Decoration construction qualification grades are divided into: first-class qualification, second-class qualification and third-class qualification. Professional contracting scope of architectural decoration engineering: first-class enterprise: can undertake all kinds of indoor and outdoor decoration engineering construction (except building curtain wall engineering). Second-class enterprise: it can undertake indoor and outdoor decoration engineering construction with unit engineering cost of 6.5438+0.2 million yuan or less (except building curtain wall engineering). Third-class enterprises: can undertake the construction of indoor and outdoor decoration projects (except building curtain wall projects) with a unit project cost of 600,000 yuan or less. Second, the architectural decoration engineering design qualification The architectural decoration engineering design and construction qualification is divided into: first-class qualification, second-class qualification and third-class qualification. Scope of business undertaken by architectural decoration engineering design: Enterprises with architectural decoration engineering design and construction qualification can engage in consultation, design, construction and integration of design and construction of various construction projects, and can also undertake general contracting and project management of corresponding projects (except building curtain wall projects); (a) enterprises that have obtained the first-class qualification can undertake all kinds of architectural decoration projects, and the scale is not limited (except building curtain wall projects); (2) Enterprises with Grade II qualification can undertake architectural decoration projects with a single contract amount not higher than120,000 yuan (except for building curtain wall projects); (three) the enterprise that has obtained the third-class qualification can undertake the architectural decoration project with a single contract amount not exceeding 3 million yuan (except the building curtain wall project). Online quotation is for reference only.