How land is priced on Koh Phangan: the rai, and what moves the price

Land on Koh Phangan is measured and sold by the rai, and you'll see prices quoted as a figure “per rai.” That figure is a starting point, not an answer — two plots at the same price per rai can be worth wildly different amounts once you look at what actually drives value here.

The unit: rai, ngan, talang wah

Thai land area uses a few units it pays to know before you compare anything.

• 1 rai = 1,600 m² — the headline unit land is priced in.
• 1 ngan = 400 m² — a quarter of a rai.
• 1 talang wah (sq. wah) = 4 m² — 400 to a rai. Small premium plots are sometimes quoted per talang wah.

What actually moves the price per rai

The same nominal price can sit on plots that aren't remotely comparable. The big drivers:

• District — the west coast (Sri Thanu, Haad Yao and the wellness belt) carries a premium over quieter inland and northern areas.
• Sea view and slope — a sea view and a gentle, buildable gradient add a lot; a steep plot costs more to build on, which pulls land value the other way.
• Proximity to the beach — beachfront and near-beach plots are their own tier.
• Road access — a registered right of way versus a landlocked plot is one of the largest swings of all. See Land titles and how to verify one.
• Title class — Chanote versus Nor Sor 3 Gor matters, and cheap “Por Bor Tor 5” land usually isn't ownership at all, so it can't be compared on price.
• Whether you can build — under the 2025 environmental zoning, a plot you can't build on is worth a fraction of one you can. See Building zones on Koh Phangan.
• Utilities and usable shape — mains water and power, road quality, and how much of the plot is actually usable after setbacks and gradient.

Freehold and leasehold are priced differently

A freehold plot is quoted as a capital price per rai. Leasehold isn't a single per-rai price at all — it's a lease: an up-front prepayment or periodic payments over the term, usually with indexation built in. Since the post-2025 shift toward leasehold (see Leasehold vs freehold), comparing a leasehold offer to a freehold one means comparing a stream of payments to a one-time price, not two numbers per rai.

So how do you know if a price is fair?

Start from comparable plots — same district, similar access, view and title — not from a single per-rai headline. For current median land prices per rai by district, drawn from live inventory, see our market insights. Then the only way to know what a specific plot is worth is to check the things above against the deed and the zoning.