Charities should carry out door-to-door fundraising in areas designated as 'no cold calling zones' if they believe the zones are not "proportionate", a new version of the Institute of Fundraising's code of practice on face-to-face fundraising will advise.
The updated code, due to be published this week, will say that charities should consider whether the zones have been established with the agreement of local people and are based on the needs of vulnerable communities.
If charities believe a zone does not meet these criteria, they can allow door-to-door fundraisers into the area, the new code says.
No cold calling zones are areas in which residents display signs reading "no uninvited salespeople". They are set up by local authorities, working with police, trading standards bodies and residents, but they have no statutory force.
A spokeswoman for the institute said: "Some of the zones apply to fundraisers; others do not. When they do, fundraisers should enter the area only if they believe the zone does not represent a proportionate approach to protecting consumers."
A spokesman for the Local Government Association said: "Cold calling in these zones is not illegal, so it's up to a charity to decide whether to respect residents' wishes."
The institute has issued a revised code on telephone fundraising that does not mention 'administrative' calls made to supporters who have asked not to be contacted. The institute's Standards Committee will decide next month what the code should say about such calls, ruled unlawful by the Information Commissioner's Office.