Lompoc — Design Review

Last reviewed: July 2, 2026

Overview

Lompoc uses a city-level Architectural Design and Site Development Review process to evaluate the appearance, siting, and site-work for new development and significant alterations. The rules (Title 17, Zoning) set when design review is required, who reviews it, the findings that must be made, and special overlays (e.g., hillsides and historic resources) that trigger extra requirements. The controlling provisions appear in Chapter 17.512 (Architectural Design and Site Development Review) and related chapters for historic resources and overlays (§ 17.516; § 17.224) .

Note: this page stays strictly to what the Lompoc zoning code says about design/architectural/site-plan review — for building-safety rules see the California Building Standards Code.

What "Design Review" covers in Lompoc (quick rules)

• Design review is labeled in the Code as Architectural Design and Site Development Review and is required for most new buildings and many exterior changes; exceptions are explicitly listed (§ 17.512.020) .
• The Director hears minor reviews; the Planning Commission hears major reviews and is the decision-maker for large projects (§ 17.512.040) .
• Approval requires specific written findings (consistency with the General Plan, Code standards, design guidelines, compatibility with neighborhood, etc.) (§ 17.512.050) .
• Separate historic‑resource review (Certificate of Appropriateness) applies to landmarks and other protected resources (§ 17.516) .

Where this page uses words like design review, parking, overlays, development standards, ADUs, historic preservation, landscaping and screening, or Title 24 I link each to the City menu pages so you can jump to related topics: the City’s rules for design review are embedded in Title 17; parking and development standards are cross-referenced in the review; overlay requirements live in overlay districts; ADUs are exempt from design review in most cases; historic resources use historic preservation procedures; and landscaping rules are in landscaping and screening. For building-permit technical requirements see California Building Standards Code.

District-by-district (how design review interacts with each zone)

Below are the Lompoc districts where design review commonly matters. For each I summarize purpose, typical permitted uses (high‑level), key dimensional standards that most affect design review, and where these standards appear in the Code.

R-1 — Single-Family Residential

• Purpose / where it applies: the R-1 zone regulates single‑family neighborhoods and is the most common single‑family designation in the city (§ 17.208.040 notes) .
• Typical permitted uses: single‑family homes, accessory structures; a proposed first development on a vacant site will be routed through design review if it is the first development on a vacant site (see general table of uses) .
• Key dimensional standards (most design-review-relevant): minimum lot area 10,000 s.f., front setback 15 ft., side interior typically 5 ft. (or percentage of lot width in some subtypes), primary building height max 30 ft., accessory height 20 ft., lot coverage 40% in 10‑R‑1 variant — see Table 17.208.040.A (§ 17.208.040) .
• Design review trigger/exception: single‑family homes in R-1 are specifically exempt from Architectural Design and Site Development Review (§ 17.512.020) — but note exceptions (e.g., hillside or other overlays may still require review) .

R-2 — Low‑ to Medium‑Density Multi‑Family

• Purpose / where it applies: R-2 supports duplexes and small multi‑family developments (§ 17.208.040) .
• Typical uses: duplexes, small multi‑unit buildings; first development on a vacant site may require Commission review depending on use-table rules .
• Key standards: minimum lot area 6,000 s.f., lot width 50 ft., front setback 15 ft., height max 30 ft., lot coverage up to 60%, minimum landscaped open area 300 s.f./unit (Table 17.208.040.A) (§ 17.208.040) .
• Design review trigger/exception: development projects with six or fewer residential units in R-2 that are not part of a subdivision map are exempt from Architectural Design and Site Development Review (§ 17.512.020) .

R-3 — Higher‑Density Residential / Multi‑Family

• Purpose / where it applies: R-3 is for higher-density apartments and multi-family residential (§ 17.208.040) .
• Typical uses: multi-family residential up to the zone density limits.
• Key standards: lot area min 7,000 s.f., front setback 15 ft., height max 35 ft., lot coverage up to 70%, landscaped open area 250 s.f./unit (Table 17.208.040.A) (§ 17.208.040) .
• Design review trigger/exception: small projects (six or fewer units, not in a subdivision) are exempt; larger buildings will be subject to review and typically by the Commission if they meet the major-review thresholds (§ 17.512.020; § 17.512.040) .

