It is a victory for Batshaw Youth and Family Centres, but a big disappointment for the residents of Dorval who strongly oppose the idea.

The Supreme Court of Canada has ruled it will not hear the city of Dorval's appeal not to build a locked youth detention centre right in the heart of the city.

The plan is to expand Batshaw's facility on Dawson Avenue to include locked units for high-risk minors. The city of Dorval along with thousands of its residents have been fighting the plans.

Resident Rita Christie, who launched a petition against it, which got close to 6,000 signatures, says they are very disappointed by the decision, and were not expecting things to turn out this way.

"We are very surprised. There is always a 50/50 chance but we are absolutely stunned and surprised by it."

She says residents will meet next week to discuss where to go from here, and also hope to meet with Dorval Mayor Edgar Rouleau very soon.  

Meanwhile, Batshaw says it is happy with the decision and assures residents it will be a safe facility.

Construction is expected to be completed by Spring 2014.