New Launch Condo Floor Area 2026: Why Efficiency Ratios Fell From 99% to ~95%

GFA harmonisation did not make new condos more expensive overnight. It changed what counts as saleable space, so post-2023 units look smaller and pricier per square foot even when the total cost and usable space are broadly comparable to older projects.

If you have toured a new launch condo in 2026 and felt that a three-bedder seemed strangely compact next to a similar-priced resale unit, you are not imagining it. A 2023 rule change called GFA harmonisation has quietly reshaped how Singapore measures, prices and markets homes. For anyone comparing a glossy new launch against an older resale condo, understanding the shift is now essential to reading real value rather than headline numbers.

What Changed in How New Launch Floor Area Is Measured

Before mid-2023, Singapore's agencies each measured floor area their own way, which created grey zones. URA, the Singapore Land Authority, BCA and SCDF applied four different conventions, and the mismatch between them let developers list floor areas that included space buyers could not really live in.

URA's harmonisation circular, first issued on 1 September 2022, unified these definitions. Under the harmonised framework, all agencies' floor areas are measured to the middle of the wall, all strata areas are included as GFA, and all voids are excluded from strata area. In plain terms, the aircon ledges, planter boxes and double-volume voids that once inflated a unit's listed size are now either treated as common property or excluded from what you pay for.

One nuance matters for aircon ledges specifically. Ledges for equipment exclusive to a strata unit that are kept as strata area now count as GFA, which gives developers a financial reason to designate them as common property instead and stop charging buyers for them. Either way, the buyer wins on transparency.

Why Efficiency Ratios Fell From 99% to Around 95%

The most concrete effect shows up in the efficiency ratio, meaning the share of a unit's saleable area that is genuinely usable interior space. Industry observers note that aircon ledges historically accounted for roughly 4% to 5% of a unit's saleable area, and developer efficiency ratios that once hovered near 99% to 100% were expected to settle around 95% after the new rules took effect.

That sounds like a downgrade, but it is really a relabelling. The liveable floor you can furnish has not shrunk. What has changed is that developers can no longer count the voids and ledges toward the size on the price list, so the listed area now maps more closely to reality.

Here is a simplified worked example on a hypothetical three-bedroom unit to show why the same home can look different on paper depending on the measurement convention.

The headline psf rises from $2,100 to $2,211 even though the quantum and the usable space are identical. This is the trap. A buyer who screens only on psf would wrongly conclude the harmonised unit is worse value. This is exactly why our team argues that a single headline number cannot tell you what to do, and why walking the floor plan matters more than ever.

The Scope Rule Most Buyers Get Wrong

Here is the trap that catches even experienced buyers: launch date does not determine harmonisation status. The harmonised definitions apply only to development applications submitted to URA on or after 1 June 2023, plus GLS sites tendered from 1 September 2022. Existing properties keep their original strata definitions.

That means the projects still measured the old way are the ones whose applications predate the cut-off, typically en bloc redevelopments approved before June 2023. By 2026 those are the minority. The first private residential project to launch under the harmonised rules was Lentor Mansion in 2024, and most launches since have followed it. Launch date alone still does not confirm the convention, so an older en bloc redevelopment selling today can be quoting floor areas the pre-2023 way. Where the gap really shows is against resale, since every project launched before June 2023 keeps its original measurement.

So before you compare two projects on size or psf, confirm which convention each one uses. Among current launches, ELTA at Clementi Avenue 1 in District 5 is an example of a project marketed under the harmonised floor-area rules, which is worth knowing when you benchmark its layouts against an older neighbour. When in doubt, ask the developer directly which measurement basis the floor plan uses, and never assume two brochures are describing the same thing.

How to Compare a New Launch Against Older Resale

The practical fix is to stop comparing headline psf across measurement systems and instead compare effective psf and total quantum. An older resale condo launched before June 2023 keeps its original measurements, which can mean a larger listed floor plan but lower true space efficiency, because voids and ledges pad the number.

A sensible process at a showflat looks like this. First, note the listed saleable area and total quantum. Second, ask what the interior efficiency of that specific stack is. Third, mentally strip out balcony and any void from both the new launch and the resale comparison so you are measuring like for like. Fourth, divide quantum by the usable interior area to get an effective psf you can actually compare.

If you are still deciding between the two paths entirely, our 18-month scorecard on choosing resale over a new launch works through the trade-offs with real numbers, and it pairs well with running your budget through the PropertyNet affordability calculator before you shortlist anything. Buyers weighing the full launch process should also review our step-by-step guide to buying a new launch condo.

Opportunities and Risks for 2026 Buyers

On the opportunity side, harmonisation is genuinely pro-buyer. You now pay for space you can furnish rather than empty vertical air. Newer harmonised layouts also tend to be designed more tightly, since developers can no longer bury inefficiency inside voids that count as saleable. For long-term resale, an efficient, honestly measured unit is easier to explain to the next buyer.

On the risk side, the measurement transition creates comparison confusion that agents on either side can exploit. A pre-harmonisation resale unit can be made to look like better value on psf, while a harmonised new launch can be made to look cramped. Neither framing is complete. There is also a valuation and financing angle: because loan quantum depends on valuation, not on the marketing brochure, always sanity-check size claims against the actual strata plan. If you are stretching your budget, revisit the TDSR and LTV rules that cap how much you can borrow before you commit.

Reading floor area correctly is now one of the highest-value skills a Singapore buyer can have, because a single misunderstood psf figure can lead you to overpay or dismiss a genuinely efficient home. If you are weighing a new launch against a resale unit and want an independent view on effective psf, layout efficiency and financing headroom for your specific shortlist, reach out to the team at PropertyNet.SG. We will walk through the numbers with you, measurement convention and all, so you can decide with clarity rather than marketing spin.