Old Condo Reno vs. New Launch: 2026 SG Real Cost Comparison

A resale condo priced $150,000 below the new launch down the road looks like an easy win, until the contractor opens the walls. Undersized wiring, galvanised pipes needing full replacement, and compromised waterproofing in both bathrooms can consume that discount before a single new tile goes down.

Short answer: A full renovation of a pre-2005 resale condo typically runs $100,000 to $150,000 once wiring, plumbing and waterproofing are included, against roughly $26,000 to $73,000 to personalise a new launch. On a like-for-like scenario, the true cost gap between a $1.5 million resale and a $1.7 million new launch narrows to about $130,000, not the $200,000 the sticker prices suggest.

Why do old condos cost more to renovate than buyers expect?

The renovation quote an interior design firm first shows you usually covers only the cosmetic layer: flooring, carpentry, painting and kitchen cabinets. What it often excludes until a contractor opens up the walls is the infrastructure layer underneath. For condos built before 2005, that is where the real cost surprises sit, and resale units can cost roughly 20 to 30% more to renovate than newer builds once hidden works are factored in.

As an illustration of 2025–2026 industry estimates: full electrical rewiring for a unit over 20 years old runs about $5,000 to $12,000, since the original wiring was designed for far fewer appliances than a modern household runs. Full plumbing replacement, including fixtures, runs $5,000 to $15,000 per bathroom, so a 3-bedroom unit with two bathrooms and a kitchen can need $25,000 to $40,000 if galvanised pipes require full replacement. Waterproofing a failed membrane isn't a surface fix either, since tiles must come up and go back down; budget roughly $3,000 to $6,000 per bathroom. Hacking and debris removal, which must be approved by the MCST before work starts, typically adds $8,000 to $15,000 depending on area.

What does a full renovation actually cost, resale versus new launch?

The rule of thumb for a full resale renovation in Singapore is roughly $70 to $120 per square foot. For a typical 1,000 to 1,200 sq ft, 3-bedroom resale condo built before 2005, a realistic budget looks like this, based on 2025–2026 renovation industry estimates:

Scope	Budget range
Hacking and debris removal	$8,000–$15,000
Electrical rewiring (full unit)	$5,000–$12,000
Plumbing (2 bathrooms + kitchen)	$15,000–$35,000
Waterproofing (2 bathrooms)	$6,000–$12,000
Flooring (full unit)	$8,000–$18,000
Kitchen (cabinets, countertop, appliances)	$15,000–$30,000
Bathrooms (2, full rebuild)	$16,000–$30,000
Carpentry (wardrobes, storage, TV console)	$15,000–$30,000
Painting, false ceilings, lighting	$7,000–$16,000
Contingency (10–15%)	$10,000–$20,000
Total	$105,000–$218,000

By comparison, a new launch condo arrives with new wiring, new plumbing and finished waterproofing, so most buyers only need light personalisation: a feature wall, loose furniture, window treatments and perhaps smart-home additions, typically $26,000 to $73,000 in total. Even a full custom strip-out of developer finishes for a luxury result usually runs $60,000 to $100,000, which is still well below the resale infrastructure-inclusive range.

Putting purchase price, Buyer's Stamp Duty and renovation together for an illustrative $1.5 million resale condo (built 2000, roughly 74 years of lease left) against a $1.7 million new launch in the same district with a fresh 99-year lease:

	Resale condo (built 2000)	New launch
Purchase price	$1,500,000	$1,700,000
BSD	$44,600	$54,600
Renovation to liveable standard	$120,000	$40,000
Total committed spend	$1,664,600	$1,794,600
Move-in timeline	8–12 weeks post-purchase	3–4 years post-purchase

The true cost gap here is about $130,000, not the $200,000 the sticker prices imply, and the resale unit also commits you to a shorter remaining lease, which matters for CPF usage and your eventual buyer pool on exit. For more on that lease effect, see how lease decay erodes your property value, and for the fuller cash-flow timing comparison, see new launch vs resale condo in Singapore.

When does each option actually make sense?

Renovating a resale condo tends to make sense when the location has no new-launch equivalent (mature estates like Buona Vista, Novena, Toa Payoh or Bishan), when you need to move within three to four months rather than wait years for TOP, when you can negotiate the purchase price down by $150,000–$200,000 against recent comparables to absorb the renovation cost, or when an older, larger layout matters more to you than newness.

