Morgan Hill Zoning, Planning & Building Codes

Last reviewed: July 3, 2026

Overview

This page orients readers to Morgan Hill’s local zoning and planning framework as codified in Title 18 of the Morgan Hill Municipal Code. It identifies how the code is organized, the city’s principal zoning district families (including the newer form‑based districts), where to find the major citywide development standards (setbacks, heights, FAR, parking), how design and discretionary review work, and which specific plans, overlays and special tools (planned development, RDCS) are in play. Every citation below points to the Morgan Hill code so you can go straight to the controlling rule (§ citations included).

How Morgan Hill's code is organized

• Title 18 is organized by topic: general provisions and applicability (§ 18.04.060) and interpretation (§ 18.08.010–.020), the zoning map and base districts (§ 18.14.010–.020), district chapters (residential, commercial, industrial, mixed‑use, form‑based), special combining/overlay districts (e.g., Planned Development), common permit rules (Chapter 18.104), design and historic review (Chapter 18.108, Chapter 18.60), and admin/enforcement (see Chapter 18.120) .
• The code is explicit that the zoning rules apply citywide to private development and that no use or structure is allowed until required development review and permits are obtained (§ 18.04.060) .
• Where state or federal law conflicts with the local code, higher law controls (§ 18.04.070.A) — the code repeats this in several chapters (for example the form‑based code) and defers to state law where applicable (§ 18.29.020.C) .

(First time internal links: the page below links to the local topic pages on GoCodebook for deeper, application‑level guidance: [parking], [development standards], [design review], [overlay districts], [ADUs], [California Building Standards Code].)

Zoning district families (what the labels mean)

The base zones and district families are listed in the code table and then developed in separate chapters; common families and the exact symbol names are:

• Residential (multiple flavors): RE‑10, RE‑2.5, RE‑1, RDL (Residential Detached Low), RDM (Residential Detached Medium), RDH (Residential Detached High), RAL (Residential Attached Low), RAM (Residential Attached Medium), RAH (Residential Attached High). These are defined at § 18.14.020 and developed in Chapters such as 18.16 (detached) and 18.18 (attached) .

  • Example: the RDH district carries lot size, setback and height metrics in its table (see Table 18.16‑4) and cites maximum height references to the exceptions chapter (§ 18.56.020) .

• Commercial: CO (Administrative Office), CN (Neighborhood Commercial), CG (General Commercial), CH (Highway Commercial), CS (Service Commercial). The commercial development standards are summarized in Table 18.24‑2 and discussed at § 18.24.030 (lot sizes, front/rear/interior setbacks, max heights) .

• Industrial: CI, IO, IC, IL, IG. Industrial district development standards appear in the industrial chapter tables (Table 18.26‑2) and include minimum lot area, FAR, coverage and setback matrices (see Chapter 18.26) .

• Mixed‑use and Form‑Based: traditional mixed‑use districts (MU‑D, MU‑N, MU‑F) appear in the mixed‑use chapter; in addition, the city has a structured Form‑Based Code (FBC) in Chapter 18.29 that creates form‑based districts such as FB‑UG (Urban General) with tailored build‑to zones, frontage types, permitted building types (the FBC explicitly lists Accessory Dwelling Unit among allowed building types in some FB districts) — see § 18.29.030 and § 18.29.040–.090 for how to use the FBC and district standards .

• Open space / Public / Recreation: OS, PF, SRL — purpose and limited allowed uses are in Chapter 18.28 .

• Overlays & combining districts: recognized overlays/combining zones include the Active Fault Surface Rupture combining district (AFSR), Downtown Ground Floor Overlay (GF / DGF), Hillside (H), and the Planned Development Combining District (PD) among others (the list appears in the zoning map chapter and the PD rules are in § 18.30.050) . The city’s overlay listings are collected at Chapter 18.14 and in the overlay/PD chapters — see the [overlay districts] link for the municipal summaries.

(Throughout this page the district symbols and labels above are shown in bold to match the code language and help you find the right chapter quickly.)

