Acoustic Design Requirements in Los Angeles

LA Municipal Code Title 11 + CBC + ANSI S12.60 compliance guide for Los Angeles architects and acoustic consultants.

City of LA requires noise studies for projects near freeways, airports, and rail corridors under CEQA environmental review.

Primary Standard

LA Municipal Code Title 11 + CBC + ANSI S12.60

Certification Body

ASA (Acoustical Society of America)

RT60 Targets for Los Angeles

Room TypeRT60 TargetStandard
Classroom≤ 0.6sANSI S12.60
Recording studio0.2–0.4sIndustry standard
ResidentialSTC 50 (CBC)CBC

Common Building Types in Los Angeles Requiring Acoustic Design

▶

Multi-family residential

▶

Entertainment industry studios

▶

Mixed-use transit-oriented development

▶

Adaptive reuse of industrial buildings

Acoustic Consultants in Los Angeles

Firms commonly working on acoustic design in Los Angeles include Veneklasen Associates, Charles M. Salter Associates, Shen Milsom & Wilke, and TEECOM. AcousPlan does not endorse specific firms \u2014 this list reflects commonly encountered practices in the Los Angeles market. For projects requiring professional acoustic assessment, we recommend engaging a consultant accredited by ASA (Acoustical Society of America).

Frequently Asked Questions: Los Angeles Acoustics

What does CEQA require for noise in LA projects?▾
California Environmental Quality Act (CEQA) requires noise analysis for projects that may generate or be exposed to significant noise levels. In LA, this typically applies to projects near freeways (within 500 feet), near LAX or Van Nuys Airport flight paths, or near Metro rail lines. The LA CEQA Thresholds Guide defines significance criteria: 5 dB increase over ambient for substantial noise increase, and interior levels meeting Title 24 (45 dB CNEL for residential).
Does California have specific building acoustic codes?▾
Yes, the California Building Code (CBC) Chapter 12 Section 1207 requires STC 50 for airborne sound and IIC 50 for impact sound between dwelling units. Title 24 Part 2 Section 1207.4 additionally requires interior CNEL 45 for residential spaces exposed to exterior CNEL 60+. These requirements are more stringent than the base IBC and are enforced through the Building Department plan check process.
What acoustic challenges are specific to LA?▾
LA-specific challenges include: freeway noise (LA has more freeway lane-miles than any US city, affecting vast residential areas), aircraft noise from LAX, Burbank, and Van Nuys airports, entertainment venue noise in Hollywood and downtown, seismic isolation joints that create acoustic weak points, and the prevalence of wood-frame multi-family construction (Type V) which requires careful acoustic detailing to meet CBC STC/IIC requirements.

Other United States City Guides

New York CityChicagoSan Francisco
← View all United States acoustic standards

Check Your Los Angeles Acoustic Compliance

Enter your room dimensions and surface materials to instantly calculate RT60 and check compliance with LA Municipal Code Title 11 + CBC + ANSI S12.60.

Open Free Calculator