Koh Samui Real Estate Market Report 2026: Prices, Trends & Investment Outlook

Published by Samui Property Group | March 2026 | Est. read time: 14 minutes

Executive Summary

Koh Samui’s property market has crossed a threshold. What was once an afterthought to Phuket’s more liquid, more publicised investment scene is now drawing capital from European family offices, Chinese high-net-worth individuals, and institutional developers in volumes that are rewriting the island’s economic profile. The primary market stands at THB 30.3 billion across 2,882 units and 117 active projects — figures documented by C9 Hotelworks, the leading independent hospitality and property research firm for the Gulf of Thailand. These numbers reflect not a speculative bubble, but a structural demand story underpinned by record tourism, constrained supply, and transformative infrastructure on the horizon.

This report synthesises publicly available data from institutional research firms, government agencies, and accredited market analysts to give investors the most comprehensive picture of the Koh Samui real estate market heading into 2026. It covers pricing, rental economics, area-by-area dynamics, the legal landscape, infrastructure catalysts, and the 12-month outlook.

For further context, see our companion guides: Can Foreigners Buy Property in Koh Samui? and Koh Samui vs. Phuket: Investment Comparison.

1. Market Overview: A THB 30 Billion Primary Market

Koh Samui’s primary real estate market comprises 2,882 units across 117 active development projects with a combined value of THB 30.3 billion, according to the C9 Hotelworks Samui Property Market Update (June 2025). That figure captures only new-build supply on the primary market; total transaction volumes including secondary market resales are substantially higher.

The market is structured around two main product types: condominiums (52% of supply, 1,513 units) and landed properties/villas (48%, 1,369 units). Geographically, supply is concentrated in the island’s northern and eastern submarkets — Bo Phut alone accounts for 70% of units across 66 projects, with Maret (15%), Mae Nam (9%), and Ang Thong (3%) making up most of the remainder.

The luxury vacation home segment recorded THB 14.8 billion in investment value in H1 2025 alone — a 63.56% increase from H2 2024 — across 52 projects and 597 units, per Colliers International Thailand data reported by The Nation Thailand. The market set a new single-transaction record during the same period: a single villa unit sold for THB 449 million. According to Colliers Thailand as reported by The Nation Thailand, 2025 is shaping up to be the island’s most active year for new villa launches in 15 years.

Key Market Metrics at a Glance

The market structure is heavily weighted toward villas and houses, which account for the majority of premium transactions. Condominiums occupy a structurally distinct niche: entry-level price points, high liquidity for foreign buyers (via freehold title), but a limited supply of mid-to-high quality stock compared to Phuket.

2. Price Analysis: What Buyers Are Actually Paying

2.1 Median Prices by Property Type and Configuration

The headline statistics mask a highly skewed distribution. The C9 Hotelworks Samui Property Market Update (June 2025) provides the most granular publicly available price breakdown based on primary market data:

Condominiums:

• 1-bedroom (40–70 sqm): Median THB 3.5 million
• 2-bedroom (80–110 sqm): Median THB 7.2 million
• Median price per sqm: THB 88,500

Villas and Landed Properties:

• 3-bedroom (250–350 sqm): Median THB 14.9 million
• Median price per sqm: THB 60,600

Based on C9 Hotelworks property market data and observed transaction ranges, the villa market segments broadly into three tiers:

• Standard villas (10–20M THB): 2–3 bedroom pool villas; the C9 Hotelworks median of THB 14.9 million for a 3-bedroom villa anchors this segment
• Premium villas (20–50M THB): 3–5 bedroom sea-view properties in established submarkets
• Luxury villas (50M+ THB): Beachfront or ultra-prime hillside estates; the segment ceiling was defined by a THB 449 million record single-unit sale in 2025, per Colliers International Thailand

The villa mean is materially distorted by a small number of ultra-luxury estates priced between THB 200–400 million. The median of THB 14.9 million for a 3-bedroom villa is the more operationally useful figure for most investors — it represents a well-finished pool villa in a non-beachfront but attractive garden or hillside setting.

