Home Postcode finder NSW New Buildings New Buildings postcode NSW New Buildings is a locality in New South Wales covered by postcode 2550. Postcode 2550 State or territory New South Wales (NSW) Region NSW Country West Add a free New Buildings business listing Be the first listing in New Buildings Common questionsWhat is the postcode for New Buildings?New Buildings, NSW has the postcode 2550.What state is New Buildings in?New Buildings is in New South Wales (NSW).Does postcode 2550 cover more than one suburb?Yes. Postcode 2550 covers 52 localities, so the postcode alone does not identify New Buildings. Browse other postcodes in New South Wales, or widen the search to every Australian postcode.