Deadline for parallel enforcement of two editions of Iran building code Chapter 19
Iran's roads and urban development minister notified the interior minister that the fourth edition (1399) and fifth edition (1404) of Chapter 19 of the national building code may be enforced in parallel. Under the notification, reported on 3 August 2026, parallel enforcement runs from 10 January 2026 to 20 March 2027 (29 Esfand 1405), after which only the fifth edition governs design, supervision and construction. The notification states the deadline is final and cannot be extended.
Sources
Mehr News Agency, citing Engineering System Organization for Building · Mehr News Agency
اجرای همزمان ویرایش چهارم و ویرایش پنجم مبحث نوزدهم مقررات ملی ساختمان از ۲۰ دیماه ۱۴۰۴ تا ۲۹ اسفندماه ۱۴۰۵ بلامانع خواهد بود (۱۲ مرداد ۱۴۰۵).
Cited Aug 3, 2026
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