Cupertino — Development Standards

Overview

Cupertino’s zoning rules in Title 19 set objective, district-specific “development standards” that control setbacks, height, lot coverage, floor area ratio (FAR), private open space, and related site design features. These standards are separate from building-safety rules under the California Building Standards Code and vary by district. Always start by confirming your base zoning under Cupertino Zoning and any applicable Overlay Districts, then apply the dimensional standards below and any corridor- or General Plan-based height/setback adjustments.

Bottom line: Cupertino uses objective numbers for each zone (e.g., front setbacks, stepbacks, height caps, lot coverage/FAR). In neighborhoods with sensitive adjacencies or sloped terrain, extra side/rear stepbacks and hillside FAR formulas apply (§ 19.28.070; § 19.36.070; § 19.38.070; § 19.40.060).

District-by-district development standards

R-1 — Single-Family Residential (R1-5; R1-6, 7.5, 8, 10, 20, etc.; R1-6e)

• Purpose/typical uses: Not found in source materials.
• Where it applies: Standard single-family neighborhoods citywide (§ 19.16.010).
• Key standards (§ 19.28.070):
  • Lot coverage: 45% of net lot area. Roof overhangs/patios gain an extra 5% if unenclosed on at least three sides (A).
  • FAR: 0.45 (B).
  • First-floor setbacks: Front 20 ft; interior sides 5 ft both sides with a 15 ft combined minimum on R1-6+; corner street side 12 ft; rear 20 ft (may reduce to 10 ft via Minor Residential Permit if a usable rear yard ≥ 20× lot width remains) (E.1–3).
  • Second-floor setbacks: Front 25 ft; interior sides 25 ft combined (no side < 10 ft); rear 25 ft (F).
  • Second-story decks/balconies: Front 20 ft (may encroach up to 3 ft into front yard), Side 15 ft, Rear 20 ft (G).
  • Height: 28 ft, max two stories; districts with “i” suffix limited to one story (≤ 18 ft) (J.1–2).
  • Building envelope: 10-ft vertical + 25° inward plane for single-story; 16-ft vertical + 25° inward plane for two-story sections (J.3).
  • Basements/lightwells: setback Side 5 ft, Rear 10 ft; one lightwell up to 10×10 ft allowed on single-story with basement; railings max 3 ft 6 in (I).
• Design pointers: Two-story design principles apply where design review is triggered (§ 19.28.070 C; § 19.168.030; Appendix A).

R-2 — Residential Duplex

• Purpose/typical uses: Not found in source materials.
• Where it applies: Duplex lots where zoned (§ 19.16.010).
• Key standards (§ 19.32.060):
  • Lot coverage: 40% of net lot area (A).
  • Height: Two stories, not exceeding 30 ft; “i” suffix: one story, ≤ 18 ft (B).
  • Setbacks:
    • Front: 20 ft (E.a.i).
    • Side (interior): first floor = 20% of lot width (min 6 ft); second floor = at least +3 ft more than first-floor setback (E.b.i).
    • Corner street side: 12 ft first floor; 15 ft second floor (E.b.ii).
    • Rear: 20 ft or 20% of lot depth (greater); may reduce to 10 ft if rear yard area ≥ 850 sf or 20× lot width (E.c).
  • Second-story decks/patios: Front 17 ft, Side 15 ft, Rear 20 ft (F).
  • Encroachments: Architectural features may project 2 ft 6 in into required yards (G).
  • Fences/parking: Must meet Chapter 19.48 (C) and Chapter 19.124 (D); see Cupertino Parking.

R-3 — Multiple-Family Residential (Medium to High Density)

• Purpose/typical uses: Not found in source materials.
• Where it applies: Medium to high density multifamily areas (§ 19.16.010; § 19.36.060).
• Lot basics (§ 19.36.060): Minimum net lot area 9,300 sf and minimum lot width 70 ft.
• Building standards (§ 19.36.070):
  • Lot coverage: 50% (≤ 4 units) and 55% (≥ 5 units), subject to Gov. Code § 65913.11 consistency (A).
  • Height: ≤ 30 ft (≤ 4 units) and ≤ 30 ft unless General Plan LU-2 sets more (≥ 5 units) (B).
  • Front yard:
    • Abutting arterial/major collector: 35 ft from face of curb (first floor); upper floors step back per table (C.1).
    • Other streets: 20 ft from property line (C.1).
  • Side yard:
    • Interior: 6 ft first floor; 10 ft second floor/portions ≥ 24 ft height (≤ 4 units). For ≥ 5 units: 10 ft first floor; 12 ft upper floors (C.2).
    • Street side: 12 ft first floor; 18 ft upper floors (C.2).
  • Rear yard:
    • Base: 20 ft or 20% of lot depth (greater).
    • Main building may approach 10 ft if usable rear yard ≥ 20× lot width (≤ 4 units).
    • For ≥ 5 units, add 10 ft for floors more than one story higher than adjacent primary residential structures (C.3).
  • Private open space: For ≤ 4 units: see § 19.36.070(D) (includes percentage-based criteria). For ≥ 5 units: 60 sf/unit min with 6 ft clear dimension (D).
  • Universal design (≥ 5 units): No-step entry, 32 in clear doors, and one wheelchair-maneuverable bathroom per unit (F).
  • Other: Keep corner/sidewalk sight triangles clear (G); no parking in setbacks when adjoining R‑1 (J); max two driveways per frontage (K); Chapter 19.48 fences (I) and 19.124 parking apply (J).

