Renovation of existing detached 1970s building with replacement of UPVC windows and conversion of garage to studio/bedroom

To replan and renovate the North bedroom wing with improved dressing and en suite. No changes to historic fabric, all beams retained. Only modern plasterboard walls to be moved. - Strip render and repair plinth. Cement render removed at low level to re expose plinth to be breathable. Like for like brick repair with lime mortar where required. To building perimeter. - Replace modern 1980?s windows with flush casement slimlite double glazed units of appropriate design. - Reinstall existing terrace with new steps from terrace to garden level