Most of the early town was built within three years, as a small town designed to accommodate 20,000 people – only to later develop after independence into a modern city. Buildings in early Gaborone include assembly buildings, government offices, a power station, a hospital, schools, a radio station, a telephone exchange, police stations, a post office, and more than 1,000 houses. Because the town was built so quickly, there was a massive influx of labourers who had built illegal settlements on the new city's southern industrial development zone. These settlements were named Naledi. The latter term literally means "the star", but could also mean "under the open sky" or "a community that stands out from all others". In 1971, because of the growth of illegal settlements, the Gaborone Town Council and the Ministry of Local Government and Lands surveyed an area called Bontleng, which would contain low-income housing. However, Naledi still grew, and the demand for housing was greater than ever. In 1973, the Botswana Housing Corporation (BHC) built a "New Naledi" across the road from the "Old Naledi". Residents from Old Naledi would be moved to New Naledi. However, the demand for housing increased yet again; moreover, the residents who relocated to New Naledi disliked the houses. The problem was solved in 1975 when Sir Seretse Khama, the president of Botswana, rezoned Naledi from an industrial zone to a low-income housing area.