Signal Hill — Zoning

Last reviewed: July 2, 2026

Overview

Signal Hill's zoning rules are codified in its municipal code (Title 20 of the Signal Hill Municipal Code) and organize the city into named districts (base zones, specific-plan districts, overlays and planned development areas) that are shown on the city's official zoning map. The ordinance adopts an Official Zone Map and lists the district symbols and names; many discrete areas are governed instead by site-specific Specific Plan chapters that replace or supplement base-zone standards for those parcels. See the city's zoning overview for context. Signal Hill zoning & planning overview

How the ordinance is organized (quick legal ground)

• The list of zoning districts is set out in § 20.06.010 .
• The Official Zone Map is adopted and made part of the code in § 20.06.020 .
• Commercial/industrial minimum lot sizes and the commercial district height caps are in § 20.20.030 and § 20.20.040 respectively .
• Many geographically‑limited rules are in Specific Plan chapters (for example, SP‑23 and SP‑24), which explicitly apply “to all property shown … on the official zoning map” and may supersede base-zone standards where inconsistent (see the cited SP chapters) .

Note: the local zoning ordinance in Signal Hill is codified under Title 20 (not “Title 17”) — the code excerpts and chapter numbers below reflect Title 20 provisions. Verify with the City for any later retitling or reorganizations. Verify with the jurisdiction.

District-by-district breakdown

Below I treat each district listed in § 20.06.010 with what the code material retrieved actually states. Where the code text that defines permitted uses or dimensional standards for a particular base district was not available in the retrieved materials, I state that explicitly.

Table of districts listed in § 20.06.010: RL, RLM‑1, RLM‑2, RM, RH, CG, CTC, CO, CI, CR, LI, GI, SP‑1, SP‑2, SP‑3, LO, PD‑1, PD‑2, OS. See § 20.06.010 .

RL — Residential low density

• Purpose: Not found in retrieved materials (the code lists the district symbol but the RL-purpose text or a dedicated RL chapter was not present in the retrieved excerpts). Not found in retrieved materials for detailed permitted uses and dimensional tables. See § 20.06.010 .
• Typical permitted uses: Not confirmed in retrieved materials.
• Key dimensional standards: Not found in retrieved materials.
• Where it applies: Shown on the Official Zone Map adopted under § 20.06.020 . Verify with the City for parcel-level mapping.

RLM‑1 and RLM‑2 — Residential low/medium density (1 and 2)

• Purpose and permitted uses: Not found in retrieved materials. See § 20.06.010 .
• Dimensional standards: Not found in retrieved materials. Verify with the jurisdiction.

RM — Residential medium density

• Purpose and permitted uses: Not found in retrieved materials. Verify with the City.

RH — Residential high density

• Purpose and permitted uses: Not found in retrieved materials. (Specific plan chapters for multifamily areas such as SP‑7 and SP‑21 govern certain multi‑family sites — see their chapters for site-specific uses and restrictions) .

CG — Commercial General

• Purpose: Commercial general is listed as a base commercial district in § 20.06.010 .
• Typical permitted uses: The code contains use lists in several commercial-specific chapters (examples in SP or local corridor sections); specific permitted commercial uses for the generic CG district were not in the retrieved snippets. Not found in retrieved materials for a comprehensive CG use table.
• Key dimensional standards: Minimum lot area and dimensions for CG are 20,000 sq ft and 100' x 100' per § 20.20.030; maximum height in commercial districts (CG listed) is 90 ft / 6 stories per § 20.20.040 .
• Where it applies: Shown on the Official Zone Map § 20.06.020 .

CTC — Commercial Town Center

• Typical lot minimum: 20,000 sq ft / 100' x 100' per § 20.20.030 .
• Maximum height: 70 ft / 4 stories per § 20.20.040 .
• Uses: Town-center specific plan districts and other SP chapters (e.g., SP‑23, SP‑24) provide mixed‑use allowances for town‑center areas; those SP chapters explicitly authorize mixed-use residential + commercial and impose their own standards and approval processes (site plan/design review) .

CO — Commercial Office

• Minimum lot area: 20,000 sq ft and minimum dimensions 100' x 100' per § 20.20.030 .
• Height cap (commercial districts): 90 ft / 6 stories per § 20.20.040 .
• Uses / other standards: Not fully enumerated in retrieved materials; check local CO chapter if parcel falls in CO zone.

CI — Commercial Industrial

• Minimum lot area: 20,000 sq ft per § 20.20.030; height cap 90 ft / 6 stories per § 20.20.040 .
• Note: The code allows height increases in commercial districts (except the CR district) via conditional use permit where specific public/parking/landscaping conditions are satisfied; see § 20.20.040 .

