The following are descriptions of five possible scenarios on the future of the annex building at 12 Dahlia, presented on Nov. 26 by Dorval city officials.

Scenario 1: Status quo – The annex would be left as is. However, the building could not be occupied in its current state. The city calculates that the combined annual cost for energy and maintenance of the annex would be around $95,000, with costs expected to vary year by year.

Scenario 2: Partial demolition – Brick cladding would be removed at certain locations of the annex’s exterior and replaced with fibreglass panelling to overcome structural deficiencies. The building’s windows would be replaced. The estimated cost of this option would be just over $9.5 million. This plan does not, however, include the cost of refitting the interior to bring it up to code.

Scenario 3: Full demolition of exterior walls – The annex’s exterior envelope would be demolished and rebuilt. All brick cladding and windows would be replaced. The estimated cost of this option would be around $9.9 million. Like Scenario 2, this plan does not include the cost of refitting the interior of the annex.

Scenario 4: Complete demolition for green space – The annex would be torn down and turned into a community green space. The estimated cost for this scenario would be around $1.2 million. This includes the cost of relocating materials within the annex, like the heating system. It does not, however, include the cost for sealing the wall of the adjoining Quatre Vents building, which would be exposed following the annex’s demolition.

Scenario 5: Complete demolition of the annex to be rebuilt for different uses – Like in Scenario 4, the annex would be completely demolished. Unlike in Scenario 4, however, a new building would be constructed attached to the Quatre Vents residence. The use of the building will depend on public desire. Examples provided include the conversions of historic religious buildings into cultural centres in Bromont, Granby and St. Hyacinthe. Presenters said it would be impossible to determine an exact cost for such a project at this time but noted that the approximate costs could range between $5.4 million and $20.6 million.