LGS is based on a multi-acre campus on the south side of Loughborough town centre; it occupies a site adjacent to Loughborough High School and Fairfield Preparatory School, laid out along Burton Walks.
Loughborough Amherst School (formerly Our Lady's Convent School) is situated on Gray Street, about 5 minutes' walk away from the main campus.
The core of the LGS campus is the quadrangle, on the eastern side of Burton Walks.
Dating from 1850, Big School, consisting of the Victorian Gothic tower, original gymnasium and hall are at the head of the quadrangle, nowadays accommodating the History department, Chapel and Sixth Form common room, and are the oldest buildings on the current site.
 The quadrangle is completed by School House (the senior boarding house, which was built as the Headmaster's residence), the Queen's Building (1995, English and Drama), the Barrow Building (c. 1910, Classics and Modern Languages), the Cope Building (2000, Modern Languages) on the north side and the Library and old laboratory buildings (now housing Computing and Religion and Philosophy) on the south side.
 Big School and School House are both grade II listed, as is the gatehouse
On the western side of Burton Walks are located the Ireland Building (Physics), the Norman Walter Building (Chemistry), Murray Building (Biology), Pullinger Building (Mathematics) as well as the Hodson Hall, where most school functions and assemblies are held, the Burton Hall, primarily a dining hall, and the Art and Design department, Sports Hall, swimming pool and the Combined Cadet Force's buildings.
 A number of houses on this side of the Walks are now owned by the School, including Buckland House, the administrative hub of the School, containing the Headmaster and Deputy Headmasters' offices as well as the general office.
 Other houses include Red House, formerly used for music lessons but now largely occupied by the Business Studies, Economics and Politics departments as well as reprographics; Friesland House containing Network Services, and one more houses the Bursary.
 Both the Headmaster of the Grammar School and the Headmistress of the High School traditionally reside in properties on the Walks.

The astroturf tennis and hockey pitches are not strictly part of the Grammar School, but are shared with the High School, although a new hockey pitch purely for the Grammar School was opened in January 2019.
The Music School (2006), is also another of these shared buildings, it includes a recital hall as well as practice rooms and recording facilities.

In addition to the main campus, the School owns a 70-acre (280,000 m²) site at the nearby village of Quorn, consisting of sports facilities, including rugby, football, cricket pitches and athletics.

The Burton Chapel is located in Loughborough's Parish Church, school services are held in both this chapel and a second chapel located in the School's quadrangle.

There is a public right of way along Burton Walks connecting the council estate of Shelthorpe with Loughborough town centre.
LGS is based on a multi-acre campus on the south side of Loughborough town centre; it occupies a site adjacent to Loughborough High School and Fairfield Preparatory School, laid out along Burton Walks. Loughborough Amherst School (formerly Our Lady's Convent School) is situated on Gray Street, about 5 minutes' walk away from the main campus. The core of the LGS campus is the quadrangle, on the eastern side of Burton Walks. Dating from 1850, Big School, consisting of the Victorian Gothic tower, original gymnasium and hall are at the head of the quadrangle, nowadays accommodating the History department, Chapel and Sixth Form common room, and are the oldest buildings on the current site.  The quadrangle is completed by School House (the senior boarding house, which was built as the Headmaster's residence), the Queen's Building (1995, English and Drama), the Barrow Building (c. 1910, Classics and Modern Languages), the Cope Building (2000, Modern Languages) on the north side and the Library and old laboratory buildings (now housing Computing and Religion and Philosophy) on the south side.  Big School and School House are both grade II listed, as is the gatehouse
On the western side of Burton Walks are located the Ireland Building (Physics), the Norman Walter Building (Chemistry), Murray Building (Biology), Pullinger Building (Mathematics) as well as the Hodson Hall, where most school functions and assemblies are held, the Burton Hall, primarily a dining hall, and the Art and Design department, Sports Hall, swimming pool and the Combined Cadet Force's buildings.  A number of houses on this side of the Walks are now owned by the School, including Buckland House, the administrative hub of the School, containing the Headmaster and Deputy Headmasters' offices as well as the general office.  Other houses include Red House, formerly used for music lessons but now largely occupied by the Business Studies, Economics and Politics departments as well as reprographics; Friesland House containing Network Services, and one more houses the Bursary.  Both the Headmaster of the Grammar School and the Headmistress of the High School traditionally reside in properties on the Walks.
The astroturf tennis and hockey pitches are not strictly part of the Grammar School, but are shared with the High School, although a new hockey pitch purely for the Grammar School was opened in January 2019. The Music School (2006), is also another of these shared buildings, it includes a recital hall as well as practice rooms and recording facilities.
In addition to the main campus, the School owns a 70-acre (280,000 m²) site at the nearby village of Quorn, consisting of sports facilities, including rugby, football, cricket pitches and athletics.
The Burton Chapel is located in Loughborough's Parish Church, school services are held in both this chapel and a second chapel located in the School's quadrangle.
There is a public right of way along Burton Walks connecting the council estate of Shelthorpe with Loughborough town centre.
Loughborough Grammar School