Home Renovation Costs in Singapore 2026: A Realistic Budget Guide for BTO, Resale HDB and Condo Owners

Renovation costs remain one of the biggest financial surprises for Singapore homeowners.

A recent Reddit discussion estimated that a 4-room BTO renovation in 2026 could cost anywhere from about S$40,000 to S$75,000, while resale HDB renovations could climb much higher once hacking, rewiring, plumbing and other hidden issues are involved.

The discussion reflects a real concern, but the latest market data suggests homeowners should be careful with broad online estimates.

According to Qanvast’s 2026 renovation projections, based on hundreds of completed renovation projects and expected inflation, a typical 4-room BTO renovation is estimated at around S$50,000 to S$60,000, while a 4-room resale HDB renovation is closer to S$70,000 to S$81,600. 

The most important lesson is not finding one magic renovation number.

It is understanding why two homes of the same size can differ by tens of thousands of dollars.

Latest Singapore Renovation Cost Estimates for 2026

Based on Qanvast’s current 2026 projections, homeowners can use the following as a starting benchmark.

These are not guaranteed quotations. They are broad market benchmarks based on recent renovation data and projected price movements. (Qanvast)

The actual amount can easily move above or below these ranges depending on scope.

Why a 4-Room BTO Can Cost S$50,000—or S$90,000

Two homeowners can own identical 4-room flats and spend completely different amounts.

One may keep the original flooring, use simple carpentry and buy most furniture loose.

Another may install:

• Full-height kitchen cabinetry

• Built-in wardrobes

• TV feature wall

• False ceilings

• Custom study

• Display cabinets

• New flooring

• Extensive electrical work

• Premium bathroom finishes

The second renovation can easily cost tens of thousands more.

Qanvast identifies carpentry, masonry, hacking and other major construction works as some of the largest renovation cost drivers.

This is why renovation should be budgeted by scope, not simply flat type.

BTO vs Resale: Why Resale Renovation Usually Costs More

Resale flats typically cost more to renovate because homeowners are not working with a blank canvas.

They may first need to remove what is already there.

Typical resale costs can include:

• Hacking existing tiles

• Removing old carpentry

• Replacing wiring

• Replacing plumbing

• Waterproofing

• Bathroom reconstruction

• Floor levelling

• Repairing ageing surfaces

• Replacing old air-conditioning piping

Qanvast estimates a typical 4-room resale renovation at around S$70,000 to S$81,600 in 2026, compared with S$50,000 to S$60,000 for a comparable BTO.

That difference is why buying a resale flat at a lower property price does not automatically mean the total move-in cost will be lower.

Older Resale Flats Carry More Uncertainty

One Reddit commenter in the uploaded discussion described resale renovation as a “box of chocolates”.

That is a useful analogy.

Problems may only become visible after hacking begins.

For example:

• Corroded pipes

• Old wiring

• Water damage

• Damaged screed

• Uneven walls

• Previous unauthorised alterations

• Waterproofing failures

These issues are difficult to price accurately before opening up the home.

For older resale properties, a larger contingency reserve is therefore sensible.

How Much Contingency Should You Keep?

A practical baseline is to reserve around 10% to 15% of the renovation contract value for unexpected expenses.

For older resale flats, some homeowners may prefer 15% to 20% or more, especially if extensive hacking is planned.

So if your planned renovation is S$75,000:

S$75,000 renovation + 15% contingency = S$86,250 realistic working budget.

This does not mean you should deliberately spend the contingency.

It should remain available for genuine surprises.

Variation Orders Are a Major Budget Risk

Another Reddit commenter correctly highlighted variation orders, commonly called VOs.

A variation order occurs when the agreed project scope changes after work begins.

Examples include:

• Adding another cabinet

• Changing tile selections

• Adding electrical points

• Upgrading materials

• Moving plumbing

• Increasing carpentry

• Changing lighting plans

A S$70,000 contract can gradually become S$80,000 or S$90,000 through multiple “small” additions.

Before approving a variation, ask for the cost in writing.

Do not rely on:

“This one only adds a little.”

Small changes accumulate.

What Is Usually Not Included in a Renovation Quote?

This is where homeowners often underestimate their real move-in budget.

A renovation quotation may not include everything required to live comfortably in the home.

Separate spending can include:

• Sofa

• Mattress

• Bed frame

• Dining table and chairs

• Refrigerator

• Washing machine

• Television

• Curtains

• Fans

• Air-conditioning

• Smart-home devices

• Decorative lighting

• Movers

That means a S$60,000 renovation does not necessarily mean the home costs S$60,000 to complete.

A better total budget is:

Renovation + appliances + furniture + contingency + moving costs.

Furniture Deserves Its Own Budget

This is particularly important.

