Can't you have house synagogues, the way some Christians have house churches? Or the way Catholics will sometimes have masses in private homes? I've never heard that anyone has to ask permsision for those kinds of things - and after all in this case you can't by definition have problems about excessive parking causing a nuisance, since cars aren't used on the Sabbath by the Orthodox Jews involved.

That's all a very different issue from restrictions on the density of houses in a neighbourhood. In any neighbourhood there is going to be some upper limit for density, and being a good neighbour involves respecting that.