Lettings and estate agent Benham and Reeves looked at average property costs and how it compares to the national average.
It also looked at the difference between the most and least expensive postcodes within the same national park.
The figures found that on average, it will set you back £267,817 to buy in a national park, 16% more than the current UK house price.
The New Forest is home to the highest national park house price (£425,738) coming in at 84 per cent higher than the UK average.
The South Downs ranks second with an average price of £423,982; 83 per cent higher than the UK average.
No surprise then, that these two national parks are also home to the majority of the most expensive postcodes. The top 29 to be exact, with SA42 in Pembrokeshire the only other postcode within the top 30 most expensive.
On average, the house price gap between the most affordable and least affordable postcode across all parks is 139 per cent.
The Brecon Beacons is home to the largest gap between the most affordable and least affordable postcodes. There is a 263 per cent difference between the CF44 postcode (£109,687) and the NP8 postcode (£398,125).
For overall affordability, Snowdonia is home to the lowest average national park house price (£188,001), along with Loch Lomond (£190,540) and the Brecon Beacons.
Marc von Grundherr, Director of Benham and Reeves, commented: “Staycations look to be on the menu for most this summer, but if you’re planning on making the move a permanent one then living in or around one of our beautiful national parks could be a wise move.
“While these areas understandably come with a price premium, that doesn’t mean you have to pay above the odds for the privilege of calling them home. Like all areas of the UK market, prices can vary from one pocket to the next and there are some considerable savings on offer even in the same national parks.
“Take the New Forest for example. It may be the most expensive on the whole and the least affordable areas will set you back over £700,000. However, opting for a different part of the park can save you over £500,000 while still enjoying the benefits of a national park.”
National park ranked by the highest overall house price to the lowest
1. New Forest - £425,738
2. South Downs - £423,982
3. Yorkshire Dales - £307,270
4. Lake District - £268,893
5. Dartmoor - £284,865
6. The Broads - £281,450
7. Exmoor - £279,385
8. Peak District - £265,955
9. North York Moors - £234,061
10. Pembrokeshire Coast £227,705
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