Homeowners sometimes spend most of their available funds on carpentry and finishes, then compromise on:

• Mattress

• Sofa

• Dining chairs

even though those are the pieces they physically use every day.

For many households, allocating less money to decorative carpentry and more toward durable loose furniture can provide better long-term value.

New Condo Renovation Costs in 2026

New condos are usually cheaper to renovate than resale condos because developers typically already provide:

• Flooring

• Kitchen cabinets

• Bathrooms

• Wardrobes

• Sanitary fittings

Qanvast currently estimates new-condo renovation at approximately S$44,290 to S$62,160 in 2026. 

However, this can rise substantially if homeowners decide to remove developer finishes and redesign the unit extensively.

For example, replacing perfectly usable wardrobes, floors and kitchens simply for aesthetic reasons can quickly erase the cost advantage of buying a new condo.

Resale Condo Renovations Can Exceed S$100,000

For resale condos, Qanvast estimates around S$78,280 to S$105,000 for 2026.

Older private apartments often require extensive work involving:

• Bathrooms

• Electrical systems

• Plumbing

• Flooring

• Kitchens

• Carpentry

Larger floor areas also naturally increase material and labour requirements.

That means a spacious older condo that looks affordable at purchase can still require a substantial renovation reserve.

HDB Renovation Permits: Don't Start Work Without Checking

Cost is only one part of renovation planning.

Some HDB works require prior approval.

HDB states that homeowners should use contractors listed in its Directory of Renovation Contractors, and certain works require a renovation permit before construction begins. (Housing & Development Board)

Examples can include specific wall alterations and other building works.

For electrical work, homeowners must engage an EMA-licensed electrical worker, while air-conditioning installation must use an appropriately trained installer. (Housing & Development Board)

Ignoring these requirements can become expensive.

HDB states that unauthorised renovation may require homeowners to reinstate the flat to its original condition. (Housing & Development Board)

Hacking a Wall Is Not Just an Interior Design Decision

Before approving any open-concept layout, determine whether the wall can legally and structurally be altered.

HDB requires evaluation for certain works such as wall demolition, with the renovation contractor submitting the relevant floor plan and proposed work for approval. (Housing & Development Board)

This is important because “open kitchen” inspiration online may not be technically possible in every flat.

New Rooms Also Need Light, Ventilation and Safe Escape Routes

HDB's current renovation guidelines state that where partitions create a room intended for habitation, adequate natural lighting and ventilation must be provided.

The fire escape path should also lead directly toward the main exit rather than passing through another room. (Housing & Development Board)

So adding another bedroom is not simply a matter of erecting a partition.

Condo Renovations Need Their Own Approval Checks

Condo owners face a different approval environment.

MCST rules can govern matters such as:

• Renovation hours

• Contractor access

• Deposits

• Lift protection

• Hacking periods

• Common-property protection

Certain private-property building or structural works may also require BCA approval or consultation with a Qualified Person. BCA notes that private-property owners undertaking renovation or building works may need plans submitted for approval depending on the scope.

So an interior designer who understands HDB procedures may not automatically have the same experience navigating a specific condominium's MCST requirements.

This is why homeowners should ask:

“Have you completed renovations in this condo—or dealt with similar MCST approval requirements before?”

How Long Does Renovation Take in Singapore in 2026?

Qanvast estimates approximately:

These are general estimates assuming ordinary project conditions.

Complex custom carpentry, imported finishes and major hacking can extend the timeline.

So can renovation permit delays or material shortages.

Don't Renovate Before Completing Your BTO Defect Inspection

One of the warnings in the Reddit discussion is especially important for new BTO homeowners.

Inspect the flat before renovation starts.

Once contractors:

• Tile over surfaces

• Install cabinets

• Drill walls

• Add flooring

it can become much harder to identify whether a defect existed beforehand or was created during renovation.

Complete your inspection first and document issues clearly.

Only then begin major renovation.

Interior Designer vs Contractor: Which Is Cheaper?

Homeowners commonly assume:

Contractor = cheap
Interior designer = expensive

Reality is more nuanced.

Interior Designer

May provide:

• Space planning

• Concept development

• Material selection

• Drawings

• Project coordination

• Contractor management

Main Contractor

May be suitable if you already know exactly what you want and are comfortable coordinating design decisions yourself.

A contractor can potentially reduce professional-design costs.

But poorly coordinated work can also produce expensive mistakes.

The correct choice depends on your ability, time and renovation complexity.

Don't Choose the Cheapest Quotation

Three quotations might look like this:

Company A: S$52,000
Company B: S$61,000
Company C: S$68,000

It is tempting to choose A immediately.

But quotations may not contain identical scope.

One may exclude:

• Electrical work

• Painting

• Haulage

• Plumbing

• Glass

• Doors

• Fixtures

A cheaper quote can become more expensive after variation orders.

