This excerpt taken from the ADSK 8-K filed Jan 28, 2010.
On January 27, 2010, Autodesk, Inc. (Autodesk) entered into a fourth amendment (the Amendment) to that certain Lease dated October 5, 1993, as amended to date, by and between Autodesk and J.H.S. Holdings, L.P. (as so amended, the Lease), pursuant to which Autodesk leases its headquarters building located at 111 McInnis Parkway, San Rafael, California. The Amendment is effective as of December 31, 2009, and its primary effect is to extend the term of the Lease until December 31, 2019 for an aggregate base rent of $32,588,809.68 payable in monthly installments over ten years, subject to options to renew the lease for additional periods as set forth in the Amendment. The Amendment also addresses terms relating to improvements to the premises, repairs and maintenance, and ancillary facilities.