The steeper the slope- the greater the force of Gravity.
I always recommend to get a Geological Inspection for hillside properties. Hillside properties have gravity working against them, so it is important to ensure that the geological conditions of the lot are stable. A house is only as good as the foundation it is built on, and a foundation is only as good as the bedrock it rests on top of.
If the property has or has had a geological problem in the past like a Landslide, Slope Failure, Erosion, Creep, Collapsed Retaining wall, etc, these are expensive and can cost in the $100,000’s of dollars and could make the property unmarketable!
A GEO inspection protects you from buying a property with a known or observable Geological defect.
GEO inspections have two parts:
(1) Site Visit: the geologist and visual inspection of the property.
(2) Research: the geologist reviews city records and reports including building permits, previous soils tests, grading reports, historic landslide information, proximity to active faults, and geological bedrock survey maps.
At the end of the inspection, the geologist will write a report that summarizes all of their findings.
Geological Inspections do not include testing. The purpose of a GEO is to satisfy the buyer’s due diligence during escrow and not to be used for obtaining approval of building plans. No testing keeps cost down- a GEO inspection is 1/3 to 1/5 of the cost of a Soils test.