Local zoning · Morgan Hill

Morgan Hill — Zoning

Q: What are Morgan Hill's official zoning districts and where are they listed?

Morgan Hill's base zoning districts (e.g., RE , RDL , RDM , RDH , RAL , RAM , RAH , MU‑D , CN , CG , CI , IG , OS , PF , SRL ) and overlay/combining districts are listed in Table 18.14‑1 and Table 18.14‑2 ; see § 18.14.020 for the district list and § 18.14.030 for the adopted zoning map.

Q: What can I build on an R‑DL (Residential Detached Low) lot in Morgan Hill?

Permitted uses and unit types in RDL are primarily detached single‑family homes and limited accessory uses; numeric standards (minimum lot area, setbacks, coverage, height) are in Chapter 18.16 and the district development tables (e.g., Table 18.16‑4). Check the exact subzone (RDL‑20,000 vs RDL‑12,000) on the zoning map for the applicable minimum lot area. § 18.16.010 , Table 18.16‑4.

Q: Do form‑based districts change permitted uses or standards?

Yes. The Form‑Based Code (Chapter 18.29 ) applies within its mapped FBC area and regulates building form, frontage types, and allowed building types; where the FBC conflicts with other zoning chapters, the FBC controls. Where the FBC is silent, the rest of the zoning code applies. § 18.29.020 .

Q: Does Morgan Hill still use any pre‑2018 "legacy" zones?

Yes. Some parcels retain legacy zones (e.g., RPD , PUD , Conditional (C) ) that were applied prior to the 2018 rewrite; those legacy rules continue to apply to those parcels. § 18.14.020.C .

Zoning under the Morgan Hill local zoning and planning code, with the controlling citations.

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Last reviewed: July 2, 2026

Overview

Morgan Hill's zoning regulations are codified in Title 18 — ZONING of the Municipal Code and implement the General Plan by dividing the city into base zoning districts, overlays/combining districts, and form-based districts. The City adopts and maintains an official zoning map that shows the base zones, overlays, and any legacy zones; the zoning map is incorporated into the code by reference and is the starting point for any property-specific review. See the zoning code title and the zoning-district/map adoption at § 18.04.010, § 18.14.010, and § 18.14.030.

This page summarizes the Morgan Hill zoning districts and the most decision‑relevant dimensional/land‑use rules in plain English, with district-by-district highlights and code references. If you need the development-standards tables used to size a project, consult the applicable chapter(s) listed below or the city's maintained zoning map and parcel lookup. Also consult the city's rules for how parking is applied in each district; parking rules are cross‑referenced throughout the zoning chapters. development standards

District-by-district breakdown

Notes:

I use the exact district symbols the code uses (for example RDL-20,000, MU-D, FB-UG). See Table 18.14-1 for the full list of base districts. § 18.14.020.
Where a chapter sets development standards, I cite the chapter and the specific table or subsection that contains minimum lot area, setbacks, heights, or other numeric rules. Verify with the zoning map for parcel‑level application. Verify with the jurisdiction for parcel-specific interpretations.

Residential Detached districts (RE, RDL, RDM, RDH)

Purpose: Support single‑family neighborhoods at a range of lot sizes and densities. § 18.16.010.

Typical districts and what matters:

RE‑10, RE‑2.5, RE‑1 — large/semi‑rural lots (10 acres, 2.5 acres, 1 acre formats depending on subzone). § 18.14.020.
RDL‑20,000 / RDL‑12,000 — detached low density with larger urban lots. § 18.16 tables.
RDM‑9,000 / RDM‑7,000 — medium‑density detached. § 18.16.
RDH‑4,500 — higher‑density detached (lots down to 4,500 sq ft); example dimensional standards: front setback first story 15 ft / upper stories 20 ft, height 35 ft, other lot rules in Table 18.16‑4 and § 18.16.030.

Where it applies: typical single‑family neighborhoods per the official zoning map. See § 18.14.030 about the adopted zoning map.

Measureable rules to check in each case: minimum lot area, lot width, front/rear/interior side setbacks, coverage, and maximum height (see Chapter 18.12 for measurement rules and Chapter 18.16 for residential detached development standards).

