A battle royale is unfolding in Sydney's Rozelle between private land owners and the NSW government over properties, on a large tract of land, that has been earmarked to be used as part of the construction of the WestConnex infrastructure.

Private timber merchant Swadlings and crane hire firm Gillespies are in a fight with the NSW Roads and Maritime Services over their sites at 92-94 and 84 Lilyfield Road, respectively under the government's compulsory acquisition powers.

The two parcels of land are adjacent to the listed Desane's land, which has started legal action this week in the Supreme Court of NSW over its 5274 sqm property at 68-72 Lilyfield Road.

The WestConnex proposal includes a plan for the acquisition of land on Lilyfield Road, Rozelle, including Desane Group's site

According to Swadlings and Gillespies, the issue is that the land has been given what they feel are ''lowball'' valuations by the NSW Valuer General to buy them out through compulsory aquisition.