Skipping to the good part:
The government would be required to comply with the following processes before new construction at the White House:
- The National Capital Planning Commission (NCPC) has review authority over new construction on federal properties in the capital region, including the White House, and NCPC has exercised that authority in recent years with the approval of a new security fence and a tennis pavilion at the White House.
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- The Commission of Fine Arts (CFA) would have an advisory review before new construction takes place at the White House.
These review processes also include the opportunity for the American public to comment on the project.
Under Article 2 the president has control of the NCPC. He can replace them at will.
Congress controls the purse, so one would think that congress would approve any funds for major renovations, but if the president uses donated funds there are no legal restraints to his renovations.