Heritage leaders in Norwich want the £26 million refurbishment plan to turn St Andrew's Hall into a conference venue to be one of the greenest projects in the country, it is reported.
Norwich Heritage Economic and Regeneration Trust (Heart) has bid for £3 million of funding from the European Regional Development Fund Carbon Competitiveness Programme, according to the Norwich Evening News.
They want to use local supply chains and labour for the project in order to reduce carbon emissions.
Michael Loveday, chief executive of Heart, tells the newspaper: "This is not a token gesture - a low carbon approach will be at the very core of the project. We hope to use local supply chains and local labour to reduce the carbon offset."
He adds that the trust wants Norwich to be at the forefront of sustainable heritage schemes.
Meanwhile, construction work on the UK's first carbon-negative development is underway in Leeds.
Greenhouse, which is being built by Citu, will include homes, office space and conference facilities.