The £30 million project was rejected at appeal stage when first put forward, but has now been backed by more than 2,500 residents after the practice included a new NHS Primary Care Trust and more parking in the scheme.
According to SLLB, Barnet Council has received more than 2,500 letters backing the scheme, which was originally thrown out three-and-a-half years ago due to lack of parking.
SLLB partner Dan Smith said: 'The project was turned down as the inspector thought there was insufficient parking outside the synagogue, especially if the venue would be staging weddings or Bar Mitzvahs.
'This has been addressed, and an interesting point is that the council originally wanted a Victorian pastiche building, but has now embraced a more modern development.'
Should the project be granted planning permission at the committee tomorrow, SLLB expects to be on site within six months with a construction time of two years.