Local zoning · Palmdale

Palmdale — Nonconforming Uses

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

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Last reviewed: July 2, 2026

Overview

This page explains how the City of Palmdale treats nonconforming uses, nonconforming structures, and nonconforming parcels under the local zoning code (Title 17). It summarizes what may continue, what triggers loss of nonconforming status, how repairs/expansions are handled, and what documentary proof the City will expect. The rules below are drawn from PMC Chapter 17.28 and the related zone chapters cited.

Key definition and controlling chapter: § 17.28.020 (definitions) and the entire Chapter 17.28 (Nonconforming Uses, Structures and Parcels) govern nonconforming rules in Palmdale .

When this page refers to development measurements or minimums, check the underlying zone's development standards in the Palmdale code (for example the single‑family development table at § 17.36.010); those standards intersect with nonconforming rules and may affect whether an improvement is permitted .

(First related-topic links: the first time each of the following words naturally appears below they are linked)

  • Off-street parking rules interact with nonconformities (see § 17.28.040) .
  • Nonconforming expansions must meet underlying development standards in the applicable zone (see § 17.28.030(C)(1)) .
  • Additions that require City review may be subject to design review or minor site plan review (see § 17.26.090 referenced in § 17.28.030) .
  • Overlays can affect whether a use is allowed going forward; consult overlay districts and the base zone rules (see Table of Zones § 17.14.010) .
  • Residential nonconformities interact with ADUs rules and the State's ADU statutes; local ADU rules note that ADU approval cannot be used to force elimination of safe, legal nonconformities (see PMC § 17.91.010 and § 17.28.050) .
  • Structural repairs required by the California Building Standards Code (Title 24) are allowed where they solely address building- or fire‑code compliance per § 17.28.030(C)(4) .

How Palmdale’s Nonconforming Rules Work (code basics)

  • The ordinance defines: nonconforming parcel, nonconforming structure, nonconforming use in § 17.28.020 (Chapter 17.28) .
  • Continuation: A lawful nonconforming use or structure may continue and ownership may change, but continuation must follow the limits set out in § 17.28.030 .
  • Enlargement / Intensification:
    • Nonconforming uses may not be enlarged or intensified beyond the area, hours, employees, traffic/noise levels that existed when they became nonconforming — see § 17.28.030(B) .
    • Nonconforming structures may be expanded only if the expansion complies with all applicable Title 17 standards (see § 17.28.030(C)(1)) .
  • Maintenance and repairs:
    • Single‑family dwellings and duplexes: may be maintained and repaired at owner’s discretion (residential exemption) — see § 17.28.030(C)(3)(a) and § 17.28.050(A) .
    • Multifamily or nonresidential structures: repairs allowed so long as no prohibited structural alterations occur and the cost of work in any 12‑month period does not exceed 25 percent of the structure’s value, as determined by the Building Official; more extensive work may require minor site plan review per § 17.28.030(C)(3)(b) .
  • Destruction and reconstruction:
    • Nonconforming status terminates if structure is destroyed or involuntarily damaged beyond thresholds in § 17.28.060(B). If repair cost is 50 percent or less of assessed value pre‑damage, restoration to the same size and use is allowed if started within one year and diligently pursued; if more than 50 percent, minor site plan review is required and the review authority must find public benefit outweighs detriment (see § 17.28.060(B)(1–2)) .
  • Off‑street parking deficiency:
    • If a building had fewer parking spaces than Title 17 requires when the Title was adopted, the building cannot be altered or enlarged in a way that increases use unless additional parking is supplied to meet requirements for the added use (see § 17.28.040) .
  • Loss of nonconforming status:
    • Continuous discontinuance for 12 months or more ends legal nonconforming rights; the Director will use evidence such as disconnecting utilities or removal of equipment (see § 17.28.060(A)) .
  • Nonconforming parcel:
    • A parcel that no longer meets area/width/depth may still be a legal building site if it meets one of the criteria in § 17.28.070(A)(1–4) (recorded subdivision, deed prior to amendment, approved variance/lot line adjustment, or limited government acquisition) .
  • Uses that lacked a CUP:
    • A use lawfully operating but that would now require a conditional use permit is deemed conforming only to the extent it previously existed; see § 17.28.080 .