The median price per square metre of THB 88,500 for condominiums and THB 60,600 for villas from the C9 Hotelworks property survey compares favourably to Bangkok’s premium districts (THB 250,000–315,000/sqm for downtown launches, per CBRE Thailand as cited by The Nation Thailand) and to Phuket’s villa market, where the median sits around THB 70,000/sqm, per Knight Frank Thailand’s Phuket Villa & Condominium Market Review.

2.2 What Each Price Band Delivers

Understanding price-to-product is essential for underwriting returns:

Source: C9 Hotelworks Samui Property Market Update (June 2025); Colliers International Thailand

3. Price by Area: The Geography of Value

Location remains the single most important variable after property type. The northeast corridor — Chaweng, Chaweng Noi, Choeng Mon, Bophut, and Plai Laem — commands the premium tier, underpinned by proximity to the island’s best beaches, restaurants, and the airport. The north coast (Maenam, Bang Por) offers measurably lower entry points with growing demand, while the south and west remain value plays.

Area Price Guide (Villas, 3–4 Bedrooms)

Source: C9 Hotelworks Samui Property Market Update (June 2025); AirROI Ko Samui District Data (2025)

North coast data point: The Maenam and Bang Por sub-markets on the island’s north coast offer the most compelling value proposition for entry-level investors. C9 Hotelworks data shows Maenam accounting for 9% of primary market supply but 12% of total value — a premium-to-supply ratio that indicates above-average asset quality at below-average entry prices, with valuations running 30–40% lower than east coast alternatives. The area gained significant international visibility as a filming location for the HBO series The White Lotus Season 3, which premiered in early 2025 — a catalyst that property professionals report has meaningfully increased buyer enquiries across the north coast corridor.

Chaweng Noi, together with Bophut and Choeng Mon, forms the island’s “Gold Triangle” — the submarket cluster most likely to outperform on capital appreciation through 2026, particularly for sea-view villas in the THB 30–60M range. AirROI data documents Baan Chaweng Noi generating THB ~119,000/month in average STR revenue across 337 active listings, with Choeng Mon at THB ~93,000/month across 208 listings.

Note: AirROI data reflects Airbnb-channel listings only. All-channel occupancy — including Booking.com, Agoda, and direct bookings — is materially higher, as reported by C9 Hotelworks, which recorded 71.5% island-wide villa occupancy in Q1 2025 across all channels (up 5.7 percentage points year-on-year). Submarket revenue figures from AirROI remain useful for relative comparison but will understate absolute performance versus all-channel benchmarks.

For a deeper area-by-area breakdown, see our guides to Bophut Fisherman’s Village Investment and Chaweng Noi Investment Analysis.

4. Tourism & Demand Fundamentals

Real estate values in Koh Samui are structurally linked to tourism performance. The island’s rental market is almost entirely holiday-let driven; occupancy and nightly rates directly determine yield calculations.

4.1 Airport Arrivals

Samui International Airport recorded 2,781,564 total arrivals in 2024 — a 21% year-on-year increase that also exceeded the pre-pandemic 2019 level of 2,417,246, per the C9 Hotelworks Samui Hotel & Tourism Market Review (June 2025). From January to April 2025, the airport welcomed 1,127,832 passenger arrivals, reflecting a further 9% increase versus the same period in 2024. Growth has been sustained, not a single-year rebound.

4.2 Cruise Tourism

Koh Samui ranked among the top three busiest cruise ports in Thailand (alongside Patong Bay/Phuket and Laem Chabang) in 2024. The island received 50 cruise liners carrying 94,681 passengers — nearly double the 2023 figure of 32 vessels and 51,227 passengers. From January to April 2025, 35 cruise ships brought 65,792 passengers to the island, a further 6% year-on-year increase, per C9 Hotelworks. The Tourism Authority of Thailand, in partnership with StarDream Cruises, launched a new Laem Chabang–Koh Samui–Singapore route in April 2025, and is actively positioning Samui as a premier cruise destination. A new dedicated cruise terminal is expected to open by 2032, capable of accommodating up to 120 cruise landings and 180,000 visitors annually.

