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We demonstrate charge sensing of an InAs nanowire double quantum dot (DQD)coupled to a radio frequency (rf) circuit. We measure the rf signal reflectedby the resonator using homodyne detection. Clear single dot and DQD behaviorare observed in the resonator response. rf-reflectometry allows measurements ofthe DQD charge stability diagram in the few-electron regime even when the dccurrent through the device is too small to be measured. For a signal-to-noiseratio of one, we estimate a minimum charge detection time of 350 microsecondsat interdot charge transitions and 9 microseconds for charge transitions withthe leads.

Radio frequency charge sensing in InAs nanowire double quantum dots