District-by-district — how nonconforming rules interact with common Palmdale zones

(Each district subsection gives the zone purpose (where stated in Title 17), typical permitted uses, where the zone is applied or oriented in Palmdale, and where the development standards live. For precise dimensional numbers consult the cited development standards table in each chapter and the general development standards chapter.)

Residential zones (ER, LDR, SFR 1, SFR 2, SFR 3, RN 1–4)

  • Purpose: preserve established residential neighborhoods and implement low‑ to medium‑density General Plan categories (see § 17.30.010 and the list of zones at § 17.14.010 for the zone map references) .
  • Typical permitted uses: single‑family homes, duplexes where allowed, accessory uses and ADUs consistent with § 17.91.010 (local ADU rules) .
  • Key dimensional standards: the single‑family residential development table is located at § 17.36.010 (Table 17.36.010‑1) — setbacks, lot coverage, height limits, and open space minima appear there; exact numbers not reproduced here (see code) . If a residential dwelling is nonconforming, § 17.28.050(A–C) provides specific residential exemptions (e.g., rebuilding dwellings that are involuntarily damaged) .
  • Where it applies: citywide residential neighborhoods; substandard lots recorded prior to adoption are addressed in § 17.11.090 (substandard lots) .

Neighborhood Commercial — NC

  • Purpose: small‑scale commercial nodes serving nearby residents; groceries, small retail, services (see § 17.41.010) .
  • Typical permitted uses: supermarkets, restaurants, offices, banks, neighborhood retail; nonconforming commercial uses must follow Chapter 17.28 limits if they pre‑date a zoning change .
  • Key dimensional standards: commercial development standards are in Division 4 and in Chapter 17.48; nonconforming additions must meet the applicable development standards referenced in § 17.28.030(C)(1) .

Regional Commercial — RC

  • Purpose: large commercial/retail draws (big box, mall) serving a regional market; limited multifamily allowed via comprehensive plan (see § 17.42.010) .
  • Typical permitted uses: regional retail, auto‑oriented services, major entertainment and shopping uses; pre‑existing nonconforming uses are regulated under Chapter 17.28 .
  • Where it applies: corridors like SR‑14 / Rancho Vista, Pearblossom Hwy / Fort Tejon, Avenue R / 47th St E — see § 17.42.010 for examples and intent language .
  • Key standards: see Division 4 and supplemental standards (Chapter 17.49); parking rules heavily apply — consult § 17.87.060 for parking tables and § 17.28.040 for off‑street parking deficiency interaction .

Visitor Commercial — VC

  • Purpose: serve visitors with lodging, convenience retail, restaurants and services (see § 17.43.010) .
  • Typical permitted uses: hotels, convenience retail, restaurants, medical/professional offices; nonconforming commercial uses follow Chapter 17.28 restrictions when a zone change or amendment created the nonconformity .

Mixed‑Use zones (MU 1, MU 2, MU 3)

  • Purpose: allow a mix of residential and commercial uses at varying intensities (see Chapter 17.51–17.53 and Division 5) .
  • Typical permitted uses: stacked/adjacent residential with retail/office; nonconforming uses must comply with Chapter 17.28 when they pre‑date the mixed‑use designation .
  • Key dimensional standards: mixed‑use development standards are in Division 5 and in the mixed‑use chapters; expansions of a nonconforming structure must meet current mixed‑use standards (see § 17.28.030(C)(1)) .

