Building construction, repair, and installation services being construction, maintenance and repair of sport and recreational facilities; installation, maintenance and repair of sporting surfaces; services of undertakings specialising in the field of construction including those of plumbers, painters or roofers; services auxiliary to construction services such as inspection of construction plans; repair services such as those in the fields of electricity, fencing, artificial and natural surfaces, furniture, instruments and tools; and services of maintenance for preserving objects and items in their original condition