CR — Commercial Residential

• Minimum lot area: 6,000 sq ft / 50' x 100' per § 20.20.030 .
• Height cap: 25 ft / 2½ stories per § 20.20.040 .
• CR is treated uniquely: height increases by CUP are not allowed the same way as other commercial districts (see § 20.20.040) .

LI / GI — Light Industrial / General Industrial

• Minimum lot area: 20,000 sq ft / 100' x 100' per § 20.20.030 .
• Height cap: 90 ft / 6 stories per § 20.20.040 .
• Uses and operational limits: Industrial chapters and specific plan chapters (e.g., corridor plans) set use lists and limits; retrieved materials include use restrictions in specific plan chapters but not a complete GI use table.

SP‑1, SP‑2, SP‑3 — Specific Plan districts (Town Center, Hilltop, Town Center West)

• These are placeholders (symbols) for specific-plan districts listed in § 20.06.010; individual SP chapters (for example, SP‑23 Heritage Square, SP‑24 Town Center Northwest, SP‑7, etc.) contain the governing standards, permitted uses, densities, heights, setbacks and design review rules that apply “to all property shown … on the official zoning map.” See representative chapters: § 20.26.020 (SP‑23) and § 20.46.020 (SP‑24) which state applicability and that SP standards prevail over inconsistent base‑zone rules .
• Example specifics (representative): SP‑23 allows mixed‑use commercial + residential and requires Planning Commission site plan and design review for project approval § 20.26.030 . SP‑24 likewise requires planning commission review for mixed‑use projects § 20.46.030 .

LO — Landscape Overlay

• The code lists LO as a landscape overlay district in § 20.06.010 but the retrieved materials did not include the LO chapter text or overlay standards. Not found in retrieved materials for LO-specific requirements. See the overlay districts reference for more about overlays and where to look. Signal Hill Overlay Districts

PD‑1 and PD‑2 — Planned Development areas

• The PD symbols are listed in § 20.06.010; specific PD chapters (if any) provide the governing conditions. In retrieved materials there are multiple PD‑style site-specific chapters (specific plans) that function similarly; the code instructs that SP or PD chapters govern where adopted. Not found in retrieved materials for a consolidated PD‑1/PD‑2 rule set. Verify with the City.

OS — Open Space

• Listed in § 20.06.010; the retrieved materials did not include an OS chapter with permitted uses or limitations. Not found in retrieved materials.

Key decision-relevant standards (table)

(For parcel‑level application of any of the above: always confirm the zoning designation on the Official Zone Map at City Hall; the map is adopted as part of the code in § 20.06.020 .)

How approvals and design review interact with zoning

• Many Specific Plans require site plan and design review by the Planning Commission or Director; for instance, SP‑23 requires Planning Commission review for site plan and design review § 20.26.030 . For design review procedures see the city's design review chapter. Signal Hill Design Review
• Parking requirements referenced in plan chapters point to the parking chapter of the code; parking design and counts are enforced per the city's parking chapter. Signal Hill Parking
• Development standards (setbacks, heights, lot coverage) appear both in base commercial/industrial rules and in individual SP chapters; SP standards explicitly govern sites within the SP boundary. Signal Hill Development Standards

Practical guidance / synthesis (plain-English)

• The ordinance is organized so that the Official Zone Map (filed with the City Clerk) tells you the base district; once you know the district code symbol (for example CR or CG) you consult the corresponding code chapter. For many commercial districts the code gives firm numeric minimums for lot size and height (see § 20.20.030 and § 20.20.040) .
• For many in-town redevelopment parcels, a Specific Plan chapter (an SP designation on the map such as SP‑23 or SP‑24) controls permitted uses, densities, heights, setbacks and design rules and expressly supersedes inconsistent base-zone provisions; treat the SP chapter as the primary rule for those parcels § 20.26.020, § 20.46.020 .
• When the code refers to required yards, setbacks and projections it defers to the general yard rules in § 20.20.050 and other chapter-specific setback tables; check both the base district/numeric table and any applicable specific-plan chapter. Signal Hill Landscaping and Screening

Checklist (what an applicant must satisfy for a typical zoning review)

