Carmarthenshire County Council is seeking contractors for two frameworks worth a total of £160 million.
The Welsh council will appoint eight firms to a £100m residential panel covering new build and refurbishment housing work across a range of authorities.
It will also choose eight contractors for a £60m non-residential framework mainly focusing on schools work across South-west Wales.
Deadline for expressions of interest in both frameworks is 2pm on 10 January 2012.
For further details, email: CCCRCF@carmarthenshire.gov.uk