Do you have wall siding that is in contact with concrete? This is a common site of water penetration and long term can lead to hidden damage in the wall framing. There needs to be a gap between wall siding and any contact with concrete or earth to allow water to drain. If this isn't possible, flashing needs to be installed to help with water shedding.
These pictures show a wall where the siding that was in contact with the concrete patio has been removed for further investigation. The siding showed signs of rot and the wall framing behind looks to have been in contact with water for awhile. The sill plate and rim joist (important framing pieces) are rotted out from the long term presence of water. This homeowner will need to consider some extensive repairs. The sill plate and rim joist need to be cut out and replaced with sound wood.
Brian Jovag, owner of Jovag Home Inspection.