11B-305 Clear Floor or Ground Space — 2025 California Building Code
California Building Code (Title 24, Part 2) · 2025 edition · updated 2026-09-25 · California
CBSC: official editions, supplements and errata
Italicized text is a California amendment to the model code, as printed in the official publication.
Cite as: 2025 California Building Code (Title 24, Part 2) § 11B-305 · Effective January 1, 2026 · Official source: Building Standards Commission
11B- 305.1 General. Clear floor or ground space shall comply with Section 11B- 305 .
11B- 305.2 Floor or ground surfaces. Floor or ground surfaces of a clear floor or ground space shall comply with Section 11B-302. Changes in level, slopes exceeding 1:48, and detectable warnings shall not be permitted.
Exception: Reserved.
11B-42 2025 CALIFORNIA BUILDING CODE
ACCESSIBILITY TO PUBLIC BUILDINGS, PUBLIC ACCOMMODATIONS, COMMERCIAL BUILDINGS AND PUBLIC HOUSING
11B- 305.3 Size. The clear floor or ground space shall be 30 inches ( 762 mm) minimum by 48 inches ( 1219 mm) minimum .
FIGURE 11B- 305.3—CLEAR FLOOR OR GROUND SPACE
11B- 305.4 Knee and toe clearance. Unless otherwise specified, clear floor or ground space shall be permitted to include knee and toe clearance complying with Section 11B- 306 . 11B- 305.5 Position. Unless otherwise specified, clear floor or ground space shall be positioned for either forward or parallel approach to an element.
FIGURE 11B- 305.5—POSITION OF CLEAR FLOOR OR GROUND SPACE
11B- 305.6 Approach. One full unobstructed side of the clear floor or ground space shall adjoin an accessible route or adjoin another clear floor or ground space. Clear floor or ground space may overlap an accessible route, unless specifically prohibited elsewhere in this chapter. 11B- 305.7 Maneuvering clearance. Where a clear floor or ground space is located in an alcove or otherwise confined on all or part of three sides, additional maneuvering clearance shall be provided in accordance with Sections 11B- 305.7.1 and 11B- 305.7.2. 11B- 305.7.1 Forward approach. Alcoves shall be 36 inches ( 914 mm) wide minimum where the depth exceeds 24 inches (610 mm).
FIGURE 11B- 305.7.1—MANEUVERING CLEARANCE IN AN ALCOVE, FORWARD APPROACH
11B- 305.7.2 Parallel approach. Alcoves shall be 60 inches ( 1524 mm) wide minimum where the depth exceeds 15 inches ( 381 mm).
FIGURE 11B- 305.7.2—MANEUVERING CLEARANCE IN AN ALCOVE, PARALLEL APPROACH
ACCESSIBILITY TO PUBLIC BUILDINGS, PUBLIC ACCOMMODATIONS, COMMERCIAL BUILDINGS AND PUBLIC HOUSING
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