Local zoning · Fillmore

Fillmore — Nonconforming Uses

Q: What counts as a nonconforming use in Fillmore?

A nonconforming use is a use lawfully established under prior rules that no longer complies because the zoning changed. The code defines these terms and sets administration rules in § 6.04.30 (definitions and purpose).

Q: How long can a nonconforming commercial use continue before the city requires removal?

The city uses an amortization schedule in § 6.04.3015 . For example, a nonconforming use in a structure designed for a permitted use is listed as 10 years in the amortization table; specific categories and exceptions are enumerated in that section.

Q: If I stop operating for a few months, do I lose my nonconforming rights?

Yes — if the nonconforming use is discontinued for 90 consecutive days (or a total of six nonconsecutive months), the right to continue that nonconforming use ends under § 6.04.3010 .

Q: Are single‑family homes exempt from amortization in Fillmore?

Yes. Single‑family residential structures are specifically exempt from amortization under the schedule in § 6.04.3015 .

Q: What happens if my nonconforming structure is more than 50% damaged?

If damage exceeds 50% of replacement cost , repair or reconstruction must conform to current zoning/district standards and the nonconformity is eliminated (treated as a new structure) per § 6.04.3065 ; partial damage less than 50% may be restored if work begins within 90 days.

Nonconforming Uses under the Fillmore local zoning and planning code, with the controlling citations.

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Last reviewed: July 2, 2026

Overview

This page summarizes how the City of Fillmore treats nonconforming uses, nonconforming structures, and nonconforming parcels under the City zoning ordinance (Title 6). It explains the city’s tests for abandonment, amortization timelines, repair/rebuild rules, limited expansion or substitution, and the legalization path for certain illegal nonconformities. Everything below is grounded in the city code; each rule shows the controlling § and the ordinance excerpt used.

Important related topics (linked once where first mentioned): the city’s Fillmore Zoning, the Fillmore Development Standards, Fillmore Parking, Fillmore Design Review, Fillmore Overlay Districts, Fillmore ADUs, and the California Building Standards Code.

What the Fillmore ordinance requires (synthesis)

The ordinance defines nonconforming property, nonconforming structure, and nonconforming use as lawful uses/structures/parcel conditions that no longer comply because of later zoning changes (§ 6.04.30 definitions) .
Nonconformities are allowed to continue but are intended to be eliminated over time (purpose statement) and may be maintained but generally not enlarged or materially altered (§ 6.04.3001; § 6.04.3010) .
Abandonment: a nonconforming use that is discontinued for 90 consecutive days (or a total of six nonconsecutive months) is deemed abandoned and cannot be resumed (§ 6.04.3010) .
Expansion/substitution: limited substitution or minimal expansion of a legal nonconforming use is possible but requires a Minor Conditional Use Permit and specific findings; approvals do not extend any amortization/termination date (§ 6.04.3070; § 6.04.3075) .
Repairs/reconstruction: ordinary maintenance is allowed; major structural alteration exceeding 50% of replacement cost (repair cost test) triggers the need to bring the structure into full compliance (treated as new) unless exceptions apply (§ 6.04.3065) .
Amortization (termination) schedule: the city imposes time limits for bringing certain nonconformities into compliance; the ordinance lists types and corresponding amortization periods (single-family residential structures are exempt from amortization) (§ 6.04.3015) .
Illegal nonconforming structures/uses: they generally must be removed, but the Director can consider legalizing some pre‑1952 illegal uses via a Minor CUP if certain findings (and building/health/safety compliance) are met (§ 6.04.3090) .
Enforcement timeline and procedure: owners receive certified notice with the abatement date, may appeal the amortization classification or length, and the Planning Commission hears extension requests; orders are recorded against the property (§ 6.04.3020–6.04.3055) .

Below are district-specific notes showing where nonconforming issues typically arise and the local standards that interact with nonconforming status.

District-by-district breakdown (how nonconforming rules interact with each district)

Note: The official zoning districts are established in § 6.04.0220; use the official zoning map to locate parcels. Verify parcel-specific status with the Community Development Department.

