The wage would apply not only to employees but also to contracts negotiated for cleaning services, he explained.
Finchley Reform Synagogue announced this week that it was the first individual synagogue to be accredited as a living-wage employer.
The shul’s Rabbi Miriam Berger joined London Mayor Boris Johnson, at a Citizens UK event on Monday to announce the increase in the wage.
She said employers had a responsibility to take care of their employees, “so that they in turn can take care of their families”.
She hoped other synagogues would to follow Finchley’s lead.
The living wage is calculated nationally by Loughborough University’s Centre for Research in Social Policy and in London by the Greater London Authority’s living wage unit.