A Complete Guide to Site Preparation for ADUs, Home Additions & New Construction
Before building, your land must be evaluated and prepared to handle the structure safely. Site preparation involves several coordinated steps that ensure your project begins on solid ground.
What Site Preparation Includes
• Soil testing
• Demolition and clearing
• Grading
• Recompaction
• Trenching for utilities
• Backfilling
• Pad preparation
Each step must be managed precisely to meet California building codes.
Common Issues Without Proper Site Prep
• Failed inspections
• Foundation movement
• Water pooling
• Cracked slabs
• Soil instability
• Drainage problems
“I must explain to you how all this mistake idea denouncing pleasure & praising pain was born and I will give you a complete account of the system, and expound the actual teachings of the great explorer of the truth, the master-builder of human happiness.”
Emma Smithson
The Value of Working With a Professional Team
A licensed and experienced grading contractor coordinates sitework to ensure your project progresses smoothly. With correct compaction, accurate trenching, and clean concrete removal, your project moves forward faster and with fewer risks.
The Importance of Proper Grading Before Starting Any Construction Project in California
- Admin@jsvalley
- December 5, 2025



