HDB Renovation Cost Breakdown 2026: Full Budget Guide by Room

Wei Jing got her first renovation quote for a 4-room resale HDB in Bishan. $48,000. Seemed reasonable. She signed.

Fourteen months later, the final bill was $73,500. The original quote had excluded demolition, bathroom waterproofing and disposal fees. An HDB-required structural wall assessment too. Every item sat on its own page. Smaller text. Easy to miss.

She wasn’t cheated. The items were in the documents. Yet she hadn’t known which questions to ask.

That’s the gap most Singapore homeowners fall into with renovation budgets. The room rates look manageable. The full picture only appears later, along with the surprise line items.

This guide breaks down what renovation cost in Singapore actually looks like by room and by flat type. It also covers the factors that move a budget from estimate to final bill.

The Living Room: Where $8,000 and $25,000 Both Make Sense

The living room range is wide. An $8,000 living room and a $25,000 living room can sit in the same flat type. The difference is not quality, exactly. It’s scope.

Flooring replacement and fresh paint, along with a feature wall and basic lighting: that’s the $8,000-12,000 scope. No carpentry. Ceiling works absent too. The bones of the room change. The architecture doesn’t.

Step up to $15,000-20,000 and custom carpentry enters: a built-in TV console, a feature wall with shelving, concealed lighting, a false ceiling. This is where the room starts to feel designed rather than furnished.

Full carpentry and premium materials. Concealed aircon trunking. Motorised curtains: that’s the $20,000-25,000 tier. The room looks like an interior design project. Because it is.

The ceiling works alone can run $3,000-8,000 for a living room, depending on complexity. That’s a line item that surprises many first-time renovators. It’s not optional if you want concealed trunking or cove lighting.

For what drives costs in the living area, read about carpentry in Singapore. The pricing structure between basic modular and full custom is where the gap lives.

Kitchen Costs Are Not What Most Homeowners Expect

The kitchen is almost always the highest single-room cost in a HDB renovation. And it’s the room where quotes diverge most dramatically between contractors.

A basic kitchen at $15,000-20,000 covers demolition, new cabinets and countertops. New appliances and basic tiling too. Functional. Nothing remarkable. That’s a functional kitchen. Nothing remarkable.

The $20,000-28,000 range adds better cabinet materials and stone countertops. Built-in oven space enters here too. The layout gets more considered. The extra cost is mostly in materials and carpentry quality. The extra cost is mostly in materials and carpentry quality.

Premium laminates or painted cabinets and a full island: that’s the $28,000-35,000 tier. Appliance upgrades too. Custom storage inserts add here too. High-end faucets and sink materials also contribute here.

What most homeowners miss: wet works. Hacking the old tiles, waterproofing the walls and floor, and relaying new tiles is often quoted separately from the carpentry. Wet works alone can add $4,000-8,000 to a kitchen budget.

See HDB kitchen renovation for what’s included at each tier. The difference between a contractor-supplied kitchen and an ID-designed one is in the spec sheets. The spec sheets are where the detail lives.

Bathrooms: Where Cost Per sqm Hits Hardest

Per square metre, bathrooms cost more than any other room. A 4sqm bathroom at $12,000 is $3,000 per sqm. That’s not unusual.

The $6,000-8,000 scope covers demolition, waterproofing, new tiles, a replacement toilet bowl, new basin, basic fittings. Bare minimum. Clean. Functional. Clean. No design ambition.

Step to $9,000-12,000 and a frameless glass screen arrives, along with a rain shower head and better fittings throughout. Concealed plumbing changes the whole look of the shower area. The shower area feels intentional rather than utilitarian.

At $13,000-15,000, full concealed plumbing and feature tiles. A custom vanity plus built-in niche shelving. Quality fittings throughout. This is the level that photographs well. Worth the spend if you plan to sell.

Most homeowners renovating two bathrooms budget $15,000-25,000 total. The master bathroom typically gets more budget, whereas the common bathroom gets a clean, practical finish at a lower spend.

A bathroom renovation budget checklist will help you identify which line items your quote is including and which it isn’t. Waterproofing warranty is the one most often under-specified in cheaper quotes.

Bedroom Costs: The Most Misunderstood Line in Any Renovation Quote

Bedrooms are often the most underestimated room in a renovation scope. Homeowners assume the bedroom is simple. It isn’t.

A basic bedroom at $5,000-7,000 covers: flooring, painting, a simple built-in wardrobe, and lighting. No false ceiling. Feature wall absent. Custom carpentry stays at wardrobe-only.

The $8,000-10,000 range adds a feature wall (timber panels, fluted panels, or a painted accent) and concealed ceiling lighting. The wardrobe gets custom internal fittings too. The room reads as designed, not just painted.

Full custom carpentry at $10,000-12,000 per bedroom: bed frame and wardrobe, study desk, integrated shelving. The room becomes a fitted suite rather than a furnished box.

The wardrobe is where bedroom costs cluster. A basic 1.8m sliding door wardrobe runs $1,800-3,000. A full-height custom wardrobe spanning 3m or more in width runs $4,000-8,000 depending on internal fitting complexity.

