South Hampstead Synagogue has delayed its multi-million pound rebuilding scheme until after the festivals in October.
The timing of the construction had raised the prospect of the community spending Rosh Hashanah and Yom Kippur in temporary premises.
Although the projected cost is rumoured to have reached £15 million, shul chairman David Turner would not disclose a figure.
He did say that there were "all sorts of discussions to ensure we can afford it".The redevelopment was "probably the most ambitious shul building project in the country, certainly in the United Synagogue, and we're very excited about it".
