General Contractor License (KB2) Practice Exam 2026 - Free Contractor License Practice Questions and Study Guide

For proper drainage and to prevent water from accumulating around foundation walls, grading should slope away from the structure. A minimum distance of 10 feet is generally recommended to ensure that surface water effectively drains away from the foundation. This critical distance allows for adequate drainage during rainfall and helps minimize the risk of water infiltration that can lead to issues such as mold growth and structural damage.

While some guidelines may suggest shorter distances in certain conditions, the 10-foot standard is a widely accepted practice that ensures a buffer for effective drainage, accounting for variations in soil type, landscaping, and potential obstructions. This distance also helps mitigate puddling that could occur if the slope is too gradual or if the drainage is not sufficiently effective within the minimum parameters. It's essential for homeowners and contractors to adhere to these guidelines to maintain the structural integrity of buildings and promote appropriate drainage solutions.