Compare line by line, not total against total.

Questions to Ask Before Signing a Renovation Contract

Ask your ID or contractor:

1. What exactly is excluded from this quotation?

2. Which works require HDB, BCA or MCST approval?

3. Who handles permit applications?

4. What happens if hidden problems are discovered?

5. How are variation orders priced?

6. Is electrical work included?

7. Is plumbing included?

8. Are disposal and haulage included?

9. What is the payment schedule?

10. What is the expected completion date?

Get important answers in writing.

Where Can Homeowners Save Money?

Not every renovation item deserves equal spending.

Keep Existing Flooring if It Is Good

For resale condos, designers interviewed by Qanvast specifically noted that existing marble or parquet can sometimes be polished or varnished instead of hacked out completely. (Qanvast)

That can save:

• Hacking

• Disposal

• New material

• Labour

Reduce Decorative Carpentry

Instead of building:

• Full-height TV wall

• Giant display cabinet

• Fixed bench

• Decorative feature wall

consider loose furniture.

A high-quality sideboard or TV console can move with you.

Carpentry cannot.

Keep Wet Areas in Similar Positions

Moving plumbing significantly can increase cost.

Where possible, retaining existing kitchen and bathroom arrangements reduces complexity.

Use Premium Materials Selectively

You do not need the most expensive finish everywhere.

Prioritise surfaces that receive heavy use:

• Kitchen worktop

• Sofa

• Mattress

• Dining chairs

• Hardware

Decorative surfaces can often use more economical alternatives.

Where Should You Avoid Cutting Corners?

Some parts of a renovation deserve more attention.

These include:

• Waterproofing

• Electrical systems

• Plumbing

• Structural compliance

• Quality hinges and drawer systems

• Installation workmanship

A cheap decorative panel is relatively easy to replace.

A failed bathroom waterproofing system is not.

Furniture Can Reduce Renovation Costs

This is one of the most useful strategies for new homeowners.

Instead of building a permanent solution for every need, use furniture.

For example:

Built-in TV cabinet → freestanding media console

Permanent dining bench → movable dining chairs

Fixed study → freestanding desk

Full-wall storage → modular shelving + sideboard

This can reduce renovation cost while preserving flexibility.

It is particularly useful for first-time homeowners whose household needs may change.

Don't Design Only for Instagram

The Reddit comments also contain an important point: design trends change.

The renovation that looks fashionable in 2026 may feel dated several years later.

Examples include highly specific:

• Feature walls

• Fluted panels

• Dramatic curves

• Niche lighting

• Colour-heavy cabinetry

Trends are not inherently bad.

But expensive permanent elements should ideally solve a functional problem too.

A good rule is:

Use renovation for infrastructure. Use furniture and styling for personality.

Furniture can be replaced.

Walls and built-ins are expensive to undo.

Does Renovation Increase Property Value?

Sometimes—but not dollar for dollar.

Spending S$100,000 on renovation does not necessarily add S$100,000 to your resale price.

Future buyers may dislike:

• Your colour palette

• Your layout

• Your carpentry

• Your open kitchen

• Your built-in furniture

Functional upgrades can help a home sell better.

But highly personalised renovation should primarily be done because you want to live in it, not because you expect full financial recovery later.

A Practical 2026 Renovation Budget Example

Suppose you have a typical 4-room BTO.

A realistic planning framework might be:

Renovation: S$55,000
Contingency at 15%: S$8,250
Furniture: S$10,000–S$20,000
Appliances: S$8,000–S$15,000
Curtains, accessories and moving: S$3,000–S$6,000

Your actual all-in move-in budget could therefore approach:

S$84,000 to S$104,000

even though the renovation contract itself was only S$55,000.

That is why homeowners should not confuse renovation budget with home completion budget.

Final Thoughts

Singapore renovation costs in 2026 are not rising uniformly, and BTO costs appear to have stabilised compared with the sharp increases seen earlier in the decade.

But homeowners still need substantial budgets.

The latest Qanvast estimates put a typical:

• 4-room BTO at S$50,000–S$60,000

• 4-room resale at S$70,000–S$81,600

• 5-room resale at S$80,800–S$98,900

• new condo at S$44,290–S$62,160

• resale condo at S$78,280–S$105,000 

The Reddit figures you shared therefore capture the broader reality—that renovation can become expensive quickly—but should not be treated as fixed market rates.

The smarter approach is:

Define the scope. Compare detailed quotations. Keep a contingency. Verify permits. Preserve money for furniture and appliances.

And most importantly:

Do not spend every available dollar trying to finish the entire home on day one.

A good home can be built gradually.

An overcommitted renovation budget is much harder to undo.