Said to be the site of the police lock up.

An early police lock-up is thought to have been located on the corner of Synnot and Greaves Streets, on the east side of the former police station at 129 Synnot Street. This site was once part of the 69 acre Werribee Police Paddock.

A check of police buildings identified in Bruce Trethowan's study of the Public Works Department in Victoria between 1851 and 1900 failed to find any information about the Werribee Police Station or Lock-up. Trethowan points out that last century police stations comprised several buildings and might include a sergeant's residence, detached office, stables and a wooden lock-up, possibly portable.

"Lock-ups were a very necessary part of police buildings and there are several situated around Victoria". These buildings were of standard designs and "were set down in lithographed plans that were adjusted to suit particular sites".

The site of the Werribee lock-up is shown as vacant land already on the 1910 "Plan of Subdivision of the Police Paddock". The registered owner of Allotment 1 on 25 May 1943 was M. Brown.