4.3 Source Market Composition

Source: C9 Hotelworks Samui Hotel & Tourism Market Review (June 2025)

European travelers, particularly from Germany, the UK, and France, represent the dominant buyer community for Koh Samui luxury residential property. Colliers International Thailand confirms that foreign investors from Europe, Russia, and China are the primary driving force in the luxury segment, with foreign buyers accounting for 85–90% of villa transactions.

4.4 Hotel Sector Indicators

Hotel occupancy on Koh Samui increased by 12% in 2024 versus 2023, peaking in January 2025 with an 8% year-on-year uplift. Average Daily Rates (ADR) grew 9% in 2024, with ADR remaining above prior-year levels through May 2025, including a 21% ADR surge in April 2025, per C9 Hotelworks. The average length of stay on island is 4–5 nights. The hotel supply base of 634 accommodation establishments and 24,188 total keys (as of 2024) has a five-year post-pandemic CAGR of just 1%, constraining supply even as demand accelerates. All of these metrics feed directly into villa rental revenue models.

5. Rental Yields: The Cash-Flow Case

Koh Samui’s rental yield profile is one of the strongest among comparable resort markets in Southeast Asia.

5.1 Gross and Net Yields

Source: C9 Hotelworks Samui Property Market Update (June 2025); Airbtics Koh Samui Market Data (2026); AirROI Ko Samui District Data (2025)

Disclaimer: Yield data is compiled from published market surveys and represents ranges across different property types and locations. Individual property performance will vary based on management quality, specification, location, and market conditions. Past performance does not guarantee future results.

5.2 Nightly Rental Rates by Villa Type

Source: Airbtics Koh Samui Market Data (2026); AirROI Ko Samui District Data (2025); C9 Hotelworks Villa Rental Market Update (2024)

A note on yield dynamics: The C9 Hotelworks Property Market Update documents that the average nightly rental rate declined to THB 13,012 in Q1 2025 — an 11% decrease versus Q1 2024 — as new villa supply (up 34% year-on-year) entered the market. This rate compression is concentrated in undifferentiated stock. Notably, the same data confirms that occupancy rose by 5.7 percentage points despite the supply surge, reaching 71.5% in Q1 2025 — evidence of genuine demand absorption. Airbtics market data (as of January 2026) shows median short-term rental revenue running at THB 1.26 million per year (+10.1% year-on-year), with a median occupancy of 66% across the broader market. Properties with genuine sea views, premium management, strong channel distribution, and verifiable guest reviews are outperforming these averages. Yield dilution is a function of management quality as much as market conditions.

For an in-depth analysis, see our guide on Koh Samui Rental Yields.

6. Capital Appreciation: The Growth Story

6.1 Historical Performance

Prime, sea-view luxury villas in Koh Samui have historically delivered annual capital appreciation of 5% to 12% over the past decade — a range consistent with the structural supply constraints and record tourism growth documented by C9 Hotelworks and the 63.56% H1 2025 luxury investment value surge reported by Colliers International Thailand via The Nation Thailand. Sea-view and beachfront assets have outperformed this range, with annual appreciation at approximately 8–12% in the premium segment. The Nation Thailand, citing KKP Bank research, confirms that Surat Thani province (Koh Samui) is explicitly identified as a growth market, with foreign buyer transfers surging 220% year-on-year — the strongest of any Thai province tracked — underlining the structural demand story.

The primary engine of value is land scarcity. Koh Samui enforces strict building height restrictions and density controls, particularly on hillsides and near coastlines. As prime land is absorbed, the barrier to entry for comparable new-build supply rises — preserving and enhancing the value of existing stock. This dynamic has supported consistent appreciation even during periods of broader Thai market softness.

