The school was originally housed at the junction of Harborne Road and Hagley but within two years had doubled in size and moved to The Laurels at 280 Hagley Road. In the post-war years EHS moved to its current new site Westbourne Road.

The School has continued to grow in pupil numbers and facilities with a swimming pool opened in 1965, new classrooms, art rooms and an extension to Prep added in the eighties, new Music Department, ICT and Home Economics block opened in the early nineties and the Octagon and an all-weather surface installed in 2000. 

The 600 seat Octagon performance space built in 2005 sits at the heart of the school site, adjoining the Prep and Senior Departments. A dramatic eight-sided structure, it has transformed the landscape and identity of the School by giving the site a new heart and focus. The School invested £4.5 million in the building and succeeded in its aim of providing a multi-purpose space for teaching, receptions, performances, conferences and conventions. All parts of the School make use of the Octagon; Westbourne performs its Christmas production there each year, Prep girls use it for drama workshops, concerts and the annual disco and Senior girls attend Assembly there and have timetabled classes plus extracurricular activity inside.

In 2011, the School completed its most ambitious project yet. A £3.5 million build created a modern glass façade, extended main Reception and Library, the Dame Kelly Holmes Fitness Suite and a state-of-the-art Sixth Form area. In April 2015, the school completed work to enhance the Preparatory School, resulting in a two storey extension to both the front and rear of the school and a dedicated art, design and exhibition space.

The newest addition to EHS is the Hexagon. Completed in 2018, the Hexagon is a large and versatile space for teaching, meetings, performance and events.

The School's Governing Council is committed to a rolling programme of enhancements to continually improve facilities for pupils.