RPD-R, RPD-L, RPD-M, RPD-M/H, RPD-H (residential series)

Purpose: residential densities from rural to high; intended to preserve neighborhood character and housing density. See the zoning district list in § 6.04.0220 and the development standards in § 6.04.0415.
Typical permitted uses: single-family homes, accessory structures, limited home occupations (permitted/conditional depending on district) — see the residential use tables in the ordinance (Table II‑1) (§ 6.04.0415) .
Key dimensional standards (typical examples from Table II‑1): lot sizes, front/rear/side setbacks, lot width, maximum lot coverage, height limits; these standards are the baseline for whether a structure is nonconforming (§ 6.04.0415 Table II‑1).
Where nonconforming rules matter most: setbacks, lot coverage, and height nonconformities are common. Repairs and modest alterations are allowed but structural changes that exceed the 50% replacement-cost test or that expand the nonconformity are controlled by § 6.04.3065 and § 6.04.3010. Single‑family homes are explicitly exempt from amortization (§ 6.04.3015) — this protects lawful single-family dwellings from forced amortization.

CN (Commercial Neighborhood), CBD (Central Business District), CO (Commercial Office), CH (Commercial Highway)

Purpose: neighborhood retail/office (CN), downtown mixed commercial (CBD), office/service (CO), and highway-commercial services (CH). See § 6.04.0615 for development standards and the use tables.
Typical permitted uses: retail, restaurants, professional offices, limited personal services; use charts identify P / C / D / NP statuses. The CBD has special downtown rules. (§ 6.04.0615 and associated use matrices).
Key dimensional standards (examples): minimum lot area (CN 5,000 sq ft; CH 20,000 sq ft), front setbacks (varies; CH min 10 ft), maximum coverage and heights (typically 35 ft / 2 stories) — see § 6.04.0615 table.
Nonconforming concerns: conversion of downtown or highway commercial buildings to new uses, nonconforming signage, and reuse of older commercial building envelopes. Limited expansions/substitutions are possible only under the minor CUP standards and do not extend amortization dates (see § 6.04.3070–6.04.3075).

BP (Business Park / Business Park District)

Purpose: light industrial, office, and flexible employment uses (see § 6.04.1205—6.04.1215).
Typical permitted uses: warehousing, research & development, light manufacturing in buildings (use chart expressly defines P/C/D statuses) — see BP use table within the code.
Key dimensional standards: internal building setbacks, 45‑ft height maximum (Business Park-specific), landscaped buffers where BP abuts residential, and site plan review requirements (see § 6.04.1215).
Nonconforming concerns: outdoor storage, truck parking, or manufacturing operations that stop complying with newer BP standards — substitution or legalization requires the minor CUP or development permit review; buffers and compatibility requirements may be imposed as conditions.

MPD (Manufacturing/Industrial), P‑F (Public Facilities), O‑S (Open Space), SFIP (South Fillmore Industrial Park Overlay)

Purpose and uses vary (industrial, public, open space, overlay). Overlay zones like SFIP may create parcels that become nonconforming with respect to new base standards — check § 6.04.0220 and relevant overlay sections. Where the overlay changes permitted uses or standards, the nonconforming rules in Chapter 6.04.30 apply.

Key decision-relevant standards (quick reference table)

Topic	Rule / trigger	Code reference
Abandonment of nonconforming use	Use discontinued 90 consecutive days or 6 nonconsecutive months = deemed abandoned (right to resume ends).	§ 6.04.3010
Amortization schedule (examples)	Accessory structures 3 yrs; nonconforming use in a structure designed for permitted use 10 yrs; Type V structures 30 yrs; single‑family residential structures exempt from amortization.	§ 6.04.3015
Repairs & major alteration test	Ordinary repairs allowed; structural alteration >50% of replacement cost → must conform as new (single‑family exempt from this subsection).	§ 6.04.3065
Minimal expansion/substitution	Allowed only with a Minor Conditional Use Permit; must be minimal, not increase detriment, and not extend termination date.	§ 6.04.3070; § 6.04.3075
Illegal nonconforming uses	Illegal uses generally removed; may legalize illegal structures/uses built/started before 1952 via minor CUP if building/health/safety codes met.	§ 6.04.3090
Notice, appeal, hearings	Director mails certified notice, posts property, publishes; owner may appeal amortization classification/length; Planning Commission hearing required for extensions.	§§ 6.04.3020–6.04.3035

Practical guidance / interpretation (plain-English synthesis)

If your building or use became “nonconforming” because the City changed the zoning map or standards, you may continue the use but you cannot enlarge it, switch it to a different nonconforming use, or let it sit idle for long enough to be deemed abandoned (§ 6.04.3010).
Cosmetic repairs and ordinary maintenance are fine; structural alterations that cost more than 50% of the building replacement cost will generally force full compliance with current standards (§ 6.04.3065). Single-family homes have protective carveouts for amortization.
Want to change to a new nonconforming activity or expand slightly? Expect a Minor Conditional Use Permit review and findings proving the change is minimal and not more harmful; approvals will not reset any amortization clock (§ 6.04.3070–6.04.3075).
If you received an abatement notice, you can appeal the amortization classification and ask the Planning Commission for an extension by documenting investment, convertibility, neighborhood character, and amortization schedule concerns (§ 6.04.3025–6.04.3055).

