The Pebbles is of State architectural significance as one of Victoria's best and most distinctive suburban Californian Bungalows. The Pebbles is in original condition and still has distinctively designed accessories such as the perimeter fence and pergola gateway, as well as the rear garage. The Pebblers also possesses important internal detailing such as the use of stone (quartz) on the fireplace surrounds which was so important to the American creators of the Bungalow idiom, with its emphasis on suitability for place and the use of natural materials. There are also rare joinery details which highlight the Japanese influence of the Bungalow form and detailing. These may be seen in the adaptation of Asian lantern forms for hall lights, and use of open planning as a precursor to the combined living spaces sought in today's architecture. Historically, it has a long connection with the Whitehill family whose role in Footscray changed, with the urbanistation of the city itself, from dairying to real estate, It also relates closely to another important Bungalow design located on Barkly Street which was also designed by Schreiber & Jorgenson for the Whitehill family. The architect's surviving work in this period is valuable and idiosyncratic - the Pebbles and 600 Barkly Street examples being among the best.