Every company SOP may be slightly different but I think it's common to be fully configured by 1,000' AGL in IMC conditions and 500' in VMC. Before you "lock and load", every carrier may be slightly different.

In my freight dogs days in the three-holer, we used to have contests going into the hub whenever it was VMC. The rules were that once you pulled the thrust levers to idle on approach above 5,000', you could not move them again until the completion of the landing roll. The A/C had to be fully configured by 500' AGL as per company SOP. Talk about a great exercise to learn how the aircraft performs during the configuration process.

The good old days.

G'Luck Mates