Building Setbacks & Zoning in Pasadena, CA

If you live in Pasadena or are thinking about moving there, building setbacks & zoning are one of those things you probably won't think about until they affect you directly. Pasadena has 3 specific rules on the books covering different aspects of building setbacks & zoning, and some of them might surprise you.

Lot Coverage Limits

Pasadena caps roofed building coverage on RS and RM-12 lots at 35 percent, or up to 40 percent if everything above 35 percent is single-story. Lots of 7,200 square feet or less carry no maximum. Municipal Code Section 17.22.040, Table 2-3, sets the formula by lot size across the RS-1 through RM-12 districts.

Key details: Site ≤7,200 sf: No maximum coverage. 7,200-11,999 sf: 35%, up to 40% if single-story. ≥12,000 sf: 35% or 4,800 sf, whichever greater. Coverage over 35%: Single-story portion only. Applies to: RS-1 through RM-12 zoning districts.

Building beyond the lot coverage cap is treated the same as any other Zoning Code violation: a structure erected, enlarged, or maintained contrary to Table 2-3 is declared a public nuisance under Section 17.78.060, subject to a Stop Work Order and administrative penalties under Chapters 1.25 and 1.26 of the Municipal Code. Section 17.78.070 makes each day of over-coverage construction a separate offense, and City plan check staff will not issue a Building Permit for a project that exceeds the table's coverage percentage in the first place.

Structure Height Limits

Pasadena caps main structures in its RS districts at 28 feet on lots under 75 feet wide and 32 feet on wider lots, plus separate top-plate limits for each story. Municipal Code Section 17.22.040, Table 2-3, ties every height figure to the encroachment plane rules in Section 17.40.160.

Key details: Site <75 ft wide: 28 ft max height. Site ≥75 ft wide: 32 ft max height. First-story top plate: 10 ft maximum. Second-story top plate: 20 ft (23 ft in historic/overlay zones). Chimney exception: +2 ft over height limit.

A structure built above the applicable height limit, or above the first- or second-story top-plate maximums, is unlawful and a public nuisance under Section 17.78.060, triggering a Stop Work Order and administrative penalties under Municipal Code Chapters 1.25 and 1.26. Section 17.78.070 makes each day of the violation a separate offense, and a Minor Conditional Use Permit granted to match a pre-2009 structure's height can be revoked under Section 17.78.090 if its conditions are not met.

Setback Rules

Pasadena's RS and RM-12 development standards set side setbacks at 10 percent of lot width (5 to 10 feet), corner-side setbacks at 10 percent of lot width (10 to 25 feet), and rear setbacks from 25 feet in RS-1 down to 10 feet in RM-12. Front setbacks default to the blockface average but never less than 25 feet.

Key details: Side setback: 10% lot width, 5-10 ft. Corner side setback: 10% lot width, 10-25 ft. Rear setback: 25 ft (RS-1) down to 10 ft (RM-12). Front setback: Blockface average, minimum 25 ft. Encroachment plane: 30-degree slope from 6 ft height.

A structure that encroaches into a required side, rear, corner-side, or front setback, or crosses the encroachment plane, is unlawful and a public nuisance under Section 17.78.060, and the City can issue a Stop Work Order and administrative penalties under Chapters 1.25 and 1.26 while the encroachment stands. Section 17.78.070 treats each day of the violation as a separate offense. Because setbacks are checked at plan check, most encroachments surface before a Certificate of Occupancy is issued.

The Bottom Line

Pasadena's building setbacks & zoning rules are a mixed bag. Some areas are strict, others are relaxed, and the details matter. The best approach is to check the specific rule that applies to your situation rather than assuming Pasadena is broadly strict or permissive.

These rules come from Pasadena's publicly available municipal code. For complete penalty schedules, exemption details, and answers to common questions, see the individual ordinance pages throughout this guide.