Holiday homes have quite the impact in many parts of Wales.

Occupancy ratings per house seem to be quite low on average [1], but weirdly I can’t seem to find any figures for overall occupancy.

[1] https://www.ons.gov.uk/peoplepopulationandcommunity/housing/...

Edit: clarification

Maybe on a hyper local basis, but beware there will be negatives with flushing them out too.

On a national scale I'm afraid it's just not statistically significant.