Kompagnistræde 23 is a timber-framed property situated on the shopping street Strædet between Knabrostræde and Rådhusstræde in the Old Town of Copenhagen.

Constructed in 1734 as part of the rebuilding of the city following the Copenhagen Fire of 1728, it is one of the oldest buildings in the street.

Former residents include the naval officer Lorentz Fjelderup Lassen [da], Tortus Copenhagen, a ceramics studio, is now based in a rear wing.

[8] A third household consisted of Danish Chancery courier Peter Saxe, his wife Marie Cathrine Knudsen, their 17-year-old son Henrich Saxe (student), the lodger Lars Jessen (student) and one maid.

Ludvig Haupt, a type founder (skriftstøber) working for Berling, resided on the second floor with his wife Marie Charlotte Herring, their three children (aged one to five) and one maid.

His sister Olivia Marie Frederike Korck resided on the ground floor with a maid.

Ernstine Winkelhorn and Frederikke Nicoline Geus, two widows (aged 73 and 71), resided on the first floor with one maid.

The now 58-year-old Olivia Marie Frederikke Korck was still residing on the ground floor of the front wing.

Rosalia Jetzmark and Vilhelmine Dahlman, two unmarried women in their 60s, resided on the second floor.

[13] The property was acquired by master joiner Johannes A. Smith in the second half of the 20th century.

[14] The building was originally constructed with two storeys over a walk-out basement and was then topped by a pitched roof with a four-bay gabled wall dormer.

The mansard roof is clad with red tile and features three dormer windows towards the street and two towards the yard.

[16] Tanguy Lavoriette, a French-born landscape architect, works for the Agency for Culture and Palaces.

[17] Tortus Copenhagen, a ceramics studio founded by American ceramics artist Eric Landon, his brother Justin Landon and Karin Blach Nielsen,[18] is now based in the rear wing.