Buying new tends to make more sense when you plan to hold 15–20 years and want a fresh 99-year lease clock at exit, when your renovation budget is genuinely limited, when you want a warrantied, quality-controlled product with no contractor management or MCST permit negotiation, or when the price gap to a comparable resale unit is already under $100,000, since the renovation maths then typically favours new.

What should you check before committing to a resale renovation?

A professional pre-purchase inspection, typically $500 to $1,200, can flag structural cracks and water seepage and may prevent $20,000 to $50,000 in renovation overruns; it is often the best money spent in the entire transaction. Check the electrical distribution board, since a single-phase, 40-amp board built for a 1990s household will likely need upgrading for EVs, induction hobs and multi-zone air-conditioning. Inspect wet-area waterproofing directly, and ask the seller about any inter-floor leak history (see inter-floor leakage in Singapore: your legal rights). Review the MCST's sinking fund and the last three years of AGM minutes, since a thin sinking fund raises the risk of a special levy after you buy. Finally, get itemised quotes from at least three contractors rather than a lump-sum package, since that is where real cost variance between firms shows up.

Every renovation also needs MCST approval before work starts, for hacking, electrical and plumbing changes, air-conditioning installation and anything affecting the facade, typically against a refundable deposit of $500 to $2,000, with work hours usually restricted to weekdays. If your building used PPVC or APCS construction, common in projects completed after 2015, a Professional Engineer's structural assessment may be required well beyond a single load-bearing wall, and can run from $500 up to $5,000 depending on scope; see PPVC vs APCS: the honest guide to renovation costs before finalising your budget.

The bottom line

Renovating an old condo and buying a new launch are not as far apart financially as the sticker prices suggest once you account for bringing an older unit up to a liveable standard. In the illustration above, a $200,000 sticker gap narrows to about $130,000 once renovation and stamp duty are counted. Whether that gap is worth a shorter lease, renovation stress and a delayed move-in depends entirely on your timeline and priorities. Where the decision involves financing or CPF usage, speak to a licensed financial adviser for advice specific to your situation. Model the total cost of both routes before you fall in love with either listing.

Questions readers ask

How much does it really cost to renovate an old condo in Singapore?

For a pre-2005, 1,000–1,200 sq ft, 3-bedroom resale condo, a full renovation including infrastructure work typically costs $100,000 to $150,000, based on 2025–2026 industry estimates. Costs rise toward $218,000 at the upper end once hacking, rewiring, plumbing and waterproofing are all needed.

Is it cheaper overall to buy a new launch instead of renovating resale?

Not always. In an illustrative scenario, a $1.5 million resale plus renovation totalled about $1,664,600 against $1,794,600 for a $1.7 million new launch, a roughly $130,000 gap rather than the $200,000 the sticker prices suggest. The better choice depends on your timeline and lease priorities.

What hidden costs catch resale condo buyers off guard?

Electrical rewiring, full plumbing replacement and waterproofing are the most commonly missed items, since they sit behind walls and only surface once a contractor begins work. A pre-purchase inspection costing $500 to $1,200 can flag most of these issues before you commit to a purchase.

Do I need MCST approval to renovate my condo?

Yes. Hacking, electrical and plumbing changes, air-conditioning installation and facade-related works all need MCST approval before work starts, usually against a refundable deposit of $500 to $2,000. Buildings using PPVC or APCS construction may also need a Professional Engineer's assessment.

Is an older, larger resale layout better value than a smaller new launch unit?

It can be, for buyers who prioritise space over newness. As an illustration, a 1,400 sq ft three-bedroom unit from the late 1990s in a good location may offer meaningfully more liveable space than a 1,000 sq ft new-launch three-bedroom at a similar price, though it comes with a shorter remaining lease and renovation needs.

Sources

Building Maintenance and Strata Management Act (MCST renovation guidelines); IRAS (Buyer's Stamp Duty rates); other figures reflect 2025–2026 Singapore renovation industry estimates and are presented as such.

This article is for informational and educational purposes only. It does not constitute financial, investment, or legal advice. Property investments involve risk. Past performance is not indicative of future results. Readers should seek independent advice from licensed professionals before making any property or financial decision. James Ong is a licensed real estate salesperson (CEA Reg No. R008385F) with PropNex Realty Pte Ltd and is not a licensed financial adviser.

James Ong | CEA Reg No. R008385F | PropNex Realty Pte Ltd