NEA regulates noise levels from construction sites and industrial operations using a set of permissible noise limits. NEA also sets noise emission standards for vehicles. Recognising that Singapore's continued rapid development - from new residential and commercial structures to improved and expanded transport infrastructure - brings with it some inevitable inconveniences, NEA works together with industry and the public to establish acceptable levels of noise. Details on NEA's permissible noise levels for construction sites and industrial premises are as follow:

Construction Noise Control Maximum Permissible Noise Levels for Construction Work Commenced on or after 1st October 2007

Noise Regulation

Monday to Friday	7am - 7pm	7pm - 10pm	10pm - 7am
Types of affected buildings
(a) Hospital, schools, institutions of higher learning, homes for aged sick, etc	60 dBA (Leq* 12 hrs)	50 dBA (Leq 12 hrs)55 dBA (Leq 5 mins)
	75 dBA (Leq 5 mins)
(b) Residential buildings located less than 150m from the construction site	75 dBA (Leq 12 hrs)	65 dBA (Leq 1 hr)	55 dBA (Leq 1 hr)
	90 dBA (Leq 5 mins)	70 dBA (Leq 5 mins)	55 dBA (Leq 5 mins)
(c) Buildings other than those in (a) and (b) above	75 dBA (Leq 12 hrs)	65 dBA (Leq 12 hrs)
	90 dBA (Leq 5 mins)	70 dBA (Leq 5 mins)

Public Holiday	7am - 7pm	7pm - 10pm	10pm - 7am
Types of affected buildings
(a) Hospital, Schools, Institutions of higher Learning, Homes for aged sick, etc	60 dBA (Leq* 12 hrs)	50 dBA (Leq 12 hrs)
	75 dBA (Leq 5 mins)
(b) Residential buildings located less than 150m from the construction site	75 dBA (Leq 12 hrs)	55 dBA (Leq 5 mins)
	75 dBA (Leq 5 mins)	-
(c) Buildings other than those in (a) and (b) above	75 dBA (Leq 12 hrs)	65 dBA (Leq 12 hrs)
	90 dBA (Leq 5 mins)	70 dBA (Leq 5 mins)

No Work Rule on Sundays and Public Holidays

In addition to the setting of the permissible noise limits, NEA has also implemented a rule prohibiting work on Sundays and Public Holidays (PH) for construction sites located within 150m away from residential premises and noise sensitive premises as follows:

Construction Work Commenced On or After 1st September 2010, No work allowed from 10.00pm on Saturday/eve of Public Holiday to 10.00am on Sunday/Public Holiday
Construction Work Commenced On or After 1st September 2011, No work allowed from 10.00pm on Saturday/eve of Public Holiday to 7.00am on the following Monday/day after the Public Holiday

Boundary Noise Level Limits for Factories The maximum permitted boundary noise levels are as follows:

Types of affected premises	Maximum permitted noise levels (reckoned as the equivalent noise level over the specified period) in decibels (dBA)
	Day (7am-7pm)	Evening (7pm-11pm)	Night (11pm-7am)
Noise Sensitive Premises	60	55	50
Residential Premises	65
		60	55
Commercial Premises	70	65	60

Types of affected premises	Maximum permitted noise levels (reckoned as the equivalent noise level over 5 minutes) in decibels (dBA)
Types of affected premises	Day (7am-7pm)	Evening (7pm-11pm)	Night (11pm-7am)
Noise Sensitive Premises	65	60	55
Residential Premises	70	65	60
Commercial Premises	75	70	65
Factory Premises	75	70	65