Bolthole Index

Santa Barbara County, California

Building permits, zoning and land rules in Lompoc, California

Lompoc, California requires building permits for building work unless a specific exemption applies.1 Lompoc’s Building and Safety Division handles building applications, while the city’s Planning Division reviews development for compliance with the municipal code.23 In Santa Barbara County, every new or replacement septic system needs a local or Central Coast Water Board permit; we could not confirm the local septic authority for an address inside Lompoc, so ask city Planning and County Environmental Health Services before relying on septic.4

At a glance

Building permits
Required for building work, with specific exemptions for qualifying minor structures1
Zoning and development review
City Planning reviews development; residential standards vary by district35
Septic systems
New or replacement systems require a local or Water Board permit; confirm the city-address authority4
RV living
State rules generally limit residential RV occupancy to approved parks unless a local ordinance allows otherwise; ask Lompoc Planning about private land6
Tiny homes
An approved housing or vehicle classification and an approved location are required7
Owner-builder
California’s qualifying contractor-license exemption does not waive building permits or inspections8
Floodplain development
City development permit required before work in mapped special flood hazard areas9

Who to call

Building permits

City of Lompoc Building and Safety Division

City building applications, plan review and building inspections; inspection request line: 805-875-8231

805-875-8220

[email protected]

Planning & zoning

City of Lompoc Planning Division

City land-use and development review, planning applications and zoning questions

(805) 875-8275

[email protected]

Roads & driveways

City of Lompoc Public Works Engineering Division

City public-right-of-way encroachment permits; ask the City Engineer about city floodplain development review

(805) 875-8269

[email protected]

Septic permits

Santa Barbara County Environmental Health Services, Liquid Waste Program

County OWTS program; ask whether Environmental Health Services administers septic approval for the specific Lompoc address

Contact details are copied from each office’s official page and were checked against it on October 11, 2026.

Off-grid gear

Going off-grid in Lompoc means bringing your own water and power. The kit we’d start with:

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Do you need a building permit in Lompoc, CA?

Lompoc requires a building permit for building work unless an enumerated exemption applies, and the city has adopted the 2025 California construction codes with local modifications.110 A one-story detached residential tool or storage shed, playhouse or similar accessory structure can be exempt when its floor area is no more than 120 square feet; that exemption does not authorize violations of other city laws or ordinances.1 Do not treat the shed exemption as permission to occupy a small dwelling: California requires a tiny home to meet an approved classification and location requirements.7 California’s owner-builder exemption concerns contractor licensing and does not remove local building-permit or inspection obligations.8

Who handles Lompoc building applications, inspections and fees?

Contact Lompoc’s Building and Safety Division at 805-875-8220 or [email protected]; the building counter is available by appointment Monday through Thursday.2 Lompoc accepts digital building applications and performs plan review before issuing building permits.2 The Planning Division identifies Citizen Self Service for Permits and Licenses as the submission system for building applications and planning applications.3 Request a building inspection through the portal or the division’s inspection line, 805-875-8231, and keep stamped, approved plans on the job site for the inspector.2 Lompoc City Council establishes construction-code fees by resolution; ask the Building and Safety Division for the applicable current fee tables rather than budgeting from a single flat fee.11

Does Lompoc have zoning, and what standards shape a home?

Lompoc’s Planning Division reviews residential development for consistency with the General Plan, municipal code and city policies.3 Start by asking Planning to identify the parcel’s residential district and applicable development standards.3 Lompoc’s maximum lot coverage is 40% in 10-R-1 and 60% in 7-R-1; those figures belong to those districts, not every residential parcel.5 Primary buildings in RA are limited to 35 feet or 2 stories, whichever is less, while R-1 primary buildings have a 30-foot limit.12 Ask Planning for the parcel’s setbacks, minimum lot size and any minimum dwelling-size requirement before commissioning a layout.3 California’s efficiency-unit provision depends on a local adopting ordinance, so the statewide provision alone does not establish an approved small-home size in Lompoc.13

How do septic permits and private wells work inside Lompoc?

Every new or replacement septic system in Santa Barbara County requires a permit from the local jurisdiction or the Central Coast Water Board.4 The County’s Environmental Health Services has an OWTS program that includes permitting, inspection and reporting, but we could not confirm which local agency administers septic approval inside Lompoc city limits; ask city Planning and Environmental Health Services to identify the authority for the address.143 Systems in Santa Barbara County jurisdiction that do not meet the approved Local Agency Management Program or applicable statewide conditions may need Central Coast Water Board approval.15 For a proposed private well, California requires a permit from the applicable local environmental health agency or water district before construction, modification or destruction; confirm the local agency with Lompoc before arranging drilling.16

Can you live in an RV or tiny home on land in Lompoc?

