UP to 80 new jobs will be created when the delayed final phase of a £15million revamp of Penistone town centre is completed, according to its developers.
Dransfield Properties has begun building six commercial units, 21 office units and car parking on St Mary's Street, opposite the Royal British Legion.
Planning permission was granted in 2011 but the project has stalled due to a series of issues, including access and funding.
The Tankersley-based firm expects work to be finished by November, completing the multi-million pound regeneration scheme which included Tesco and the market barn.
Mark Dransfield, Dransfield managing director, said: "We're delighted to be starting work on the gateway project, there has been a great deal of support for this final phase of the development.
"The scheme has been designed to fit in with the street scene and also with the new markets areas so it really will bring something new and enhance this part of the town."
The project - which has attracted £1.2million of funding from the European Union - also included the relocation of the town's fire and ambulance stations to Springvale in 2009.
According to Dransfield, there has been interest from companies wishing to relocate to Penistone and several local business have already committed to taking space inside the building once construction has been completed.
Cllr Steve Houghton said: "This is a huge asset to Barnsley as a borough, as well as Penistone as a town, and we need to complete it to get the full benefit.
"Retailers and businesses want to relocate here and, no doubt about it, it will be successful when it's built. It will bring more jobs and more money into the local economy."