• Confirm the parcel's zoning symbol on the Official Zone Map (on file at City Hall) § 20.06.020 .
• Determine whether the parcel falls inside a Specific Plan (SP) chapter; if so, use that chapter's use table and development standards (SP chapters govern) .
• Check the district's dimensional standards: lot minimums, height cap and setbacks (commercial district minima are in § 20.20.030 and § 20.20.040) .
• Confirm required parking per the parking chapter and any SP parking rules; prepare the parking layout to the city's standards Signal Hill Parking.
• Identify whether the project needs Site Plan & Design Review and prepare materials accordingly (SP chapters commonly require Planning Commission review) Signal Hill Design Review.
• Check overlays or planned development conditions (LO, PD‑1, PD‑2) and any recorded covenants that run with the land Signal Hill Overlay Districts.
• For ADUs, confirm ADU-specific allowances and any conflict between ADU law and local zoning; consult the city's ADU guidance and state ADU law Signal Hill ADUs and California ADU law.
• For building permit scope, coordinate the zoning approval with code compliance under the California Building Standards (Title 24) California Building Standards Code.

Risks & Ambiguities

Plain-English Summary

Signal Hill's zoning code divides the city into named districts (e.g., CR, CG, CTC, RL, and several SP‑ specific‑plan districts) and adopts an Official Zone Map that controls which rules apply to each parcel; for many redevelopment parcels a Specific Plan chapter provides the operative use, height, setback and design rules and will override conflicting base-zone standards § 20.06.010‑020; § 20.26.020, § 20.46.020 .

Information Gaps

• Full text of base residential district chapters (RL, RLM‑1, RLM‑2, RM, RH) was not present in the retrieved materials; permitted uses, front/rear/side setback tables, lot coverage, FAR and lot area minima for those base residential districts are Not found in retrieved materials.
• The Landscape Overlay (LO) chapter and the PD‑1 / PD‑2 chapters were not included in the retrieved excerpts — their standards are Not found in retrieved materials.
• Parcel‑level zoning map extract (digital map) or the most recent adopted map (post‑1988 updates) are not included — the code references the Official Map on file; you must obtain the current map from City Hall. Verify with the jurisdiction.

Source References

• District list and Official Zone Map adoption: § 20.06.010 and § 20.06.020 .
• Commercial/industrial lot area and height tables and yard definition references: § 20.20.030, § 20.20.040, § 20.20.050 .
• Specific Plan example: SP‑23 (Heritage Square) applicability and review: § 20.26.020‑030 .
• Specific Plan example: SP‑24 (Town Center Northwest) adoption and applicability: § 20.46.020‑030 .
• Representative specific-plan residential chapters (e.g., SP‑13 Cherry Avenue, SP‑21 The Courtyard, SP‑7): see the SP chapter headings and adoption clauses (for example, § 20.33.190, § 20.28.020, § 20.41.1005) .
• Pacificwalk and other specific-plan building heights and setbacks shown in their SP chapters (examples: § 20.38.060) .

Retrieved passages

• Signal Hill Zoning Code (chapter shall) High relevance show source text
• Signal Hill Zoning Code (§ 1) High relevance show source text
• Signal Hill Zoning Code (Chapter 20.52) High relevance show source text
• Signal Hill Zoning Code (chapter shall) High relevance show source text
• Signal Hill Zoning Code (§ 3) High relevance show source text
• Signal Hill Zoning Code (§ 2) High relevance show source text
• Signal Hill Zoning Code (chapter shall) High relevance show source text
• Signal Hill Zoning Code (§ 4) High relevance show source text
• Signal Hill Zoning Code (Chapter 20.52) High relevance show source text
• Signal Hill Zoning Code (§ 1) High relevance show source text
• Signal Hill Zoning Code (§ 2) High relevance show source text
• Signal Hill Zoning Code (§ 2) High relevance show source text

Cited sections

• District list and Official Zone Map adoption: **§ 20.06.010** and **§ 20.06.020** . (§ 20.06.010)
• Commercial/industrial lot area and height tables and yard definition references: **§ 20.20.030**, **§ 20.20.040**, **§ 20.20.050** . (§ 20.20.030)
• Specific Plan example: SP‑23 (Heritage Square) applicability and review: **§ 20.26.020‑030** . (§ 20.26.020)
• Specific Plan example: SP‑24 (Town Center Northwest) adoption and applicability: **§ 20.46.020‑030** . (§ 20.46.020)
• Representative specific-plan residential chapters (e.g., SP‑13 Cherry Avenue, SP‑21 The Courtyard, SP‑7): see the SP chapter headings and adoption clauses (for example, **§ 20.33.190**, **§ 20.28.020**, **§ 20.41.1005**) . (chapter headings)
• Pacificwalk and other specific-plan building heights and setbacks shown in their SP chapters (examples: **§ 20.38.060**) . (§ 20.38.060)
• SignalHill_ZoningCode.md

• Official Signal Hill code library