Egerton House was a small Elizabethan mansion which stood on the High Street in the town of Berkhamsted, Hertfordshire in England.

As well as its architectural merit, Egerton House was noted for its occupancy by the Llewelyn Davies family and its literary association with J. M. Barrie, author of Peter Pan.

Cobb records that a seal inscribed with the name of the Fraternity of St Clement (later the Worshipful Company of Founders) was discovered in the garden behind Egerton House.

It was later owned, along with Harriots End Farm, by Rev Dr Robert Brabant who was rector of the Church of St Peter, Great Berkhamsted.

Land documents survive which record that a Mr Lyttleton of Egerton House paid eight shillings for the orchard.

Barrie's play, Peter Pan, or The Boy Who Wouldn't Grow Up, debuted at London's Duke of York's Theatre in the same year.

The Rex Cinema was designed in a striking Art Deco style architect David Evelyn Nye and opened in 1938 by Viscountess Davidson.