Torrance — Nonconforming Uses

Last reviewed: July 3, 2026

Overview

This page summarizes what the Torrance Municipal Code (TMC) says about nonconforming uses, nonconforming buildings/structures, and the limits on repairing, restoring or enlarging nonconforming development in Torrance. The rules are contained in Article 22 of the Zoning Code (Division 9) and apply city‑wide; special overlay districts may add or supersede standards in limited places. For quick reference to the city’s land‑use framework see the city’s Torrance Zoning and Torrance Land Use pages.

NOTE: This page stays strictly focused on the zoning/planning ordinance. For building‑code compliance (Title 24) consult the California Building Standards Code. For related topics you’ll see inline links to Torrance pages for parking, development standards, design review, overlay districts, and ADUs where those topics appear in the ordinance text.

What the Torrance Zoning Code says (plain-English synthesis)

• Definitions: A nonconforming use is a lawful use that would not be permitted under the property’s current zone; a nonconforming building or structure fails one or more development standards (setbacks, height, parking, landscaping, etc.) that applied after it was built; an illegal nonconforming use/structure never complied with the rules. These definitions are in § 92.22.1 .

• Continuation / Abandonment: A lawful nonconforming use may continue indefinitely unless it is interrupted. Any interruption of the use for 90 days causes it to be deemed abandoned (i.e., the right to continue is lost) — see § 92.22.3(a)(2) .

• No Enlargement or Extension: A nonconforming use may not be enlarged, extended, or moved into additional portions of a building or onto other land if doing so displaces a conforming use or occupies new premises — see § 92.22.3(b)(1–2) .

• Maintenance & Repairs: Ordinary maintenance and repairs are allowed so long as they do not increase the nonconforming nature of the building or structure; required repairs to protect public health and safety are explicitly permitted — see § 92.22.3(b)(3) .

• Repair / Reconstruction after Damage: A damaged nonconforming building on the same lot may be repaired or reconstructed if the cost of structural repairs does not exceed 50% of the replacement cost at the time of damage. If damage exceeds 50% of replacement cost, rebuilding must comply with current district regulations (with narrow exceptions for some multi‑family buildings) — see § 92.22.4(a) .

• Abatement and Illegal Nonconforming Uses: The Article does not prevent enforcement against public nuisances or against illegal (never‑lawful) nonconforming uses or structures; the City can abate such uses under nuisance provisions — see § 92.22.2 .

• Interaction with ADU permitting: The Torrance ADU rules reiterate state law protections — an ADU permit application shall not be denied solely because of correction of nonconforming zoning conditions or unrelated building‑code violations that do not threaten health and safety or are not affected by the ADU construction — see § 92.2.10 (ADU provisions) and the ADU text in the code for details (TMC § 92.2.10) file.

• Variances and waivers remain available (discretionary relief from strict code requirements) under the variance articles of Division 9; nonconforming exceptions are handled in relation to those provisions where applicable — see the variance articles §§ 94.1.1 et seq. and Article 7 references file.

Citywide decision‑relevant table (most used rules for applicants)

District‑by‑district breakdown (purpose, typical uses, key dimensional standards, where applied)

Notes: the nonconforming rules above apply citywide (Article 22). The zones below are the TMC district names; the short “purpose” and typical uses are taken from the code’s district list and applicable articles. For full use tables and precise dimensional charts consult the Zoning map and the Torrance Development Standards page and the ordinance sections cited below.

R-1 — Single family residence district

• Purpose / typical uses: Single‑family residences (detached homes). See zone list § 91.3.2 .
• Key dimensional standards (examples in the code): minimum lot area and widths referenced elsewhere (minimum lot area 6,000 sq ft, interior lot width 50 ft, exterior lot width 60 ft appear in the Lot Dimensions provisions) — see § 91.10.10 .
• Where it applies: city neighborhoods mapped on the Official Land Use Plan; areas annexed default to R‑1 until rezoned § 92.9.1 .
• Nonconforming interaction: preexisting nonconforming uses on an R‑1 lot follow Article 22 limits (90‑day rule, no enlargement, repairs rules) § 92.22.1–.4 file.

