Buying property à Samui with a dedicated expert

Purchase prices in Koh Samui vary considerably by property type, location, land title, and specification. The following ranges reflect market data for 2024–2025.

• Condominium / apartment (freehold):
  • Entry-level studio units: from approximately 3,880,000 THB (source: Thailand-Property.com, 2025)
  • Standard two-bedroom condos in good locations: 6,000,000–8,000,000 THB (source: Samui-Phangan Real Estate, January 2025)
  • Average price per sqm for apartments: approximately 80,620 THB/sqm as of January 2025 (source: Samui-Phangan Real Estate, 2025)
  • Premium projects in Chaweng, Choeng Mon, and Bophut: prices can exceed 200,000 THB/sqm (source: Colliers Thailand / Khaosod English, September 2025)
• Villa (leasehold or Thai company structure):
  • Entry-level inland villa: from approximately 5,000,000 THB (approx. USD 135,000) (source: Conrad Properties, 2025)
  • Mid-range 3-bedroom villa: median sales price approximately 16,900,000 THB, at a median price per sqm of approximately 80,800 THB/sqm (source: Hinfah, 2025)
  • Luxury 4–5 bedroom sea-view villa: 25,000,000–40,000,000 THB (approx. USD 700,000–1,100,000) (source: Conrad Properties, 2025)
  • Ultra-luxury beachfront estate: upwards of 80,000,000 THB (approx. USD 2,200,000) (source: Conrad Properties, 2025)
• Most units in standard residential projects are currently priced between 60,000–80,000 THB/sqm, while premium projects exceed 200,000 THB/sqm (source: Colliers Thailand, cited by Khaosod English, September 2025).

All prices are indicative and subject to exchange rate fluctuations. Buyers should verify current asking prices with a licensed local agent and confirm the applicable land title and ownership structure before drawing comparisons.

The total acquisition budget for a property in Koh Samui must include the purchase price plus a set of mandatory government fees and taxes payable at the Land Department upon transfer.

• Transfer Fee: 2% of the Land Department's registered (appraised) value. By convention, this is often split 50/50 between buyer and seller, though the split is negotiable and must be defined in the Sale and Purchase Agreement (SPA).
• Specific Business Tax (SBT): 3.3% of the appraised or contracted value (whichever is higher), applicable when the seller has held the property for fewer than five years or is a company. When SBT applies, Stamp Duty is not charged.
• Stamp Duty: 0.5% of the appraised or contracted value (whichever is higher), applicable only when SBT does not apply (i.e., the seller is an individual who has held the property for more than five years). SBT and Stamp Duty are mutually exclusive.
• Withholding Tax (WHT): Borne by the seller. For a corporate seller, WHT is 1% of the appraised or contracted value (whichever is higher). For an individual seller, WHT is calculated on a progressive scale based on the appraised value and the number of years of ownership.
• Legal fees: Typically between 20,000 THB and 50,000 THB for a standard transaction, depending on complexity (source: Horizon Homes Koh Samui).
• Real estate agent commission: In Thailand, the commission is conventionally paid by the seller, not the buyer. Standard rates in tourist zones such as Koh Samui are generally 3–5% of the sale price (source: RE/MAX Thailand; KCAP Realty).
• Annual Land and Buildings Tax (LBT): An ongoing ownership cost. Rates vary by use and declared value; residential properties benefit from lower rates than commercial ones.

As a practical rule of thumb, buyers should budget an additional 3–5% on top of the purchase price to cover their share of transfer fees, legal costs, and any incidental charges. The exact split of transfer costs between buyer and seller is always a matter of contractual negotiation.

Thorough legal and technical due diligence is the most critical step in any Koh Samui property purchase. The following checks must be completed before signing the Sale and Purchase Agreement.

Legal verifications

• Title deed verification: Your lawyer must conduct a search at the Koh Samui Land Office to confirm the authenticity of the Chanote (Nor Sor 4 Jor), verify that the seller's name exactly matches the deed, and confirm that the title is free of encumbrances (mortgages, liens, servitudes, or litigation). The Chanote is the highest-grade land title in Thailand and provides the strongest legal protection (source: Conrad Properties; Forbes & Partners).
• Title grade assessment: Lower-grade titles such as Nor Sor 3 Gor or Nor Sor 3 carry restrictions and require additional caution. A Chanote is strongly preferred for any purchase (source: Buy Samui).
• Ownership structure compliance: For foreigners, the chosen ownership structure (freehold condo, leasehold, or Thai company) must comply with the Land Code Act B.E. 2497, the Condominium Act, and the Foreign Business Act. Your lawyer must confirm the structure is legally sound and not reliant on nominee shareholders.
• Foreign ownership quota (condominiums): Verify with the condominium juristic person that the 49% foreign ownership quota has not been exceeded in the building.
• Zoning and land use: Confirm that the property's intended use complies with local zoning regulations. Koh Samui has strict building height limits (12 metres) and environmental restrictions in hillside and beachfront zones.
• Legal road access: Verify that the property has a legally registered right of access to a public road. Many hillside properties in Koh Samui are accessed via private tracks whose legal status must be confirmed.
• Existing mortgages and charges: Confirm that any existing mortgage registered against the title will be discharged in full before or upon transfer.

Technical verifications

• Building permit (Bai Anuyat): Verify that the structure was built with a valid building permit and that the constructed building matches the approved plans. Unpermitted structures can create significant legal and resale complications.
• Physical boundary inspection: Physically inspect the property to confirm that the boundaries match the title deed. For older deeds, a cadastral survey may be advisable.
• Structural and condition survey: Commission an independent building survey to assess the structural condition, roof, plumbing, electrical systems, and pool (if applicable), particularly for resale properties.
• Utility connections: Confirm that electricity, water, and internet connections are legally established and that there are no outstanding utility debts.
• Outstanding service charges or debts: For condominium purchases, obtain a certificate from the juristic person confirming that all common area fees and sinking fund contributions are paid up to date.

Negotiating a property purchase in Koh Samui requires an understanding of local market dynamics, cultural norms, and the specific characteristics of the property being acquired. The following approach is recommended for foreign buyers.

• Research comparable sales: Before making an offer, gather data on recent transaction prices for comparable properties in the same area. Your agent should provide a comparative market analysis. Understanding whether the asking price is in line with the market — or inflated — is the foundation of any effective negotiation.
• Understand the seller's position: Properties that have been listed for an extended period (luxury sea-view villas can take 150–240 days to sell, source: Bamboo Routes, 2025) may offer more room for negotiation than well-priced condos in high-demand areas, which can sell in 45–80 days.
• Make a written, reasoned offer: Submit your offer in writing through your agent, with a clear justification based on market comparables, property condition, and any identified issues from a preliminary inspection. Avoid verbal-only offers.
• Negotiate beyond price: In addition to the purchase price, negotiation can cover the split of transfer fees, the inclusion of furniture and fittings, the completion timeline, and any remedial works to be carried out before transfer.
• Respect cultural norms: Thai sellers generally respond better to respectful, face-saving negotiation than to aggressive lowball tactics. A reasonable initial offer — typically 5–10% below the asking price for a resale property — is more likely to lead to a productive dialogue than an extreme opening position.
• Use due diligence findings as leverage: If your lawyer's due diligence or a building inspection reveals issues (minor structural defects, outstanding utility bills, permit irregularities), these can legitimately support a price reduction request or a request for the seller to rectify issues before transfer.
• Secure the agreed price in writing: Once a price is agreed, ensure it is immediately reflected in the Reservation Agreement and subsequently in the SPA. Verbal agreements are not enforceable in Thai property transactions.