Tool · New-build premium

What a new home asks. Against similar resales.

How far a new home’s asking price sits above what similar homes nearby have sold for, with how sure the estimate is, or why there is no figure.

Illustration, not advice No lender or product named Dated official figures, with their sources

The home

Resale homes of the same type, with a bedroom count within one and a floor area close to this home’s, sold near it: HM Land Registry sales with their energy certificate’s floor area, never new-build sales.
Each sale moved to today’s prices with HomePortfolio’s repeat-sales index, built from homes HM Land Registry records selling more than once.
The middle half of those prices, per square metre where the floor area is known, is the band a similar resale home would sell in.
The asking price against that band is the premium, and after the builder’s cash offers too, with a confidence set by how many sales match, how alike and how recent.
Each month the method values thousands of resales whose price is already known, and the limits each confidence keeps to come from the error it measurably makes. Too few sales, too spread or too old, and there is no figure: the engine says why.