Local zoning · Tracy

Tracy — Overlay Districts

Q: What does the I‑205 overlay change about an M‑1 site in Tracy?

The I‑205 overlay zone adds a set of prohibitions and dimensional caps to underlying industrial districts: it prohibits many large distribution/warehouse and heavy truck‑terminal uses, limits building height to 40 ft , caps FAR at 0.40 , limits building size to 75,000 sq ft , and requires a 100 ft setback from the I‑205 right‑of‑way. It also requires a development review permit with elevated (City Council) review; see § 10.08.2863–2865 .

Q: Which industrial uses are explicitly prohibited in the I‑205 overlay?

The code lists specific prohibited categories in § 10.08.2863 — examples include warehousing and storage (Use Group 53), truck terminals and parcel delivery/vehicle storage, certain large manufacturing in buildings over 75,000 sq ft, and truck stop uses. Check § 10.08.2863 for the full prohibited list.

Q: What are the minimum site and setback standards for mining in the AMO?

For surface mining the code requires a minimum 5‑acre gross site area , a minimum 200 ft lot width , and 50 ft front/side/rear yards for permitted uses (with exceptions for excavation/reclamation under an approved plan). See § 10.08.4870(a)–(c) .

Q: Can I build taller than 40 ft if the underlying zone allows it?

For the I‑205 overlay the maximum building height is 40 ft per § 10.08.2864(b) ; do not assume underlying height permissions override that cap. For AMO mining operations the code says “no structure height limit” except where AO applies ( § 10.08.4870(d) ) — AO or other overlay provisions may impose limits. If conflicting language appears, verify with the City.

Overlay Districts under the Tracy local zoning and planning code, with the controlling citations.

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Last reviewed: July 2, 2026

Overview

Overlay districts in Tracy are special zoning layers that sit on top of underlying base zones to add location-specific rules (use limits, design, setbacks, review procedures). This page summarizes the Tracy Municipal Code rules for the main overlay/special districts found in Title 10 (Zoning), explains what they do, and pulls the most decision-relevant standards together so applicants can plan next steps. See the city's general Tracy zoning & planning overview for context and check the official zoning map to confirm overlay boundaries.

Which overlays the code defines (quick list)

I-205 overlay zone (I-205 overlay zone) — purpose, prohibited uses, dimensional caps, and an elevated review requirement. See § 10.08.2861–2865 .
Airport Overlay Zone (AO) — safety/height/land‑use restrictions near the Tracy Municipal Airport. See § 10.08.3600 .
Aggregate Minerals Overlay Zone (AMO) — rules for mineral resources, mining uses and reclamation, with specific lot/yard/parking standards. See § 10.08.4860 and § 10.08.4870 .

Where the municipal code uses “overlay” language it applies additional or different rules to the uses and development standards of the underlying zone; the underlying zone categories (for example M-1, M-2, PUD) remain listed in the code of zones § 10.08.980 . Development within overlays is often subject to the city's design review and development standards, and will reference parking requirements where applicable.

District-by-district breakdown

I-205 overlay zone (I-205 overlay zone)

Purpose: The I-205 overlay zone is intended to improve aesthetics and economic potential along I‑205 and to set processing and submittal requirements for development adjacent to that corridor (§ 10.08.2861) .
Where it applies: The overlay covers land within 500 feet of either side of the I‑205 freeway as measured from the Caltrans right-of-way; it applies to certain industrial or industrial-designated lands including M‑1, industrial PUD designations, I‑205 Specific Plan, NEI Specific Plan and Industrial Specific Plan areas (§ 10.08.2862) .
Typical permitted / prohibited uses: Uses allowed by the underlying zone generally remain allowed, but a set of heavy distribution/warehouse and very large manufacturing and truck-related uses are expressly prohibited in the overlay — see the list in § 10.08.2863 (for example: warehousing/storage, truck terminals, large contract construction, indoor/outdoor equipment storage, certain manufacturing groups) .
Key dimensional and program limits:
- Maximum building height: 40 ft (§ 10.08.2864(b)) .
- Maximum floor area ratio (FAR): 0.40 (40%) (§ 10.08.2864(c)) .
- Maximum building size: 75,000 sq ft (§ 10.08.2864(d)) .
- Setback from I‑205 right-of-way: 100 ft; otherwise underlying yard standards apply (§ 10.08.2864(a)) .
Review and process: A development review permit is required before building permits; projects in the I‑205 overlay are subject to City Council review after Planning Commission recommendation (higher-tier review) — see § 10.08.2865 and the development review tiers § 10.08.3930–10.08.3950 .

