California Codes, Civil Code - CIV, Division 4 — General Provisions, Part 6 — Works of Improvement, Title 1 — Works of Improvement Generally, Chapter 1 — General Provisions, Article 1 — Definitions, Section 8042
“Site improvement” means any of the following work on real property:
(a) Demolition or removal of improvements, trees, or other vegetation.
(b) Drilling test holes.
(c) Grading, filling, or otherwise improving the real property or a street, highway, or sidewalk in front of or adjoining the real property.
(d) Construction or installation of sewers or other public utilities.
(e) Construction of areas, vaults, cellars, or rooms under sidewalks.
(f) Any other work or improvements in preparation of the site for a work of improvement.
Notes
Defines “site improvement” to include specified real-property work such as demolition or vegetation removal, test-hole drilling, grading or filling, adjoining street or sidewalk work, sewer or utility construction, underground sidewalk spaces, and other work or improvements undertaken in preparation of the site for a work of improvement.
Use as reference
Lexinter.net | California Code, Civil Code - CIV § 8042 | https://laws.lexinter.net/codes/california/civil-code/division-4/part-6/title-1/chapter-1/article-1/section-8042