Hi @Suzanne21 welcome to the community and thanks for posting. That means the address is not on Openreach's database. Have you registered your address with Royal Mail? You can still order a line to be installed on a Bronze address but it will require an Openreach survey to decide how to get a line to the property.
As it's a new build it won't be classified as a Gold address until after service has been provided.
Thanks
Neil