Checklist (what an applicant must generally provide)

Confirm whether the use/structure/parcel is a legal nonconformity (historic permit records, building permits). (See § 6.04.30 definitions.)
If you received a notice: read the abatement date and appeal deadline; file an appeal within the stated period if contesting classification/period (§ 6.04.3020–6.04.3025).
For repairs/rebuilds: obtain a cost estimate and replacement‑cost calculation to determine whether the 50% structural alteration threshold applies (§ 6.04.3065).
If proposing expansion or substitution: prepare a Minor Conditional Use Permit application with findings showing minimal impact and compatibility (§ 6.04.3070–6.04.3075).
If seeking extension of an amortization period: prepare evidence of investment, convertibility, and hardship for the Planning Commission (§ 6.04.3055).
For potential legalization of illegal pre‑1952 uses: document age, bring structure to building/health/safety standards, and apply for a Minor CUP if applicable (§ 6.04.3090).
Coordinate any work that affects setbacks, parking, sign or other development standards with the Community Development Department and obtain required permits (development permit, design review) — see Fillmore Development Standards, Fillmore Parking, and Fillmore Design Review.

Risks & Ambiguities

Issue	Why it matters	What to verify
Amortization classification	Determines how many years you have before abatement — incorrect classification can force early closure.	Verify which amortization category your nonconformity falls into per § 6.04.3015 and appeal within 30 days of notice.
50% repair threshold	If repairs exceed 50% of replacement cost, the structure may be required to conform (major cost).	Get a professional cost appraisal and confirm the commission’s interpretation; § 6.04.3065 sets the rule and allows single‑family exemption.
“Abandonment” timing	A lapse of 90 days can terminate nonconforming rights even if owner intended to resume.	Verify continuity via business records, equipment on site, utility usage; § 6.04.3010 is the controlling text.
Legalization of illegal nonconformities	Only a narrow class qualify (pre‑1952) and must meet safety codes.	Confirm construction/operation date and prepare building/health code compliance documentation per § 6.04.3090.
Lot adjustments / mergers	Lot line changes may not create new nonconformities but can eliminate existing ones.	Confirm lot history and proposed post‑merger compliance; see lot adjustment rules (Subdivision/lot line sections, § 6.08.071).
Interactions with overlays	Overlay rules (e.g., SFIP) can change permitted uses and create nonconformities.	Check the overlay rules at Fillmore Overlay Districts and the Official Zoning Map; verify with the director.

Plain-English Summary

If your Fillmore property lawfully pre‑dated a change in the zoning rules, you may keep using it for that older use, but you generally cannot enlarge it or let it sit unused long enough to lose the right; major repairs or changes (especially those costing more than half the building’s replacement value) usually force you to comply with the current zoning — you can appeal amortization schedules or seek limited permits for small expansions or substitutions. § 6.04.3001–6.04.3075 explain these rules in detail.

Source References

Fillmore Zoning Ordinance — Chapter on Nonconforming Structures and Uses: § 6.04.30 (Purpose and definitions)
Abandonment & restrictions on improvements: § 6.04.3010 (restriction on improvements; 90‑day abandonment rule)
Termination / amortization schedule: § 6.04.3015 (amortization periods and single‑family exemption)
Notice, appeal, hearings: § 6.04.3020—§ 6.04.3045 (notice, appeal, hearing, recordation)
Extension of time (amortization): § 6.04.3055 (grounds and factors for extension)
Conditional pathways—Minor CUPs, expansion & substitution of nonconforming uses: § 6.04.3070, § 6.04.3075
Repairs / 50% replacement-cost threshold: § 6.04.3065
Illegal nonconforming use legalization (pre‑1952 rule): § 6.04.3090
Zoning districts & development standards (RPD series): § 6.04.0220; Table II‑1 and § 6.04.0415 (zoning district development standards)
Commercial district standards (CN/CBD/CO/CH): § 6.04.0615 (zoning district development standards table)
Business Park (BP) standards and permitted uses: § 6.04.1205—6.04.1215 (BP uses, conditions, dimensional standards)

If you need parcel‑specific confirmation (e.g., whether a property is recorded as a legal nonconformity, the amortization notice on record, or a pre‑1952 construction date), Verify with the jurisdiction — contact the Fillmore Community Development Department and consult the Official Zoning Map. Not found in retrieved materials: any fee schedule for minor CUPs or the city’s online parcel search output — Verify with the department.

