Lancaster, CA Building Setbacks & Zoning: Setback Rules (2026)
Key Facts
- RR-2.5 front/rear setback
- 40 ft front, 30 ft rear
- R-15,000 front/rear setback
- 20 ft front, 20 ft rear
- R-7,000 front/rear setback
- 14 ft front, 15 ft rear
- R-15,000/10,000/7,000 interior side
- 5 feet, flat
- Porch encroachment allowance
- Up to 6 ft into front setback
- Governing section
- LMC § 17.08.060
Summary
Lancaster's yard setbacks scale with the zone: a rural RR-2.5 lot needs a 40-foot front yard and 30-foot rear yard, while a standard R-7,000 lot needs only a 14-foot front and 15-foot rear yard. Municipal Code Section 17.08.060 sets the full minimum setback table by residential zone and building type.
A.Single-Family House on Rural Residential Lot...ZONES RR-2.5 / RR-1 / SRR. BUILDING PLACEMENT (MIN. SETBACKS): Front yard (feet) 40 / 30 / 30. Rear yard (feet) 30 / 25 / 20. Interior side yard: minimum (feet) 20 / 15 / 10. Interior side yard: total sum of two yards (feet) 40 / 30 / 25. Street side yard (feet) 40 / 30 / 20. ... B.Single-Family House or Duplex on Residential Lot...ZONES/LOT TYPE R-15,000 / R-10,000 / R-7,000 / SFR Corner Duplex. BUILDING PLACEMENT (MIN. SETBACKS): Front yard setback (ft.) 20 / 16 / 14 / 16. Porch encroachment: Porch may encroach up to 6' into front yard setback. Rear yard (ft.) 20 / 20 / 15 / N/A. Interior side yard: (ft.) 5 / 5 / 5 / 10. Street side yard (ft.) 15 / 15 / 10 / N/A.
Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 10 - 2025).
Full Breakdown
060, Development regulations by building types, is Lancaster's master setback table for residential construction. 5 zone, dropping to 30 feet in both RR-1 and SRR; rear yards run 30 feet, 25 feet and 20 feet across those same three zones; interior side yards run 20, 15 and 10 feet, with a combined two-side minimum of 40, 30 and 25 feet; and street side yards run 40, 30 and 20 feet. The code adds that garages in these rural zones must sit at or behind the wall plane where the front entrance is located, except for individual custom homes.
For a single-family house or duplex on a standard residential lot, front yard setbacks drop to 20 feet in R-15,000, 16 feet in R-10,000, 14 feet in R-7,000, and 16 feet for SFR corner lots and duplex lots; rear yards run 20, 20 and 15 feet, with corner/duplex lots exempt (N/A); interior side yards run a flat 5 feet in the three standard zones and 10 feet for corner/duplex lots, with a combined two-side minimum of 20 and 15 feet; and street side yards run 15, 15 and 10 feet, again not applicable to corner/duplex lots.
A porch may encroach up to 6 feet into the required front yard setback regardless of zone, and corner lots with side-yard driveway access must keep a minimum 20-foot driveway and street side yard setback.
Violations & Fines
Building or maintaining a structure that intrudes into a required setback is a zoning violation under Municipal Code Section 17.04.220, enforceable as a misdemeanor under Chapter 1.12. The city's building and safety and planning staff can require an owner to remove or relocate an encroaching structure, and a certificate of occupancy or building permit can be withheld or revoked for noncompliant construction.
Frequently Asked Questions
What is the front yard setback for a standard Lancaster lot?
How much smaller are rural residential setbacks than standard residential setbacks?
Can my porch stick out into the front setback?
Do corner lots get different setbacks in Lancaster?
Sources & Official References
Other rules in Lancaster
California rules heatmap·Compare Lancaster to another location·View the California building setbacks & zoning overview
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