Construction can start earlier based on Province wide COVID-19 changes
As a response to COVID-19, in April 2020, the Province of Ontario amended construction noise regulations that would overrule municipal bylaws across the province, including Newmarket's Noise By-law. As a result, construction is allowed to begin at 6 a.m. and go until 10 p.m. in Newmarket. This change will be in effect until October 2021.
You can read the full details in the Provincial Municipal Act Amendment.