MU — Mixed Use

• Purpose / where it applies: MU encourages pedestrian-oriented infill mixing housing and retail near transit corridors (§ 17.220.020) .
• Typical uses: ground-floor commercial/retail with residential above.
• Key standards important for design review: height up to 45 ft., FAR for mixed use up to 1.5 (with commercial/composition rules), density up to 44 units/net acre and minimums for mixed-use projects (Table 17.220.040.A) (§ 17.220.040) .
• Design review notes: because MU projects affect street character (façade, frontage, build‑to zones), many MU projects meet the Commission thresholds (e.g., new construction ≥ 2,500 s.f.) and require public notice/hearing when classified as major (§ 17.512.040) .

I and BP — Industrial (I) and Business Park (BP)

• Purpose / where it applies: I and BP regulate industrial and business‑park uses; design review applies where new buildings are proposed and accessory uses affect public view or adjacent residential areas (§ 17.216.040) .
• Typical uses: manufacturing, warehousing, flex/office; retail accessory uses are limited.
• Key standards: I lot area min 7,000 s.f., BP min 2 acres; height max 35 ft. (BP has special airport-related limits near the airport), setbacks are typically none to small but 10 ft. is required where new construction adjoins residential uses (Table 17.216.040.A) (§ 17.216.040) .
• Design review notes: outdoor storage and screening standards tie into design review findings (screening required per Chapter 17.312) (§ 17.216.050; § 17.312) .

PF and OS — Public Facilities and Open Space

• Purpose / where it applies: PF is for public & quasi‑public facilities; OS protects open space corridors and creek setbacks (§ 17.220.020; § 17.220.050) .
• Key standards: PF front setback 5 ft. (or 15 ft. when adjacent to residential on same street); OS contains river/creek setbacks (e.g., 100 ft. from Santa Ynez River) that strongly shape site design (§ 17.220.040; § 17.220.050) .
• Design review notes: site work for parks, stormwater, and riparian protection is evaluated under the design review findings to protect natural resources (§ 17.512.050; § 17.304.060) .

Overlay zones (AO, CRO, SO, PD, SEO, HSO)

• Overlays add or change rules that the review authority enforces during design review (Chapter 17.224) — e.g., Airport Overlay (AO) alters height limits, the Cultural Resources Overlay (CRO) adjusts review when archaeology or historic resources exist (§ 17.224.020–050) .
• Design review frequently references overlay standards; where an overlay conflicts with a base zone, the overlay controls (§ 17.224.040) .

Key Code standards and decision rules (summary table)

Checklist — what an applicant must prepare (at minimum)

• Application prepared and filed per Chapter 17.504 (Application Processing Procedures) and the submittal checklist in § 17.512.030 (plans, drawings, materials) .
• Project plans: site plan, elevations, floor plans, materials and color board, landscape plan, grading/drainage plan where applicable (§ 17.512.030; cross‑ref to § 17.304 and Chapter 17.312) .
• For projects on slopes > 20%: geotechnical report, grading plan, drainage plan before Architectural Design & Site Development Review (§ 17.304.060) .
• For projects on sites with potential cultural resources: comply with Cultural Resources Overlay (CRO) procedures and any archaeological survey per Chapter 17.224 (§ 17.224.020) .
• If subject to historic review: submit for Certificate of Appropriateness with photos and documentation of existing character (§ 17.516.020–050) .
• Demonstrate compliance with applicable development standards (setbacks, heights, lot coverage, parking) in the applicable zone table (e.g., Table 17.208.040.A for residential; Table 17.220.040.A for MU/PF/OS; Table 17.216.040.A for industrial) — design review findings require consistency with those standards (§ 17.512.050; § 17.208.040; § 17.220.040; § 17.216.040) .
• Address landscaping and screening requirements per Chapter 17.312 (buffers, parking landscaping) as part of the site plan submission — these are explicitly part of design review expectations (§ 17.312.040) .
• Pay applicable fees and follow noticing requirements if project is Major (see § 17.608 for noticing rules) .

