The cost of transforming a derelict market hall into offices and shops has risen and fewer parking spaces will be provided than planned, but the scheme should still be finished on time.
Carmarthenshire Council is leading a project to overhaul Llandeilo market hall, and cabinet members were told an extra £300,000 was required, taking the total cost to £4.16 million.
The additional cost is due to more piling work than anticipated, sprinkler installation and the replacement of a floor slab.