In 1827, Mathias Anker Heegaard, the owner of Blågård, obtained a licence from King Frederick VI to convert the property into an iron foundry.
The so-called Demarcation Line which restricted the construction of buildings in the area was moved from Jagtvej to Peblinge Lake in 1852 and the street received its current name in 1859.
The teacher training college Blaagaard Seminarium was founded in rented rooms in Blågårdsgade in 1859 and a purpose-built building was inaugurated at No.
Located at the corner with Nørrebrogade, Alderstrøst was built in 1870 by Association of Craftsmen in Copenhagen to provide affordable housing for elderly, indigent members and their widows.
29, the building with the canted bay windows located opposite Blågårds Plads, is from 1908 and was designed by Johannes Strøm Tejsen.