Welcome to Coastline Building Builder

At Coastline Building & Maintenance, we specialise in creating custom granny flats across the Central Coast, NSW. With over 20 years of experience, our skilled team delivers tailored granny flat solutions that suit your property, lifestyle, and budget. 

Whether you’re looking to create additional living space for family, generate rental income, or enhance your home’s value, we manage the entire process from design and approvals through to construction. As a trusted granny flat builder on the Central Coast, we ensure every granny flat is constructed to the highest standard, showcasing quality workmanship and meticulous attention to detail. 

We proudly service Gosford, Terrigal, Wamberal, Erina, and surrounding Central Coast areas. Contact Coastline Building today to discuss your granny flat project and discover how we can bring your vision to life.