But unlike bankrupt Shane Filan, who cannot get any offers for his mansion even at the knockdown price of €999,000, Kian and his wife, Jodi Albert, have simply been ordered by to take down a timber extension to the boundary stone wall.
The couple said they wanted the fencing for two years until landscaping and foliage matured to hide their home from the road, but Sligo County Council has refused their application
The luxury home is just half a mile from a beach where Kian indulges his passion for surfing.
The home's impressive kitchen was custom-made and features Asian fretwork door with distressed antique mirrors.
In the past three years, the couple have extended and modified the five-bedroom house at Carrowdough, Strandhill, building into the attic and fitting out a music and entertainment room. They've doubled the bungalow's size to 5,231sq ft.
Kian is a judge in RTE's The Voice of Ireland and Jodi starred in the Channel 4 series Hollyoaks in her native England before settling in Sligo.
The couple married in Barbados in May 2009 and their first baby, Koa, was born on December 20, 2011.
The couple named their son after the Hawaiian koa tree. "Some of the best surfboards are made from its wood, so when Koa was born it just suited him," says Kian.
Meanwhile, Shane Filan, who was reportedly offered €10m for his Sligo home at the height of the boom, cannot find a buyer.
Set behind electronically controlled gates on landscaped grounds, with a lake, patio and terraces as well as a golfing area, the house also features a gym, snooker room, two living-rooms, a music room and a study.
Shane (32), who sold 43m records worldwide with Westlife, was declared bankrupt last June in the UK, where he now lives.