Draft Ministerial Regulation No. .. (B.E. …) Issued Pursuant to the Building Control Act, B.E. 2522 (1979) (Amendment to Ministerial Regulation No. 39 (B.E. 2537), etc.)

Public Hearing Period: August 1 – 30, 2026

Key Content: This draft announcement amends Ministerial Regulation No. 39 (B.E. 2537) issued under the Building Control Act, B.E. 2522, to update certain requirements regarding fire safety systems, the design and quantity of bathrooms and toilets, and requirements for lighting and ventilation systems. The objective is to enhance building safety for occupants and ensure better alignment with current usage patterns. The key elements of this draft include:

• Adding definitions for relevant terms, such as public building, bathroom, toilet, compartmentalization (separation), etc.

• Revoking certain clauses in Ministerial Regulation No. 39 (B.E. 2537) issued under the Building Control Act, B.E. 2522, that relate to fire prevention and the determination of the required number of bathrooms and toilets.

• Mandating the installation of building floor plans for each level in clearly visible locations.

• Mandating spatial compartmentalization for buildings that contain storage rooms for combustible materials, mechanical rooms, or building equipment control rooms.

• Mandating the sealing or enclosing of pipe shafts and spaces between pipes to prevent the spread of smoke.

• Stipulating conditions for the provision of bathrooms and toilets, as well as the calculation of the number of sanitary fixtures.

You can submit your comments and read further details at [Link], or for any inquiries, please contact the Department of Public Works and Town & Country Planning at 02-299-4143