CoStar Expands UK HQ After Signing 51,721 Sq Feet London Lease

CoStar has signed a lease to expand its European footprint with an expanded headquarters in London.

CoStar has taken a 10-year lease and plans to relocate staff in August 2025.

The real estate giant already has an active London HQ, 42,254 square feet of office space shared between The Shard and the Blue Fin building.

But now CoStar will expand away from the Shard and wholly into the Blue Fin to a 51,721 square feet space. The new space will see CoStar consolidate its UK footprint into one space with extra room for expansion.

Assets including CoStar UK, the commercial real estate information provider; STR, the hospitality benchmarking data group; LoopNet, the commercial real estate online marketplace; and residential property portal OnTheMarket—are likely to be partly or wholly relocated to the new space.

CoStar has 6,400 employees.

Online Marketplaces has approached CoStar for a quote.