Studiestræde 21 is a Neoclassical property in the Latin Quarter of Copenhagen, Denmark.

66 in Northern Quarter, owned by master mason : Christoffer Decher.

The present building on the site was constructed in 1797 by master builder Carl Christian Martens.

Jens J. Weile resided on the in the building with his wife Maren Weilem their three children (aged one to 14), a maid, two soldiers and a carpenter.

[2] Niels Jensen, a beer seller (øltapper), resided in the building with his wife Trine Pedersdatter and their two-year-old daughter.

[4] Susanne Goldzm a widow, resided in the building with a maid, a carpenter and a workman.

Thye Christensen, a distiller, resided on the ground floor with his wife Margrethe Rasmussen, their three children (aged 15 to 21), three male servants and a maid.

She lived on the ground floor with her four children (aged 12 to 27), three male servants and a ma.

a businessman ( Commisionair), resided on the first floor with his wife Frederikke Kirstine Seehaunsen (née Rohkohl), their two children (aged nine and 22) and a lodger.

[13] Jacob Theodor Sørensenm a tobacco spinner, resided on the second floor with his wife Laura Emilie Henriette Sørensen (née Prehn), their three children (aged two to six= and one lodger.

[16] The brothers Christen and P. M. Daell from Aalborg established a mail order business on the first floor on 12 January 1910.