Residential Attached districts (RAL, RAM, RAH)

Purpose: Allow attached housing types (townhomes, duplexes, small multifamily) at varying densities. § 18.18.010.

Highlights:

RAL‑3,500 / RAL‑3,000 — Residential attached low density; lot/unit area targets and special small‑lot rules. See § 18.18 and the alternative small‑lot standards in Chapter 18.40 (small lot / courtyard / duplex rules and when a design permit is required).
RAM — medium density attached; typical lot/unit minimums (e.g., around 2,000 sq ft per unit) are referenced in Table 18.14‑1 and in Chapter 18.18. § 18.18.010–.020.
RAH — high density attached (often near Downtown). See permitted uses tables in § 18.18.020 and small‑lot alternatives in § 18.40.040.

Where it applies: higher‑density housing areas and some transition zones to mixed‑use corridors; check the zoning map for parcel assignment. Design permits and small‑lot design rules can apply — see design review.

Mixed Use districts (MU‑D, MU‑N, MU‑F)

Purpose: Enable mixed commercial/residential development in Downtown and neighborhood/mixed‑flex settings; Downtown mixed‑use is oriented to pedestrian activity. See Chapter 18.22 and cross‑references. § 18.22 and the figures that show allowed projections and curb setbacks.

Key rules:

Mixed‑use districts have specific front setback/building‑placement rules and residential transition rules where they abut residential zones (see § 18.92.130 Residential Transition Standards). § 18.22.x (building placement figures) and § 18.92.130.

Downtown and formality: Downtown mixed‑use often carries downtown overlays like the DGF (Downtown Ground Floor Overlay) or DTSP (Downtown Specific Plan Overlay) that affect ground‑floor use and signage; see the overlay list in Table 18.14‑2. § 18.14.020.B.

Form‑Based Zoning districts (FB‑N, FB‑C, FB‑UG)

Purpose: Implement corridor and downtown corridor form and frontages; these districts regulate building form, frontage types, and civic spaces as much as use. See Chapter 18.29 — the Form‑Based Code. § 18.29.010–.030.

Highlights (examples pulled from the FB‑UG description):

FB‑UG (Urban General): lot minimum 10,000 sq ft, width 100 ft, front setback 5–25 ft, build‑to zone requiring 65% of frontage within that zone, maximum height 55 ft, maximum building coverage 80%, and ground‑floor ceiling heights and upper‑story stepbacks specified. See § 18.29.030.E and the FB‑UG lot/building tables.
The FBC controls where it applies and supersedes other zoning provisions where conflicts exist; where silent, the zoning code applies. § 18.29.020.C.

Form‑Based districts also include building‑type and frontage‑type standards and cross‑reference parking and signage rules (see parking and signage chapters).

Commercial districts (CO, CN, CG, CH, CS)

Purpose: Provide locations for offices, neighborhood retail, general commercial services, highway/tourist services, and automotive/service uses. § 18.24.010 (purpose statements).

Key standards (Table 18.24‑2 highlights):

Minimum lot areas range from 6,000 sq ft (CO) to 20,000 sq ft (CH).
Typical front setbacks: 20 ft (CO), 25 ft (CN/CG/CS), 40 ft (CH).
Maximum heights: CO 3 stories/30 ft, CG 3 stories/35 ft, CH up to 4 stories/55 ft (see Table 18.24‑2 and § 18.24.030).

Outdoor storage/display rules are district‑specific (for example, CS and CG allow outdoor storage/display with conditional permits per § 18.24.030.C).

Industrial districts (CI, IO, IC, IL, IG)

Purpose: Provide a range of industrial and compatible commercial uses with district‑specific intensity and site standards. See Chapter 18.26 and Table 18.26‑2 for numeric standards. § 18.26.

Example numeric rules (Table 18.26‑2):

Minimum lot area examples: CI 20,000 sq ft, IO 40,000 sq ft, IC 5 acres, with floor‑area ratio and coverage limits by district; height caps vary (see table). Where industrial abuts residential, Residential Transition Standards apply. § 18.26.030 and Table 18.26‑2.

Open Space / Public / Recreation (OS, PF, SRL)

Purpose: Preserve open space, provide public facilities, and accommodate recreational uses. See Chapter 18.28 for permitted uses and standards. § 18.28.010–.020.

