The bar chart shows the following average house price by local authority in 2017 (blue bar) and 2018 (orange bar):
Cardiff – £200 082 (orange), £190 244 (blue)
Ceredigion – £179 419 (orange), £170 682 (blue)
Flintshire – £167 673 (orange), £158 629 (blue)
Gwynedd – £148 891 (orange), £145 362 (blue)
Isle of Anglesey – £178 247 (orange), £157 541 (blue)
Pembrokeshire – £166 374 (orange), £163 386 (blue)
Powys – £179 789 (orange), £172 568 (blue)
Swansea – £142 592 (orange), £138 422 (blue)