For a 4-room flat with three bedrooms, the total bedroom cost across all three rooms typically runs $20,000-35,000. The master bedroom usually takes the largest share, whereas common bedrooms are kept more functional.

Read about wardrobe design in Singapore for what goes into pricing custom wardrobes. Carcase material has its own cost driver. Door type does too. Internal fittings add another layer.

What Actually Pushes a Renovation Budget Over Estimate

Most renovation overruns don’t happen because the contractor is dishonest. They happen because the original quote was for a narrower scope than the homeowner imagined.

Hacking and disposal are the most common surprise. Yet most homeowners don’t see it coming. Removing old tiles and old carpentry generates significant waste. Old fixtures add to it. Disposal fees in Singapore are not cheap. Budget $1,500-4,000 for hacking and disposal alone in a full-flat renovation.

Electrical works are the second most common surprise. An older resale HDB may need a full consumer unit upgrade and upgraded wiring. Additional power points too, to handle modern appliances. That scope can add $3,000-8,000 to any renovation budget.

HDB permit fees are small (typically $200-500), though the works the permit requires can be significant. Structural wall assessments and waterproofing certification both add cost. PE letters too. See HDB renovation permit requirements for the full list of what triggers a permit and what it means for your timeline.

Variation orders during works are the third trap. Once hacking starts, unexpected conditions appear: rotted backing, shifted pipe positions, old cement screeds needing removal. Each variation is priced separately. A contingency of 10-15% of the total budget is not excessive. It’s standard practice.

For resale HDB flats in particular, the HDB resale renovation scope tends to run higher than BTO projects. The existing conditions are unknown until work starts.

Total Renovation Budgets by Flat Type in 2026

These figures reflect full-flat renovation scopes in Singapore as of 2026. Basic means functional finishes, standard carpentry, no premium materials. Mid-range means custom carpentry, good quality finishes, full bathroom and kitchen works. Premium means bespoke design, premium materials throughout, high-specification fittings.

3-room HDB flat: Basic $28,000-38,000. Mid-range $40,000-58,000. Premium $60,000-85,000.

4-room HDB flat: Basic $38,000-52,000. Mid-range $55,000-80,000. Premium $80,000-120,000.

5-room HDB flat: Basic $48,000-65,000. Mid-range $70,000-100,000. Premium $100,000-150,000.

These ranges assume a full-flat renovation including living room, kitchen, and all bathrooms. Bedrooms included. Partial renovations cost less, though the per-room rate is sometimes higher when only one or two rooms are being done.

For financing options, the HDB renovation loan scheme allows up to $30,000 for existing flat owners. Banks offer renovation loans up to $30,000 or 6 times monthly income, whichever is lower. A renovation loan in Singapore is typically unsecured and carries a higher interest rate than a home loan. Worth calculating the total cost of borrowing before committing.

Contractors and IDs use different pricing structures. Understanding this helps you compare quotes accurately. HDB renovation contractors price by trade and materials. Knowing the difference helps you compare quotes accurately rather than assuming the lowest number represents the best deal.

Frequently Asked Questions

What is a realistic renovation budget for a 4-room HDB in Singapore in 2026?

A realistic mid-range budget for a 4-room HDB full-flat renovation in 2026 is $55,000-80,000. Basic works without much custom carpentry can come in at $38,000-52,000. Premium finishes with full custom design push above $80,000. The main cost drivers are carpentry extent and kitchen scope. Bathroom finish level matters too.

Why is my renovation quote so much lower than others I’ve seen?

That’s the question worth asking. A substantially lower quote usually means items are excluded. Hacking, disposal and electrical works are commonly left out of headline quotes. Wet area waterproofing too. Ask the contractor to list explicitly what is and isn’t included before signing anything.

Does the kitchen always cost the most in a HDB renovation?

Almost always, yes. The kitchen combines wet works and extensive carpentry. Appliance costs and specialised installation add on top of that. It’s the most trade-intensive room in the flat. Most savings come from adjusting kitchen material choices. Cutting from other rooms rarely moves the number as much.

Can I renovate just one room to save money?

Yes. Partial renovations are common, though the per-room cost is sometimes higher than it would be as part of a full-flat scope. Contractors price mobilisation costs into each job. If you’re only doing the kitchen, you carry the full mobilisation overhead for that one room. Grouping rooms together, even on a phased timeline, often reduces the total outlay.

What is the average cost to renovate an HDB toilet in Singapore?

A single HDB bathroom renovation runs $6,000-15,000 depending on finish level. Basic functional: $6,000-8,000. Mid-range with glass screen and quality fittings: $9,000-12,000. Premium with concealed plumbing and feature tiles: $13,000-15,000. Two bathrooms together often attract a small discount versus two separate jobs.

Renovation budgets have a way of expanding once work starts. The homeowners who manage them best are the ones who understand the scope before signing, not after. A clear, itemised quote from the start is the single most important thing you can do before any work begins.