Citywide development standards — where the numbers live and how to read them

• The code uses per‑district development tables for the numeric rules (lot area, lot width/depth, maximum building coverage, FAR, setbacks and height). For commercial districts see Table 18.24‑2 and § 18.24.030; for industrial districts see Table 18.26‑2 in Chapter 18.26; for residential districts see Chapter 18.16 and Table 18.16‑4 (RDH example) and Chapter 18.18 for attached districts .
• Common cross‑cutting rules (setback/height exceptions, projections, and dimensional exceptions) are handled in Chapter 18.56 (examples: height exceptions § 18.56.020, setback exceptions § 18.56.030) and the code’s minor exception and adjustment processes (see § 18.108.070) for up to small percentage deviations .
• Parking rules are in a dedicated chapter (Chapter 18.72) and the FBC cross‑references parking and loading to that chapter; adjustments to parking dimensional standards can be requested under the minor exception rules (§ 18.72.060.K and § 18.108.070) — consult the city parking summary at [parking] and the code at Chapter 18.72 for the matrix of required stalls by use .
• Special residential transition rules apply where non‑residential or higher‑density zones abut residential neighborhoods — those increased setbacks and upper‑story stepbacks are codified at § 18.92.130 and called out in multiple district tables (see notes in Tables 18.24‑2, 18.26‑2, and in the MU‑N/MU‑F notes) .

(First mention link: for the consolidated numerical rules and to see typical setback/height matrices see [development standards].)

Design review, discretionary permits, and the permit path

• Basic rule: “No land use shall be established nor any structure constructed, altered, or moved until all applicable development review and approval processes have been followed and required permits issued” (§ 18.04.060) .
• Common procedural chapters: Chapter 18.104 includes common permit requirements (filing, noticing, hearings) and Chapter 18.108 governs design permits, design review procedures, minor exceptions, and review authorities (director, planning commission, city council) (§ 18.108.040–.070) .
• Design permits require findings that the project: is consistent with the general plan and any applicable specific plan; complies with the zoning code; substantially complies with the design handbook; meets CEQA review; and is not materially injurious to nearby properties (§ 18.108.050.J, subsections 1–6) .
• The Planned Development (PD) combining district is the formal way to depart from base‑zoning numeric standards while establishing site‑specific standards via a PD master plan; PD rezoning requires planning commission input and city council approval and the PD master plan sets the PD development standards (§ 18.30.050.D–.G) .
• The code also allows minor exceptions for small, limited deviations from physical development standards (e.g., up to 10% on many dimensional standards) processed administratively or by commission depending on scope (§ 18.108.070.B–.E) .

(Link the first plain mention of design review to the local [design review] page.)

Specific plans, the Form‑Based Code, overlays and special programs

• The city maintains a dedicated Form‑Based Code (Chapter 18.29) intended to create walkable mixed‑use corridors; the FBC is its own chapter with its own permitted building types, frontage and civic space standards and a regulating plan (§ 18.29.010–.090) — when the FBC applies it controls local zoning conflicts in the FBC area (§ 18.29.020.B–C) . The FBC includes district‑level rules such as the FB‑UG district standards (lot sizes, build‑to range, max 55 ft height, build‑to percentages, parking placement) in § 18.29.030 and related building type sections .
• The code lists multiple overlay and combining districts (see Chapter 18.14 and the overlay list) including PD, Hillside (H), AFSR, and Downtown Ground Floor Overlay (DGF); the overlay chapters and the PD chapter specify where overlay rules alter base standards (§ 18.14.020 and Chapter 18.30) .
• The voter‑adopted Residential Development Control System (RDCS) remains part of Title 18 (Chapter 18.156) and governs timing/allocations for some residential entitlements (it contains its own rules about allotments, phasing and amendments) — see § 18.156.020–.030 for scope and limits .

(First mention link for overlays: [overlay districts].)

Building permits & review — the practical path

• The code makes clear: follow the applicable development review and approval processes before permits are issued (§ 18.04.060) . Typical sequence for most projects:
  1. Pre‑application / preliminary review per Chapter 18.104 (early review by staff and/or Planning Commission for large projects) .
  2. Entitlements: administrative permits (zoning clearances), design permits (§ 18.108.040), conditional use permits or PD rezoning when required, with public notice/hearings where prescribed in Chapter 18.104 .
  3. CEQA compliance as required by the City (design findings reference CEQA review in § 18.108.050.J.4) .
  4. Building permits: issuance follows approved entitlements and compliance with the California Building Standards Code (Title 24) and any Morgan Hill conditions of approval (the code routinely cross‑references Title 24 for safety and construction rules; the state code link is here: [California Building Standards Code]).
• Routine small changes can go through the community development director or be treated as a minor exception (§ 18.108.070.C) while larger deviations require planning commission/city council action (§ 18.108.070.D–E) .

(First mention link for the state building code: [California Building Standards Code].)

