According to the historical publication The Star Fortress Houses – Life in Historic Hamina, the house was built in the early 1820s by master saddler Eric Johan Dahlberg.

Standing on a natural stone foundation, the house is among Hamina’s oldest remaining residential buildings. The proportions and shape of the ground-floor windows reflect the original Empire style. The building underwent a major renovation in 1904, likely when an additional floor was added. At the same time, a charming glass porch was built at the entrance, and the old outbuilding was replaced with a new structure containing three woodsheds.

The history of the house is closely tied to the famine years and subsequent epidemics that struck Finland in the late 19th century. From 1875 to 1899, Dahlberg House served as a private 8-bed fever hospital, with Dr. Robert Ek—who lived just a stone’s throw away—serving as the attending physician. When the hospital closed on December 1, 1899, both the remaining patients and the hospital’s substantial funds—amounting to tens of thousands of marks—were transferred to the new municipal hospital in Saviniemi. At that time, the house and property were transferred to city ownership.

In 1902, the city sold the house and lot at a public auction. Since then, the building has served as a private residence. In the early decades of the 1900s, the house accommodated several tenants, many of whom also ran businesses from their apartments. Advertisements in local newspapers listed services offered by a seamstress, shoemaker, tailor, carpenter, and café owner.

Today, Dahlberg House is privately owned.