Description of development: a) the demolition of the existing rear single-storey extension; b) the construction of a single-storey extension with 72sq.m. of extended floor area to rear of the existing dwelling; c) the construction of two dormer windows at the second-floor level, one to the front and one to the rear; d) internal alterations, elevational modifications and general refurbishment; e) new Garden Room and Store of 25 m² to rear garden; f) associated site works and landscaping.