Practical tip: If you are planning industrial or large-format commercial development near I‑205, design to the 40 ft / 75,000 sf / 0.40 FAR caps, assume elevated review, and screen for any uses listed in the prohibited list in § 10.08.2863 .

Airport Overlay Zone (AO)

Purpose: The Airport Overlay Zone (AO) is intended to prevent new structures or activities that could obstruct safe airport operations or invite public assembly in critical approach areas (§ 10.08.3600) .
Where it applies: The code lists AO among the zone names and applies airport-area regulations in Article 27; the precise overlay boundaries are determined by the zoning map and airport safety maps (see verification steps below) (§ 10.08.980, § 10.08.3600) .
Typical permitted uses: The code frames the AO as a constraint rather than a use list; it focuses on preventing obstructions and uses that would draw crowds into approach zones. The code text establishes the AO’s purposes but detailed conditional use, height charts, or noise/avian mitigation tables specific to AO are not reproduced in the retrieved excerpts — verify parcel-specific limitations with the City (§ 10.08.3600) .
Key dimensional standards: Not fully enumerated in the retrieved excerpts (see Information Gaps). Where other sections reference height exceptions in mining operations, AO rules may control height limitations for specific cases (§ 10.08.4870(d)) .

Practical tip: For development near Tracy Municipal Airport, expect stricter height and land‑use scrutiny; coordinate early with airport planning staff and the Development Services Department.

Aggregate Minerals Overlay Zone (AMO / Aggregate Minerals Overlay Zone)

Purpose and applicability: The Aggregate Minerals Overlay Zone (AMO) identifies lands with mineral resources and permits mining and related uses subject to reclamation and special permits; lands designated by the State Mining and Geology Board are placed into the AMO per § 10.08.4790–10.08.4860 .
Typical permitted uses: Mining and quarrying operations, certain accessory uses (storage of equipment, scales, offices), crop/tree farming and exploration (with constraints) — see § 10.08.4860 for permitted groups and § 10.08.4870 for conditional uses and development standards .
Key dimensional & operational standards for surface mining (decision‑relevant):
- Minimum lot area for surface mining operations: 5 acres (§ 10.08.4870(a)) .
- Minimum lot width: 200 ft (§ 10.08.4870(b)) .
- Yards: front, side, rear not less than 50 ft for permitted uses except excavation/reclamation with an approved plan; structures taller than 50 ft must have yards equal to the height (§ 10.08.4870(c)) .
- Structure height: none (no cap) except where the Airport Overlay Zone applies; then AO height rules control (§ 10.08.4870(d)) .
- Off-street parking and special screening for company vehicles — see § 10.08.4870(e) and linked parking rules in Article 26 .
Reclamation and permitting: Exploration, surface mining, and reclamation plans are regulated by the code (administrative permits, reclamation planning, and appeals to Planning Commission) — see § 10.08.4820, § 10.08.4790, and § 10.08.4810 .

Practical tip: Mining projects must include reclamation planning, meet minimum site sizes, and cannot ignore AO restrictions; expect a multi-step permit path and bond/financial assurance requirements for reclamation.

Quick decision‑relevant standards (table)

Overlay / Topic	Most relevant numeric limits or prohibitions	Code Reference
I‑205 overlay zone — max height	40 ft maximum building height	§ 10.08.2864(b)
I‑205 overlay zone — FAR	0.40 (40%) FAR	§ 10.08.2864(c)
I‑205 overlay zone — building size limit	75,000 sq ft	§ 10.08.2864(d)
I‑205 overlay zone — setback from freeway	100 ft from I‑205 right‑of‑way	§ 10.08.2864(a)
I‑205 overlay zone — prohibited heavy uses	Warehousing, truck terminals, certain large manufacturing, etc.	§ 10.08.2863
AMO (mining overlay) — lot area	Minimum 5 acres for surface mining operations	§ 10.08.4870(a)
AMO — yard minimums	50 ft front/side/rear for permitted uses (exceptions for excavation/reclamation with approved plan)	§ 10.08.4870(c)
AO — purpose	Prevent obstructions to airport operations; avoid public assembly in critical approaches	§ 10.08.3600

Checklist — what an applicant must satisfy (minimum)