6.2 2026 Capital Appreciation Forecast

Source: C9 Hotelworks Samui Property Market Update (June 2025); The Nation Thailand (January 2026)

The 7%–9% forecast for the Gold Triangle is supported by three converging factors: approaching airport expansion completion (2027), the 99-year leasehold legislative progress, and the continued pricing arbitrage versus Phuket drawing additional demand.

7. Infrastructure Catalysts: The Three Developments That Matter

Infrastructure is to resort property markets what earnings catalysts are to equities — the events that compress the timeline between current value and intrinsic value. Koh Samui has three material catalysts in play simultaneously.

7.1 Samui Airport Expansion — THB 1.5 Billion

Bangkok Airways has committed THB 1.5 billion (part of a total THB 2.3 billion programme across Samui and Trat airports) to expanding Samui International Airport, with construction commenced in 2025 and completion targeted for 2027, per AirGuide Business and confirmed by C9 Hotelworks.

Scope of works:

• Boarding gates: 7 → 11
• Check-in counters: +10 new, with CUSS self-service kiosk technology
• Retail/commercial space: 1,800 m² → 4,000 m²
• Annual passenger capacity: approximately 2 million → 4 million by 2027

The “accessibility gap” between Samui and Phuket has been a persistent discount factor in valuation models. When this gap narrows materially — historically the pattern in comparable markets — property values tend to re-rate. The 2027 completion window represents the practical opportunity horizon: investors acquiring in 2026 are positioned ahead of that re-pricing event.

7.2 Samui–Mainland Sea Bridge — THB 55 Billion

The Expressway Authority of Thailand (EXAT) is conducting feasibility and Environmental Impact Assessment (EIA) studies on a 37.41-kilometre cable-stayed bridge connecting Don Sak district (Surat Thani) to Taling Ngam beach on Koh Samui’s west coast. The project carries an estimated cost of THB 55 billion, per C9 Hotelworks.

The bridge would eliminate Koh Samui’s geographic isolation — currently accessible only by air or ferry — and has been explicitly described by Thai authorities as a project that would fundamentally change the economic geography of the South. For property values, the relevant dynamic is not the opening date but the approval date. A confirmed go-ahead, even years before completion, has historically been sufficient to trigger a meaningful re-rating of accessible areas.

7.3 Cruise Terminal Development

A dedicated cruise terminal capable of accommodating up to 120 cruise landings and 180,000 passengers annually is expected to open by 2032, with construction commencing 2029, per C9 Hotelworks. This would institutionalise Koh Samui’s position as a Southeast Asian cruise hub and further diversify its visitor base beyond the airport-dependent tourist profile.

8. Koh Samui vs. Phuket: The Price Arbitrage

Koh Samui trades at a meaningful discount to Phuket for comparable assets — a gap that investors either view as a risk premium or an opportunity depending on their conviction about the island’s long-term trajectory.

Price Comparison: Samui vs. Phuket (2025)

Sources: C9 Hotelworks; Knight Frank Thailand Phuket Villa Market Review (2024); Colliers International Thailand

The rising cost of Phuket real estate has actively driven foreign buyers toward Koh Samui, where comparable villas remain meaningfully cheaper on a per-sqm and absolute basis. This migration is most visible at the THB 15–40 million mid-luxury tier, where Phuket has largely exhausted affordable inventory. Per Knight Frank Thailand’s Phuket market data, villa prices in Phuket range from THB 5.9 million to THB 255 million, with Bang Tao featuring the island’s highest-priced stock — prime locations that set the ceiling Koh Samui has yet to reach. For investors seeking the best remaining price-to-quality ratio in Thai resort real estate, Samui represents the dominant value argument.

