The Długosz House is a 15th century mansionary structure in Sandomierz, Poland.

The building is on the register of monuments in Poland, and it composes part of the historic portion of old Sandomierz.

According to Zeissberg, Długosz's letters from the period indicate a slow rate of construction.

[3] Historian Michał Bobrzyński states that Długosz controlled the construction of the mansionary building in Sandomierz by way of correspondence and visits to the site.

Church workers still resided in the building, but it was in "a visible state of neglect."