Dahlsens is a diverse business that has operated successfully for over 140 years, a rarity in Australian or international business. We invest in and work with our people, partners and communities to make a positive and sustainable contribution to the Australian building industry. Dahlsens is the largest builder focused merchant in Victoria and NSW with a heavy presence in regional areas. We offer Whole of House supply and have 24 trade stores, ten truss manufacturing sites and one metal roofing centre.

Welcome to Grand Design Windows, a bespoke builder and designer of custom-made furniture in Ballan. With our expertise in timber supplies, we offer a wide range of exquisite timber windows and double glazed windows. Our meticulous craftsmanship and attention to detail ensure that each piece is a masterpiece in itself. Enhance your space with our elegant designs, embracing the timeless beauty of wood. Experience the artistry of Grand Design Windows and transform your home into a work of art.