Gotisches Haus, Late Gothic brick townhouse in Brandenburg an der Havel, Germany

The Gotisches Haus at Ritterstraße 86 is a two-storey red-brick building from 1452, measuring 13.5 by 10 metres, with walls 80 cm to one metre thick. Its two originally separate parts, the north-western one a timber-framed structure, were joined under a single roof after 1724. Pointed and round-arched blind niches decorate the interior and exterior, and the south-east gable has three round panels.

The building was constructed in 1452 and initially stood as two independent structures side by side. Their unification under a common roof occurred in the early 18th century.

The house's original use is unknown; in later times it housed the "Radio-Pax" radio repair shop and the Carl Stein shipping company. The main house (Hedemann 152) held first-class brewing rights, and the ground floor contained a hall-like room of nearly 100 square metres whose purpose is still unclear.

The house stands at Ritterstraße 86, on the old road linking the two towns of Brandenburg, 77 m north of the choir of the Johanniskirche and 81 m from the Havel. The city of Brandenburg an der Havel owns the building; architect and conservationist Carsten Westphal was commissioned to secure and restore it, with completion planned for 30 April 2015 at a total cost of about 1.5 million euros.

The cellar floor is laid with square-mouthed, round-bottomed ceramic pots set mouth-down side by side, dating from the house's construction and used to insulate the floor. The vaulted cellar reaches four metres below street level and stays dry 81 metres from the Havel.