R-4 — Multiple-Family Residential (High/Very High/Highest Density)

• Purpose/typical uses: Not found in source materials.
• Where it applies: Highest-density multifamily areas (§ 19.16.010; § 19.38.060).
• Lot basics (§ 19.38.060): Minimum net lot area 12,000 sf; lot width 70 ft. Density per General Plan (A–C).
• Building standards (§ 19.38.070):
  • Lot coverage: 55% of net lot area (A).
  • Height: ≤ 70 ft (B).
  • Front yard:
    • Arterial/major collector: 35 ft from face of curb (first floor); Floors 2–3 remain 35 ft; Floors 4+ = 18 ft from property line (C.1).
    • Other streets: 12 ft first floor; 18 ft upper floors (C.1).
  • Side yard: Interior 10 ft first floor and 10 ft upper floors plus +10 ft more for floors more than one story higher than adjacent primary residential structures; street side 12 ft (C.2).
  • Rear yard: 30 ft first floor; Floors 2–3: 30 ft; Floors 4+: add +15 ft (C.3).
  • Private open space: 48 sf/unit, 4 ft clear dimension (D).
  • Universal design: Same elements as R‑3 (E).
  • Other: Keep sight triangles clear (F); no parking in setbacks when adjoining R‑1 (H); access limits (I); fences/parking chapters apply (G, H; Chapter 19.48; Chapter 19.124).

RHS — Residential Hillside

• Purpose/typical uses: Not found in source materials.
• Where it applies: Parcels designated Residential Hillside; steeper topography, viewsheds (§ 19.40.020).
• Submittals: Provide topo (≤ 10 ft contours), map slopes ≥ 30%, and show proximity to prominent ridgelines (§ 19.40.040).
• FAR and slope factor (§ 19.40.060 A):
  • Ministerial housing capped at 800 sf/unit unless meeting specific criteria; otherwise FAR is the lesser of: 6,500 sf; or for < 10,000 sf lots, 45% of net lot area × slope factor; or for ≥ 10,000 sf lots, 4,500 sf + 59.59 sf per 1,000 sf over 10,000, × slope factor.
  • Slope adjustment: No reduction < 10% slope; subtract 1.5% allowable floor area for each % between 10–30%; 30% reduction when slope > 30%.
• Height: ≤ 30 ft (B).
• Setbacks (§ 19.40.060 C–D):
  • Front: 20 ft where slope < 20%; 10 ft where slope ≥ 20%, but driveway/garage must enable off-street parking; second/third floors 25 ft.
  • Side: Interior 10/15/20 ft (first/second/third-story or > 20 ft portions); corner street side 15/15/20 ft (C.2).
  • Rear: 20/25/25 ft (first/second/third-story); special 4 ft setbacks for lots developed per Gov. Code § 65852.21 (SB 9) (C.3).
  • Decks/balconies: Front 17 ft, Side 15 ft, Rear 20 ft minimum (D).
  • Downhill façade: Average 7 ft 6 in second-story offset for 75% of the wall plane, min 5 ft; other downhill wall/retaining-wall limits also apply (E).
• Relief: A “Hillside Exception” may deviate from these if strict findings are met (§ 19.40.070–.080).

R1C — Single-Family Cluster

• Purpose/typical uses: Clustered single-family with shared open space.
• Where it applies: Sites rezoned to R1C with an approved development plan (§ 19.44.050 A; § 19.16.010).
• Site development (§ 19.44.050):
  • Density: Per General Plan; hillside areas use slope-density/general plan formulas (B–C).
  • Private outdoor space: Required for each unit (E).
  • Visual/noise design: Prevent visual intrusion; noise study may be required (F–G).
• Specific standards (§ 19.44.060):
  • Setbacks: Corner lots 25 ft and maintain 40 ft corner triangle clear (B.1); units at edges follow adjacent zones (B.2).
  • Second-story decks/patios: Front may encroach 3 ft; Side 15 ft; Rear 20 ft (B.3).
  • Height: 30 ft; increases possible if no adverse adjacent impact (C).
  • Streets/walks: Private streets built to City street standards (min 24 ft curb-to-curb; sidewalks 4 ft 6 in), lighting, easements per table (E).
  • Common areas/HOA: Bonding, maintenance, CC&Rs/article requirements (F).

