The Mornington Peninsula, located in Victoria, Australia, is renowned for its picturesque landscapes, diverse ecosystems, and thriving agricultural sector. From vineyards and orchards to residential developments and infrastructure projects, the region's soil plays a crucial role in supporting various land uses and activities. Understanding the composition, quality, and characteristics of the soil is essential for informed decision-making and sustainable land management practices. In this article, we explore the importance of soil testing on the Mornington Peninsula and the role of site classifications in ensuring successful development projects, with insights from The 4 Spheres, a leading soil testing and site classification company based in Australia.