HDB Renovation Cost in Singapore: A Full Breakdown

Renovating an HDB flat is one of the biggest one-off spends most Singaporean households will make, yet the final bill can swing widely depending on your flat type, its condition, and how much built-in carpentry you want. This guide breaks down where the money actually goes, how costs differ between a BTO and a resale flat, and the hidden items that catch first-time renovators off guard. Prices here are indicative ranges to help you budget, not fixed quotes.

What goes into an HDB renovation bill

A renovation quote is really a bundle of separate trades, each priced on its own. The main cost centres are:

• Carpentry — built-in wardrobes, kitchen cabinets, feature walls, TV consoles and vanity tops. Almost always the single largest item.
• Masonry & tiling — hacking, wall and floor tiling, kitchen and bathroom works, cement screeding.
• Flooring — overlay vinyl, laminate, tiles or engineered timber where you are not retiling from scratch.
• Electrical & lighting — additional power points, rewiring, distribution board work, downlights and cove lighting.
• Plumbing & sanitary — relocating pipes, installing basins, taps, water heaters and floor traps.
• Painting — the whole flat, usually one of the cheaper line items per square foot.
• Others — false ceilings, glass and aluminium works, haulage, protection and cleaning.

Across most HDB jobs, carpentry and masonry together typically make up well over half of the total, which is why two flats of the same size can be quoted very differently.

Carpentry: usually your biggest line item

Carpentry commonly accounts for anywhere from a quarter to around 40% of a full HDB renovation, according to published 2025–2026 cost guides. It is labour-intensive, and Singapore’s manpower costs are high, so every extra tall cabinet or full-height wardrobe adds up quickly.

What drives carpentry cost:

• Length and height — carpentry is often priced per foot run, so a floor-to-ceiling wardrobe costs more than a standard-height one.
• Material grade — laminate is the workhorse; sintered stone, fluted panels, solid surface and spray-paint finishes cost more.
• Internal fittings — soft-close hinges, pull-out baskets, drawers and organisers are extras.

If you need to trim your budget, carpentry is the most flexible lever: keep runs shorter, buy some loose furniture instead of building everything in, and choose mid-range laminates over premium finishes.

Masonry, tiling and flooring

Masonry covers hacking, tiling and wet works, and it is the second-biggest centre on most jobs. Retiling a bathroom fully is far more expensive than leaving the existing tiles and overlaying, because it involves hacking, disposal, waterproofing and re-screeding. Flooring cost depends heavily on your choice: overlay vinyl and laminate are budget-friendly and quick, while full tile or engineered timber flooring costs more and takes longer.

One HDB-specific point: if you own a new BTO, you are not allowed to replace bathroom wall or floor tiles for the first three years, because doing so risks damaging the original waterproofing membrane. This actually saves new flat owners money, since bathroom retiling is a big-ticket item.

Electrical, plumbing and painting

These trades are smaller individually but essential. Adding power points, relocating switches and installing lighting adds up if you go heavy on cove lighting and downlights. Plumbing cost rises when you move pipes or a floor trap, rather than just swapping fittings in place. Painting the whole flat is comparatively affordable, though feature-wall techniques and premium paints add a little.

How cost varies by flat type and BTO vs resale

Two things move the number most: the size of the flat and whether it is new or resale.

• Flat size — a 5-room simply has more wall, floor and cabinet to finish than a 3-room, so the same spec costs more.
• BTO vs resale — a new BTO starts with fresh infrastructure, so you are mostly adding finishes. Resale flats, especially older ones, often need overhauls first: hacking old built-ins, rewiring, replacing the electrical board, retiling tired bathrooms and repiping.

Published 2025–2026 renovation cost guides broadly put a 3-room BTO in the region of the mid-$20,000s to mid-$40,000s and a 4-room BTO roughly $40,000–$60,000, with resale flats commonly running 20–40% higher for equivalent work. Treat these as ballpark ranges — your quote depends on scope. As anchors, FC Interior Design’s published BTO packages start from $29,800 for a 3-room, $35,800 for a 4-room and $42,800 for a 5-room, and resale packages from $38,800, $45,800 and $52,800 respectively.

What pushes your cost up or down

Levers that push cost up:

• Extensive hacking and reconfiguration, such as open-concept kitchens or combining rooms.
• Full retiling versus overlay.
• Lots of built-in carpentry and premium finishes like sintered stone, fluted wood and spray paint.
• False ceilings throughout and heavy feature lighting.

Levers that bring it down:

• Keeping the original layout and wet areas where they are.
• Mixing loose furniture with built-ins.
• Overlaying floors instead of hacking.
• Prioritising the kitchen and wardrobes, then phasing the rest.

Hidden costs first-timers forget

• HDB renovation permit — your contractor applies for it; certain works such as hacking, flooring and window replacement require written HDB approval.
• Haulage and disposal — removing old fittings and debris, plus lift and staircase protection.
• Electrical and plumbing licensing — some works must be carried out by licensed professionals.
• Appliances, lighting, sanitary ware and blinds — often bought separately from the renovation contract.
• Aircon, curtains and movers — easy to leave out of the initial budget.
• Contingency — set aside around 10% for surprises, especially in older resale flats.

How renovation packages work

Many firms advertise a headline package price for a flat type. A package usually bundles the common trades — some carpentry, tiling or overlay, painting, basic electrical and a defined scope — at a fixed starting figure. The key is to read what is and is not included. Package prices are a floor, not a ceiling: added carpentry, upgraded finishes and extra hacking are quoted on top.

When comparing packages, look past the headline number and check the itemised scope, the carpentry length included, the finish grade, and whether haulage, permit and warranty are inside the price. A firm listed in the HDB Directory of Renovation Contractors, such as FC Interior Design (HDB-Approved Contractor HB-09-2619C, renovating Singapore homes since 1990), can legally apply for your renovation permit and carry out permitted works — worth confirming before you sign.

Frequently asked questions

How much does it cost to renovate an HDB flat?

It depends on flat type, condition and scope. As a rough guide, published 2025–2026 cost guides put many BTO renovations in the region of the mid-$20,000s to low-$60,000s, with resale flats commonly 20–40% higher. Get an itemised quote for an accurate figure.

Why is carpentry so expensive?

Carpentry is custom-built and labour-intensive, and manpower costs in Singapore are high. It commonly makes up a quarter to around 40% of a full renovation, so it is the biggest lever on your total.

Is a resale flat more expensive to renovate than a BTO?

Usually yes. Resale flats often need hacking of old built-ins, rewiring, a new electrical board, retiling and repiping before design work begins, which commonly adds 20–40% over an equivalent BTO.

What is not included in a typical renovation package?

Packages usually exclude or limit appliances, lighting fixtures, sanitary ware, curtains, aircon, extra carpentry and premium finishes. Always confirm the itemised scope, permit, haulage and warranty before comparing prices.

For fixed, transparent pricing, compare our BTO renovation packages and resale HDB renovation packages. See also our guide on how to choose a renovation contractor in Singapore.