Gwyneth Paltrow and Chris Martin are selling their $11.5 million London home.

The couple are moving out of the upmarket area of Belsize Park in North London after a series of arguments with their neighbors, who are upset by constant modifications to their property. "We have had years of their building works. They have taken down trees so they can park their flash cars in the driveway and they put a huge swimming pool in the back garden," a local said.

Another neighbor added, "The trouble is that it will probably be a similar sort that moves in and we'll have this all over again."

Iron Man 3 actress Gwyneth and Coldplay singer Chris - who have Apple, nine, and Moses, seven, together - bought their home ten years ago for $4 million from actress Kate Winslet. They then bought the neighboring property for $5 million as well as another house on the other side and combined all three to make a huge 33-room mansion.

They are thought to be selling the house and downsizing because they don't spend much time there after relocating to Los Angeles last year. "They are looking at flats in Regents' Park to use as a bolthole when they visit London," a source said.

The power couple also have a warehouse penthouse in New York which they bought in 2007 for a reported $5 million.