Sundridge is situated in the north of the London Borough of Bromley, in the ward of Plaistow and Sundridge. Sundridge is south of Grove Park in the London Borough of Lewisham. On the west side of Sundridge is Downham (which although most parts being in the London Borough of Lewisham) is for the most part in the BR postcode area.
The district contains Sundridge Park railway station.