Confirm whether the parcel is within an overlay by checking the official zoning map and zone legend (zone names and overlays are listed under § 10.08.980; verify on the City map) Verify with the jurisdiction .
Confirm underlying base zone uses and how the overlay modifies those uses (e.g., prohibited uses in § 10.08.2863) .
For projects in I‑205 overlay, design to ≤ 40 ft height, ≤ 75,000 sq ft, ≤ 0.40 FAR, and provide a 100 ft buffer from I‑205 where applicable (§ 10.08.2864) .
For projects in AMO, confirm minimum parcel size (≥ 5 acres), lot width requirements, yard setbacks and reclamation requirements (§ 10.08.4870, § 10.08.4860) .
Prepare design-level materials to satisfy the development review permit requirements under Article 30 (site plans, elevations, landscaping, parking information) and pay applicable fees (§ 10.08.3920, § 10.08.3940, § 10.08.3950) .
Expect tiered review: projects in I‑205 are typically Tier 1 (City Council) after Planning Commission recommendation; projects within 500 ft of a freeway may be Tier 2 (Planning Commission) — confirm the review tier per § 10.08.3950 .
Coordinate parking, loading and screening details with Article 26 parking requirements and the Citywide Design Standards; if in AMO include company-vehicle parking and screening per § 10.08.4870(e) .
For AO or projects with potential height/obstruction issues, consult airport staff and confirm applicable AO limitations (§ 10.08.3600) .

Risks & Ambiguities

Issue	Why it matters	What to verify
Overlay boundary uncertainty	If you misread whether the overlay applies you may design to the wrong limits (height, uses, review path).	Verify overlay on the official zoning map and confirm with Development Services; see § 10.08.980 for zone names and mapping references.
Underlying zone vs. overlay conflict	Overlays add or restrict uses and standards; a conflict changes what is permitted.	Read the overlay article text (e.g., § 10.08.2861–2865 for I‑205) and ask the City whether overlay or underlying rules control in a particular conflict—some overlays explicitly alter underlying standards.
Elevated review (Tier 1 for I‑205)	Projects in I‑205 trigger City Council review, which is longer/more political than staff review.	Confirm the review tier under § 10.08.3950 and budget for public hearings and possible design iterations.
Mining / reclamation obligations	AMO projects require reclamation plans, financial assurances and may trigger CEQA and long-term obligations.	Confirm reclamation and permit triggers in § 10.08.4820, § 10.08.4790 and § 10.08.4870; verify bonds/financial assurance with the City.
Airport overlay specifics for height/use	The AO's practical height and land-use limits are critical for tall structures.	AO purpose is in § 10.08.3600 but parcel-level height limits were not found in the retrieved excerpts — Verify AO charts/approach zones with City/Airport staff.
Joint compliance with other rules (signs, screening, parking)	Overlays don't replace sign/landscaping/parking chapters; you must meet those too.	Cross-check Article 26 (parking), Article 35 (signs), and Citywide Design Standards during prep. For parking rules see Article 26 and § 10.08.4870(e) for AMO company parking.

Plain‑English Summary

Some parts of the Tracy zoning code add a second rule layer on top of the base zone: the I‑205 overlay limits height, size and certain uses near I‑205 and forces higher-level review; the Airport Overlay (AO) protects airport approaches; and the Aggregate Minerals Overlay (AMO) governs mining sites (minimum site sizes, setbacks, reclamation). Design and permit to the overlay rules in addition to the underlying zone, and verify overlay boundaries with the City before detailed design. See the development review process and submit materials that address design, parking and screening early to avoid rework (§ 10.08.2861–2865, § 10.08.3600, § 10.08.4860–4870, § 10.08.3920–3950) .

Source References

I‑205 overlay zone (purpose, applicability, uses, standards, review): § 10.08.2861–2865 .
Development review process and tiers (applicability, application, approval authority): § 10.08.3920, § 10.08.3930, § 10.08.3940, § 10.08.3950 .
Zone names (includes AO in the list of zones): § 10.08.980 .
Airport Overlay Zone purpose: § 10.08.3600 .
Aggregate Minerals Overlay Zone permitted uses and standards: § 10.08.4860; § 10.08.4870; § 10.08.4790; § 10.08.4820; § 10.08.4810 .
General M‑1 references and where overlays indicate application (I‑205 overlap): § 10.08.2635; § 10.08.2640–2670 .
Development review decision factors and findings: § 10.08.3960 .

Information Gaps (what was not found in the retrieved materials)

Parcel‑level AO height tables or approach‑zone numeric limits beyond the AO purpose text are Not found in retrieved materials; verify with the City and Airport. .
A single cross-reference statement stating whether overlays automatically “supersede” all underlying rules in every conflict (other than PUD language for superseding in that PUD article) is Not found in retrieved materials; when conflicts arise, verify with Development Services and the specific overlay article text. .
City zoning map images or an online parcel query were not included in the retrieved files; confirm overlay boundaries with the City’s official zoning map (verify by contacting Tracy Development Services). Verify with the jurisdiction.