California generally limits residential RV occupancy to mobilehome parks or special occupancy parks unless a local ordinance allows otherwise, and RVs are not intended as permanent dwellings.6 We could not confirm Lompoc’s rule for long-term RV living or temporary camping on a private parcel; ask the Planning Division about the proposed use and address before using an RV as construction-period housing.3 California requires a tiny home to comply with an approved classification, such as a code-built home, manufactured home or recreational vehicle, and requires an approved location for that classification.7 Ask Lompoc Planning which land-use approval applies to the proposed unit, then ask Building and Safety about the construction requirements.32

What are the steps to building a home in Lompoc?

  1. Give Lompoc Planning the parcel address and proposed use, and ask for the district standards and required development review.3
  2. Ask city Planning to confirm sewer and water arrangements, or identify the septic and well authorities before designing an independent system.316
  3. Ask the City Engineer whether the site lies in a mapped special flood hazard area: Lompoc requires a development permit before construction or other development begins there.9
  4. Submit the building application and plans digitally to Building and Safety for review and obtain the required building permit before work.217
  5. Obtain a city encroachment permit for work in the public right of way and schedule building inspections with approved plans available onsite.182

For land outside city limits, use the Santa Barbara County guide: the County’s building-permit requirements apply to unincorporated land.19

Watch-outs

  • Lompoc’s small-accessory-structure building-permit exemption does not authorize violations of other laws or ordinances.1
  • Work in Lompoc’s public right of way needs a city encroachment permit.18
  • Lompoc’s fire-code provisions require applicable permits and associated inspections before occupancy for buildings and systems subject to those provisions; ask Building and Safety for the complete occupancy sign-off requirements for the proposed home.202

Sources

  1. Chapter 15.04 Construction Regulations (Lompoc), quoted and re-checked
  2. City of Lompoc Building and Safety Division (cityoflompoc.com)
  3. City of Lompoc Planning Division (cityoflompoc.com)
  4. Septic System (Onsite Wastewater Treatment Systems, OWTS) Permit Information, quoted and re-checked
  5. Section 17.208.040 Residential Zones Development Standards (Lompoc), quoted and re-checked
  6. hcd.ca.gov (California statewide rule), quoted and re-checked
  7. Information Bulletin 2016-01: Tiny Homes (California statewide rule), quoted and re-checked
  8. California Business and Professions Code Section 7044 (California statewide rule), quoted and re-checked
  9. Section 15.48.070 Administration (Lompoc), quoted and re-checked
  10. Section 15.03.010 Adoption of construction codes (Lompoc), quoted and re-checked
  11. Section 15.02.010 Fees (Lompoc), quoted and re-checked
  12. Section 17.208.040 Residential Zones Development Standards (Lompoc), quoted and re-checked
  13. California Health and Safety Code Section 17958.1 (California statewide rule), quoted and re-checked
  14. Santa Barbara County Environmental Health Services, Liquid Waste Program (countyofsb.org)
  15. Septic System (Onsite Wastewater Treatment Systems, OWTS) Local Agency Management Plans, quoted and re-checked
  16. Well Standards (California statewide rule), quoted and re-checked
  17. Do I need a building permit for my project? (California statewide rule), quoted and re-checked
  18. City of Lompoc Public Works Engineering Division (cityoflompoc.com)
  19. Building Code, quoted and re-checked
  20. Chapter 15.04 Construction Regulations (Lompoc), quoted and re-checked

Written October 11, 2026 from the rules quoted below, each taken from an official source and re-checked by an independent reviewer. This is research, not legal advice: rules change, so confirm with the office before you buy or build.

Answers from the rulebook for Lompoc

Lompoc’s own rules

  • Building permitRequired

    Building work inside Lompoc city limits other than enumerated exemptions.

    • One-story detached residential accessory structures used as tool or storage sheds, playhouses, and similar uses are exempt when no more than 120 square feet.
    • Fences not over 7 feet are exempt, subject to the code's egress exception.
    • Certain retaining and non-retaining walls no more than 4 feet are exempt, subject to surcharge and liquid-impoundment exceptions.
    • Exemption does not authorize violation of other laws or ordinances.

    maximum exempt accessory-structure floor area: <= 120 square feet (one-story detached residential accessory structures used as tool and storage sheds, playhouses, and similar uses)

    “105.2 Work exempt from permit. Exemptions from permit requirements of this code shall not be deemed to grant authorization for any work to be done in any manner in violation of the provisions of this code or any other laws or ordinances of this jurisdiction. Permits shall not be required for the following:”
  • Building code adoptedAdopted

    Construction inside Lompoc city limits.