What Phuket still offers that Samui doesn’t: more abundant freehold condominium supply (38,276 total units vs. Samui’s nascent condo market), a broader selection of branded residences, a larger and more liquid secondary market, and superior international school infrastructure. These remain genuine differentiators for buyers with school-age children or a strong preference for established developer brands. For a detailed comparison, see our guide Koh Samui vs. Phuket: Investment Comparison.

9. Foreign Buyer Trends and Market Access

9.1 Transaction Volume Surge

Foreign buyer activity in the broader Thai property market — and in Koh Samui specifically — has accelerated materially. The number of condominium transfers to foreign nationals across Thailand reached 14,449 units in 2023, a 25% increase from the prior year, with total value surging 23.5% to THB 73.16 billion, surpassing pre-pandemic levels, per The Nation Thailand reporting Real Estate Information Center (REIC) data. Chinese buyers accounted for 45.8% of all foreign condo purchases (6,614 units), followed by Russian (1,260 units, 8.7%) and American buyers (631 units, 4.4%).

On Koh Samui specifically, Colliers International Thailand confirms that foreign investors — particularly from Europe, Russia, and China — are the primary driving force in the luxury segment, accounting for 85–90% of villa transactions. Foreign buyer transfers in Surat Thani province (encompassing Koh Samui) surged 220% year-on-year, the highest of any Thai province, per The Nation Thailand citing KKP Bank research.

9.2 The Condo Quota Proposal

Thailand’s current Condominium Act permits foreign nationals to own up to 49% of the total unit area in any given building on a freehold basis. Thailand’s Interior Minister Anutin Charnvirakul has proposed increasing this cap to 75%, per The Nation Thailand. If enacted, this would significantly expand the universe of buildings in which foreign buyers can acquire freehold title — a structural demand catalyst, particularly for Koh Samui where available freehold condo supply is already limited.

Status as of Q1 2026: The proposal was submitted to Cabinet for consideration but was subsequently shelved in September 2025, per The Nation Thailand. The 49% cap remains operative law. Investors should monitor for reintroduction, but should not factor this into current underwriting. For a full explanation of foreign ownership structures, see Koh Samui Ownership Structures Explained.

10. The Legal Landscape: What 2025 Changed

10.1 The Supreme Court Ruling (Case No. 4655/2566, March 2025)

In March 2025, the Thai Supreme Court issued a landmark ruling that closed a widely-used loophole in the foreign property market. The court held that pre-agreed lease renewal clauses — the “30+30+30” or “30+30” structures historically marketed to foreign buyers — are void and unenforceable under Thailand’s Civil and Commercial Code, per Formichella & Sritawat Attorneys at Law and Siam Legal International.

Section 540 of the Civil and Commercial Code limits land leases to a maximum of 30 years. The ruling confirmed that any clause purporting to extend this beyond 30 years — regardless of whether payment has been made — is not legally binding. Lessees who relied on such clauses to secure 60- or 90-year tenure may find themselves without enforceable grounds for renewal.

What this means for buyers:

• The initial 30-year registered lease remains fully valid
• Any renewal beyond year 30 is now at the landowner’s discretion, not a legal right
• Buyers should avoid projects marketing “automatic 60-year” or “90-year” leaseholds under existing law
• Only a new act of Parliament can create legally binding tenure beyond 30 years

For a full analysis of the ruling and its practical implications, see our Koh Samui Ownership Structures Explained guide.

10.2 The 99-Year Leasehold Proposal

In direct response to the Supreme Court ruling and Thailand’s broader strategy to attract long-term foreign investment, the Thai government has been actively progressing a proposal to permit 99-year leaseholds for non-agricultural land. The Interior Ministry’s simultaneous proposal — covering both the condo quota increase to 75% and the 99-year leasehold extension — was publicly announced by Interior Minister Anutin Charnvirakul, per The Nation Thailand.