A / A-1 — Agricultural and Agricultural-Residential

• Purpose/typical uses: Agricultural use with limited residential development (§ 19.24.020).
• Lot basics (§ 19.24.040): Minimum lot area equals the number after the zoning symbol × 1,000 sf (e.g. A‑215 = 215,000 sf; A1‑43 = 43,000 sf). The base minimum lot size is 215,000 sf; incidental residential use requires 43,000 sf per dwelling unit (A–B). Each lot must be shaped so a 200 ft square can be inscribed in it (C).
• Building standards (§ 19.24.050):
  • Lot coverage: 40% of net lot area in both districts; FAR 45% in A‑1 (none stated for A) (A.1–2).
  • Setbacks (first and second floor, both districts): Front 30 ft; Side 20 ft; Rear 25 ft (A.3).
  • Second-story decks and patios: Front 22 ft; Side 20 ft; Rear 25 ft (A.3.c).
  • Height: 28 ft maximum; “i” suffix areas are limited to one story (B.1–2).
  • Hillside height exception: the Planning Commission may approve more than 28 ft on hillside lots (average slope ≥ 10%) upon findings — but never more than 35 ft for a principal structure or 20 ft for an accessory structure, and no more than 20 ft on a prominent ridgeline at or above the 450‑ft contour (B.3).
  • Architectural features may extend up to 3 ft into a required yard, but no closer than 3 ft to any property line (C.2).
  • Accessory structures follow Chapter 19.100; solar-purpose setback/height variations require an Administrative Conditional Use Permit (D–E).

CG — General Commercial

• Purpose/typical uses: Commercial retail/services (uses in Chapter 19.60; not restated here).
• Where it applies: Commercial corridors and centers (§ 19.16.010; § 19.60.020).
• Development standards (§ 19.60.060):
  • Lot area/coverage: No minimum; must fit required parking/loading; comply with any applicable Specific Plan/General Plan standard (A).
  • Height: 30 ft unless otherwise permitted by the General Plan or a Specific Plan (B).
  • Setbacks:
    • Front: Set per General Plan/Specific Plan policies; if not specified, apply CG standards to ensure light/air/visibility and context (C.1).
    • Sides/rear when abutting residential/agricultural:
      • Interior side: 12 ft, or increase to 1 ft per ft of building height from eave/parapet (more restrictive applies) (C.2.a.i).
      • Street side: 12 ft (C.2.a.ii).
      • Rear: 20 ft, or 1.5 ft per ft of building height (more restrictive applies) (C.2.b).
  • Adjacency controls: Noise attenuation, masonry 8 ft sound wall at residential edge, odor abatement systems, lighting per Chapter 19.102, landscaping/irrigation per Chapters 14.15 and 14.18; mechanical equipment screened (D–I).

OA, OP, ML, MP — Office and Industrial

• Purpose/typical uses: Uses listed in § 19.64.020 (e.g., administrative/professional offices; light industrial; industrial park).
• Where it applies: Office and industrial districts (§ 19.16.010; § 19.72.020).
• Development standards: Not found in source materials. Verify district-specific height/setbacks/coverage with the jurisdiction. Applicability statements confirm compliance is required (§ 19.72.020).

P — Planned Development

• Where it applies: Sites rezoned to P with a PD plan (§ 19.16.010).
• Development standards: Governed by the PD approvals; no general numeric standards in the materials provided (§ 19.80.020). Verify with the jurisdiction.

Citywide ADUs/JADUs — overlay rules that modify base standards

• Applicability: ADUs are allowed on lots in residential or mixed-use residential districts subject to this chapter (§ 19.112.020).
• Streamlined ADUs/JADUs (§ 19.112.030):
  • Single-family lots: Up to three ADUs per lot in any combination (attached, detached, conversion, JADU) (Table 19.112.030A.2).
  • New detached ADU ≤ 800 sf: Side/rear setbacks 4 ft; height 18 ft (up to 20 ft near major transit/high quality transit corridor); attached ADU = 25 ft or principal height, whichever is lower (Table 19.112.030A.3–4).
  • No additional parking required for ADUs (Table 19.112.030A.6).
• Multifamily lots (§ 19.112.030B): Interior conversions up to 25% of existing units (or at least one), plus up to 8 detached ADUs (with limits) (Table 19.112.030B.2).
• Non-streamlined ADUs (§ 19.112.040): Local standards may apply, but at minimum an ≤ 800 sf ADU at the stated heights with 4 ft side/rear setbacks is always allowable.
• ADUs otherwise follow underlying zoning standards for coverage, FAR, height, and parking, except where modified by Chapter 19.112 (§ 19.112.020). See Cupertino ADUs and California ADU law.

