THAILANDSICThailand Standard Industrial Classification

TSIC Activity

71101

Architectural activities and related technical consultancy

ประกอบกิจการให้บริการออกแบบสถาปัตยกรรม ออกแบบตกแต่งภายในและภายนอก จัดทำแบบแปลน รายการประกอบแบบ และงานเขียนแบบทุกประเภท รวมถึงการให้คำปรึกษา วางแผน ควบคุมงานก่อสร้าง ประมาณราคา บริหารโครงการ และดำเนินง

What this activity covers

Companies in this sector focus on architectural design, project planning, and related consultancy services.

  • Architectural consulting — Advisory services on architectural projects
  • Urban planning — Designing and managing urban spaces
  • Landscape architecture — Designing outdoor spaces and environments
  • Drafting services — Creating technical drawings and plans
  • Project planning — Organising and scheduling project activities
  • Surveying and mapping — Measuring land and creating maps

What companies here also do

Seen in real company registrations under this code — beyond the official definition, so licensing may differ.

  • Construction contracting — Managing construction projects and contracts
  • Environmental compliance — Ensuring projects meet environmental regulations
  • Design services — Providing various design solutions for projects

Not included here

  • Interior decoration View activities 74101
  • Landscape Care and Maintenance View 81300 Activities

Foreign ownership

List 3: Restricted, FBL/BOI route available

Architectural service business

Licensed architectural practice is additionally regulated by the Architect Act.

FBA B.E. 2542, List 3 (8)Routes: Foreign Business Licence, BOI promotion, US Treaty of Amity

Auto-mapped, verify against the Act. These TSIC mappings are indicative, not legal advice; the schedules of the Foreign Business Act B.E. 2542 are the authority. See the full foreign ownership reference.

Industry at a glance

as of 23 ก.ค. 69

The whole registered industry under this activity, every registration year, from the DBD DataWarehouse.

4,116
active companies operate here
฿12.8Bregistered capital, combined
฿33.3B
Sector revenue · 2025
-7% since 2023
฿1.7B
Net profit · 2025
1,748 profitable
202320242025

net profitrevenue

Foreign investment

new registrations · 2026 YTD
10%of new registered capital is foreign-held
฿15.1M foreign฿138.8M Thai

Largely domestic, with some foreign investment.

New in 2026

123-32.4%

registrations, YTD

Registered capital

฿12.8B-0.4%

since year-end

Largest by revenue

Latest filed-year revenue, not a multi-year total

  1. 1Index International Group Public Company Limited฿1.1B
  2. 2Arch Design and Construction Co., Ltd.฿1.1B
  3. 3YHS International Co., Ltd.฿993.0M
  4. 4P.I.A. Interior Co., Ltd.฿752.2M
  5. 5M.A.A. Consultant Co., Ltd.฿695.8M

Largest by registered capital

  1. 1P-Side Design Co., Ltd.Bangkok฿350.0M
  2. 2Aladill Co., Ltd.Krabi฿350.0M
  3. 3Atlas Asset Co., Ltd.Bangkok฿300.0M

Source: Department of Business Development DataWarehouse. Financial figures are combined totals of companies that filed statements; revenue and profit shown for the latest three reporting years.

Companies registered since 2022

Browse all

New DBD registrations under this activity since 2022, the period the registry snapshot covers, not the full historical register.

1,144
Registered
since 2022
1,099
Still active
45
Dissolved
฿1.0M
Median capital
of active

New registrations per year

2022peak 305 in 20232026

Largest active companies by registered capital

Source: Department of Business Development (DBD) new-registration records, 2022 to present. Counts cover companies first registered in that window, reflect the latest snapshot load, and may lag the live register.

Emerhub

Restricted activity? There is usually a route.

Emerhub structures foreign-owned companies around FBA restrictions: Foreign Business Licence applications, BOI promotion, and compliant shareholding structures. Talk through your case before you commit to one.

Talk to Emerhub Thailand