The A-listed building in Pollok Country Park, which closed to the public last October, is to be transformed to create a dedicated space for special exhibitions and the conversion of offices into galleries.

The construction programme will open up three floors of the building, including the basement stores, allowing much more of the 9,000 artworks collected by shipping merchant Sir William Burrell to be enjoyed by visitors.

Glasgow City Council has pledged up to 50% of the £66m total cost, and the UK government has contributed £5m.

A tender seeking contractors for the revamp was issued in June shortly after planning consent was granted by the local authority.

John McAslan & Partners was appointed as architect and lead designer for the project.

David McDonald, chair of Glasgow Life, the trust which runs the Burrell Collection on behalf of the city council, said: “The Heritage Lottery Fund has supported the development of Glasgow Museums for almost two decades and its significant investment has played a vital role in the success and growth of the city’s cultural offer.

“With its support and commitment, the Burrell Collection is once again a catalyst for change, driving regeneration of the historic and cultural heritage of Pollok Country Park, greatly enhancing the wider cultural offer Southside of Glasgow and playing an important role in the city’s growing tourism offer by contributing to the economic impact it brings to the city.”

Seona Reid, chair of the Scotland committee of the HLF, said: “It is timely that in a year when we are celebrating Scotland’s History, Heritage and Archaeology, we are able to support such an important collection.

“It will be transformed so it can continue to be a place of joy and inspiration for local, national and international visitors for many years to come.”

The work will begin in the spring of next year and is due for completion by 2020.