Cross-cutting development requirements that often affect site plans

• Fences: Must comply with Chapter 19.48; check height/setback limits before siting walls or privacy fencing (various districts reference).
• Parking and access: Chapter 19.124 governs counts and layout; R‑3 and R‑4 prohibit parking in setbacks abutting R‑1 (§ 19.36.070 J; § 19.38.070 H). See Cupertino Parking.
• Design review findings: Projects must address scale transitions, materials harmony, screening of equipment/storage, lighting spillover, and neighborhood buffering (§ 19.168.030). See Cupertino Design Review.
• Density bonus: Affordable housing may seek incentives, concessions, parking reductions, and waivers that can modify otherwise-applicable development standards; submittals must include the information listed in § 19.56.060. Coordinate early with staff.
• Required artwork: Developments ≥ 10,000 sf of new floor area/expansion are subject to Cupertino’s Artwork requirement (§ 19.148.020).

Most-used numeric standards at a glance

Information Gaps

• Development standards tables for OA, OP, ML, MP, BA, BQ, T, OS, PR, FP, TH are not in the source materials. Verify with the jurisdiction.
• Specific Plan-based development standards (e.g., “Heart of the City”) supersede Title 19 where applicable (§ 19.16.010). Not found in source materials.

Checklist

• Confirm your base zoning and any combining/specific-plan designations (§ 19.16.010; see Cupertino Land Use).
• Apply the zone’s objective standards: height, setbacks/stepbacks, lot coverage, FAR/open space (see district sections above).
• If on a hillside lot, compute FAR using the slope factor and apply hillside setbacks/offsets; include required topo/ridgeline mapping (§ 19.40.040; § 19.40.060).
• If adjacent to single-family, apply any added stepbacks (R‑3/R‑4) and keep parking out of setback areas adjacent to R‑1 (§ 19.36.070 J; § 19.38.070 H).
• For arterials/collectors, use curb-face measurements where specified (R‑3/R‑4 front setbacks) (§ 19.36.070 C.1; § 19.38.070 C.1).
• For “i”-suffix neighborhoods, limit to one story/height cap where applicable (R‑1, R‑2) (§ 19.28.070 J.2; § 19.32.060 B).
• If proposing ADUs/JADUs, apply Chapter 19.112 streamlined setbacks/heights/quantities; otherwise follow underlying zoning as modified (§ 19.112.020–.040; see Cupertino ADUs).
• Check Cupertino Design Review triggers and ensure objective criteria (scale transition, screening, lighting) are addressed (§ 19.168.030).
• Confirm parking counts/layout (Chapter 19.124) and fence/wall limits (Chapter 19.48).
• For qualifying commercial or large mixed-use, meet noise/odor/landscaping/mechanical screening standards (CG) (§ 19.60.060).
• If project ≥ 10,000 sf, meet Required Artwork obligations (§ 19.148.020).
• If pursuing density bonus or waivers, include materials required by § 19.56.060; consider Cupertino Variances and Exceptions if needed.

Risks & Ambiguities

Plain-English Summary

Most Cupertino projects boil down to the numbers in your zoning district. Single-family homes (R‑1) max out around two stories and must respect 20–25 ft front/rear setbacks and 25° roof envelopes; duplexes (R‑2) are similar with a 40% lot coverage cap. Multifamily zones (R‑3/R‑4) add lot-coverage caps, curb-based front setbacks on arterials, upper-story stepbacks near homes, and private open space per unit. Hillside lots use a slope-adjusted FAR formula with stricter height/setback rules. Commercial edges next to homes need larger side/rear yards and noise/odor screening.

