^I'm pretty sure it is a Sissoo, but I'm not an expert. Its sometimes easier to tell by the leaves, see in this picture and compare:
Most importantly though tell your landscapers to stop cutting the purple flowering bush to the right of your house into that awful ball. I see that all over the Valley and it makes me cringe, 1. its unnatural, 2. you're cutting off the beautiful purple part that flowers! Just let it grow into its normal shape, it'll look MUCH better.