R-2, R-3, R-R-3, R-4, R-5 — Two‑family and multiple‑family residence districts

• Purpose / typical uses: Two‑family, multiple‑family dwellings, apartments. See district list § 91.3.2 .
• Key dimensional standards: multiple‑family minimum open space, rear yard (10 ft for residences/apartment houses in some zones) and building separation standards are set in the code — see § 91.10.6, § 91.10.7, and related articles .
• Nonconforming interaction: same citywide Article 22 rules apply; special exceptions for reconstruction of multiple‑family buildings damaged >50% are described in § 92.22.4(a)(2) (limited ability to reconstruct under prior zoning if certain conditions are met) .

C-1, C-2, C-3, C-4, C-5, C-R — Commercial districts

• Purpose / typical uses: Retail, services, restaurants, offices (permitted and conditional uses vary by C‑zone) — see use tables in Division 9 and the district list § 91.3.2 .
• Key dimensional standards: commercial/industrial setbacks from highways and frontage rules (e.g., 40–50 ft centerline setbacks for secondary/major highways) are in § 92.7.2 and § 92.7.4 .
• Nonconforming interaction: Nonconforming commercial uses can continue under Article 22 but cannot be enlarged or extended per § 92.22.3 .

M-1, M-2, M-L — Manufacturing / industrial districts

• Purpose / typical uses: Light and heavy manufacturing, certain nonresidential operations; permitted uses vary (see Division 9). Listed in § 91.3.2 .
• Key dimensional standards: setbacks, landscaping, and parking standards for industrial uses appear throughout Articles on parking and landscaping; parking standards are applied with possible exclusions in M‑1/M‑2 under landscaping rules § 93.6.6–.7 .
• Nonconforming interaction: industrial nonconforming structures are subject to the same repair/reconstruction and no‑enlargement rules in Article 22 § 92.22.3–.4 file.

P-D — Planned Development District

• Purpose: Site‑specific development regulated by an approved Development Plan; permissible uses are those in the General Plan and the approved plan § 91.42.1 and development standards follow the approved plan § 91.42.2 .
• Nonconforming interaction: P‑D projects follow the development plan standards; nonconforming structures within a P‑D still fall under Article 22 unless the P‑D plan states otherwise § 91.42.2 and Article 22 § 92.22.1–.4 file.

Overlay districts (samples)

• Housing Corridor Overlay (HCO) — the overlay lists permitted uses that often keep underlying base‑zone uses while adding special rules (Table 91.51.040‑1); where the HCO is silent the base zone controls § 91.51.040 . Overlay rules can explicitly state whether existing buildings are deemed nonconforming for overlay standards.

• Torrance Tract Overlay Zone — applies to a historic neighborhood and imposes requirements for contributing residential structures; overlay requirements can be more restrictive than the base zone (the overlay explicitly states underlying zones remain in effect except where overlay is more restrictive) § 91.49.010–.030 .

• Religious & Higher Education Institution Housing Overlay (RHEIH‑OZ) — provides alternative development standards; the code explicitly says “Existing structures shall not be deemed nonconforming for not meeting the standards of the Religious Institution Housing Overlay Zone” § 91.52.050 .

For a full list of district names and short descriptions see the official district list § 91.3.2 and consult the city’s Torrance Overlay Districts page for maps and overlay rules.

Checklist — what an applicant (or property owner) must satisfy when dealing with nonconformity

• Demonstrate the use or structure was lawfully established before the current regulation (document chain-of-title, old permits, dated photos) — nonconforming definitions § 92.22.1 .
• Show continuous operation (no interruption > 90 days) if relying on continuation rights — § 92.22.3(a)(2) .
• For repairs after damage, provide a replacement‑cost estimate and cost breakdown to determine whether repairs exceed 50% of replacement cost — § 92.22.4(a) .
• If proposing changes, confirm the proposal does not enlarge or extend the nonconforming use (no new occupied area beyond what was lawfully used) — § 92.22.3(b) .
• Check overlay district rules and whether the overlay treats existing structures as nonconforming or not (e.g., RHEIH‑OZ expressly exempts existing structures from being deemed nonconforming to overlay standards) — relevant overlay §§ 91.49, 91.51, 91.52 filefile.
• If proposing an ADU, verify Torrance ADU rules and state ADU law protections: ADU review cannot be used to require unrelated correction of nonconforming zoning conditions that do not threaten health or are not affected by the ADU construction — TMC ADU provisions § 92.2.10 and related ADU provisions file.
• If relief is needed (e.g., you must rebuild beyond the 50% threshold), prepare a variance or conditional use application as appropriate and follow public‑hearing procedures § 94.1.1 et seq. .
• Coordinate with planning staff and consider pre‑application review to confirm which sections of Article 22 apply and whether exceptions exist.

