Lebreton Flats redevelopment.

Ontario Construction News - July 2020. The 900 Albert Street condo will be 65 storeys high.

A cluster of condos will be on the corner of Preston and Albert.(Image is from Google Maps 2020.)

Why this endeavor should not proceed:
Preston Street cannot handle any more traffic. A 2002 traffic study:
              Table 2: Summary of Existing Conditions - October 2002.
Road Name                                                                                     Peak Volume veh/hr.
Baseline Rd. Merivale to Prince of Wales                                     2,000      4 lanes.
Carling Avenue Hwy 417 to Booth                                               2,000      6 lanes.
Merivale Road Clyde to Baseline to Kingston                                900       4 lanes.
Merivale Road Baseline to Kingston                                            1,200      4 lanes.
Merivale Road Kingston to Carling                                              1,200      4 lanes.
Merivale Road Carling to Hwy 417                                              n/a          2 lanes.
Fisher Avenue Dynes to Carling                                                  1,000       2 lanes.
Prince of Wales Drive Dynes to Preston                                      1,500       2 lanes.
Preston Avenue Prince of Wales to Carling                                 1,100       4 lanes.
Preston Avenue Carling to Hwy 417                                              800       4 lanes.
Parkdale Avenue Carling to Hwy 417                                            600       2 lanes.
Holland Avenue Carling to Hwy 417                                             800       2 lanes.
(Google: Central Experimental Farm National Historic Site Management Plan Page 7/20.)

Booth Street cannot handle any more traffic.
"LeBreton development angers residents." Ottawa Citizen newspaper, December 13, 2002:
"The NCC got an earful at a consultation meeting last night. About 30 residents attended the public consultation at Tom Brown Arena. Many were upset that the development, which will include office towers, retail, residential and the new War Museum, would put even more traffic pressure on Booth Street, especially heavy trucks. 'It takes me 15 minutes to back out of my driveway every morning as it is' said (a resident) who lives on Booth Street. 'They're destroying the beauty of old Booth Street.'"
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Prime Minister Brian Mulroney and Deputy Prime Minister Erik Nielsen designated Lebreton a National Interest Land Mass. 
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Lebreton is only 4,440 feet or less than a mile from the Parliamentary Precinct. (Hon. George McIlraith, Minister of Public Works, House of Commons, November 23, 1967.) The Lebreton Flats were envisioned as a western extension to the Parliamentary Precinct. Buildings on or near the Parliamentary Precinct cannot be any taller than the Peace Tower. (Hon. Stanley Knowles, November 2, 1967, House of Commons.)