Anna Friel is facing a £100,000 bill as a neighbour claims an extension to the actress’s Grade II-listed Windsor home has strayed three inches onto her land.
Ms Friel, 39, bought the £1 million Georgian property, which once served as a home for staff at Windsor Castle, in 2013.
She was granted planning permission for extensive renovations despite objections from neighbours and members of the Windsor and Eton Society, the Mail On Sunday reports.
And now, due to the build’s boundary walls falling three inches wider than agreed, lawyers have been consulted and independent surveyors drafted in to produce a report.
If officials at Windsor and Maidenhead Council agree that the extension falls outside of what was agreed, the actress could face having to tear down the whole thing, which was completed three months ago at a cost of £100,000.
Anna Friel's neighbour claims that one of the extension's boundary walls (both circled in planning permission sketches) has encroached into her property
Ms Friel was born in Rochdale, Greater Manchester, and she has been acting since the age of 13, appearing in a number of British television programmes.
She played Beth Jordache in the Channel 4 soap Brookside, which had the first lesbian kiss in a British soap opera in January 1994.
She made her West End theatre début in London in 2001 and has subsequently appeared in several productions, including in an adaptation of Breakfast at Tiffany's and as Yelena in a 2012 production of Chekhov's Uncle Vanya.
Eight neighbours are believed to have written to the council about her Windsor extension plans, with one taking legal action and another considering it.
One of them told the Mail on Sunday: "Both neighbours on either side have serious issues. Three inches may be a laughable amount, but it's a matter of principle."