Santa Clarita Setbacks & Height Limits — Residential Zones

Fact-checked against the City of Santa Clarita residential-development standards and current California ADU law on September 21, 2026.

Santa Clarita's Unified Development Code uses NU (Non-Urban Residential) and UR (Urban Residential) districts rather than a conventional R-1/R-2 sequence. The City's published development-standards table gives a consistent base yard pattern across NU1–NU5 and UR1–UR5, while lot size, density, and accessory-building height vary by district.

Current NU and UR Base Standards

The City's table also notes special side-yard rules:

• reverse-corner lots use 20 ft for NU1–NU5 and 10 ft for UR1–UR5;
• qualifying residential buildings adjacent to commercial or mixed-use property lines can require a 25-ft setback.

Accessory-Structure Height Is Not Uniform

The previous page broadly described accessory structures as having lower limits “around 15 to 25 ft.” The City's development-standards table is more specific:

• NU1–NU5: accessory height 35 ft;
• UR1: accessory height 35 ft;
• UR2–UR5: accessory height 20 ft.

Always check the current UDC and any Special Standards District before applying the base value.

Mixed-Use and Commercial Districts

The City table lists different standards for mixed-use districts. For example, the mixed-use zones shown in the Housing Element use 50-ft maximum main-building height, while CR, CC, CN, BP, and I use 35 ft in the published table.

Specific plans and corridor plans can replace these base standards.

Special Standards Districts

Happy Valley, Placerita Canyon, Sand Canyon, and other special-plan or standards areas can add or modify setbacks, height, grading, and design requirements.

Hillside development can also be affected by separate grading and landform requirements.

California State ADU Law

Current State ADU Law is codified at Government Code §§66310–66342, replacing the older statutory numbering cited on the previous page.

For new-construction ADUs, current state law generally limits required side and rear setbacks to 4 ft. Height varies by statutory ADU configuration and local implementation.

See the Santa Clarita ADU rules page for local guidance.

How to Check a Property

1. Confirm the exact NU, UR, mixed-use, commercial, specific-plan, or other zoning designation.
2. Use the current UDC table for that district.
3. Check reverse-corner and adjacency rules.
4. Check Special Standards Districts, corridor plans, specific plans, and hillside conditions.
5. Apply current state housing-law overrides separately where relevant.
6. Confirm parcel-specific questions with Santa Clarita Planning.

Official Sources

• City of Santa Clarita — Housing Element development standards
• City of Santa Clarita Building & Safety
• California HCD — Accessory Dwelling Units

This guide is informational only. The current UDC, specific plans, state law, and parcel-specific conditions control.