Key terms of the proposal:

• Apply to residential, commercial, and industrial land (agricultural excluded)
• Permit leases of up to 99 years with Land Department registration
• Allow lessees to mortgage, transfer, or inherit the lease during the term
• Land reverts to Thai ownership at the conclusion of the 99-year term
• Potentially available to both Thai and foreign investors under a regulated structure

Status as of Q1 2026: The proposal has not yet been enacted into law. The 30-year maximum remains the operative legal framework. The 99-year leasehold remains a positive optionality factor for the market — not a current legal right — but one that could materially re-price leasehold villa values if enacted.

The practical implication: If enacted, a 99-year leasehold would give foreign buyers genuine intergenerational tenure security — eliminating the renewal risk that has historically applied a structural discount to leasehold villa values. It would narrow one of the key differentiators between Thai and international resort markets.

11. The 2026 Outlook: 12-Month Investment View

11.1 Demand Drivers in Place

The fundamental demand thesis for 2026 is intact: continued tourism growth, a foreign buyer community rotating away from Phuket on price, and legislative tailwinds in the form of the condo quota and leasehold reform proposals. The H1 2025 luxury market data — 63.56% growth in investment value over H2 2024 — suggests that sophisticated investors have been front-running the infrastructure catalysts and legal reform narrative. The 220% surge in foreign buyer transfers in Surat Thani province represents the clearest quantitative signal that Koh Samui has entered a new phase of international capital inflows.

11.2 Supply Dynamics

The villa market faces a nuanced supply picture. New villa rental inventory grew 34% year-on-year in early 2025, which has modestly compressed average nightly rates in the undifferentiated mid-market (down approximately 11% to THB 13,012/night in Q1 2025, per C9 Hotelworks). However, occupancy has held at 71.5% in Q1 2025 despite this supply increase — evidence of genuine demand absorption. The condominium market shows even tighter conditions: absorption rates reached 79.8% in 2025, with certain projects achieving complete sellouts within nine months of launch, per Colliers International Thailand.

11.3 What to Watch in 2026

11.4 Investment Positioning

Based on 2026 market conditions, the highest-conviction positioning is:

1. Mid-luxury sea-view villas (THB 15–40M) in the Gold Triangle (Chaweng Noi, Bophut, Choeng Mon) — offering the optimal combination of documented rental yield and near-term capital appreciation. AirROI data places Baan Chaweng Noi STR revenue at THB ~119,000/month; C9 Hotelworks documents the supply constraints and tourism fundamentals underpinning the 7–9% appreciation forecast for the corridor.
2. Value-buy north coast (Maenam/Bang Por) — lower entry point, demonstrated demand, and near-term beneficiary of international visibility. Documented ROI on specific villas reaches 9% annually, with appreciation optionality at 30–40% entry discount versus east coast equivalents.
3. Freehold condominiums (THB 3.5–7.5M) — limited supply, unambiguous foreign ownership structure, high absorption rates (79.8% market-wide). Liquidity hedge within a portfolio.

Frequently Asked Questions

Q1: Is Koh Samui real estate a good investment in 2026?

Based on current data, the fundamentals support a constructive view. The market is underpinned by record tourist arrivals (2.78M in 2024, +21% YoY), strong rental demand (71.5% Q1 occupancy, net yields of 4.5–8% for well-managed villas), and multiple infrastructure catalysts including the THB 1.5 billion airport expansion scheduled for completion in 2027. Capital appreciation in prime villa zones has historically run 5–12% annually, with 7–9% forecast for 2026 in the Gold Triangle. The key risks are supply growth in the undifferentiated villa market, nightly rate compression, exchange rate movements for non-THB buyers, and legislative uncertainty around leasehold reform timing. Past performance does not guarantee future results.

Q2: Can foreigners buy property freehold in Koh Samui?

