There is no definitive answer
to this but I will try to assist you.
I will give some examples. It is actually illegal to sound a car
horn between the hours of 11:30 PM and 7 AM although the sounding of a car horn
is not continuous. Even a beep between those prohibited
hours is an offence.
At any other time, if it was sounded continually it then becomes
The noise of jackhammers
from next door comes into the same bracket. There is no statutory period
however when it is illegal to make this kind of noise.
Under the circumstances, it is whatever is reasonable. There are
several elements to this
How long it is going to continue for in the number of days/weeks
how long it continues for each day during that time
the hours that it happens during.
It is impossible to do some work without making some noise. It
would not be
unreasonable if they did not make continual noise say before 8 AM or after 8 PM.
However if the noise was continual between 8 AM and 8 PM that
would be unreasonable.
So really comes down to what is reasonable in the circumstances.
I think 9 PM is unreasonable. However I also think that from 9 AM
until 9 PM continually every day is also unreasonable.
There are some exact figures:
Between 7AM and 7PM its 41dB, between 7PM and 11PM its 37dB and from 11PM to
7AM its 31dB , however it is a little more complicated than that as those
figures are usually taken from within your home and need to be sustained at
those levels for a period of time. Readings must be taken by someone who is qualified to do so
The equipment is expensive so
leave it to the Env Health dept at the council.
If the noise is deliberate then an anti-social behaviour order (ASBO) can be
issued to the offender They will also incur fixed penalty fines in the process.
30 - 40 dB is no louder than whispering but it needs to be continuous on an
Environmental health officers equipment (i.e 1 second bursts of a car horn
would not suffice (though this is still an offence after 11PM or before 7am in
a built up area) but an uninterrupted bass line in music...boom, boom, boom,
Ultimately, if you don't want to bring court proceedings, you can
raise the issue with the
Environmental Health Department at the Council who can have a quiet word with
them and tell them to keep it between certain hours or they can issue them with
a noise abatement notice
Does that answer the question? Can I assist further?
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