ADU Soils & Foundation Investigation in Atherton, CA

Atherton's housing production is now dominated by ADUs -- 45 of 60 approved homes in the most recent reporting year. Large lots and strict objective design standards mean the geotechnical scope needs to anticipate careful plan review from the start.

AK Geotech's Atherton investigations are scoped around the town's design review process and the scale typical of Atherton properties: larger footprints, more extensive site grading, and often more complex drainage than a standard suburban lot. We coordinate our foundation recommendations with your architect and civil engineer so the geotechnical report supports the design rather than forcing late changes.

Because Atherton allows ADUs up to the state's generous size limits, foundation loads and site drainage deserve more scrutiny than a minimal accessory structure would need. Our reports cover bearing capacity, expansive soil evaluation (common in parts of San Mateo County), foundation type recommendations, and drainage guidance to keep water away from the new structure and the existing home.

What's included

• Subsurface exploration and soil classification

• Expansive soil evaluation

• Foundation type and bearing capacity recommendations

• Drainage and grading guidance

• Formal geotechnical report for permit submittal

For an ADU soils investigation scoped to your Atherton property, contact AK Geotech.