Erect first floor extension with bay window to front to form additional floor to existing dwelling, recessed balcony to front, dormers and rooflights to side elevations to form habitable accommodation in roof and alter elevations (variation of plans approved under condition 2, variation of materials under condition 3 and variation of obscure glazing requirement under condition 5 attached to permission reference no. 20/01834/FULH dated 23/12/2020)