Risks & Ambiguities

Plain‑English summary

If your property in Torrance was lawfully built or used under older rules but doesn’t meet today’s zoning standards, you can usually keep using it — but you cannot expand it, and if the use stops for 90 days you lose the right to continue; if a nonconforming building is more than 50% destroyed you generally must rebuild to current rules. See the ordinance definitions and the nonconforming use and repair rules §§ 92.22.1–.4 file.

Source References

• Torrance Municipal Code, Article 22 — NONCONFORMING USES, BUILDINGS OR STRUCTURES: § 92.22.1–92.22.4 filefile
• Torrance Municipal Code, Districts established (table of zoning districts): § 91.3.2
• Lot dimensions, yards, and related residential standards: § 91.10.6, § 91.10.10
• Front/side street setbacks and commercial highway setbacks: § 92.7.2, § 92.7.4
• P‑D Planned Development District: § 91.42.1–.4
• Housing Corridor Overlay Zone (HCO) permitted uses table: § 91.51.040
• Torrance Tract Overlay Zone: § 91.49.010–.040
• Religious & Higher Education Institution Housing Overlay Zone: § 91.52.040–.080
• Variance procedures (Discretionary relief): § 94.1.1 et seq.
• ADU provisions and nonconforming rules in Torrance Zoning (TMC ADU section, including permit review protections): § 92.2.10 and ADU text file
• Guidance on ADU law and nonconforming zoning conditions (California ADU handbook, 2025): 2025 ADU handbook (guidance on nonconforming zoning and ADUs)

(For process, forms and parcel‑specific confirmation contact Torrance Community Development; verify with the jurisdiction for parcel‑level application of overlays and for interpretation of replacement‑cost calculations.)

Retrieved passages

• Torrance Zoning Code (Article pertaining) High relevance show source text
• Torrance Zoning Code (ARTICLE 22) High relevance show source text
• Torrance Zoning Code (article does) High relevance show source text
• Torrance Zoning Code (Chapter pursuant) Medium relevance show source text
• Torrance Zoning Code (ARTICLE 7) Medium relevance show source text
• Torrance Zoning Code (Chapter 6) Medium relevance show source text
• Torrance Zoning Code (§ 66314) Medium relevance show source text
• CBC § 92.2.10 (Section 92.2.10.) Medium relevance show source text
• Torrance Zoning Code (§ 66333) Medium relevance show source text
• Torrance Zoning Code Medium relevance show source text
• Torrance Zoning Code (Article 7) Medium relevance show source text
• Torrance Zoning Code (ARTICLE 49) Medium relevance show source text
• Torrance Zoning Code (Article 2) Medium relevance show source text
• Torrance Zoning Code (Section 91.52.070) Medium relevance show source text
• Torrance Zoning Code (Section 91.41.9) Medium relevance show source text

Cited sections

• Torrance Municipal Code, Article 22 — NONCONFORMING USES, BUILDINGS OR STRUCTURES: **§ 92.22.1–92.22.4** filefile (Article 22)
• Torrance Municipal Code, Districts established (table of zoning districts): **§ 91.3.2** (§ 91.3.2)
• Lot dimensions, yards, and related residential standards: **§ 91.10.6**, **§ 91.10.10** (§ 91.10.6)
• Front/side street setbacks and commercial highway setbacks: **§ 92.7.2**, **§ 92.7.4** (§ 92.7.2)
• P‑D Planned Development District: **§ 91.42.1–.4** (§ 91.42.1)
• Housing Corridor Overlay Zone (HCO) permitted uses table: **§ 91.51.040** (§ 91.51.040)
• Torrance Tract Overlay Zone: **§ 91.49.010–.040** (§ 91.49.010)
• Religious & Higher Education Institution Housing Overlay Zone: **§ 91.52.040–.080** (§ 91.52.040)
• Variance procedures (Discretionary relief): **§ 94.1.1 et seq.** (§ 94.1.1)
• ADU provisions and nonconforming rules in Torrance Zoning (TMC ADU section, including permit review protections): **§ 92.2.10** and ADU text file (§ 92.2.10)
• Guidance on ADU law and nonconforming zoning conditions (California ADU handbook, 2025): 2025 ADU handbook (guidance on nonconforming zoning and ADUs)
• Torrance_ZoningCode.md
• 2025 California ADU handbook.md