Do you have a source? Where and when did this originate?
It's okay to outline a theory in a post like this without providing evidence for every single element in one go. However, it would be good to get an early feeling that it is backed by any evidence at all.
For the moment, let me concentrate on two elements of that theory:
Here is a rough timeline according to publicly available documents:
1991: Congress established the Pentagon Reservation Maintenance Revolving Fund for the expressed intent of renovating the Pentagon.
1994: The design of the Segment 1 (that's the part that AA77 crashed into) renovation was completed and reconstruction of the Basement began
1996: Osama Bin Laden moves from Sudan to Afghanistan, issues a Fatwa against the USA, and is presented a first draft of the plan for 9/11 by Khalid Sheikh Mohammed, but nothing came out of that at the time.
December 1997: Wedge 1 is vacated
January 1998: Construction begins on Wedge 1
late 1998 or early 1999: OBM gives approval to KSM. Around that time, US intelligence has first information about hijack plans
1999: Last revisions of design for Wedge 1
2000: Targets for attacks, including Pentagon, selected by Al Quaeda leaders
January 2001: Donald Rumsfeld sworn is as Secretary of Defense
February 2001: First tenants move back into completed Wedge 1
Your theory implies the temporal sequence
Al Quada plans hijacks -> Rumsfeld enters government along with other Bush appointees -> Pentagon renovation planned and executed.
The true sequence was
Pentagon renovation planned -> Al Quada plans attacks -> Pentagon renovation executed -> Rumsfeld becomes SoD.
I think this refutes that part of the theory.
Sources:
Blue:
http://classic-web.archive.org/web/...enovation.pentagon.mil/history-renovation.htm
Purple:
http://en.wikipedia.org/wiki/Donald_Rumsfeld
Green:
http://en.wikipedia.org/wiki/Planning_of_the_September_11_attacks