Los Gatos — Nonconforming Uses

Last reviewed: July 2, 2026

Overview

This page explains how the Town of Los Gatos regulates nonconforming uses, nonconforming buildings, and nonconforming lots under the local zoning ordinance (commonly found in the Chapter 29 zoning code). It summarizes what makes a use/lot/building nonconforming, how long a nonconforming status lasts, when changes or expansions are allowed, and what the Town may require to continue or phase out a nonconformity. All rules below are grounded in the Town ordinance; see the cited controlling sections (§) and the Planning Department record requirement.

How Los Gatos defines nonconformity (short)

• A building, use, or lot becomes nonconforming only because of annexation, amendment to the ordinance, or rezoning; and a use started lawfully but now lacking a required conditional use permit is also nonconforming. See § 29.10.180.

• If a property does not meet the chapter’s requirements and is not a legal nonconforming item as defined, it is unlawful (a nuisance). See § 29.10.185.

District-by-district notes (what the nonconforming rules actually reference)

The Los Gatos nonconforming rules are written to apply across zones; the code text specifically references certain zone names (used below). The ordinance itself contains the full lists of district purposes, permitted uses, and dimensional standards elsewhere in Chapter 29; those zone-specific tables are not reproduced here. Where the nonconforming rules single out a district or group of districts they are called out and explained below with the controlling §. For district-specific permitted uses or dimensional numbers (setbacks, heights, lot sizes) consult the Town’s zone tables. Verify with the jurisdiction for parcel-specific interpretation.

Residential zones (general)

• Purpose/where it applies: Any residential zone as defined in the code (examples used by the nonconforming division include R-1, R-1D, R-D, HR, RC) — the nonconforming rules apply to all zones but treat residential zones specially in several places. See § 29.10.175 and § 29.10.180.
• Key nonconforming rules that matter in residential zones:
  • Nonconforming single- or two-family dwellings may be rebuilt if destroyed and may be expanded with Building Official/Planning Director approval (see § 29.10.260 and § 29.10.245(b)).
  • Commercial or industrial buildings located in residential zones generally may not be expanded (see § 29.10.245(a)(1)).

Multiple‑family dwellings in specific residential districts — RC, HR, R-1, R-D, R-1D

• Purpose/where: These district abbreviations are used by the ordinance when applying special nonconforming-expansion rules.
• Key nonconforming rule: Expansion of nonconforming multiple‑family dwellings in the zones RC, HR, R-1, R-D, and R-1D is prohibited except where the ordinance specifically allows; expansions of one- or two-family dwellings are treated differently. See § 29.10.245(a)(2) and § 29.10.245(b–c).
• Typical permitted uses / dimensional standards: Not found in retrieved materials — verify with the Town zoning district tables. Verify with the jurisdiction.

Office / Commercial zones (and “industrial buildings in an office or commercial zone”)

• Important nonconforming rule: Industrial buildings located in an office or commercial zone may not be expanded when nonconforming; the expansion prohibitions list industrial-in-office/commercial explicitly. See § 29.10.245(a)(3).
• Downtown / special frontage area: The code gives a narrow rule for commercial uses that are nonconforming as to parking in a specified downtown area (between Los Gatos‑Saratoga Road and Ashler Avenue with frontage on North Santa Cruz Avenue or northside of Los Gatos‑Saratoga Road west of State Highway 17). Those downtown businesses may remodel subject to no increase in floor area, no loss of parking, and payment of an in‑lieu parking fee. See § 29.10.207(c) for the exact geographic carve‑out and requirements.

Nonconforming lots (all zones)

• If the lot is in a residential zone and recognized by the Town as a lawful, separate, nonmerged lot, a single‑family dwelling may be erected on it if architecture and site approval is obtained. If in a non‑residential zone, the lot may be used for any use allowed in the zone. See § 29.10.265.

Core rules and standards (quick table)

Practical guidance & how nonconforming rules connect to other topics

• If your property is nonconforming and you plan work, check whether your proposal is a modification (triggers CUP under § 29.10.215) or simply ordinary maintenance (allowed; see § 29.10.255).
• Before proposing any change, check setbacks and development standards in the code's district tables and the Town’s Los Gatos Development Standards. Expansion that would move a building closer to a property line is prohibited by the nonconforming rules (see § 29.10.250).
• If your commercial use is nonconforming only because of parking, read § 29.10.207 carefully — you may be able to remodel without increasing floor area by paying an in‑lieu fee in a small downtown area; otherwise you cannot intensify the use. Also review the Town's Los Gatos Parking page.
• Architecture and site approvals or Los Gatos Design Review are often required when expanding or erecting on a nonconforming lot in residential zones; plan accordingly. See § 29.10.265 and § 29.10.245.
• For accessory dwelling units (ADUs): nonconforming setbacks can affect ADU placement; the code references that when an existing structure is nonconforming as to setback and converted to an ADU, expansions may not be nearer to the property line than the existing building in accordance with § 29.10.245. Consult the Town’s Los Gatos ADUs guidance and the state ADU rules.

