Construction is allowed during Cupertino daytime hours, which are defined as being between the following hours:
- Weekdays – 7:00am to 8:00pm
- Weekends – 9:00am to 6:00pm
Construction, other than street construction greater than 750 feet of a residential area, is prohibited on holidays, except that construction conducted by a homeowner or resident of a single-family dwelling using domestic construction tools is allowed on holidays between the hours of 9:00am to 6:00pm
Noise levels should not exceed the following limits:
- Residential Point of Origin - 60 dBA
- Nonresidential Point of Origin - 65 dBA
Brief Noise Incidents
During the daytime period only, brief noise incidents exceeding limits in other sections of this chapter are allowed; providing, that the sum of the noise duration in minutes plus the excess noise level does not exceed twenty in a two-hour period. For example, the following combinations would be allowable:
Noise Increment Above Normal Standard
|
Noise Duration in 2-Hour Period
|
5 DBA
|
15 minutes
|
10 dBA
|
10 minutes
|
15 dBA
|
5 minutes
|
19 dBA
|
1 minute
|
For multifamily dwelling interior noise, Section 10.48.054, the sum of excess noise level and duration in minutes of a brief daytime incident shall not exceed ten in any two-hour period, measured at the receiving location.
Grading, Construction and Demolition
A. Grading, construction and demolition activities shall be allowed to exceed the noise limits of Section 10.48.040 during daytime hours; provided, that the equipment utilized has high-quality noise muffler and abatement devices installed and in good condition, and the activity meets one of the following two criteria:
1. No individual device produces a noise level more than eighty-seven (87) dBA at a distance of twenty-five (25) feet (7.5 meters); or
2. The noise level on any nearby property does not exceed eighty (80) dBA.
B. Notwithstanding Section 10.48.053A, it is a violation of this chapter to engage in any grading, street construction, demolition or underground utility work within seven hundred fifty (750) feet of a residential area on Saturdays, Sundays and holidays, and during the nighttime period, except as provided in Section 10.48.030.
C. Construction, other than street construction, is prohibited on holidays, except as provided in Sections 10.48.029 and 10.48.030.
D. Construction, other than street construction, is prohibited during nighttime periods unless it meets the nighttime standards of Section 10.48.040.
E. The use of helicopters as a part of a construction and/or demolition activity shall be restricted to between the hours of nine a.m. and six thirty p.m. Monday through Friday only, and prohibited on the weekends and holidays. The notice shall be given at least twenty-four hours in advance of said usage. In cases of emergency, the twenty-four hour period may be waived.
For more information on noise control, please refer to Chapter 10.48 of the Cupertino Municipal Code.