In 1908 the Estates Company decided to reverse its earlier policy of only leasing the land, and began to construct what were known as Hives, wide subdivisions of a longer single building that could be internally reconfigured for each tenant's needs. A series of 19 were built initially, available to rent at £80 per annum (£ as of ). Brooke Bond was one of the companies that took advantage of the Hives, before moving to its purpose-built factory on the park in 1922. The Estates Company also built large reinforced concrete warehouses, known as Safes. These buildings were fitted with sprinkler systems and were considered fireproof, which reduced insurance costs to 25 per cent of those of comparable warehouses elsewhere in the area. Each Safe had a capacity of , sufficient to hold 50,000 bales of cotton.