This project seeks to improve the regulation for the construction sector at the regional level in Latin America. The proposed methodology will comprise three highly inter-related components will be delivered jointly: (I) Simplification of the process to obtain construction permits (reduction of cost, time, and number of procedures) at the national level, (II) Develop Green Building Codes (national or subnational level depending on the country) to promote minimum mandatory sustainable building standards in commercial and residential buildings, and (III) Promote inter and intra-regional knowledge sharing of best practices in the regulation of the construction sector. Component I is composed of three phases: (i). Mapping and diagnostic; (ii). Proposal development on simplification procedures, (iii). Implementation of reforms. Component II comprises eight phases: (i) Construction Market Stock Analysis, (ii) Analysis of energy and water consumption, (iii) Sensitivity analysis (potential reductions in energy and water consumption), (iv)Analysis of construction costs including sustainability criteria, (v)Incentives Proposal, (vi) Regulatory proposal incorporating sensitivity and cost analysis, (vii) Lobbying with key stakeholder and (viii) Technical assistance in implementing the new regulations. Component III comprises: 1. Regional Networking & Knowledge Sharing Events for government officials and private sector representatives; 2. Collection and systematization of best practices.