Hawthorne, CA Building Setbacks & Zoning: Setback Rules (2026)
Key Facts
- R-1 front setback
- 15 feet minimum
- R-1 interior side setback
- 5 feet (10% of width)
- R-1 street side setback
- 10 feet (20% of width)
- R-1 rear setback
- 5 feet minimum
- Garage facing street
- 18-foot minimum setback
- Current standards adopted
- Ord. 2240, effective 11/14/2023
Summary
Hawthorne's R-1 zone requires a 15-foot front setback, a 5-foot interior side yard (10 feet on a street side), and a 5-foot rear yard for single-family homes under the Use and Bulk Table in Hawthorne Code § 17.14.020, with a garage facing the street needing an extra three feet for an 18-foot setback.
Table of Uses and General Standards for R-1 Zone Minimum Lot Size Minimum Lot Width Minimum Lot Depth Minimum Front Setback Side Setback Interior/Street Minimum Rear Setback Maximum Lot Coverage Maximum Building Height Minimum Open Space Per Unit Single-family detached dwelling 5,000 50 100 15 5/10 5 50% 22 —... Notes: 2 For garage facing street, minimum setback of 18 feet required. 3 Side setback is 10% of lot width up to 5 feet, but not less than 3.5 feet. 4 Side yard adjacent to a street shall have a minimum width of 20% of lot width, up to 10 feet.
Full Breakdown
The Table of Uses and General Standards for the R-1 Zone in § 17.14.020 sets a 15-foot minimum front setback, a 5-foot interior side setback (10 feet if the side yard fronts a street), and a 5-foot rear setback for single-family detached dwellings, libraries, mobile homes, and most other R-1 uses. Three footnoted formulas refine those numbers: a garage facing the street needs a minimum 18-foot setback (Note 2); the interior side setback is 10% of lot width up to 5 feet, but never less than 3.5 feet (Note 3); and a side yard next to a street needs a minimum width of 20% of lot width, up to 10 feet (Note 4).
On through lots, the rear setback matches whatever the front setback requires (Note 5), and detached accessory buildings may be built to the lot line if their walls carry a one-hour fire rating and have no windows or doors within three feet of the line (Note 7). Each residential zone carries its own version of this table: R-2 under Chapter 17.16, R-3 under Chapter 17.18, and R-4 under Chapter 17.19, generally following the same 15-foot front, 5/10-foot side, and 5-foot rear pattern for base residential uses.
All of these zone-specific tables sit on top of Chapter 17.42's general yard rules, including the requirement that every required yard stay open and unobstructed from the ground to the sky (§ 17.42.020) and the corner-lot vision-clearance triangle that caps fences, hedges and trees at 3.5 feet within 15 feet of a corner (§ 17.42.090). The current R-1 table was last amended by Ordinance 2240, effective November 14, 2023.
Violations & Fines
Building or maintaining a structure that encroaches on a required setback is a Title 17 violation enforceable under Hawthorne Code § 1.20.010: the city attorney can prosecute it as a misdemeanor, punishable by up to a $1,000 fine and six months in jail or both, or instead charge it as an infraction or civil administrative citation, and the encroaching condition can be treated as a public nuisance subject to abatement, with each day it continues a separate offense.
Frequently Asked Questions
What is the front yard setback in Hawthorne's R-1 zone?
How wide must side yards be for a Hawthorne single-family home?
Do these setbacks apply outside the R-1 zone?
Sources & Official References
Other rules in Hawthorne
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