Buying Land in Koh Samui

Buying in Koh Samui

How to find, check and secure a plot on Koh Samui as a foreign buyer: title deeds, access, slope and coastal rules, utilities, the ownership structure, costs and building your own home.

By Samui Real Estate, Property ConsultantLast reviewed November 20268 min read

Buying land and building your own home is one of the most rewarding ways to own on Koh Samui: you choose the view and design exactly what you want. It’s also the purchase where the most can go wrong. Many of the island’s best plots are on steep hillsides, reached by private roads, with utilities that need to be brought in. This guide explains how a careful buyer finds, checks and secures land on Samui. To see current plots, browse land for sale in Koh Samui.

General information, not legal advice. Building rules on Koh Samui are set by local regulations that change from time to time. Have every plot checked by an independent property lawyer.

How a foreigner holds land

Foreigners can’t be registered as owners of land in Thailand. The standard structure for buying a plot on Samui is:

1. A registered 30-year lease of the land, recorded on the title deed.
2. A superficies over the land, so that the house you build is legally yours.
3. A building permit for the house in your name.

Where needed, add a registered servitude for road access and utilities across neighbouring land. Read foreign property ownership, freehold vs leasehold and usufruct, superficies and servitudes.

Title deeds

Document	What it means	Can it be sold?	Our view
Chanote (Nor Sor 4 Jor)	Full title, boundaries GPS-surveyed and marked	Yes	Preferred
Nor Sor 3 Gor	Confirmed right of use; surveyed from aerial photos	Yes	Acceptable with checks; often upgradeable
Nor Sor 3	Right of use; less precise boundaries	Yes, after a 30-day public notice	Higher risk
Sor Kor 1	A claim to possession, not a title	Not in the normal way	Avoid
Sor Por Kor 4-01	Agricultural reform land	No: inheritance only	Avoid
Por Bor Tor 5	A tax receipt	No	Not a title

Land measurements and price

Land in Thailand is measured in:

• rai = 1,600 m²
• ngan = 400 m² (four ngan make a rai)
• square wah = 4 m² (100 square wah make a ngan)

A title might read “1-2-50”, meaning 1 rai, 2 ngan and 50 square wah, about 2,600 m². Prices on Samui are usually quoted per rai, or per square wah for smaller plots. Price per rai varies hugely: a flat beachfront plot and a steep inland hillside plot can differ by a factor of ten or more.

What decides what you can build

Slope and elevation

Koh Samui restricts building on steep slopes and at higher elevations, to protect the hills from erosion and landslides. On steeper land, the permitted building area shrinks or building isn’t allowed at all, and the land above certain heights is protected.

Height and coastal set-back

Building height is limited across the island, which is why most condos are low-rise. Near the coastline, the limits are tighter, and some construction close to the shore isn’t allowed.

Zoning

Samui’s town plan divides the island into zones that control what can be built (homes, hotels, commercial) and how much of a plot can be covered.

Access and utilities

• Road access. The plot should front a public road, or have a registered servitude over the road that reaches it. Ask how the road is maintained and whether it’s passable after heavy rain.
• Electricity. Check the nearest connection point and its capacity. Bringing power up a hillside, or upgrading the supply for a large villa, can be a significant cost.
• Water. Some areas have mains water; many rely on wells or delivered water, especially in the dry season. Check the supply and whether a well permit is needed.
• Internet. Fibre is widespread, but not on every hillside.

Checking the plot

• The title is a Chanote or Nor Sor 3 Gor, checked front and back at the Land Office.
• No mortgages, leases, rights or seizures you don’t know about.
• Registered legal access to a public road.
• A boundary survey matches the title and the markers on the ground.
• The slope, height, set-back and zoning rules allow what you want to build.
• Electricity and water are available, with a realistic cost to connect.
• No signs of erosion, flooding or unstable ground.
• For plots in a larger estate: proper subdivision and clear rules on shared roads and fees.

See the full checklist in property due diligence in Thailand.

Buying land in a villa estate

Many plots on Samui are sold as part of an estate, with a shared road, security and sometimes a pool. Check that each plot has its own title deed or that the project has a land allocation permit where the law requires one, who owns and maintains the common areas, and what the estate fees and design rules are.

The buying process

1. Shortlist plots and check the basic rules with an architect before you fall in love with a view.
2. Agree terms and reserve, with a deposit refundable if due diligence fails.
3. Due diligence and survey. Land Office search, boundary survey, access, utilities and building rules.
4. Sign the lease, superficies and any servitude, drafted or reviewed by your own lawyer.
5. Register at the Land Office. Fees are paid and the rights are recorded on the title deed.

What it costs

• The land lease: usually paid in full up front, with 1% registration fee and 0.1% stamp duty on the total rent.
• Superficies and servitude registration fees.
• Legal fees and a survey.
• Land and Buildings Tax once you own it. Vacant land is taxed at a higher rate than land with a home on it, so plan your build timing.

See property taxes and transfer fees.

Building your home

1. Appoint a licensed architect and engineer who know Samui’s rules, especially for hillside foundations, retaining walls and drainage.
2. Apply for a building permit from the local municipality, with the plans signed by licensed professionals.
3. Choose a contractor with completed local projects. Visit them and talk to their clients.
4. Sign a building contract with a fixed specification, a price, staged payments linked to completed work, and a completion date.
5. Supervise the build, ideally with an independent site supervisor.
6. Register the house and connect permanent utilities on completion.

Upgrading a Nor Sor 3 Gor to a Chanote

Many plots on Samui still have a Nor Sor 3 Gor. It can usually be upgraded to a Chanote: the Land Office surveys the plot, neighbours confirm the boundaries, and a Chanote is issued. It takes time and the outcome isn’t guaranteed, particularly on hillsides and near forest land. A seller who agrees to upgrade before transfer, or a price that reflects the title, both work. Don’t pay a Chanote price for a title that hasn’t been upgraded.

Buying land as an investment

• Land doesn’t produce income until it’s built on, and vacant land carries a higher annual Land and Buildings Tax.
• Liquidity is lower than for villas or condos, and leasehold land is harder still to resell.
• Value depends on what can legally be built. A plot’s slope, access and zoning matter more than its size.
• Development (several villas or a small resort) brings in subdivision rules, the EIA thresholds for larger projects and, for hotels, licensing. Take specialist advice early.

Common mistakes

• Agreeing a price before checking the building rules for the plot.
• Buying with an informal access road that crosses someone else’s land.
• Underestimating the cost of power, water and hillside engineering.
• Paying a Chanote price for a Nor Sor 3 Gor.
• Signing a lease without a superficies, so the house you build isn’t legally yours.
• Starting construction before the building permit is issued.

Beachfront and sea-view land

• Beachfront plots are scarce and face tighter set-back and height limits. Check the coastline boundary on the title, and look for erosion.
• Sea-view hillside plots are where most of Samui’s views are. Check that the view can’t be blocked by what’s allowed below you, and price the engineering in.

See beachfront property and sea view property.

Where to buy land on Koh Samui

• The north coast, Maenam and Bang Por: more space, gentler land and better value.
• The west coast, Lipa Noi and Taling Ngam: sunsets and larger plots.
• The north-east, Plai Laem and Choeng Mon: premium sea-view hillsides.

Compare all areas in our area guide.

Frequently asked questions

General information only, not legal advice. Building rules change; check the current rules for any plot before you buy.