Singapore HDB Kitchen Carpenter: Permit and Hacking Basics

A Singapore HDB kitchen carpenter works inside a rulebook that flat owners rarely read until something goes wrong. HDB's Renovation Control Rules exist to keep blocks safe and neighbours sane, and they touch your kitchen the moment a wall moves or a pipe shifts. Knowing the basics before you start saves you a fine of up to S$5,000 and a wall you pay to rebuild.

What needs a permit, what does not

You need HDB's written approval for any wall hacking, floor tile hacking, raising the floor, new plumbing points, new electrical points beyond existing ones, and window changes. You do not need a permit for painting, swapping light bulbs and switches, placing loose furniture, minor carpentry, or overlay flooring that does not hack the original.

Moving a sink or a drainage point is the one homeowners forget. The plumbing riser is fixed, but shifting the sink along the wall still needs approval and runs S$2,000 to S$6,000 per relocation. Adding a power point for a second oven also needs a permit, because it changes the electrical load HDB approved for the flat.

The timeline you plan around

Standard hacking, tiles, false ceilings, fixtures, and existing carpentry, clears the same day through the portal when your licensed contractor files a clean drawing. Structural work, hacking or building a wall, relocating a door, needs a Professional Engineer endorsement and takes two to four weeks. Either way, the permit must be displayed and neighbours within two units notified five days before noisy work begins.

Completion has a hard deadline. BTO flats must finish approved renovation within three months of the permit, resale flats within one month. Miss it and you ask for an extension before it expires, not after. HDB can compound offences with a composition sum, and unpaid sums go to court.

Hours, tools, and your neighbours

General renovation runs 9am to 6pm, Monday to Saturday. Noisy work like hacking and drilling runs 9am to 5pm on weekdays only. Sundays and public holidays are silent by rule. The contractor may use only two approved handheld power tools at a time, and DIY work stays between 7am and 10:30pm with noise kept low.

The Notice of Renovation goes up outside your flat for the whole job, and written notice goes to neighbours five days ahead. These are not courtesy steps, they are what keep a complaint from becoming a stop-work order that freezes your timeline.

Keeping the permit valid to the end

A permit granted is not a permit forever. HDB expects all approved works finished within the window, three months for a BTO and one for resale, counted from the grant date. If your carpenter slips, the contractor asks HDB for an extension before the date passes, not after. An expired permit with open works is a stop-work order waiting to happen, and it freezes every other trade behind the kitchen. Watch the calendar as closely as the drawing, because a missed deadline costs more in idle labour than the permit ever did, and the neighbour complaints start the moment the noise stops matching the paper.

Permits are paperwork until they are fines. Let the licensed contractor file the drawing, watch the five-day clock, and keep the noise inside the hours, and the kitchen gets built without a visit from HDB.