Eltzer Hof, Baroque mansion in Mainz, Germany

Eltzer Hof is a three-storey baroque mansion at Bauhofstraße 3/5, corner of Mittlere Bleiche, in Mainz's Bleichenviertel. Its eighteen-axis facade is divided by rusticated pilaster strips, covered by a hipped mansard roof and decorated only by two baroque portals. A modern infill building connects it with the former Dalberg-Hammelburger Hof at Mittlere Bleiche 40, which has a column-supported balcony.

The Eltzer Hof was built between 1742 and 1743 in the Bleichenviertel, with a plainness rare for its time. In 1774 the Counts of Eltz acquired the neighbouring Dalberg-Hammelburger Hof and joined it to their palace, hence the plural Eltzer Höfe. In August 1792 Goethe visited the Prussian statesman vom und zum Stein, who was lodging there. The complex burned in the British air raid of August 1942 and was rebuilt between 1965 and 1970 with a concert hall for the Mainzer Liedertafel.

The name Eltzer Höfe dates from 1774, when the Counts of Eltz acquired the neighbouring Dalberg-Hammelburger Hof and joined it to their own palace. From 1965 to 1970 the rebuilt complex housed a concert hall for the Mainzer Liedertafel and served as a venue for Mainz carnival events. Its cellars held discotheques under various names from 1963 until 2018, the last called 50grad.

The mansion sits at Bauhofstrasse 3-5 near the Golden Ross Barracks and is accessible for exterior viewing from the public street. Ongoing renovation work to create apartments, offices, and retail spaces means that interior access is currently not available.

The mansion merged with the adjacent Dalberg-Hammelburger Hof in 1774 to form a larger complex that remains known as the Eltzer yards today. This joining of two noble residences created an unusual urban estate with shared spaces and interconnected layouts.