Most local noise ordinances designate "quiet hours"—for example, from 10 p.m. to 7 a.m. on weekdays and until 8 or 9 a.m. on weekends. So, running a power mower might be permitted at 10 a.m. on Saturday, but not at 7 a.m. Some universally disturbing sounds are commonly banned or restricted.
The subject could be in violation of Phoenix City Code Noise Ordinance 23-12 if construction work is creating unreasonably loud, disturbing and unnecessary noise as described by Phoenix City Code 23-14(h): Building construction.
Sec. 23-13. Noises detrimental to life and health, or public peace and welfare prohibited. Noise of such character, intensity or duration as to be detrimental to the life or health of any individual or in disturbance of the public peace and welfare is hereby prohibited.
However, if you live in a flat it is likely that the noise will be heard by your neighbours so it is advisable not to use after 11pm when people are trying to sleep. This may still be too late for some people, if they have young children sleeping or they wish to relax in the evening and 9pm may be more appropriate.
Noise Ordinance (P-23) Therefore, it is hereby declared to be the policy of Maricopa County to prohibit excessive, unnecessary, disruptive, and annoying noises from all sources. The Sheriff's Department is responsible for enforcement of the Maricopa County Noise Ordinance (PDF).
It shall be unlawful and a violation of this chapter to conduct or permit any activity, or to produce, create or allow any noise beyond that person's property boundary or on a public street or highway, which exceeds ninety-two (92) dB(A) between a.m. and p.m. daily or sixty-five (65) dB(A) between p.m.
It shall be unlawful and a violation of this chapter to conduct or permit any activity, or to produce, create or allow any noise beyond that person's property boundary or on a public street or highway, which exceeds ninety-two (92) dB(A) between a.m. and p.m. daily or sixty-five (65) dB(A) between p.m.
In the R-43 rural residential dwelling district, every lot used for a residential purpose shall have an area of not less than one acre and a width of not less than one hundred forty-five (145) feet.
Building permits are required for all structures with the exception of a structure that is less than 200 square feet with no electrical, plumbing or mechanical.