San Diego County lots frequently have sloped terrain, clay-heavy or sandy soil, and limited backyard depth. The on-site evaluation measures the court footprint, the existing grade, and drainage paths. This step determines whether the site needs minor slope correction or full excavation, and it prevents scope surprises once ground work begins.
Clearing and excavation remove obstacles, organic material, and unstable soil down to a stable subgrade. Base material is then placed and compacted in lifts to meet the density the concrete or asphalt layer above it requires. A surface drainage slope of at least 1 percent is established at this stage; correcting it after the base is poured is significantly more disruptive and costly.
Coastal and inland microclimates across the county affect how soil drains and settles, so drainage planning is site-specific rather than standard. Once compaction is confirmed, the site is ready for base layer installation. The written estimate itemises each preparation task, grading, excavation, compaction, and drainage provision, separately so the scope is clear before any surface work is scheduled.