Calls are being made for local authorities, national parks, heritage and community groups to help seek out the county's at risk Grade II listed buildings.

English Heritage has today launched this year's Heritage at Risk Register which features buildings considered to be at risk of falling into disrepair.

And for the first time, the charity has embarked on an ambitious programme to identify which of Norfolk's Grade II buildings - those which are of special interest, warranting every effort to preserve them - are at risk from neglect, decay or dereliction and to add them to the register.

Across the east of England, there are 52,000 Grade II buildings including 33 Bethel Street in Norwich.

Known to be at risk, the 18th century town house has been vacant for the past decade and is deteriorating. There are no active plans for its reuse and the building stands next to the former Bethel Hospital which is listed at Grade II*.

By adding Grade II buildings to the at risk register, it would be the first step to securing their future.

Authorities and organisations are being asked to take part in a pilot survey, for which they will receive funding.

Greg Luton, planning director for the east of England, said: 'Grade II listed buildings are the bulk of the east of England's heritage treasury. 'When one of them is lost, it's as though someone has rubbed out a bit of the past – something that made your street or your village special will have gone.

'We need help from local authorities, national parks, heritage and community groups to find the most efficient way of conducting such an exercise. We're prepared to fund nine to 15 pilot surveys around the country.'

Buildings on the 2012 at risk register include the Briton's Arms, Bethel Hospital and the Church of St George in Tombland.

To apply funding for a pilot survey, go to www.english-heritage.org.uk.