OS — limited uses to preserve open space and agricultural character.
PF — schools, government facilities, utilities, parks.
SRL — sports/recreation zones with subzones SRL‑A and SRL‑B for different intensity levels.

Overlay and combining districts (affecting many parcels)

Morgan Hill uses overlays/combining districts to add rules above the base zone. The code lists overlays such as AFSR (Active Fault Surface Rupture), DGF (Downtown Ground Floor), DTSP (Downtown Specific Plan), H (Hillside Combining District), and PD (Planned Development). See Table 18.14‑2 and § 18.14.020.B.

Planned Development (PD) combining district: allows deviation from base standards when a PD master plan is approved; PD rezoning requires a PD master plan and design review. See § 18.30.050 for PD purpose, where allowed, development‑standard flexibility, and public hearing requirements.

Legacy zones (zones applied before the 2018 rewrite that remain on certain parcels) include RPD, PUD, and Conditional (C). These continue to apply to the parcels they cover. § 18.14.020.C.

Quick reference table — most decision‑relevant items

Zoning District (examples)	Typical permitted uses	Key numeric standards (illustrative)	Code reference
RDL‑20,000 / RDH‑4,500	Single‑family detached, limited accessory uses	Lot area min 4,500–20,000 sq ft, front setback 15 ft (first story), height 35 ft (varies by subzone)	§ 18.16.010, Table 18.16‑4.
RAL / RAM / RAH	Townhomes, duplexes, small multifamily	Density units per lot: RAL ~3,500 sq ft/unit, RAM ~2,000 sq ft/unit, height 35 ft (RAH downtown higher)	§ 18.18.010–.020, § 18.40.
MU‑D / MU‑N / MU‑F	Mixed retail/office + residential	Specific frontages, upper‑story stepbacks when abutting residential; see transition standards	§ 18.22.x, § 18.92.130.
CO / CN / CG / CH / CS	Office, neighborhood retail, general commercial	Lot area min 6,000–20,000 sq ft; front setback 20–40 ft; heights 30–55 ft	§ 18.24.030, Table 18.24‑2.
CI / IO / IC / IL / IG	Industrial / campus uses	Lot area min 20,000–5 acres; FAR and coverage limits per district; industrial heights up to 55 ft	§ 18.26 and Table 18.26‑2.
FB‑UG (Form‑Based)	Mixed high‑intensity corridor/mixed use	Lot area 10,000 sf min, front setback 5–25 ft, height up to 55 ft, build‑to 65%	§ 18.29.030–.040 (FBC).

Practical guidance / synthesis (plain‑English)

First check the city's official zoning map to see the base district and any overlays; the map is adopted and kept by the Development Services Department. § 18.14.030.
Use the base‑district chapter for permitted uses and the district development‑standards table for numeric limits (setbacks, lot size, coverage, heights). Cross‑reference the general measurement chapter 18.12 for how setbacks and lot depths are measured.
When a parcel sits inside a Form‑Based area, the Form‑Based Code (Chapter 18.29) controls; where it conflicts with the base code, the FBC controls. § 18.29.020.
Overlay or PD combining districts can significantly change permitted uses and standards; always check the overlays listed in Table 18.14‑2 and any PD master plan documents for parcel‑level rules. § 18.14.020.B and § 18.30.050.
Many districts require design review permits for new projects or design permits for specific housing types; consult the design‑permit rules (see design review).
Parking calculations are in their own chapter and are cross‑referenced by form‑based and other district standards—check the parking chapter for required spaces and placement rules. parking
Accessory Dwelling Units (ADUs) are regulated in Chapter 18.84 and also referenced in the Form‑Based Code; ADU rules are subject to state law as well—see ADUs and California ADU law.

