In 1145, monks from Amelungsborn founded the Cistercian monastery Riddagshausen in the area of an older settlement, which was first mentioned in 1146 under the name "Ritdageshusen" (after 1150: Riddageshusen) For the settlement area in the northwest of the extensive walled monastery district (1) came at the beginning of the 14th century the name "Neuhof" on.
In the years 1546 and 1605 is in Neuhof a Vorwerk of the monastery, for 1605 also 2 Ackerhöfe and 8 "Kothöfe" handed down.In the second half of the 17th Century a manor was built.In 1822 they took the monastery and Neuhof in one Community together, which was incorporated in 1934 with the name Riddagshausen in the city of Braunschweig.
The oldest building in the former Neuhof dates back to the 17th century and is replaced by the rural half-timbered house Johanniterstr. 7 (2) documented. The houses Nehrkornweg 2 (3) and Am Kreuzteich 8 (4, formerly Amtsgericht) date from the 18th century.
In the late 19th century, residential buildings were erected in historicist half-timbered buildings (Stresemannstrasse 3 and 4) (5) and a massive building in the urban style (Johanniterstrasse 3) (6). In the 1930s, the National Socialists in the southeast of the monastery district of the former "Reichsjägerhof" (7) and a railway station (8) built in half-timbered construction, and made a reconstruction of going back to 1744 inn "Green Hunter" (9).
On a private initiative, several old farmhouses from Braunschweiger Land were moved to the town center in 1968-1980 (10); built in 1979 on the Lünischhöhe Bockwindmühle (11) comes from Remlingen.
Of the 28 fishponds originally belonging to the monastery property, 11 ponds have been preserved, these have been protected with their environment since 1936 and have been the European reserve since 1965.