In most 1970s houses, foundations will be in good condition. But in some remedial action will be needed to deal with problems such as uneven floors and inadequate earthquake bracing.
Houses of this era typically had suspended floors supported by piles and a perimeter wall, or a concrete floor slab, or a combination of both. Read more.
See concrete masonry for details of concrete block construction used for some foundation walls.
Most foundations will be in good condition, though some may lack adequate earthquake bracing. Check for unevenness, moisture and other signs of damage or deterioration. Read more.