The museum has commissioned preservation architect Wank Adams Slavin Associates to tackle the cracks that have begun to trouble the building in recent weeks.
The practice - which worked on the renovation of Fallingwater - has been charged with completing the work by 2007, two years before the landmark's 50th anniversary.
The practice will first undertake an evaluation exercise. With the help of engineers, it will assess the structural soundness of the spiral building.
Only after this work is complete will any work begin. This must, according to the brief, be highly sensitive and respect all 'Lloyd Wright's original intentions'.