Koh Samui Land Purchase & Development Feasibility

Premium Due Diligence for Villa & Resort Land

Planning to buy land in Koh Samui? Archi Studio helps you check titles, zoning, slope, utilities and drainage before you commit, so your dream villa or resort is not blocked by regulations or hidden site issues.

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Buying in Samui: Why Due Diligence Matters

On paper, many plots in Koh Samui look perfect: sea view, “ready to build”, attractive pricing. In reality, every piece of land is shaped by title type, beach distance, altitude, slope, drainage, electricity, water and access roads.

Archi Studio evaluates land like a developer, not a tourist. Before you sign, we help you understand:

  • Land Title & Zoning: Chanote vs Nor Sor 3, permitted uses and density.
  • Altitude & Slope: 80m / 140m rules, hillside limits and buildable footprint.
  • Access, Drainage & Waterways: Is your land in a natural water path or trapped basin?
  • Electricity & Water: Realistic strategies for power, pressure and storage, not just “electric nearby”.

We don’t just tell you if land is “nice”. We show you if it can legally and practically support the villa or resort product you have in mind.

Key Things to Check Before You Buy Land in Koh Samui

Our specialization

Why Koh Samui Land Is Not a Normal Suburb Plot

Koh Samui land looks seductive on a listing: panoramic sea view, “ready to build”, attractive price. In reality, every plot is controlled by Thai land titles, beach-distance rules, hillside zoning, slope, access, utilities and drainage. If you skip these checks, you can end up with a beautiful but unbuildable view.

Archi Studio helps you stress-test land in Koh Samui before you sign, so your villa or resort concept is aligned with what’s actually legal, feasible and profitable.

We translate Koh Samui’s rules into clear development potential.

How Regulations Impact Your Development Concept

Koh Samui’s regulatory stack—land titles, planning rules, beach-distance bands, hillside/altitude zoning and environmental updates—drives:

  • How many villas or keys you can build
  • The height, footprint and roof form of each building
  • How much land must remain green or unbuilt
  • Whether you’re likely to trigger IEE/EIA environmental processes

A concept drawn without these constraints is a mood board, not a development plan. At Archi Studio, we plug regulatory conditions into parametric and BIM tools so your unit mix, road layout and villa types are optimised inside the real rulebook.

Beach Distance & Coastal Zones

Beachfront and near-beach land is tightly controlled in Samui:

  • The first 0–200 m from the shoreline affects:

    • Max building height and number of storeys

    • Max footprint per structure

    • Roof form (pitched vs flat) and visual impact requirements

A listing saying “beachfront” or “200 m from the sea” is not enough. You need survey-backed data and a design team that understands what each band allows for villas vs resort blocks.

Altitude, Slope & Hillside Zoning

Two plots with similar views can have very different rule sets:

Altitude (height above sea level) impacts:

  • Whether only a single home per plot is allowed
  • Height caps (often around 6 m in hillside bands)
  • Required percentage of green / unbuilt land

Slope often controls:

  • Whether the land is treated as hillside
  • Max building footprint (e.g. ~80–90 m² in steeper zones)
  • Whether construction is restricted or effectively prohibited

A reliable topographic survey is non-negotiable. No topo, no confident decision.

Access, Roads & Rights of Way

Great views don’t matter if nobody can safely or legally reach the site:

  • Is the access road official or purely private?

  • Are road widths and gradients realistic for construction trucks and future residents?

  • Is there documented right-of-way registered on title?

Road, retaining walls and drainage can consume a big slice of your pro forma if you ignore them up front.

Electricity Supply & Capacity

“Electricity nearby” ≠ “project-ready power”.

You want to know:

  • Is power from PEA (Provincial Electricity Authority) or via an informal private line?
  • Where is the nearest transformer and main line?
  • Does your villa/resort concept require upgraded capacity or a dedicated transformer?

We align your projected electrical loads with existing capacity so you can model realistic connection and upgrade costs.

Drainage, Waterways & Flood Risk

This is where many projects quietly fail.

Key questions:

  • Is your land the lowest bowl surrounded by neighbours’ boundary walls?
  • Are there natural drainage lines or seasonal streams crossing the plot?
  • Is there a legal and physical exit point for storm-water, or will you need serious engineering and negotiations to create one?

We read the topography and surrounding context to see where water comes from, how it crosses, and where it can legally leave your land.

Water Source & Storage Strategy

Samui is an island with real water constraints:

  • Is there a government water line at the boundary, or is the area dependent on wells or trucked water?
  • At higher elevations, will mains water have reliable pressure year-round?
  • What will you need in terms of storage tanks, pumps and treatment systems?

We help you plan for infrastructure-level water solutions, so your budget and product don’t get derailed later.

Land Title & Legal Status

The first filter is always the title:

  • Chanote (Title Deed) – GPS-surveyed and clearly defined; normally the benchmark for serious development and finance.

  • Nor Sor 3 Gor / Nor Sor 3 – older or transitional; may be upgradeable but need careful legal and survey checks.

  • Other possessory or informal titles can be high risk for structured developments.

We work alongside your Thai lawyer to connect title reality with design and development potential, but legal advice always comes from licensed professionals.

Featured Case Study

Hillside Villa Land Feasibility

Steep sea-view plot above 80m. We assessed title, slope, footprint limits and drainage, then developed a concept showing how many villas could be built legally, where to place roads and tanks, and how to avoid building in natural water channels.

View Project
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Featured Case Study

Beachfront Plot Access & Drainage Review

We reviewed a near-beach plot for 0–200m coastal rules, road access, storm-water exit points and utilities. The owner received a clear yes/no on subdivision, realistic building envelopes and a roadmap for approvals.

View Project
Featured Case Study

Resort Land & Masterplan Package

For a multi-villa resort concept, we combined land due diligence, yield study and preliminary masterplan. The client understood how many keys were realistic, likely IEE/EIA triggers, and the sequence from purchase to permits.

View Project
Where we work

We evaluate land and develop masterplans across Koh Samui, with deep familiarity in:

Chaweng Noi • Bophut • Maenam • Lamai • Plai Laem • Choeng Mon • Taling Ngam

Koh Samui Land Purchase FAQ

Q: How much does a land feasibility study cost?

Fees depend on the size of the land, available surveys and the depth of analysis required. Simple desktop checks are more affordable, while full feasibility with site visits, topo review and yield studies requires a higher investment. Contact us with your Chanote and location for a tailored proposal.

Q: Can I build on steep hillside land in Koh Samui?

It depends on altitude, slope percentage and zoning. Above certain thresholds, you may be limited to one home per plot, strict height caps and small building footprints – and some slopes are effectively no-build. Our role is to map these constraints and show what is realistically possible before you buy.

Q: How do I know if there is electricity and water to the site?

Listings often say “electric and water nearby”, but that may mean a private line or trucked water. We check the nearest government power lines, transformers, water mains, pressure at elevation and options for tanks or wells. This helps you understand real connection costs and reliability.

Q: What if my land is in a natural waterway or low point?

If your plot sits in a natural drainage path or closed basin, you may face serious flood and erosion risks. Engineering solutions are sometimes possible but can be expensive and may require negotiations with neighbours and authorities. We analyse contours and surrounding walls to highlight this risk early.

Q: Do you also handle design and permits after I buy?

Yes. Archi Studio can take your project from feasibility into full architecture and interior design, including coordination with Thai engineers and authorities. Our construction partner Ancra can then build on-site, giving you a seamless land-to-villa delivery path.

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Ready to evaluate a plot in Koh Samui?