The work - to the tunnel lining on the Jubilee line between Finchley Road and Waterloo - includes six-day closures of stations during Christmas 2013 and Christmas 2014. There will also be a closure of the section over Easter 2014.
The work covers a number of weekends and bank holiday periods from June this year to the end of 2014, with the possibility of some additional closures in 2015 in order to complete the maintenance.
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The property developer painted the mews house in March last year after she was denied permission for a basement below the property.
Profits at the estate agent plummeted 42% in the first half of the year.
Ionut Gheorghe, 27, was detained in Los Molinos near Madrid on Friday by Spanish police under a European Arrest Warrant.