Wicklow Sinn Féin TD John Brady has welcomed the fact that the site of St Ernan's NS has been secured.
The site has been vacant since 2016 when St Ernan's amalgamated with St Joseph's GNS to form St Coens NS.
There have also been ongoing complaints about anti-social behaviour taking place both inside the derelict building and on the grounds of the site.
Deputy Brady said: 'I'm glad that the owners of the former St. Ernan's school site have finally moved to secure the dangerous building and remove old pre-fab classrooms from the site.
'Last year I asked the council to take action and request that the owners of the site secure it. A Dangerous Structure Notice was finally issued and Knoxpark Developments have finally finished the work of securing and making safe the site.
'The completion of the safety works on the site coincides with a new planning application lodged by Knoxpark Developments to demolish the old school building and construct 18 semi detached and terraced houses on the site. A decision on the planning application will be made by Wicklow County Council in the coming weeks.'
Deputy Brady added: 'Thankfully the site which had become dangerous and an eyesore has been cleaned up and secured. I want to thank the council for acting on this and serving the Dangerous Structure Notice which resulted in this action being taken.'
Knoxpark Development Ltd. intend to knock down the existing school building and prefabricated classrooms in order to construct 18 semi detached and terraced houses.