Office Flex (OFX), Medical Flex (MEDFX), Educational Flex (EDFX)

  • Purpose: flexible campus‑type zones for office/medical/educational anchors (see § 17.46.010, § 17.44.010, § 17.45.010) .
  • Typical permitted uses: hospitals/campuses (MEDFX), higher education (EDFX), office R&D and professional uses (OFX). Nonconforming structures in these zones are subject to Chapter 17.28 rules and to the supplemental standards in Chapter 17.49 where applicable .

Light/Heavy/Aerospace Industrial (LI, HI, AI)

  • Purpose: industrial and employment uses; consult Division 6 for exact use lists and standards (see Table of Zones § 17.14.010) .
  • Typical permitted uses: manufacturing, warehousing, aerospace facilities; nonconforming industrial uses remain regulated by Chapter 17.28 and performance standards in Chapter 17.84 (noise, emissions) apply to existing uses .

Public Facilities & Special Purpose zones (PF‑C, PF‑S, PF‑P, OS, SP, U‑ROW)

  • Purpose: civic, parks, schools, and special planning areas; allowed uses and special standards in Chapter 17.75 and Division 7 (see § 17.14.010 table) .
  • Typical permitted uses: municipal buildings, schools, parks; pre‑existing nonconforming uses on these parcels follow Chapter 17.28 with attention to special signage and buffering rules (see PMC Chapters on Signage and Landscaping and Screening where those topics appear) .

Notes on district breakdowns: the Palmdale code provides zone‑specific intent and the full permissions tables in Divisions 3–7. Exact dimensional figures (setbacks, heights, lot coverage, FAR) live in the tables (for example Table 17.36.010‑1 for single‑family) and must be consulted for parcel‑specific determinations; where the ordinance text describing the standards existed in the retrieved materials it is cited above — otherwise the precise numeric standard is Not found in retrieved materials and must be verified in the specific zone chapter or Table referenced in the code (see § 17.36.010, § 17.48.010, Table 17.14.010‑1) .

Quick Reference Table — Most decision‑relevant nonconforming rules

Topic What the City allows or prohibits Code Reference
Legal definitions (what "nonconforming" means) Nonconforming parcel, structure, and use defined; signage handled separately § 17.28.020
Continued operation Nonconforming uses/structures may continue; subject to limits below § 17.28.030(A)
Enlargement of use Nonconforming uses may not be enlarged or intensified beyond prior extent § 17.28.030(B)(1)
Structural expansion Nonconforming structures may be expanded only if expansion meets Title 17 standards § 17.28.030(C)(1)
Repair/maintenance cap (multifamily/nonres) Work in any 12‑month period must not exceed 25 percent of structure value unless authorized § 17.28.030(C)(3)(b)
Parking deficiency Cannot enlarge use without supplying required additional parking § 17.28.040
Destruction threshold Restoration allowed if repair ≤ 50 percent of assessed value; >50% requires minor site plan review § 17.28.060(B)(1–2)
Discontinuance Nonconforming rights end after 12 months of continuous discontinuance § 17.28.060(A)(1)
Nonconforming parcel (legal building site) Parcel OK if created by recorded subdivision, by deed before amendment, by variance/lot‑line adjustment, or limited gov't acquisition § 17.28.070(A)(1–4)
Uses lacking CUP previously Use lawful without CUP is conforming only to extent it existed; previous approvals remain in effect § 17.28.080

Checklist — what an applicant should prepare

  • Evidence the use/structure was lawfully established before the ordinance/amendment that created the nonconformity (e.g., prior permits, dated business records, lease, or deeds). See § 17.28.020 and § 17.28.030 .
  • Documentation of continuous operation (utility bills, payroll, business records) if claiming continued nonconforming status (to defeat a discontinuance claim under § 17.28.060(A)) .
  • A cost estimate and Building Official valuation if doing repairs — needed to determine the 25% / 50% thresholds in § 17.28.030(C)(3) and § 17.28.060(B) .
  • A parking analysis showing existing supply and how you will provide any additional spaces required under § 17.28.040 and the parking tables (PMC § 17.87.060) .
  • Evidence that a nonconforming parcel meets one of the legal‑building‑site criteria if the lot is substandard (see § 17.28.070(A) and § 17.11.090) .
  • If repairs exceed thresholds or the project is more than routine maintenance, prepare for minor site plan review (PMC § 17.26.090) and any design review required by the zone; see § 17.28.030(C)(3)(b) .

