Renovation contractors - take note!

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Extracted from the attachment in HDB website

Supervise The Renovation Works

After getting the permit from HDB, your registered renovation contractor
must display the Notice of Renovation Works outside your flat until all
your renovation work is completed. Your registered renovation contractor
is also required to keep the immediate neighbours informed of the renovation
works by serving them a notice. Such notice must be served at least 3
days in advance before the commencing of any renovation.
You are responsible for the renovation work in your flat. As such you are
to ensure that the work carried out by your registered renovation
contractor is according to HDB's requirements.
Note the general renovation works can only be carried out between
8.00am to 6.00pm daily. However, noisy renovation works, such as
demolition of walls, removing wall/ floor finishes, cutting of tiles, etc.
are restricted from 9.00am to 5.00pm daily during weekdays. Noisy
renovation works are not allowed to be carried out on Saturdays,
Sundays and Public Holidays.
Your renovation contractor is allowed to use not more than two HDB
approved hand-held power tools or their equivalent at any one time to
demolish walls and/or removal of wall/ floor finishes. Such works must
be completed within three consecutive days. The list of approved tools
is available at HDB Branch Offices.
All the renovation works must be completed within one month for existing
blocks and four months for new blocks from the date of the renovation
permit. Upon the completion of renovation works, please remember to
inform HDB Branch Office concerned immediately.