National Park homes command a 24% price premium, worth about £66,500 at the UK average

Nationwide's analysis, published 31 August, puts the premium for a home inside a National Park at 24% against an identical property elsewhere - roughly £66,500 on the UK average of £278,784. Tight development control and limited new supply help sustain it, with a 6% fringe premium within 5km and 14% in National Landscapes. For sellers that supports asking prices; for buyers it is a real affordability cost. The figures are medians from Nationwide's own lending, not the whole market.