New figures have suggested that up to 120,000 houses in Wales - or one in 12 - may be sitting empty.
The majority were classed as "truly vacant", with no indication that people were living there.
About 15% (17,500) were identified as second homes.
The latest data, which has been published by the Office of National Statistics (ONS), combined Census figures from 2021 with information from other government bodies.
London was the only one of nine English regions with a higher proportion of vacant dwellings than Wales, while south west England was the only area with a marginally higher percentage of second homes.
The Welsh government said it was taking steps to ensure that "everybody has a right to a decent, affordable home to buy or to rent in their own communities".
But the ONS also warned that since the 2021 Census was conducted during the Covid pandemic, some homes that were usually occupied may have been empty when data was gathered.
With an estimated 7% of houses in Wales classed as "truly vacant", it was a higher proportion than every English region apart from London (7.3%).
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https://www.bbc.co.uk/news/uk-wales-67244326