The new addition to the Chateau Laurier Hotel is banned by Parks Canada.

The planned extension to the Chateau Laurier in Ottawa, Ontario violates the "Parks Canada Standards and Guidelines for the Conservation of Historic Places in Canada" (2010):

Additions or Alterations to an Historic Place   Page 52/300.

     "The construction of an exterior addition in an historic place may seem essential for a proposed new use, but the Guidelines emphasize that such new additions should be avoided, if possible, and only after it has been determined that those needs cannot be met on another site or by altering non-character-defining interior spaces. An addition should be designed so that the heritage value of the historic place is not impaired and its character-defining elements are not obscured, damaged or destroyed. The addition should be physically and visually compatible with; subordinate to, and distinguished from the historic place as stated in Standard 11."

Examples of additions or alterations to historic buildings, that blend in and do not overwhelm or obscure the original landmark:

The Lord Elgin Hotel Ottawa annex.

Zoe's Restaurant, which is is part of the Chateau Laurier, a former railway hotel.

The Canadian Centre for Architecture, which is next to Shaughnessy House in Montreal.

My mother, sister and baby daughter in front of the Prince of Wales Hotel, a railway hotel located in the Waterton National Park, Alberta. 1989. The hotel has been preserved.

The Prince of Wales Hotel can be seen in the distance.