Risks & Ambiguities

Plain‑English summary (for a homeowner)

Most new buildings and many visible changes in Lompoc need an Architectural Design and Site Development Review to make sure the project fits the neighborhood and follows the zoning rules; small home projects and ADUs are usually exempt. The Director handles smaller cases; larger or street‑fronting projects get a public hearing before the Planning Commission. The legal rules and the specific things the reviewer checks are in § 17.512 and the zone tables (e.g., residential Table 17.208.040.A) — verify specifics for your lot with Planning before you sign contracts (§ 17.512.020; § 17.208.040) .

Source References

• § 17.512.010–060 — Architectural Design and Site Development Review: purpose, applicability, application, review authority, findings, post‑decision procedures.
• § 17.512.040 — Major vs Minor review / noticing and hearing rules.
• § 17.512.050 — Findings required to approve design review.
• § 17.516.010–070 — Certificate of Appropriateness (historic resource review and findings).
• Table 17.504.020.A — Review Authority matrix (Director, Commission, Council roles).
• § 17.208.040 / Table 17.208.040.A — Residential Zones Development Standards (R‑1, R‑2, R‑3, etc.).
• § 17.220.040 / Table 17.220.040.A — Other Zones (MU, PF, OS) development standards.
• § 17.216.040 / Table 17.216.040.A — Industrial zones (I, BP) development standards.
• § 17.304.060 — Hillside development, applicability of design review and geotechnical submittal requirements.
• § 17.312.040 — Landscaping and screening requirements tied to site‑plan/design review.
• § 17.608.010 (Table) — Noticing rules (when notice/public hearing is required).

(These references are drawn from the uploaded Lompoc Zoning Code file provided for this analysis; if you need direct City web pages or the official PDF ordinance, verify on the City site or with Planning staff. Not found in retrieved materials: any separate, stand‑alone "City Design Guidelines" document text — the Code references guidelines but the guideline document itself was not among the uploaded files.)

Retrieved passages

• Lompoc Zoning Code (§ 11) High relevance show source text
• Lompoc Zoning Code (Chapter establishes) High relevance show source text
• Lompoc Zoning Code (§ 17.512.040.) High relevance show source text
• Lompoc Zoning Code (§ 11) High relevance show source text
• Lompoc Zoning Code (§ 11) Medium relevance show source text
• Lompoc Zoning Code (§ 11) Medium relevance show source text
• Lompoc Zoning Code (§ 17.548.040.) Medium relevance show source text
• Lompoc Zoning Code (§ 11) Medium relevance show source text
• Lompoc Zoning Code (Section the) Medium relevance show source text
• Lompoc Zoning Code (§ 11) Medium relevance show source text
• Lompoc Zoning Code (§ 11) Medium relevance show source text
• Lompoc Zoning Code (§ 17.208.040.) Medium relevance show source text
• Lompoc Zoning Code (Section 17.304.050.B.) Medium relevance show source text
• Lompoc Zoning Code (§ 11) Medium relevance show source text
• CBC § 11 (§ 11) Medium relevance show source text

Cited sections

• § 17.512.010–060 — Architectural Design and Site Development Review: purpose, applicability, application, review authority, findings, post‑decision procedures. (§ 17.512.010)
• § 17.512.040 — Major vs Minor review / noticing and hearing rules. (§ 17.512.040)
• § 17.512.050 — Findings required to approve design review. (§ 17.512.050)
• § 17.516.010–070 — Certificate of Appropriateness (historic resource review and findings). (§ 17.516.010)
• Table 17.504.020.A — Review Authority matrix (Director, Commission, Council roles).
• § 17.208.040 / Table 17.208.040.A — Residential Zones Development Standards (R‑1, R‑2, R‑3, etc.). (§ 17.208.040)
• § 17.220.040 / Table 17.220.040.A — Other Zones (MU, PF, OS) development standards. (§ 17.220.040)
• § 17.216.040 / Table 17.216.040.A — Industrial zones (I, BP) development standards. (§ 17.216.040)
• § 17.304.060 — Hillside development, applicability of design review and geotechnical submittal requirements. (§ 17.304.060)
• § 17.312.040 — Landscaping and screening requirements tied to site‑plan/design review. (§ 17.312.040)
• § 17.608.010 (Table) — Noticing rules (when notice/public hearing is required). (§ 17.608.010)
• Lompoc_ZoningCode.md

• Official Lompoc code library