The present building on Number 1 (Deucalion 10) is the product of a reconstruction in the 20th century when two older buildings (Deucalion 4 & 5) were merged. They were separated by a medieval alley parallel to Funckens Gränd, of which remains a narrow and elongated backyard passing through the present block. All other traces of the medieval neighbourhood have been obliterated by repeated reconstructions over hundreds of years.
The present building on Number 1 (Deucalion 10) is a result of a 20th-century reconstruction, combining two earlier structures (Deucalion 4 & 5), which were previously divided by a narrow alleyway adjacent to Funckens Gränd. The rest of the medieval neighborhood has been lost due to successive rebuildings.