Checklist — what an applicant must confirm / provide

Determine the parcel's base zoning district and any overlay/combining or legacy zone using the official zoning map. § 18.14.030.
Confirm permitted uses and whether the proposal requires a Conditional Use Permit, Administrative Use Permit, or design/demolition permit (check the applicable district chapter and Tables listing P/A/C). See each district chapter (e.g., § 18.18.020, § 18.29.070).
Verify numeric development standards: minimum lot area/width, setbacks, lot coverage, FAR, and height limits in the district table (e.g., Table 18.16‑4, Table 18.24‑2, Table 18.26‑2).
If in a form‑based district, apply the FBC building type and frontage standards and supplemental standards in Chapter 18.29. § 18.29.020–.080.
Prepare site drawings that show how the project meets measurement rules in Chapter 18.12 (setback measurement, lot geometry, slope). § 18.12.x.
Show compliance with Residential Transition Standards if the project abuts a residential zone (§ 18.92.130) and identify required landscape/screening. § 18.92.130.
Provide required parking calculations and layouts per the parking chapter and any district‑specific parking placement rules. parking
Verify whether a PD/master plan, public hearings, or additional environmental review will be required (PD rezoning rules § 18.30.050).

Risks & Ambiguities

Issue	Why it matters	What to verify
Overlay or PD on parcel	Overlays or an approved PD master plan can change permitted uses, setbacks, and heights	Check the zoning map legend and PD master plan documents; see § 18.14.020.B and § 18.30.050.
Form‑Based vs base code conflict	FBC explicitly controls where it applies and can override base code	Confirm whether parcel is inside FBC area and apply § 18.29.020 rules.
Parcel under a legacy zone	Legacy zones bind that parcel to older rules that may differ from general Title 18	Search the zoning map for legacy zone flags and read § 18.14.020.C for continuation rules.
Residential transition requirements	Higher setbacks/stepbacks and landscaping may apply where non‑residential abuts residential	Check § 18.92.130 and the specific district notes (e.g., Tables include notes referencing transition standards).
State law preemption (ADUs, housing law)	ADU and certain housing provisions are subject to state law that limits local discretion	Confirm ADU rules in Chapter 18.84 and cross‑check with California ADU law and § 18.29.020.C(4) (state law supersedes where applicable).

Plain‑English summary

Morgan Hill's zoning code (Title 18) divides the city into named zones like RDL, RAM, MU‑D, CG, and form‑based districts; each zone has its own permitted uses and numeric standards (lot size, setbacks, heights) that you must follow, plus overlays or PD rules that can change those standards — always check the zoning map, the district chapter tables, and the Form‑Based Code when applicable. § 18.14.020, § 18.16, § 18.24, § 18.29.

Information Gaps

The uploaded excerpt does not provide the city’s interactive zoning map URL or parcel‑level lookup output — the code states the map is maintained by Development Services but does not embed the public map link in these extracts. § 18.14.030.
Full permitted‑uses tables for every single district (complete P/A/C matrices for every district) were not fully reproduced in the excerpts I reviewed — many chapters refer to tables (e.g., full Table 18.18‑1, 18.29‑1) that should be consulted directly. Not found in retrieved materials.
Specific design‑permit thresholds, exact parking ratios for every use, and Chapter 18.84 ADU numeric standards are referenced but full text for each was not included in the snippet set. Verify with the full code or the Development Services counter. Not found in retrieved materials.

Source References

Title 18 — ZONING (Morgan Hill Municipal Code): § 18.04.010–.050 (title, purpose, authority).
Zoning districts and map: § 18.14.010, § 18.14.020 (Table 18.14‑1 and Table 18.14‑2 overlays) and § 18.14.030 (map adoption).
Residential Detached: Chapter 18.16, Table(s) (e.g., Table 18.16‑4) and measuring rules in Chapter 18.12.
Residential Attached & small‑lot standards: § 18.18.010–.020 and Chapter 18.40 (small lot alternative and design permit).
Commercial districts and development standards: § 18.24.010 and Table 18.24‑2.
Industrial districts and development standards: Chapter 18.26, Table 18.26‑2.
Open Space / Public / Recreation: Chapter 18.28.
Form‑Based Code: Chapter 18.29 (FBC purpose, district summaries, building type, frontage and supplemental standards). § 18.29.010–.090.
Planned Development combining district: § 18.30.050.
Residential transition and measurement references: § 18.92.130 and § 18.12.x (setback measurement/lot geometry).

