Cases of fallen windows have hit a 10-year low, with 30 in the first 11 months of the year.
This was down from 43 cases in the same period last year, the Building and Construction Au-thority (BCA) and Housing Board (HDB) announced yesterday.
No one was hurt in this year's cases. Since 2005, there have been seven reported injuries .
"Although the number of fallen windows is low compared with previous years, this downward trend can be sustained only if home owners continue to take responsibility and maintain their windows regularly," said Mr Chin Chi Leong, group director of BCA's Building Plan and Management Group.
Home owners should also get approved window contractors for installation or repair works, he added.
The cases so far this year included 14 casement windows and 14 sliding ones.
Most casement windows fell due to corroded aluminium rivets.
Since 2000, such windows supplied by HDB come with stainless steel rivets.
Under the window retrofitting order implemented in 2004, home owners must replace any aluminium rivets with stainless steel ones.
This applies to windows installed in all residential units, except for those in landed properties and on the ground floor of buildings.
Failure to do so carries a fine of up to $5,000, a jail term of up to six months, or both.
If a window falls due to lack of maintenance, home owners face a maximum fine of $10,000, a jail term of up to one year, or both.
Since 2006, 292 home owners have been fined for fallen windows.
Mr Wong Sang, whose firm Artist Management Concept is an approved window contractor, said greater awareness of the law may have contributed to better maintenance and fewer fallen windows.
"Now everybody knows that if you neglect your windows, you actually become a criminal," he said.
•The BCA and HDB conduct window safety public campaigns twice each year, on June 6 and Dec 12. Approved window contractors and maintenance tips can be found at www.bca.gov.sg/window_safety and www.hdb.gov.sg/window_safety