“The furniture budget of the European Parliament alone runs to six million euros a year.
“Even if the UK’s share of these assets is counted in the least favourable way, overlooking our role as a persistent net contributor, this reality will have to be factored in to any talks.
“That puts British negotiators in a good position for working out the terms of our leaving the EU.”
EU negotiators are understood to be preparing for a brutal fight with Britain to try to reclaim a bill for outstanding pension liabilities for former and serving UK-born EU staff.
But campaigners believe Britain’s share of the EU assets must also be weighed up in any exit negotiation with the EU.
Senior Tory MP Steve Baker said: “There is a lot of talk about liabilities such as EU pensions at the moment but there are also assets as well.
“I would encourage the Government to look very carefully at where we can recover assets from the EU.”
The European Commission declined to discuss the forthcoming Brexit negotiations, insisting it was still waiting for Theresa May to trigger Article 50 of the EU’s Lisbon Treaty, the formal mechanism for leaving the bloc.
A commission spokeswoman said: “As Article 50 has not been triggered yet, it is far too early for the Commission to comment on any aspect of what could happen at the point of time when the UK leaves the EU.
“For context on the buildings used by EU institutions – they are not necessarily owned by the EU. It is a mixture of ownership, lease or rent, the underlying principles being optimal price and value for money.”