Risks & Ambiguities

Issue Why it matters What to verify
Determining the “date” that created nonconformity The date an amendment took effect determines whether a use was lawfully existing beforehand Confirm the operative ordinance/amendment date and produce dated evidence of establishment (See § 17.28.020).
Repair cost valuation (% thresholds) Whether work is allowed without discretionary review depends on the 25% (repairs) and 50% (destruction) thresholds Get a Building Official valuation and an independent contractor estimate; reference § 17.28.030(C)(3) and § 17.28.060(B).
What counts as “discontinuance” City may rely on removal of fixtures, disconnected utilities, or lack of records to find discontinuance Keep utility records, business filings, and site photos; see § 17.28.060(A)(2–3).
Partial demolition or phased work Risk of triggering minor site plan review or loss of nonconforming status Clarify scope and timing with the Director; minor site plan rules referenced in § 17.26.090 and § 17.28.060(B)(2) apply.
Off‑street parking shortfall Adding floor area or uses without providing additional spaces can be denied Compare existing parking to Table 17.87.060‑1 and consult § 17.28.040; supply plans to add spaces if required
Parcel legal status (substandard lot) Whether a lot is a legal building site affects entitlement eligibility Prove recorded subdivision, pre‑amendment deed, variance/LLA, or limited gov’t acquisition per § 17.28.070(A)(1–4).

Plain‑English Summary

If your use, building, or lot in Palmdale was legal when it was created but no longer meets current zoning rules, you can usually keep using it — but you cannot expand the use, intensify operations, or undertake major rebuilding without meeting the code’s limits. Repairs are allowed within dollar thresholds; long gaps in operation (generally 12 months) or destruction past 50 percent of value will terminate nonconforming status. See PMC Chapter 17.28 for the controlling rules .

Source References

  • PMC Chapter 17.28, "Nonconforming Uses, Structures and Parcels" — § 17.28.010–080 (purpose, definitions, restrictions, parking deficiency, residential exemptions, loss of status, nonconforming parcel, lack‑of‑CUP) — (Downloaded from https://ecode360.com/PA4578)
  • § 17.28.030 — Restrictions on nonconforming structures and uses (continuation, enlargement limits, repairs/25% rule) .
  • § 17.28.040 — Off‑street parking deficiency (cannot enlarge use without supplying required parking) .
  • § 17.28.050 — Residential exemptions (rebuilding dwellings; fences) .
  • § 17.28.060 — Loss of nonconforming status; discontinuance 12 months, destruction thresholds 50 percent and minor site plan review requirement .
  • § 17.28.070 — Nonconforming parcel legal building site criteria and subdivision/lot‑line treatment .
  • Table of Zones and zone list: § 17.14.010 (List of Zones) — shows zone symbols including ER, LDR, SFR 1–3, RN 1–4, NC, RC, VC, MUs, PF‑C, etc. .
  • Single‑family development standards: § 17.36.010 (Table 17.36.010‑1) — referenced for residential dimensional standards .
  • Parking requirements and tables: § 17.87.060 (Table 17.87.060‑1) — for vehicle parking rates used when assessing a nonconforming parking deficiency .
  • Minor site plan review: § 17.26.090 — used as the discretionary route for larger repairs or expansions to nonconforming structures (referenced in § 17.28.030(C)(3)(b)) .