Additional internal GoCodebook topic links mentioned above and used inline:

Sources

Retrieved passages

Morgan Hill Zoning Code (Chapter 18.56) High relevance
Morgan Hill Zoning Code (§ 5) High relevance
Morgan Hill Zoning Code (§ 5) High relevance
Morgan Hill Zoning Code (Section 18.92.130) High relevance
Morgan Hill Zoning Code (Section 18.29.070) High relevance
Morgan Hill Zoning Code (Title 18) High relevance
Morgan Hill Zoning Code High relevance
Morgan Hill Zoning Code (§ 5) High relevance

Cited sections

Official Morgan Hill code library

Frequently asked questions

What are Morgan Hill's official zoning districts and where are they listed?

Morgan Hill's base zoning districts (e.g., RE, RDL, RDM, RDH, RAL, RAM, RAH, MU‑D, CN, CG, CI, IG, OS, PF, SRL) and overlay/combining districts are listed in Table 18.14‑1 and Table 18.14‑2; see § 18.14.020 for the district list and § 18.14.030 for the adopted zoning map.

What can I build on an R‑DL (Residential Detached Low) lot in Morgan Hill?

Permitted uses and unit types in RDL are primarily detached single‑family homes and limited accessory uses; numeric standards (minimum lot area, setbacks, coverage, height) are in Chapter 18.16 and the district development tables (e.g., Table 18.16‑4). Check the exact subzone (RDL‑20,000 vs RDL‑12,000) on the zoning map for the applicable minimum lot area. § 18.16.010, Table 18.16‑4.

What are Morgan Hill's setback and height rules for commercial zones?

Commercial development standards (minimum lot area, front/rear/interior/side setbacks, and height caps) are collected in Table 18.24‑2 of Chapter 18.24. For example, front setbacks range from 20 ft (CO) to 40 ft (CH) and heights vary from 30–55 ft depending on district; where a commercial property abuts residential, additional Residential Transition Standards apply. § 18.24.030 and Table 18.24‑2; § 18.92.130.

Do form‑based districts change permitted uses or standards?

Yes. The Form‑Based Code (Chapter 18.29) applies within its mapped FBC area and regulates building form, frontage types, and allowed building types; where the FBC conflicts with other zoning chapters, the FBC controls. Where the FBC is silent, the rest of the zoning code applies. § 18.29.020.

Are there special rules when a commercial or industrial property borders a residential neighborhood?

Yes. The code requires increased setbacks, upper‑story stepbacks, and additional landscaping where a property abuts a residential district; this is implemented by the Residential Transition Standards in § 18.92.130 and is cross‑referenced in multiple district tables (commercial, industrial, mixed‑use). § 18.92.130; see district tables that reference it.

What is a Planned Development (PD) combining district and how does it affect permitted standards?

A PD combining district lets a developer obtain a PD master plan and PD rezoning to deviate from base‑zone standards in exchange for public benefits; allowed uses remain consistent with the General Plan. A PD requires approval of a PD master plan and a zoning map amendment and projects in a PD remain subject to design review. See § 18.30.050.

Where do I confirm the exact zoning that applies to my parcel?

The official zoning map (adopted by the City Council and maintained by Development Services) establishes the parcel’s base district and overlays; the map is incorporated into the code and is the legal starting point. Check § 18.14.030 and the Development Services zoning map for parcel‑specific information. § 18.14.030.

Does Morgan Hill still use any pre‑2018 "legacy" zones?

Yes. Some parcels retain legacy zones (e.g., RPD, PUD, Conditional (C)) that were applied prior to the 2018 rewrite; those legacy rules continue to apply to those parcels. § 18.14.020.C.

Do I need to provide parking for projects in the Form‑Based Code area?

Yes — parking is required and the FBC cross‑references the parking and loading chapter for required spaces and placement; FBC supplemental standards specifically reference parking rules. Consult the parking chapter and the FBC's § 18.29.080.E for how parking is handled. parking

Are ADUs treated differently in form‑based or other districts?

ADU standards are codified in the accessory dwelling chapter and are cross‑referenced in the Form‑Based Code; ADUs are also subject to state ADU law. See Chapter 18.84 for local ADU rules and the FBC cross‑reference, plus state ADU law. ADUs California ADU law ---

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