Sources

Retrieved passages

Tracy Zoning Code (§ 1) High relevance
Tracy Zoning Code (§ 1) High relevance
Tracy Zoning Code (article apply) High relevance
Tracy Zoning Code (Article 4.) Medium relevance
Tracy Zoning Code (Article 21.2) Medium relevance
Tracy Zoning Code (§ 4) Medium relevance
Tracy Zoning Code (§ 4) Medium relevance
Tracy Zoning Code (§ 3) Medium relevance
Tracy Zoning Code (§ 1) Medium relevance
Tracy Zoning Code (§ 10-2.2105) Medium relevance
Tracy Zoning Code (chapter 9.04) Medium relevance
Tracy Zoning Code (§ 1) Medium relevance
Tracy Zoning Code (§ 2) Medium relevance

Cited sections

Official Tracy code library

Frequently asked questions

What does the I‑205 overlay change about an M‑1 site in Tracy?

The I‑205 overlay zone adds a set of prohibitions and dimensional caps to underlying industrial districts: it prohibits many large distribution/warehouse and heavy truck‑terminal uses, limits building height to 40 ft, caps FAR at 0.40, limits building size to 75,000 sq ft, and requires a 100 ft setback from the I‑205 right‑of‑way. It also requires a development review permit with elevated (City Council) review; see § 10.08.2863–2865 .

Do I need a development review permit for a new warehouse in the I‑205 overlay?

Yes. The I‑205 overlay requires a development review permit before building permits, and projects in the overlay are typically subject to City Council review following Planning Commission recommendation (higher-tier review). See § 10.08.2865 and the development review tiers § 10.08.3930–3950 .

Which industrial uses are explicitly prohibited in the I‑205 overlay?

The code lists specific prohibited categories in § 10.08.2863 — examples include warehousing and storage (Use Group 53), truck terminals and parcel delivery/vehicle storage, certain large manufacturing in buildings over 75,000 sq ft, and truck stop uses. Check § 10.08.2863 for the full prohibited list.

What are the minimum site and setback standards for mining in the AMO?

For surface mining the code requires a minimum 5‑acre gross site area, a minimum 200 ft lot width, and 50 ft front/side/rear yards for permitted uses (with exceptions for excavation/reclamation under an approved plan). See § 10.08.4870(a)–(c) .

What does the Airport Overlay (AO) restrict?

The AO is intended to prevent structures or activities that would obstruct safe airport operation or create crowding in approach zones; the AO purpose and constraints are stated in § 10.08.3600. Parcel‑specific numeric height/approach limits were not reproduced in the retrieved excerpts; confirm AO charts and approach‑zone specifics with the City/Airport.

If my parcel falls in an overlay and a specific plan, which rules apply?

Overlays add to or modify the underlying zone and may be applied together with specific plans. The code lists where overlays apply (for example I‑205 applies to certain specific plan areas) — read the relevant overlay article text (e.g., § 10.08.2862) and the applicable specific plan. If conflicts appear, confirm with Development Services; the PUD article explicitly states PUD rules can supersede others for that zone, but a general “overlay supersedes underlying” statement was Not found in retrieved materials — verify with the jurisdiction.

Where do I find the official map showing overlay boundaries?

The ordinance establishes zone names and mapping authority (see § 10.08.980), but the actual map files and parcel overlay boundaries are held by the City. To confirm whether an overlay applies to a parcel, contact Tracy Development Services and request the current zoning/overlay map.

How do parking standards interact with overlays (for example AMO)?

Overlays typically do not replace Article 26 parking rules; the AMO specifically requires on‑site parking for company vehicles and screening in addition to Article 26 off‑street parking rules (§ 10.08.4870(e)). You must meet Article 26 plus any overlay‑specific parking/screening requirements.

Can I build taller than 40 ft if the underlying zone allows it?

For the I‑205 overlay the maximum building height is 40 ft per § 10.08.2864(b); do not assume underlying height permissions override that cap. For AMO mining operations the code says “no structure height limit” except where AO applies (§ 10.08.4870(d)) — AO or other overlay provisions may impose limits. If conflicting language appears, verify with the City.

If my site is in the AMO but not actively mined, what rules apply?

The AMO remains on the land because of mineral resource designation; alternative uses and requirements are discussed in § 10.08.4790–4860, including permitting for exploration and reclamation. Idle or reclaimed sites still may require compliance and approvals for change-of-use and reclamation plans — consult § 10.08.4790 and § 10.08.4810 for appeals and enforcement processes. ---

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