    • The City adopted the listed 2025 California construction codes, including chapters, sections, and appendices not adopted by State agencies.
    • The City also modifies and supplements the adopted California Building and Residential Codes through Chapter 15.04.

    code edition: 2025 (California Building, Residential, Electrical, Mechanical, Plumbing, Energy, Historical, Fire, Existing Building, Green Building Standards, and Wildland-Urban Interface Codes)

    “Eleven documents, each of which are on file in City offices, marked and designated as: (1) the 2025 edition of the California Building Code (Volumes 1 and 2) published by the International Code Council; (2) the 2025 edition of the California Residential Code published by the International Code Council;”
  • InspectionsRequired

    Buildings and systems subject to the City's fire-code permit and inspection provisions inside Lompoc city limits.

    • The fire code official must issue the permit and conduct associated inspections before occupancy.
    • Appliances, devices, equipment, and systems may not be operated or used until approved and permitted.
    “The building or structure shall not be occupied prior to the fire code official issuing a permit and conducting associated inspections indicating that applicable provisions of this code have been met.”
  • Subdividing landRegulated (with conditions)

    Subdivisions inside Lompoc city limits.

    • Title 16 contains subdivision provisions and references the California Subdivision Map Act.
    • Building-permit, violation, deed, certificate-of-compliance, review-board, variance, and tentative-map provisions appear in the title.
    “§ 16.04.010 Subdivision Map Act. § 16.04.020 Building Permits. § 16.04.030 Violation Prohibited. § 16.04.040 Deeds Voidable—Certificate of Compliance.”
  • Building in a floodplainRequired

    Construction or other development within mapped areas of special flood hazard inside Lompoc city limits.

    • A development permit is required before construction or other development begins in an area of special flood hazard.
    • Applications may require scaled plans, elevations, certifications, and descriptions of watercourse alterations.
    • The City Engineer administers and enforces the chapter.
    • Residential lowest-floor elevation standards differ by flood zone, including AO and A zones.
    “A development permit shall be obtained before any construction or other development begins within any area of special flood hazard established in Section 15.48.060(B).”
  • Permit feesVariable (with conditions)

    Fees for codes adopted in Title 15 inside Lompoc city limits.

    • The City Council establishes fees by resolution.
    • The applicable resolution tables must be consulted for current amounts; no numeric fee was located in the code chapter opened.
    “Fees required by the adopted Codes set forth in this Title shall be established by resolution of the Lompoc City Council, and referenced by the appropriate Tables in that resolution.”

Rules another office applies inside Lompoc

Lompoc does not set these itself; the county, a health district or the state does, and they apply to every address inside its limits.

  • Lot coverageSpecified

    R-1 residential standards inside Lompoc city limits.

    • The table shows 40% maximum for 10-R-1 and 60% maximum for 7-R-1.
    • Other residential zones have separate standards.

    maximum lot coverage: <= 40 percent (10-R-1) · maximum lot coverage: <= 60 percent (7-R-1)

    “Lot Coverage (max.) | - | 40% | 60% | 70% | -”
  • Building heightSpecified

    RA and R-1 residential zones inside Lompoc city limits.

    • RA primary-building height is 35 feet or two stories, whichever is less.
    • R-1 primary-building height is 30 feet.
    • Accessory-building height is 20 feet in the listed residential columns.

    maximum primary-building height: 35 ft. or 2 stories, whichever is less (RA) · maximum primary-building height: 30 feet (R-1) · maximum accessory-building height: 20 feet (RA and R-1)

    “Height (max.) - Primary Building | 35 ft. or 2 stories, whichever is less | 30 ft. | 30 ft. | 35 ft. | - Height (max.) - Accessory Building | 20 ft. | 20 ft. | 20 ft. | 20 ft. | -”

Still unanswered

We looked and could not find an official answer yet. Silence is not permission; ask Lompoc or Santa Barbara County directly.

  • Owner-builder exemption — Owner-builder exemption from Lompoc building-permit or inspection requirements.
  • Certificate of occupancy — General certificate-of-occupancy requirements inside Lompoc city limits.
  • Minimum dwelling size — Residential dwellings inside Lompoc city limits.
  • Living in an RV — Residential or long-term RV occupancy on private land inside Lompoc city limits.
  • Camping on your land — Temporary camping on private land inside Lompoc city limits.
11 more unanswered
  • Tiny homes
  • Manufactured homes
  • Who permits septic
  • Septic permit
  • Septic inspection
  • Off-grid sanitation
  • Well permit
  • Mandatory utility hookup
  • Agricultural exemption
  • Driveway access
  • Short-term rentals

Each answer was extracted from an official source and independently re-checked against that source by a second reviewer. That is an evidence check, not legal advice. Rules change; confirm with the authority before you buy or build.

Unanswered questions are usually a sign that Lompoc publishes no rule on the point, not that none exists. Santa Barbara County’s page lists the county offices to call.

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