Sovereign Building Company Home ›› Local Listings ›› WA ›› Balcatta ›› Sovereign Building Company WA Real Estate Balcatta, WA 6021 Sovereign Building Company08 9444 3943Fax: 08 9444 3915https://www.sovereignbuilding.com.au Since 2005 Sovereign Building Company has grown from a small, brother and sister start up to a forever expanding residential building company. Sovereign Building Company is a family orientated business with customer service at the forefront of their minds, when you work with Sovereign you work directly with the directors to ensure they provide you an experience like no other.