Claim: About 92% of our land mass is not built on.
Fact-check: Has 92% of the country not been built on? - Full Fact
Verdict: it's estimated that between 88% and 99.9% of the uk isn't 'developed' or built on. but that doesn't mean all of the remainder is available for development.
Organisation: Full Fact
Author: Hannah Phaup
Date published: 2017-12-19T00:00:00