Sullivan Building is a family run business located in Holland Park and we specialise in renovating Queenslanders in and around Brisbane. Bi-fold doors and windows are a particularly popular choice amongst my clients when renovating and extending their homes. I have found that Colonial Warehouse has a great selection in their showroom and they are amongst the best in Brisbane for quality and price. I have had doors custom made and I also like that the doors can be primed for my clients who are wanting a painted finish. My customers are consistently happy with the quality of the products we use and we are very happy with the service and quality we receive from Colonial Warehouse.