Industrial Estate Authority of Thailand (IEAT)
Industrial Estate Authority of Thailand (IEAT) is the state agency under Ministry of Industry responsible for registering, licensing, and regulating all industrial estates nationwide. IEAT also directly operates select flagship state estates including Map Ta Phut Industrial Estate (Rayong), Laem Chabang Industrial Estate, selected others. Established by Industrial Estate Authority of Thailand Act B.E. 2522 (1979). Not tradable but materially shapes sector policy, tenant-ownership framework.
Snapshot
Headline numbers a buyer checks first.
Registered estates
~60+
FY2024
State-operated estates
Map Ta Phut, Laem Chabang, others
Ongoing
Status
State agency
Ongoing
Founded
1979
Historical
What this organisation actually does
IEAT's three functions: (1) regulator — registers, licenses, monitors all industrial estates nationwide, including environmental, safety, land-use compliance; (2) direct operator — Map Ta Phut (Thailand's largest petrochemical cluster, host to PTTGC, IRPC, SPRC), Laem Chabang (deepwater-port-adjacent industrial zone), plus selected smaller estates; (3) policy-implementation arm — administers foreign-tenant land-ownership, operating-rights framework that distinguishes estate-based FDI from outside-estate restrictions.[, ]
Strategic role: enables FDI via estate-ownership framework (vs foreign-ownership restrictions outside estates); coordinates with EEC Office, BOI on incentive alignment; regulates utility, infrastructure, environmental standards. Not tradable but materially shapes sector economics, tenant economics.[, ]
Programs administered
Regulation
Estate licensing and environmental oversight
Registers, licenses, monitors all industrial estates nationwide for environmental, safety, land-use compliance. 60+ estates registered. Non-compliant estates face licence suspension. Environmental enforcement capacity has tightened since 2020.
Direct operation
Map Ta Phut Industrial Estate
Thailand's largest petrochemical cluster (PTTGC, IRPC, SPRC, Gulf Energy anchor tenants). IEAT operates infrastructure, utilities, port access directly. Critical to Thai petchem, LNG, heavy-industry value chain.
Direct operation
Laem Chabang Industrial Estate
Port-adjacent industrial zone colocated with Laem Chabang deepwater port. Export-manufacturing, electronics, auto-parts tenants. IEAT infrastructure enables bonded zone, free-zone benefits for FDI tenants.
FDI framework
Foreign-tenant ownership rules
Estate-based FDI framework allows foreign manufacturers to hold land and operate outside normal FBA restrictions. Critical for multinational plant investment; IEAT administers the operating-rights framework distinguishing estate-based from outside-estate foreign investment.
Watchpoints
Map Ta Phut cluster evolution
Petrochemical cluster depth, energy transition, CCUS pilot.
Laem Chabang expansion
Port Phase 3, industrial-zone integration.
IEAT framework reform
Foreign-tenant ownership rules, environmental standards updates.
EEC coordination
Alignment with EEC Office incentive framework.
Thailand industrial estates — state vs private flagship comparison
Map Ta Phut IE
Operator
IEAT (state)
Key industries
Petrochemical, LNG, chemical
Location
Rayong
Note
Thailand's largest petchem cluster
Laem Chabang IE
Operator
IEAT (state)
Key industries
Export manufacturing, logistics
Location
Chonburi
Note
Adjacent to Laem Chabang port
Amata City (Chonburi, Rayong)
Operator
Amata (SET: AMATA)
Key industries
Auto, electronics, food
Location
Chonburi, Rayong
Note
Largest private estate operator
| Estate | Operator | Key industries | Location | Note |
|---|---|---|---|---|
| Map Ta Phut IE | IEAT (state) | Petrochemical, LNG, chemical | Rayong | Thailand's largest petchem cluster |
| Laem Chabang IE | IEAT (state) | Export manufacturing, logistics | Chonburi | Adjacent to Laem Chabang port |
| Amata City (Chonburi, Rayong) | Amata (SET: AMATA) | Auto, electronics, food | Chonburi, Rayong | Largest private estate operator |
| WHA Eastern IE | WHA Corp (SET: WHA) | Automotive, EV, logistics | Chonburi, Rayong | EEC-focused private estate |
Related Market profiles
Peers, parents, partners, agencies, and other Industrial Estates actors.
Partner
WHA Corporation
IEAT licenses WHA-operated estates.
Open Market profile →
Partner
Amata Corporation
IEAT licenses Amata-operated estates.
Open Market profile →
Sector peer
Mae Sot Special Economic Zone (Tak SEZ)
Thai government-designated Special Economic Zone in Mae Sot, Tak Province, on the Myanmar border; promotes border-trade manufacturing, labour-intensive industry, and cross-border logistics with the Myawaddy corridor.
Open Market profile →
Sector peer
Rojana Industrial Park
Listed Thai industrial-park developer; Ayutthaya Japanese-tenant-tilted, Saraburi, Prachinburi, Rayong parks.
Open Market profile →
Sources + data provenance
Every filing, filing-adjacent register, or trusted industry source cited in this profile.
Industrial Estate Authority of Thailand (IEAT) — Estate Registry, Statistics
Industrial Estate Authority of Thailand Act B.E. 2522
Publisher
Government of Thailand
Grade
Primary
As of
2019-01-01
EEC Office — Targeted Zone, Land-Ownership Exception
| Source | Publisher | Grade | As of |
|---|---|---|---|
| Industrial Estate Authority of Thailand (IEAT) — Estate Registry, Statistics | Industrial Estate Authority of Thailand | Primary | 2026-03-31 |
| Industrial Estate Authority of Thailand Act B.E. 2522 | Government of Thailand | Primary | 2019-01-01 |
| EEC Office — Targeted Zone, Land-Ownership Exception | EEC Office of Thailand | Primary | 2025-12-31 |
Reports featuring this profile
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Sits alongside 3 other Atlas profilesThai Petrochemicals: PTT Global Chemical, IRPC, and the Map Ta Phut Industrial Concentration
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Sits alongside 5 other Atlas profilesThailand Industrial Estates Market Intelligence
State regulator, Map Ta Phut, Laem Chabang operator; IEAT Act B.E. 2522.
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Sits alongside 4 other Atlas profilesThailand Oil & Gas Market Intelligence
Map Ta Phut industrial estate hosts Thailand's largest petrochemical cluster (PTTGC, IRPC, SPRC).
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Sits alongside 8 other Atlas profilesThailand EEC Industrial Infrastructure Deep Dive
IEAT Industrial Estate Authority of Thailand regulates EEC industrial estates.
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Sits alongside 3 other Atlas profilesThailand BOI Incentive Economics Deep Dive
IEAT Industrial Estate Authority; coordinates BOI, EEC industrial estates.
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Sits alongside 4 other Atlas profiles