Links to related Town pages you will likely need:

• Los Gatos Development Standards (first place to check setbacks/coverage/FAR)
• Los Gatos Parking
• Los Gatos Design Review
• Los Gatos Overlay Districts
• Los Gatos ADUs
• Los Gatos Variances and Exceptions
• California Building Standards Code (Title 24) — for building permits (the nonconforming ordinance refers to building value and rebuilding rules but does not supplant Title 24)

(Each of the above is hyperlinked where the topic is first mentioned.)

Checklist (what an applicant must satisfy before proposing work or claiming a continued nonconforming status)

• Confirm how the property became nonconforming (annexation, rezoning, or ordinance amendment) and document the date and reason; check the Town’s record list. § 29.10.180, § 29.10.205.
• Determine whether the proposed change is a modification (intensification, added floor area, increased hours, additional land) — if so, prepare a CUP application. § 29.10.215.
• For buildings: confirm whether the proposed work is ordinary maintenance (allowed) or structural work exceeding 50% of replacement value in 12 months (would trigger compliance). § 29.10.255.
• If expansion is proposed, confirm whether expansion is prohibited in your situation (ex: commercial in residential; multiple‑family in RC/HR/R-1/R‑D/R‑1D). If allowed, be ready for architecture & site approval and the expansion rules in § 29.10.250.
• For nonconforming lots in residential zones: obtain architecture and site approval before building a single‑family dwelling. § 29.10.265.
• If nonconforming as to parking, calculate current parking supply vs. required and prepare to provide parking to the maximum extent possible or pay the in‑lieu fee where the code allows. § 29.10.207.

Risks & Ambiguities

Plain-English Summary

If your Los Gatos property became illegal to build or use under a newer zoning map or ordinance, it may be "nonconforming" and can often keep operating for a time — but there are strict rules: stop for 30 or 180 days and you lose rights; you generally cannot intensify or expand a nonconforming commercial or industrial building in a residential zone; many changes require a conditional use permit; and the Town keeps a public record of nonconforming items. See the ordinance sections cited here for exact triggers and deadlines.

Source References

• Town of Los Gatos Zoning Ordinance, Division 5, Nonconforming Buildings, Lots and Uses: § 29.10.175 — § 29.10.295 (see especially § 29.10.180, § 29.10.190, § 29.10.195, § 29.10.200, § 29.10.205, § 29.10.207, § 29.10.210, § 29.10.215, § 29.10.245–263)
• Rebuilding and duration schedule for nonconforming buildings: § 29.10.200, § 29.10.260.

If you need the zone‑by‑zone permitted uses, setbacks, lot sizes and numeric development standards (for example R‑1 front yard, lot coverage, height limits), those are contained elsewhere in Chapter 29 and in the Town’s development standards. Not found in retrieved materials here: the district numeric tables. Verify with the Town or request the specific district extract.

Retrieved passages

• Los Gatos Zoning Code (section 29.10.215) High relevance show source text
• Los Gatos Zoning Code (chapter only) High relevance show source text
• Los Gatos Zoning Code (§ 3.50.030) High relevance show source text
• Los Gatos Zoning Code (§ 3.50.085) High relevance show source text
• Los Gatos Zoning Code (section 29.10.235) High relevance show source text
• Los Gatos Zoning Code (§ 3.50.050) High relevance show source text
• Los Gatos Zoning Code (section 29.10.245) High relevance show source text
• Los Gatos Zoning Code (§ 3.50.050) High relevance show source text
• Los Gatos Zoning Code (section 29.10.190) High relevance show source text

Cited sections

• Town of Los Gatos Zoning Ordinance, Division 5, Nonconforming Buildings, Lots and Uses: **§ 29.10.175 — § 29.10.295** (see especially **§ 29.10.180**, **§ 29.10.190**, **§ 29.10.195**, **§ 29.10.200**, **§ 29.10.205**, **§ 29.10.207**, **§ 29.10.210**, **§ 29.10.215**, **§ 29.10.245–263**) (§ 29.10.175)
• Rebuilding and duration schedule for nonconforming buildings: **§ 29.10.200**, **§ 29.10.260**. (§ 29.10.200)
• LosGatos_ZoningCode.md

• Official Los Gatos code library