Masonry; Advisory services relating to building demolition; Advisory services relating to the construction of buildings; Basement waterproofing; Brick paving services; Bricklaying; Building construction, remodeling and repair; Concrete leveling services; Concrete pouring and forming for buildings and other commercial or public concrete structures; Construction and installation of masonry walls and structures; Construction consultancy; Construction of civil engineering structures using concrete; Consulting services for repair and restoration of masonry walls and structures; Consulting services for repair and restoration of historic buildings and structures; Consulting services for the construction and installation of masonry walls and structures; Foundation contractor services; General construction contracting; House and building demolition; Installation services of building scaffolds, working and building platforms; Installation, repair and replacement of brick, stone, and concrete staircases, patios, walkways, driveways, retaining walls, decorative walls, garden walls, elevator shafts, outdoor kitchens, building foundations, chimneys, fireplaces, traffic coatings, building veneers, precast concrete wall forms, precast concrete slabs, lally columns, lintels, structural beams, devising walls, and roofs; Maintenance and/or repair of brick, stone, and concrete staircases, patios, walkways, driveways, retaining walls, decorative walls, garden walls, elevator shafts, outdoor kitchens, building foundations, chimneys, fireplaces, traffic coatings, building veneers, precast concrete wall forms, precast concrete slabs, lally columns, lintels, structural beams, devising walls, and roofs; Maintenance of masonry walls and structures; Natural stone and tile restoration services; Renovation and restoration of buildings; Repair and maintenance of building scaffolds, working and building platforms; Repair of masonry walls and structures; Restoration of masonry walls and structures; Scaffolding erection; Scaffolding repair