The dirt is flying and the bulldozers are busy at the old Waterloo Gardens, now a bustling construction site for Devon Yard.

Good thing, too.

Because URBN is already booking weddings and mitzvahs – from Sept. 1, 2018 onward – at the Yard’s splashy event venue, Terrain Gardens.

Never mind that the project took more than four years to get OK’d; URBN’s confident it can have the whole shebang up and running in less than 12 months.