“How much will my renovation cost?” is the first question every homeowner asks, and the honest answer is: it depends — a lot. Renovation budgets in Singapore range enormously with the home, the scope and the finishes. Rather than quote figures that quickly date, this guide explains what actually drives the cost, so you can build a realistic budget and spend it well.
General guidance only — prices vary widely and change over time. Always get current, itemised quotes for your own project.
What actually drives renovation cost
Renovation cost is set by a handful of big levers: the scope (how much you are changing), the amount of hacking and demolition, the carpentry and built-in joinery, the materials and finishes you choose, and labour. Of these, carpentry is often the single largest line in a home renovation, and finishes are where budgets swing most. Understanding which levers move the most money lets you direct your budget where it matters and trim where it does not.
HDB, condo and landed: different baselines
The type of home sets the starting point. An HDB flat renovation is the most contained; a condominium is broadly similar but with management rules and sometimes higher finish expectations; a landed house is in another league entirely, especially if structural A&A works or a rebuild are involved. The bigger and more structural the project, the more the cost is driven by construction and professional fees rather than finishes alone.
The biggest cost items
- Carpentry and built-ins — wardrobes, kitchen cabinets, feature joinery; usually the largest single cost.
- Hacking and masonry — demolition, new walls, and floor or wall works.
- Flooring and tiling — material choice swings this widely.
- Bathrooms — small but labour-intensive, with waterproofing that must be done right.
- Electrical and plumbing — rewiring and pipework, often partly hidden costs.
- Painting and finishing — the final layer that ties it together.
Why hacking and structural work add cost
The more you change the bones of a home, the more it costs. Removing walls means new beams and supports; structural alterations bring in engineers and approvals. Even non-structural hacking takes time and generates disposal costs. This is one reason working with the existing layout is cheaper than fighting it — and why anything touching the structure, as covered in what you can and can’t hack, needs to be planned and priced carefully rather than assumed.
Where people overspend — and where they save
Budgets tend to blow out on extensive custom carpentry, premium finishes chosen late, and scope that creeps once work starts. They are best protected by deciding the scope up front, choosing where to splurge and where to keep it simple, and resisting mid-project additions. The smart savings are in restraint — fewer, better choices — not in cutting the things that are hard to redo, like waterproofing or electrical work, where a cheap job is a false economy.
Don’t forget the hidden costs
A realistic budget allows for the things that do not appear on the headline quote: permits, the cost of upgrading materials once you see samples, disposal, temporary accommodation if you cannot live in during works, and the inevitable surprises an older home throws up. A contingency — a sensible buffer over the quoted figure — is not pessimism, it is planning. Renovations that run over budget usually did not allow for the predictable unpredictables.
Getting and reading quotes
The only way to a real number for your project is itemised quotes from reputable contractors. Make sure they cover the same scope so you compare like with like, and read what is included and excluded. The cheapest quote often hides a thinner scope or lower-grade materials that reappear as costly extras later. A clear, detailed quote is worth more than a low headline figure — it tells you what you are actually buying.
New versus resale flats
A brand-new flat is typically cheaper to renovate than an older resale unit, because there is nothing to hack out and rebuild — the work is additive. A resale flat may need old fittings removed, fresh waterproofing, rewiring and repairs before you even start on the look, and older units can hide issues like spalling concrete. We compare the two in detail in BTO versus resale renovation.
Paying for it
Many homeowners spread the cost with a renovation loan rather than paying entirely in cash. These have their own terms and limits, covered in our guide to HDB renovation loans. Whether you borrow or pay cash, the discipline is the same: a clear scope, an itemised budget, and a contingency. Knowing the number before you start is what keeps a renovation from becoming a financial surprise.
Frequently asked questions
What is the biggest cost in a renovation?
For most homes, carpentry and built-in joinery — wardrobes, kitchen cabinets and custom pieces — are the single largest cost, followed by hacking and masonry, flooring and bathrooms.
How much should I budget for contingency?
Allow a sensible buffer over your quoted figure for surprises, material upgrades and small scope changes. Older homes warrant a larger buffer than new ones. Discuss a realistic contingency with your contractor.
All at once, or in phases?
If the budget is tight, you do not always have to do everything at once. Some homeowners tackle the essential and disruptive works first — anything structural, wet areas, wiring — and leave cosmetic upgrades for later. Phasing spreads the cost and lets you live with a space before committing to every detail. The trade-off is that doing things twice can cost more overall, and some works are far cheaper done together while the home is already torn up. Decide which works genuinely must happen now and which can wait, and phase along that line rather than arbitrarily.
Saving without cutting corners
The best savings come from restraint, not from skimping on the things that are hard or unsafe to redo. Keep custom carpentry to what you will really use, choose mid-range finishes in the places that get the most wear, and reuse a sound existing layout rather than hacking everything. What you should not trim is the hidden, critical work — waterproofing, electrical safety, structural advice — because a failure there costs far more than you saved. Spend where it is hard to change later; economise where it is easy.
Related reading
- Construction Cost per Square Foot in Singapore: 2026 Guide
- Electrical Rewiring Cost in Singapore: What to Budget
See also HDB renovation loans and choosing a contractor. More in Renovation.
