World's oldest architectural practices continuously operating

This article lists the oldest extant architectural practices in the world. Very few architectural practices are still operating whose foundation pre-dates the beginning of the 20th C and it would not be unreasonable to conclude that any practice that was founded in the 18th or 19th C should be listed as amongst the oldest surviving architectural firms around the globe.[1][2][3] In order to qualify for the list a practice must:

  • be predominantly an architectural practice, designing and constructing buildings and like structures
  • be registered in their home territory as architects or architectural designers
  • be operating continuously from the date of foundation, albeit a change of names or ownership is likely over intervening centuries
  • be evidenced by relevant authoritative sources
  1. ^ "Oldest architectural firm explains". Retrieved 2022-10-27.
  2. ^ "Singapore's oldest architectural firm". Retrieved 2022-10-27.
  3. ^ "Australia's oldest architectural dynasty". Retrieved 2022-10-27.