A quarter of refurbishment sites blitzed by the Health and Safety Executive in Newscastle last week were served enforcements notices.
Inspectors visited 24 contractors engaged on refurbishment sites in the city.
Work was stopped after the HSE issued four prohibition notices due to concerns about working at height and electrical issues.
Two improvement notices were also issued where there was a lack of adequate welfare facilities and the use of stepladders without carrying out a risk assessment.
The figure was a significant drop from the 13 of 15 sites served with notices in Sefton a fortnight prior.
The rolling inspection programme is part of a HSE crackdown on unsafe practices.