Source References

• § 19.04.030 Compliance with Regulations
• § 19.08.030 Definitions (selected terms)
• § 19.16.010 Zoning Districts Designated
• § 19.20.010 Applicability (A, A‑1, R‑districts, TH)
• § 19.24.020 Applicability (A, A‑1)
• § 19.24.040, § 19.24.050 A/A‑1 Site and Building Development Regulations
• § 19.28.070 R‑1 Building Development Regulations
• § 19.32.060 R‑2 Building Development Regulations
• § 19.36.060 R‑3 Site Development Regulations
• § 19.36.070 R‑3 Building Development Regulations
• § 19.38.060 R‑4 Site Development Regulations
• § 19.38.070 R‑4 Building Development Regulations
• § 19.40.020, § 19.40.040, § 19.40.060, § 19.40.080 RHS Regulations/Exceptions
• § 19.44.050, § 19.44.060 R1C Site and Specific Development Standards
• § 19.48 Fences (referenced)
• § 19.56.060 Density Bonus Application Requirements
• § 19.60.020, § 19.60.060 CG Development Standards
• § 19.64.020 Office/Industrial Uses Table
• § 19.68, § 19.72.020 OA/OP/ML/MP Applicability (as cited)
• § 19.80.020 Planned Development Applicability
• § 19.100 Accessory Buildings/Structures (referenced)
• § 19.102 Glass and Lighting Standards (referenced)
• § 19.112.020–.040 ADU/JADU Regulations
• § 19.124 Parking Regulations (referenced)
• § 19.148.020 Required Artwork Applicability
• § 19.168.030 Design Review Findings

Source passages

• Cupertino Zoning Code (§ 19.08.030) High relevance show source text
• Cupertino Zoning Code (§ 19.168.030) High relevance show source text
• Cupertino Zoning Code (§ 19.80.020) Medium relevance show source text
• Cupertino Zoning Code (§ 19.36.070) Medium relevance show source text
• Cupertino Zoning Code (§ 19.28.070) Medium relevance show source text
• Cupertino Zoning Code (§ 19.40.020) Medium relevance show source text
• Cupertino Zoning Code (§ 19.64.020) Medium relevance show source text
• Cupertino Zoning Code (§ 19.112.030) Medium relevance show source text
• Cupertino Zoning Code (§ 19.44.060) Medium relevance show source text
• Cupertino Zoning Code (§ 19.44.050) Medium relevance show source text
• Cupertino Zoning Code (§ 19.38.060) Medium relevance show source text
• Cupertino Zoning Code (§ 19.60.060) Medium relevance show source text
• Cupertino Zoning Code (§ 19.56.060) Medium relevance show source text
• Cupertino Zoning Code (§ 19.148.020) Medium relevance show source text
• Cupertino Zoning Code (§ 19.38.070) Medium relevance show source text
• Cupertino Zoning Code (§ 19.40.040) Medium relevance show source text

Cited sections

• § 19.04.030 Compliance with Regulations (§ 19.04.030)
• § 19.08.030 Definitions (selected terms) (§ 19.08.030)
• § 19.16.010 Zoning Districts Designated (§ 19.16.010)
• § 19.20.010 Applicability (A, A‑1, R‑districts, TH) (§ 19.20.010)
• § 19.24.020 Applicability (A, A‑1) (§ 19.24.020)
• § 19.28.070 R‑1 Building Development Regulations (§ 19.28.070)
• § 19.32.060 R‑2 Building Development Regulations (§ 19.32.060)
• § 19.36.060 R‑3 Site Development Regulations (§ 19.36.060)
• § 19.36.070 R‑3 Building Development Regulations (§ 19.36.070)
• § 19.38.060 R‑4 Site Development Regulations (§ 19.38.060)
• § 19.38.070 R‑4 Building Development Regulations (§ 19.38.070)
• § 19.40.020, § 19.40.040, § 19.40.060, § 19.40.080 RHS Regulations/Exceptions (§ 19.40.020)
• § 19.44.050, § 19.44.060 R1C Site and Specific Development Standards (§ 19.44.050)
• § 19.48 Fences (referenced) (§ 19.48)
• § 19.56.060 Density Bonus Application Requirements (§ 19.56.060)
• § 19.60.020, § 19.60.060 CG Development Standards (§ 19.60.020)
• § 19.64.020 Office/Industrial Uses Table (§ 19.64.020)
• § 19.68, § 19.72.020 OA/OP/ML/MP Applicability (as cited) (§ 19.68)
• § 19.80.020 Planned Development Applicability (§ 19.80.020)
• § 19.100 Accessory Buildings/Structures (referenced) (§ 19.100)
• § 19.102 Glass and Lighting Standards (referenced) (§ 19.102)
• § 19.112.020–.040 ADU/JADU Regulations (§ 19.112.020)
• § 19.124 Parking Regulations (referenced) (§ 19.124)
• § 19.148.020 Required Artwork Applicability (§ 19.148.020)
• § 19.168.030 Design Review Findings (§ 19.168.030)

• Official Cupertino code library