Sources

Retrieved passages

CBC § 6.04.68 (Section 6.04.68) High relevance
Fillmore Zoning Code (§ 3) High relevance
Fillmore Zoning Code High relevance
Fillmore Zoning Code (Section 6.04.68) High relevance
CBC § 6.04.78 (section apply) High relevance
Fillmore Zoning Code High relevance
Fillmore Zoning Code (Section 6.04.70) High relevance
Fillmore Zoning Code (section apply) High relevance
Fillmore Zoning Code Medium relevance
Fillmore Zoning Code (§ 7) Medium relevance
Fillmore Zoning Code (§ 6) Medium relevance
Fillmore Zoning Code (§ 66314) Medium relevance
Fillmore Zoning Code (§ 66333) Medium relevance
Fillmore Zoning Code (§ 6) Medium relevance
CBC § 66314 (§ 66314) Medium relevance

Cited sections

Official Fillmore code library

Frequently asked questions

What counts as a nonconforming use in Fillmore?

A nonconforming use is a use lawfully established under prior rules that no longer complies because the zoning changed. The code defines these terms and sets administration rules in § 6.04.30 (definitions and purpose).

How long can a nonconforming commercial use continue before the city requires removal?

The city uses an amortization schedule in § 6.04.3015. For example, a nonconforming use in a structure designed for a permitted use is listed as 10 years in the amortization table; specific categories and exceptions are enumerated in that section.

If I stop operating for a few months, do I lose my nonconforming rights?

Yes — if the nonconforming use is discontinued for 90 consecutive days (or a total of six nonconsecutive months), the right to continue that nonconforming use ends under § 6.04.3010.

Can I repair or expand a nonconforming building in Fillmore?

Ordinary repairs and maintenance are allowed, but structural alterations whose expense exceeds 50% of replacement cost will require the structure to be brought into compliance (treated as new) per § 6.04.3065. Minimal expansions of use may be allowed only via a Minor Conditional Use Permit and subject to findings (§ 6.04.3070).

Are single‑family homes exempt from amortization in Fillmore?

Yes. Single‑family residential structures are specifically exempt from amortization under the schedule in § 6.04.3015.

What happens if my nonconforming structure is more than 50% damaged?

If damage exceeds 50% of replacement cost, repair or reconstruction must conform to current zoning/district standards and the nonconformity is eliminated (treated as a new structure) per § 6.04.3065; partial damage less than 50% may be restored if work begins within 90 days.

Can the city legalize an illegal nonconforming use?

The code says illegal nonconforming uses must be removed, but the Director may legalize an illegal nonconforming structure/use constructed/started prior to 1952 via a Minor Conditional Use Permit if safety, purpose, and building/health code compliance are demonstrated (see § 6.04.3090).

If my parcel is nonconforming because of lot size, can I combine lots to fix it?

Lot line adjustments and mergers are allowed but the resulting parcel may not create new nonconforming uses or structures; the Subdivision chapter and lot adjustment rules require that resulting parcels meet minimum area, frontage, and yard requirements or the Community Development Director/Planning Commission approve the merger (see lot adjustment rules in § 6.08.071 and general merger provisions). Verify with the director.

Can I substitute a different nonconforming use in a multi‑tenant commercial center?

A nonconforming use occupying part of a nonconforming commercial center may be replaced by a similar nonconforming use only with a Minor CUP and if the Director finds the substitute is similar and not materially detrimental; the entire center must not have been vacant for 90 consecutive days (§ 6.04.3010; § 6.04.3075).

Do I need design review or other permits to change a nonconforming building?

Yes — development permits, design review, parking, and other development standards may apply when altering or rebuilding nonconforming structures; see Fillmore Design Review and Fillmore Development Standards. Major changes may require a Development Permit or Minor CUP per the applicable sections in Chapter 6.04.

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