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Lompoc · Building on your lot

Building on a hillside in Lompoc

Lompoc's own rules on building on a hillside, with the code text for every value.

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Each rule below links to the section of the Lompoc Municipal Code it was read from, with the code text one click away (checked October 2026). General information, not legal advice.

What Lompoc's code says

Lompoc code What Lompoc's code adds
Soils or geology report
  • A geotechnical report is required before Architectural Design and Site Development Review.
    Applies: Any development on slopes greater than 20%.
    § 17.304.060 · code text
    Prior to Architectural Design and Site Development Review, the review authority shall require geotechnical reports, grading plans, and drainage plans for any development on slopes greater than 20%.
Grading and retaining walls
  • No cut higher than 16 feet from top to toe.
    Applies: Development on slopes of 20% or greater.
    § 17.304.060 · code text
    No cuts greater than 16 feet in height from top to toe shall be allowed.
  • Cut slopes no steeper than 2 horizontal to 1 vertical.
    Applies: Development on slopes of 20% or greater, unless soils and geological studies show a steeper cut is necessary.
    § 17.304.060 · code text
    Cut slopes shall not exceed two horizontal to one vertical unless determined to be necessary by soils and geological investigations;
When hillside rules apply
  • Slopes of 20% or greater.
    Applies: Hillside standards cover all grading and development there; slopes over 20% need design review before a building or grading permit.
    § 17.304.060 · code text
    This Section implements the goals and policies of the General Plan and sets specific standards for all grading and development on slopes of 20% or greater.

Who this affects

HomeownersContractorsDesigners

Frequently asked questions

What extra rules apply to a hillside lot in Lompoc?

Lompoc's code: Slopes of 20% or greater. (Hillside standards cover all grading and development there; slopes over 20% need design review before a building or grading permit.) (§ 17.304.060); No cut higher than 16 feet from top to toe. (Development on slopes of 20% or greater.) (§ 17.304.060).

General information, not legal advice.

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Ask GoCodebook how Lompoc's building on a hillside rules apply to your situation and get an answer that cites the section.

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Lompoc Municipal Code — full text