New-build homes are, on average, six times more energy-efficient than older ones - so possibly, the premium for new homes pays off in the long run.
The message to build green has been embraced by niche developer Richstone Properties, which has resourcefully squeezed four houses and two apartments on to a back garden plot in East Sheen - and won plaudits from green-minded local Tory MP Zac Goldsmith.
Set in newly landscaped and gated grounds off Colston Road, the crisp architecture mixes brick, render and timber to provide a clean-line, Scandinavian feel.
Flexible and thoughtfully planned interiors have high ceilings, pocket doors that slide back into the wall, allowing spaces to be opened up, and light-filled basements. Prices from £1,395,000.