The new-build premium: what you pay, and what the resale data says happens next
A new home costs more per square metre than the second-hand one next door. Some of that premium buys real things: a warranty, current building regulations, no chain, an EPC rating that halves the heating bill. Some of it buys the show-home smell, and the show-home smell does not survive to resale. The sold-price record lets you see the premium district by district, and it is larger than most buyers assume.
What the premium looks like in the data
Measured as the gap between the median new-build £/m² and the median resale £/m² in the same district over the same 12 months to June 2026: SW11, Battersea shows a premium of 67%, driven by the riverside towers pricing against Victorian stock; E16, Canning Town shows 46%; M4, central Manchester 42%; and E14, the Isle of Dogs, where new stock has been the norm for two decades, a comparatively restrained 36%. Districts with too few new-build sales to publish a premium simply do not show one; a number computed from four sales would be noise.
Why the headline figures exclude new-builds
Every headline median on this site is computed over resales, with new-builds counted, listed, and shown as their own figure. This is deliberate. Blending a 40–60% premium into a district median at whatever rate developers happened to complete this year would make the district look dearer for everyone, including the buyer of a 1930s semi to whom the premium simply does not apply. The new-build line on each district page tells you the premium exists and its size; the headline tells you what the standing stock trades at.
The part that fades
The premium has two components, and they age differently. The durable part, better insulation, newer wiring, a warranty tail, compliance with current regulations, keeps some value. The first-owner part, the developer’s marketing, incentives priced in rather than discounted, the pure newness, exists only once. At first resale the home competes as the second-hand stock it now is, against homes whose owners did not pay the premium. The practical consequence: a new-build bought at a 45% premium in a district growing at 2% a year in cash terms can take years of ordinary growth just to resell flat. That is not an argument against buying new. It is an argument against paying for newness twice, once in the premium and once in the expectation of resale growth.
Three checks before reserving off-plan
First, compute the development’s £/m² from the price list and the plans, and put it against the district’s resale median, that gap is the premium you are actually being quoted, whatever the brochure says. Second, check the district’s ten-year trend in real terms on its page: a big premium in a flat market is a long payback. Third, compare against the district’s new-build figure where one is published: paying above even the new-build median needs a named reason, a better floor, a river view, not just a glossier brochure.
The seller’s side of the same number
If you are selling a home built in the last decade, the premium works against you exactly once: your buyer is comparing you against resales, because that is what you now are. Pricing off what you paid, premium included, is how recent new-builds sit unsold. Pricing off the district’s current resale £/m², then arguing for the durable part of the premium (the EPC rating, the warranty years left), is how they move.
The new-build figure, where published, sits on each district’s page alongside the tenure split, which matters here too, since most new stock is leasehold. Figures: HM Land Registry sold prices matched to EPC floor areas, 12 months to June 2026, method documented in full.
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