(1800–1805) Originally common land for the parishes of Battersea and Clapham,
William Hewer was among the early Londoners to build adjacent to it.
Samuel Pepys, the diarist, died at Hewer's house in 1703. The land had been used for
cricket in 1700 and was drained in the 1760s, In the early 1770s, during his stay in London representing America in affairs of the state,
Benjamin Franklin had written a paper explaining how he used the ponds for science experiments, and in developing a "magic" trick. While traveling on a ship, Franklin had observed that the wake of a ship was diminished when the cooks scuttled their greasy water. He studied the effects at Clapham Common on a large pond there. "I fetched out a cruet of oil and dropt a little of it on the water ... though not more than a teaspoon full, produced an instant calm over a space of several yards square." He later used the trick to "calm the waters" by carrying "a little oil in the hollow joint of my cane."
J. M. W. Turner painted "View on Clapham Common" between 1800 and 1805, showing that even though the common had been drained, it still remained "quite a wild place". The common was converted to parkland under the terms of the
Metropolitan Commons Act in 1878. As London expanded in the 19th century, Clapham was absorbed into the capital, with most of the remaining palatial or agricultural estates replaced with terraced housing by the early 1900s. In 1911, Scottish evangelist and teacher
Oswald Chambers founded and was principal of the Bible Training College in Clapham Common, an "embarrassingly elegant" property situated at 45 North Side that had been purchased by the Pentecostal League of Prayer. During
World War II, a heavy
anti-aircraft artillery site had been set up on the common. Storage bunkers were built on the Battersea Rise side; two mounds remain. == Governance ==