard ceiling on tourism-driven rental demand. Any expansion of USM or development of an alternative airport on the island would materially alter market dynamics, but as of 2026 no confirmed infrastructure plan for either scenario is in place.
Which Koh Samui districts offer the best resale liquidity?
Based on our listing data, Chaweng condos transact fastest (average 12-18 months), followed by Bophut (14-22 months). Maenam and Lamai see longer average time on market, but lower asking prices. Paradoxically, the lower entry point in those districts can narrow the buyer pool to more price-sensitive purchasers, which does not necessarily accelerate the sale.
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