Русско-англо-русский юридический словарь

lost property office is a place in a public building where things that people have lost are stored (Cambridge Dictionary)

A lost and found (American English) or lost property (British English), or lost articles (also Canadian English) is an office in a public building or area where people can go to retrieve lost articles that may have been found by others. (Wikipedia)

You will find the Lost Articles Office in the Bay subway station. The office is open to the public from 8 a.m. to 5 p.m., Monday to Friday, except statutory holidays. (TTC.ca)