<P> The original early 19th - century interior designs , many of which survive , include widespread use of brightly coloured scagliola and blue and pink lapis , on the advice of Sir Charles Long . King Edward VII oversaw a partial redecoration in a Belle Époque cream and gold colour scheme . Many smaller reception rooms are furnished in the Chinese regency style with furniture and fittings brought from the Royal Pavilion at Brighton and from Carlton House . The palace has 775 rooms , and the garden is the largest private garden in London . The state rooms , used for official and state entertaining , are open to the public each year for most of August and September and on some days in winter and spring . </P>
how many rooms is there in buckingham palace
775