In Los Angeles, general noise guidelines are in place between the daytime hours of 7 a.m. Simply type in any address in the City of Los Angeles in the search box and any available public information will be displayed.It is an open ended situation in that the onus is one the builder to renew a permit if not completed within the time frame stated in the permit. Building Construction Hours. Build safe, well, and fast with the City of Los Angeles Department of Building and Safety. The city is among the first in the San Gabriel Valley to impose a timetable for builders. Mitch Miller, Drainage and Grading Supervisor, Building and Safety Division, at (626) 458-6390. How can I obtain the original plans for my house? LADBS reviews your construction plans to verify that they are up to code. If there's construction within the building, you can check your lease or building bylaws for more information regarding construction hours.