http://leginfo.legislature.ca.gov/faces/codes_displayText.xhtml?lawCode=CIV&division=4.&title=&part=5.&chapter=5.&article=3.
CIVIL CODE – CIV
ARTICLE 3. Maintenance [4775 - 4790]
(a) (1) Except as provided in paragraph (3), unless otherwise provided in the declaration of a common interest development, the association is responsible for repairing, replacing, and maintaining the common area.
(2) Unless otherwise provided in the declaration of a common interest development, the owner of each separate interest is responsible for repairing, replacing, and maintaining that separate interest.
(3) Unless otherwise provided in the declaration of a common interest development,
[the OWNER of each separate interest is responsible for MAINTAINING the “exclusive use common area" appurtenant to that separate interest
and the association (HOA) is responsible for REPAIRING and REPLACING "the exclusive use common area."]