Buying off-plan in Thailand: permits and mother titles
Off-plan means unbuilt: you commit to a property on paper, before the construction exists and sometimes before the paperwork is complete. This guide explains the two points where off-plan purchases most often fail — the building permit and the mother title — and what a structured verification checks before any payment.
The two usual failure points
An off-plan purchase is a promise about the future: the building does not exist yet, and the paperwork may not be complete either. The two usual failure points are the building permit and the mother title.
Both are verifiable before any payment: whether the permit exists, and whether the subdivision is complete. The sections below look at each in turn.
The building permit
The building permit is issued by the municipality — the Tessaban. For an off-plan property, the question about the permit is not its conditions; it is whether it exists at all.
'It's coming' is a red flag — a finding that materially affects the decision. A verification records it as such, plainly: what exists, and what is missing.
The mother title
A development does not always start from the plot you buy. The mother title is the parent parcel the development subdivides from — the plot you receive is a result of that subdivision.
Off-plan villas are often sold before subdivision completes. The verification checks where the plot stands in that process — what exists, what is missing, and who verified it.
Zoning and environment
The city plan colours land by use — residential, agricultural, conservation — and determines what may be built. Environmental zones add constraints: on Koh Samui, for example, Zone 2 orange allows residential construction, with a height cap commonly set at 12 metres and green-area ratios that apply.
Samui and Phuket also restrict building above certain gradients and elevations. The consequence is direct: land can be legally owned and legally unbuildable. That is why the verification checks what the land can actually carry, not only who owns it.
Off-plan in the price grid
Off-plan and land are standard tiers in Suradeed's grid — not reviewed work. A villa or land on a registered lease, with a straightforward structure, is C2 fixed-price work: €1,590 (THB 62,010).
What is actually reviewed is a structure nobody has established yet — a company holding, an offshore layer, a title or a route the documents have not settled. Those dossiers are quoted by the partner firm after review, at a price agreed before any work starts.
What Suradeed is, and is not
Suradeed is not a law firm and gives no legal advice. Every legal finding and recommendation in a verification certificate is produced and signed by a licensed Thai law firm, which is responsible for it. Suradeed defines the verification protocol, coordinates the work, controls its quality and delivers the result.
You are billed in two lines for that reason: the partner firm's fee, which Suradeed collects as payment agent for the firm, and Suradeed's own platform and coordination fee. Suradeed accepts no commission or referral benefit from any seller, developer, agent or broker — independence is contractual, not a policy statement.
FAQ
What are the risks of buying off-plan?
Off-plan means unbuilt, and the two usual failure points are the building permit and the mother title. The verification checks whether the permit exists at all — 'it's coming' is a red flag — and whether the mother title's subdivision is complete, since villas are often sold before it is. Those two points are checked before any payment.
What is a mother title?
The mother title is the parent parcel a development subdivides from. Off-plan villas are often sold before subdivision completes — the plot you buy is a result of that subdivision, and its completion is part of what the verification checks.
What if the building permit is missing?
For off-plan, the question about the building permit is whether it exists at all. 'It's coming' is a red flag — a finding that materially affects the decision — and a red flag becomes a condition before any payment. The verification states plainly what exists and what is missing.
Can land be legally owned and legally unbuildable?
Yes. The city plan colours land by use and determines what may be built; environmental zones add constraints, such as Koh Samui's Zone 2 orange, which allows residential construction with a height cap commonly set at 12 metres. Samui and Phuket also restrict building above certain gradients and elevations. Ownership and buildability are two separate questions — the verification checks both.
Know what you are buying before you commit.
Suradeed coordinates a structured review of Thai property documents with licensed, independent law firms — for a fixed price, agreed before any work starts.
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