Sources

Retrieved passages

  • CBC § 4 (Title for) High relevance
  • Palmdale Zoning Code (§ 17.28.060.) High relevance
  • Palmdale Zoning Code (§ 4) High relevance
  • CFC § 17.26.090 (§ 17.26.090) High relevance
  • Palmdale Zoning Code (Title or) High relevance
  • CFC § 17.28.040 (§ 17.28.040.) High relevance
  • CFC § 17.28.030 (§ 17.28.030) High relevance
  • Palmdale Zoning Code (Title shall) High relevance
  • Palmdale Zoning Code (§ 17.24.040) Medium relevance
  • Palmdale Zoning Code (§ 17.92.020) Medium relevance
  • Palmdale Zoning Code (§ 17.10.040) Medium relevance
  • CBC § 17.91.010 (Section accessory) Medium relevance
  • Palmdale Zoning Code (§ 17.87.060) Medium relevance
  • Palmdale Zoning Code (§ 4) Medium relevance
  • Palmdale Zoning Code (§ 4) Medium relevance
  • Palmdale Zoning Code (Chapter 17.48) Medium relevance

Cited sections

Frequently asked questions

What is a nonconforming use in Palmdale?

A nonconforming use in Palmdale is a use of land or a structure that was lawfully established before a change in Title 17 made the use no longer allowed as of that change. The code defines the term in § 17.28.020 and regulates continuation and limits in § 17.28.030 .

Can I expand a nonconforming building or business in Palmdale?

You may not enlarge a nonconforming use beyond the area or intensity it occupied prior to becoming nonconforming; a nonconforming structure can be expanded only if the addition complies with current Title 17 standards (see § 17.28.030(B) and § 17.28.030(C)(1)) .

If my building is damaged, can I rebuild it?

Yes, subject to thresholds: if repair/replacement cost is 50 percent or less of assessed value immediately prior to damage, you may restore the structure to the same size and use if work begins within one year; if repair exceeds 50 percent, minor site plan review is required and additional findings must be made (see § 17.28.060(B)) .

How long can a nonconforming use sit idle before rights are lost?

If a nonconforming use is discontinued for 12 months or more, the legal right to continue that nonconforming use terminates. The Director will look for evidence such as removed equipment or disconnected utilities when making a determination (§ 17.28.060(A)) .

What happens if my lot is substandard after a zoning change?

A parcel that does not meet current area/width/depth standards may still be a legal building site if it meets one of the criteria in § 17.28.070(A) (e.g., recorded subdivision, deed dated prior to amendment, approved variance/lot line adjustment, or limited government acquisition) — document accordingly .

My business never had a conditional use permit but the current code now requires one — is it automatically illegal?

A use that was lawfully operating without a CUP before the code changed is deemed conforming only to the extent it previously existed (same site boundaries, hours, etc.). See § 17.28.080 for the rule treating conformity due to lack of CUP .

Does parking shortfall on an old property mean I cannot remodel?

If the building had fewer parking spaces than required when Title 17 was adopted, you cannot alter or enlarge the building to increase floor area, seating, or guestrooms unless you supply the additional vehicle parking spaces required for the new or enlarged use (see § 17.28.040) .

If I want to modernize a nonconforming multifamily building, how much work can I do without discretionary review?

Routine maintenance and repairs are allowed; more extensive structural changes to multifamily/nonresidential structures that exceed routine repair limits may be authorized by minor site plan review only after finding the work will not prolong the nonconforming condition (see § 17.28.030(C)(3)(b)) .

Can I add an ADU to a property that is nonconforming?

Local ADU rules state an ADU can be allowed on a lot with a legal or legally nonconforming dwelling; the City cannot use ADU approval as a pretext to require correction of certain nonconforming zoning conditions unless they present threats to health or safety (see § 17.91.010 and § 17.28.050) .

Who decides whether an unlisted use is similar enough to be allowed in a zone?

The Director makes determinations on unlisted uses (or may refer to the Planning Commission) and must find the use is similar in type and intensity to allowed uses and meets the zone’s purpose (see § 17.24.040 for use determinations) .

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