Renovation Checklist: Before, During, After

A Singapore renovation checklist breaks the job into three stages. Before: set a budget, confirm ownership and HDB or MCST rules, appoint a contractor and secure the HDB renovation permit. During: track progress against a schedule, keep hacking and wet works within permitted hours, and inspect at each milestone. After: do a full defects walkthrough, get the warranty in writing, and settle the final payment only when the snag list is cleared.

Most home renovations in Singapore run six to twelve weeks for an HDB flat and can stretch longer for a resale unit or a condo with strict management rules. The steps below follow that timeline so you know what to sort out at each point, whether you own a BTO, a resale HDB, or a private condo.

What should you do before renovation starts?

Before any hacking begins, get the paperwork and money side settled. Rushing into demolition before permits are approved is the most common way a Singapore renovation goes wrong.

Work through these before you sign anything:

• Set a total budget and hold back roughly ten to fifteen percent as a contingency for surprises.
• Confirm you can renovate now: for a new HDB flat, minimum occupation and key collection rules apply; for a resale flat, complete the purchase first.
• Get quotes from two or three contractors and compare scope line by line, not just the bottom-line price.
• Check that your contractor is on the HDB Directory of Renovation Contractors if you live in an HDB flat.
• Agree on a written contract with a payment schedule tied to work stages, never a large upfront lump sum.

Do I need a permit to renovate in Singapore?

For HDB flats, yes. Most renovation works, especially hacking, plumbing changes, and electrical rewiring, need an HDB renovation permit, which your registered contractor applies for on your behalf. Works can only start after approval, and renovation is generally allowed Monday to Saturday between 9am and 6pm, with no noisy or hacking works on Sundays and public holidays.

Condo and private property owners apply through their MCST or building management instead of HDB. You will usually need to submit contractor details, buy insurance or a deposit, and follow the estate's own permitted hours. Structural changes to any home may also need a Professional Engineer and BCA approval, so ask before touching any load-bearing wall.

What goes on the checklist during renovation?

Once work starts, your job shifts to monitoring. A quick site visit at each major stage catches mistakes while they are still cheap to fix.

Keep an eye on these during the works:

• Confirm hacking and debris removal match what was quoted before tiling covers anything up.
• Check electrical points, switches, and lighting positions against your plan before walls are sealed and painted.
• Inspect concealed plumbing and waterproofing in wet areas before the floor is laid.
• Take photos of concealed works, such as pipes and wiring, for future reference.
• Release progress payments only after each stage passes your check, not before.

How do I check the work after renovation?

The handover is where you protect yourself. Do a slow, room-by-room defects inspection in good daylight and note everything on a snag list before you release the final payment.

Test the things that are hard to fix later:

• Run every tap, flush every toilet, and check for leaks under sinks and around the water heater.
• Switch on all lights, sockets, and the distribution board; test the ELCB or safety switch trips correctly.
• Open and close every door, window, cabinet, and drawer to check alignment.
• Look along tiles, skirting, and painted walls for cracks, hollow tiles, and uneven finishes.
• Get the warranty and any remaining approvals in writing before signing off.

How much should I budget for a Singapore renovation?

Costs vary widely by flat size, condition, and how much you change. A light refresh of a BTO can be modest, while a full resale flat overhaul with hacking, new wiring, and custom carpentry costs considerably more. Rather than trust a single figure, get itemised quotes and match them to your actual scope.

Build in a contingency because hidden issues surface once walls come down, especially in older resale flats and condos. Old wiring, corroded pipes, and failed waterproofing are common and add cost. Treating the ten to fifteen percent buffer as spent-until-proven-otherwise keeps you from stalling mid-project.

When should I bring in a contractor?

Engage a contractor early, ideally before you finalise your design, so the layout, electrical plan, and plumbing runs are worked out together rather than patched later. Whether the job is a full renovation, a rewiring upgrade, or fixing plumbing and waterproofing, using one accountable team keeps the trades coordinated and the warranty clear.

If you want the whole project handled end to end, from permits and hacking through to electrical, plumbing, and the final handover, that is exactly the kind of renovation work we take on for Singapore homeowners. Getting the right team in before demolition is the single best way to keep the checklist above on schedule.

Frequently asked questions

How long does an HDB renovation take? A typical HDB flat renovation runs about six to twelve weeks, depending on the amount of hacking, carpentry, and finishing involved. Resale flats and condos often take longer because of extra approvals and older infrastructure that needs replacing.

Can I renovate my HDB flat on weekends? General renovation is usually allowed on Saturdays within permitted hours, but noisy works such as hacking and drilling are not allowed on Sundays and public holidays. Always check the current HDB rules and your permit conditions.

Should I pay the full renovation cost upfront? No. Tie payments to completed stages and hold back a final portion until the defects walkthrough is done and your snag list is cleared. A large upfront lump sum leaves you with little leverage if problems appear.

Do I need a permit to change my kitchen or bathroom? If the change involves hacking, moving plumbing, or altering wet-area waterproofing in an HDB flat, your contractor will need an HDB permit. Condo owners should clear the same works with their building management first.