37 Construction of buildings and parts of buildings; construction of building structures; construction of prefabricated, portable and/or relocatable buildings; construction of modular buildings; construction of buildings; installation of buildings and parts of buildings; installation of building structures; installation of prefabricated, portable and/or relocatable buildings; installation of modular buildings; installation of buildings; cleaning, repair and maintenance of buildings and parts of buildings; cleaning, repair and maintenance of building structures; cleaning, repair and maintenance of prefabricated, portable and/or relocatable buildings; cleaning, repair and maintenance of modular buildings; cleaning, repair and maintenance of buildings; relocation of buildings; relocation of prefabricated, portable and/or relocatable buildings; relocation of modular buildings; project management services relating to the construction, installation, cleaning, repair and maintenance and relocation of buildings, modular buildings, prefabricated, portable and/or relocatable buildings; information, advisory and consultancy services in respect of all of the aforesaid