The Boltons is a street and garden square of lens shape in the Brompton district of the Royal Borough of Kensington and Chelsea, London, England (postcode SW10). The opposing sides of the street face the communal gardens (as two non-semicircular crescents) with large expansive houses and gardens, in what is considered the third-most expensive street in the country with the average house price at 15 million pounds. The elliptical central gardens of the Boltons are Grade II listed on the Register of Historic Parks and Gardens.