State housing law in Morgan Hill — ADUs, SB9, density bonus and controls

• Local code frames state preemption: where state law applies, it controls over a conflicting local rule (§ 18.04.070.A) and the FBC text reiterates that any requirement of state law supersedes Chapter 18.29 (§ 18.29.020.C) .
• Accessory dwelling units (ADUs): Morgan Hill’s form‑based districts explicitly list Accessory Dwelling Unit as a permitted building type in some FB districts (e.g., FB‑UG) — see § 18.29.030 and the building type tables. However, a full, standalone Morgan Hill ADU chapter or detailed local ADU numeric rules were not located in the retrieved materials; for the specific local ADU application and permits consult the city's ADU page and state ADU law guidance ([ADUs] and [California ADU law]). The state ADU statutes impose limits on what a city can require regarding unit size, setbacks, parking and demolition of accessory structures — Morgan Hill’s code accepts that state law will preempt conflicting local requirements (§ 18.04.070.A, § 18.29.020.C) .
• SB9 / lot splits / ministerial small‑lot approvals: the municipal code’s minor exception and subdivision rules reference how lot size and lot width minimums are treated (minor exceptions explicitly exclude approval to change minimum lot area or maximum residential density — § 18.108.070.B.2.a–c) — but I did not find a dedicated local SB9‑implementation chapter in the retrieved materials. Where state parcel‑split laws apply, Morgan Hill’s code would operate along the state rules and through the subdivision chapter (Title 17 references appear in PD submission requirements) — verify with the city’s planning staff for current SB9 implementation because the code references the state supremacy principle (§ 18.04.070.A) .
• Density bonus and affordable housing incentives: Morgan Hill’s code highlights affordable housing as a “substantial public benefit” for PD rezonings (PD public benefit examples include housing affordable to lower‑income households in § 18.30.050.G.8.a) and the RDCS and General Plan shape allowable residential densities and allocations; however, explicit local density‑bonus tables or a local implementing ordinance for California’s density bonus law were not located in the retrieved excerpts — check with the planning department to see the local implementing provisions and any adopted density bonus ordinances (state law will apply where locally silent) (§ 18.30.050) .

(First mention link to the local ADU summary: [ADUs]. For state ADU rules see [California ADU law].)

Practical navigation tips

• To find a district’s numeric standards, open the chapter for that district family (e.g., residential detached Chapter 18.16, residential attached Chapter 18.18, commercial Chapter 18.24, industrial Chapter 18.26, form‑based Chapter 18.29) and then check the cross‑references: development standards tables, Chapter 18.56 for exceptions, Chapter 18.72 for parking, and Chapter 18.108 for design review .
• If your proposed project wants to depart from the base numeric standards, look at the PD combining district rules (§ 18.30.050) for a planned approach or minor exceptions (§ 18.108.070) for small dimensional adjustments .
• For questions about whether state housing law changes a local numeric limit (ADUs, SB9, density bonus), start with the state rules and then the code’s supremacy language (§ 18.04.070.A, § 18.29.020.C) — the code states that state law will control where there is a conflict .

Information Gaps / Verify with the city

• I found explicit provisions for the FBC, PD procedures, RDCS and most district development tables, but a discrete, standalone local ADU chapter or a Morgan Hill‑specific SB9 implementation chapter was not present in the retrieved materials. For concrete ADU filing checklists, adopted local standards that implement (or go beyond) state ADU rules, SB9 procedures, and any locally adopted density bonus ordinance, contact Morgan Hill Planning or check the online municipal code pages not included in the retrieved file set. The code repeatedly says state law controls where there’s a conflict (§ 18.04.070.A) .

Source References

• Morgan Hill Municipal Code — Title 18 (Zoning): applicability, conflicts, transitional provisions (§ 18.04.060, § 18.04.070) .
• Form‑Based Code (Chapter 18.29): purpose, applicability and FB district structure (§ 18.29.010–.090) .
• FB‑UG district sample standards and permitted building types (including Accessory Dwelling Unit) (§ 18.29.030) .
• Zoning districts and base district table (§ 18.14.020) and overlay list (§ 18.14 overview) .
• Commercial district development standards and Table 18.24‑2 (§ 18.24.030) .
• Industrial district development standards and Table 18.26‑2 (Chapter 18.26) (§ 18.26 tables) .
• Planned Development combining district (PD) rules and findings (§ 18.30.050) .
• Design permits and findings (§ 18.108.040 and § 18.108.050.J) and Minor Exceptions (§ 18.108.070) .
• Residential Development Control System (RDCS) Chapter 18.156 (§ 18.156.020–.030) .
• GoCodebook local pages (for application‑level how‑to): [Morgan Hill Zoning], [Morgan Hill Development Standards], [Morgan Hill Parking], [Morgan Hill Design Review], [Morgan Hill Overlay Districts], [Morgan Hill ADUs], [California Building Standards Code], [California ADU law].