The current study aims at establishing comparability mechanisms among Sustainability implemented aspects, which may assess both maturity stage and the adherence to Sustainability Management Systems of Brazilian Civil Construction firms in Building subsector. The analysis of Sustainability Management Systems implemented by Civil Construction firms was performed by using the tool and by carrying out interviews with five firms within the segment. The collected outcomes were treated under intra-case and inter-case methods, which verified the current maturity stage and the adherence to Sustainability Management Systems. The use of a simulator made the determination of the firms final classification possible in relation to the their Sustainability Management Systems efficiency.