KING AIR FLT CREW LNDG WITHOUT CLRNC.

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I WAS FLYING AS CAPT ON A CPR KING AIR 350 RETURNING TO ZZZ AT APPROX XA15 LCL TIME. THE WX WAS CLR AND THE ONLY OTHER TFC ON APCH FREQ HAD BEEN CLRED TO TWR FOR LNDG WHILE WE WERE ABOUT 6 OR 7 MI OUT. WE WERE CLRED FOR A VISUAL APCH TO RWY XXL; A CHANGE FROM OUR ORIGINAL INSTRUCTION AND HANDED OFF TO THE TWR CTLR. AT THIS POINT WE WERE NEARING THE RWY AND IN THE PROCESS OF CONFIGURING THE AIRPLANE FOR LNDG AND RUNNING THE BEFORE-LNDG CHKLIST WE ACTUALLY LANDED BEFORE THE FO CONTACTED THE TWR. ON THE LNDG ROLLOUT HE CONTACTED THE TWR AND WE WERE INSTRUCTED TO TAXI TO THE RAMP. THE PERFECT WX; NO TFC IN THE VICINITY; LATE NIGHT ARR; AND LAST MIN PREPARATIONS FOR LNDG WERE ALL CONTRIBUTING FACTORS TO THIS EVENT AND RESULTED IN US ACTUALLY TOUCHING DOWN BEFORE CONTACTING THE TWR. BOTH THE FO AND MYSELF ARE RPTING THIS EVENT AND WE BOTH REALIZE THAT COMPLACENCY HAS NO PLACE IN AVIATION. WE WILL SERIOUSLY CONSIDER ADDING 'LNDG CLRNC' TO THE BEFORE-LNDG CHKLIST. SUPPLEMENTAL INFO FROM ACN 807623: THE BENIGN CONDITIONS MAY HAVE CONTRIBUTED TO THE SITUATION. THIS WAS THE LAST FLT OF A BUSY WK AND BEING ABLE TO SEE THE ARPT FROM 20+ MI OUT CONTRIBUTED TO MY LACK OF DILIGENCE. IN ADDITION; SINCE THERE WAS NO OTHER TFC IN THE APCH SECTOR; THERE WAS NO RADIO CHATTER TO PROMPT ME THAT I'D FAILED TO SWITCH FREQS. ADDITIONALLY; FOR THE LAST 20 YRS I HAVE BEEN FLYING KING AIR FROM THIS ARPT. CLRLY THIS ADDED A CERTAIN ELEMENT OF COMPLACENCY THAT I MUST COMBAT IN THE FUTURE. FINALLY; THE PREVIOUS DAY'S DUTY ENDED LATE IN THE DAY ALSO. ALTHOUGH I HAD PLENTY OF TIME BTWN FLTS; DOMESTIC ISSUES INTERRUPTED THE QUALITY OF REST THAT I ACHIEVED. THIS TOO MAY HAVE BEEN A FACTOR. CONCLUSION: WE ALL CAN BE FOCUSED WHEN THE CHIPS ARE DOWN; LOW CEILINGS; HVY XWINDS; ETC. CLRLY IT'S JUST AS IMPORTANT TO BE DILIGENT AND PROFESSIONAL WHEN CONDITIONS ARE ROUTINE. I WILL DISCUSS WITH MY CHIEF PLT ON IMPROVING COCKPIT TECHNIQUE AND CREW COORD TO PREVENT A RECURRENCE OF THIS INCIDENT.