Under current Thai law, foreign nationals cannot own land freehold. Foreigners can own condominium units freehold, subject to the 49% building quota (proposals to increase to 75% have been discussed but not enacted). For villas and houses, the primary foreign ownership structure is a registered 30-year leasehold — the Thai Supreme Court’s March 2025 ruling confirmed that pre-agreed renewals beyond 30 years are not legally enforceable under current law. The proposed 99-year leasehold reform, if enacted, would materially improve the legal framework for foreign villa buyers. See Can Foreigners Buy Property in Koh Samui? for a complete guide.

Q3: What are typical rental yields for Koh Samui villas?

Gross rental yields for professionally managed sea-view villas in prime areas (Chaweng Noi, Bophut, Choeng Mon) typically run 6–12% per annum. Airbtics data (January 2026) shows median annual STR revenue of THB 1.26 million at 66% occupancy; applied to the C9 Hotelworks median 3-bedroom villa price of THB 14.9 million, this implies a gross yield of approximately 8.5%. After management fees (20–25%), maintenance, and taxes, net yields of 4.5–8% are achievable. The range is wide because management quality, property specification, location, and pricing strategy each materially affect outcomes. Nightly rates for mid-range luxury villas (3–4 bed, sea views, private pool) range from THB 8,000–20,000 during shoulder season to THB 20,000–55,000 at peak. See our full Koh Samui Rental Yields guide for detailed analysis.

Q4: How do property prices in Koh Samui compare to Phuket?

Koh Samui currently offers a meaningful price discount to Phuket for comparable villa product — sea-view villas that start at THB 15 million in Samui typically begin at THB 30 million or more in Phuket. On a per-sqm basis, the C9 Hotelworks data places Koh Samui villa medians at THB 60,600/sqm versus approximately THB 70,000/sqm in Phuket (Knight Frank). This discount reflects Samui’s less mature market, lower land prices, and limited branded developer presence — but also represents upside potential as the market matures. See Koh Samui vs. Phuket: Investment Comparison for our full analysis.

Q5: What is the status of the proposed Koh Samui–mainland bridge?

The Expressway Authority of Thailand (EXAT) is conducting a feasibility study and Environmental Impact Assessment on a 37.41-kilometre cable-stayed bridge estimated at THB 55 billion. Feasibility and EIA completion are targeted for 2026, with construction projected to start in 2029 and the bridge opening in 2033–2037 (timelines vary across official sources). No final government approval has yet been given. The bridge is a significant long-term catalyst but is not a near-term certainty.

Q6: What did the Thai Supreme Court rule about leases in 2025?

In March 2025 (Case No. 4655/2566), the Thai Supreme Court held that pre-agreed automatic renewal clauses in lease agreements — the “30+30+30” or “30+30” structures that developers historically marketed as long-term tenure solutions for foreign buyers — are void and unenforceable. The maximum legally registered lease term remains 30 years. Any renewal beyond this requires a new agreement at the landowner’s discretion. This makes the proposed 99-year leasehold legislation — currently in draft — all the more consequential for the market.

Q7: Which areas of Koh Samui offer the best investment value in 2026?

For rental yield focus: the Gold Triangle of Chaweng Noi, Bophut, and Choeng Mon, where proximity to amenities, beaches, and the airport maximises occupancy and documented yields reach 7.9–12% in select locations. For capital appreciation and value: Maenam and Bang Por on the north coast, where entry prices are 30–40% lower than east coast equivalents, demand is growing (boosted in part by the White Lotus filming effect), and documented ROI on specific villas reaches 9%. For long-term speculative upside: the west coast (Lipa Noi, Taling Ngam) benefits most if the bridge project advances. See our area guides: Bophut Fisherman’s Village Investment and Chaweng Noi Investment Analysis.

Contact Samui Property Group

Samui Property Group (SPG) is a boutique real estate advisory firm specialising in investment-grade property on Koh Samui. Our team provides independent market analysis, acquisition support, leasehold structuring guidance, and property management introductions for international investors.

