Chandler, AZ Noise Ordinances: Aircraft Noise (2026)

" Section 35-3001 establishes three airport noise overlay areas plus a clear zone, measured using the day-night average sound level (Ldn) methodology: ANO-1 covers the area between the post-2005 55-Ldn and 60-Ldn contour lines, ANO-2 between 60-Ldn and 70-Ldn, and ANO-3 within the 70-Ldn-and-greater contour. Section 35-3002's noise attenuation matrix ties construction requirements directly to these zones: category 2 requires a noise level reduction (NLR) of 15 decibels to achieve a maximum 45-decibel interior noise level, category 3 requires an NLR of 25 decibels for the same 45-decibel interior target, and category 4 permits the use only if noise does not exceed 45 decibels within the structure.

Category 8 additionally bars any building from being located within a clear zone, though parking, stormwater retention, landscaping and yard setbacks may still be sited there. Before any building permit issues in an ANO area, § 35-3003 requires certification by "an acoustical engineer or registered architect specifying that the construction practices and/or materials of the structure will achieve the interior noise level required in the noise attenuation matrix," and false or inaccurate certification data voids the permit and can block issuance of an occupancy permit.

Section 35-3004 additionally requires property owners in the district to grant the City an avigational easement releasing it from liability for noise, dust, vibration, fumes and fuel-particle damage claims before any building or development permit issues.