SPG’s curated portfolio spans villas, condos, and land across every key Koh Samui neighbourhood — from the Gold Triangle’s premium sea-view villas to value opportunities on the north coast and land for development. Whether you are evaluating your first acquisition or managing an existing portfolio, we offer the market depth and discretion that complex transactions require. All client relationships begin with a confidential consultation — no obligation, no pressure.

Contact Samui Property Group to discuss your investment goals at samuipropertygroup.com.

Market data is compiled from published sources including C9 Hotelworks, Colliers International Thailand, Knight Frank Thailand, Airbtics, AirROI, The Nation Thailand, and other institutional sources. All data is for informational purposes only. Past performance does not guarantee future results. Yield and return projections are estimates based on market research and will vary depending on individual property characteristics, management quality, and market conditions. Consult qualified legal and financial advisors before making investment decisions.

Sources

1. C9 Hotelworks — Samui Hotel & Tourism Market Review (June 2025): https://c9hotelworks.com/wp-content/uploads/2025/06/Samui-Hotel-Tourism-Market-Review_June-2025.pdf
2. C9 Hotelworks — Samui Property Market Update (June 2025): https://c9hotelworks.com/wp-content/uploads/2025/06/Samui-Property-Market-Update-June-2025.pdf
3. Colliers International Thailand — Koh Samui Luxury Property Market H1 2025 (via Thailand PRD, September 2025): https://www.facebook.com/thailandprd/posts/koh-samui-one-of-thailands-top-tourism-destinations-has-seen-a-surge-in-luxury-p/1304247858404688/
4. The Nation Thailand — Koh Samui re-emerges as global hotspot for luxury real estate (via Colliers Thailand, September 2025): https://www.facebook.com/TheNationThailand/posts/koh-samui-has-re-emerged-as-a-global-hotspot-for-luxury-real-estate-with-strong-/1215341917285807/
5. The Nation Thailand — Thailand’s Property Market 2025: Navigating Crisis (January 2026): https://www.nationthailand.com/business/property/40060756
6. The Nation Thailand — REIC records 25% jump in foreign condo purchases in 2023 (April 2024): https://www.nationthailand.com/business/property/40036969
7. The Nation Thailand — Interior Ministry to propose increase in foreign ownership ratio in condominiums (June 2024): https://www.nationthailand.com/news/policy/40039026
8. Airbtics — Koh Samui Airbnb Data 2026: Revenue, Occupancy & ROI Insights (January 2026): https://airbtics.com/annual-airbnb-revenue-in-koh-samui-thailand/
9. AirROI — Ko Samui District Short-Term Rental Market Report (2025): https://www.airroi.com/report/world/thailand/surat-thani/ko-samui-district
10. Knight Frank Thailand — Phuket Villa & Condominium Market Review (2024): https://content.knightfrank.com/research/2838/documents/en/phuket-villa-condominium-market-2024-12106.pdf
11. Formichella & Sritawat Attorneys at Law — Thai Supreme Court Shuts Door on Long-Term Lease Loopholes (June 2025): https://fosrlaw.com/2025/supreme-court-lease/
12. Siam Legal International — Supreme Court Ruling on Long-Term Leases in Thailand (March 2026): https://www.siam-legal.com/thailand-law/supreme-court-ruling-on-long-term-leases-in-thailand/
13. AirGuide Business — Bangkok Airways Invests $69M in Koh Samui and Trat Airport Expansions (September 2024): https://airguide.info/bangkok-airways-invests-69m-in-koh-samui-and-trat-airport-expansions/
14. C9 Hotelworks — Samui Villa Rental Market Update (June 2024): https://www.c9hotelworks.com/wp-content/uploads/2024/06/202406-samui-villa-rental-market-update.pdf
15. Asia Property Awards — Koh Samui’s THB 30.3B residential market: how the island is evolving beyond luxury villas (reporting C9 Hotelworks Samui Property Market Review 2025): https://www.asiapropertyawards.com/en/koh-samuis-822m-residential-market-how-the-island-is-evolving-beyond-luxury-villas/