The changes in legislation that emerged after the last edition (5th) and especially after the publication of Law 4759/2020 "Modernization of Spatial and Urban Planning Legislation and other provisions", and its amendments, as well as the significant changes with Law 4819/2021, led us to the release of the new 6th edition of the New Building Regulation, as it has been amended and is in force today. This is the most complete edition, an essential practical aid for all engineers, updated, with analysis, commentary, and interpretation by paragraph. Specifically, it includes: • Updates with all the latest amendments. • Presentation of relevant decisions, interpretative circulars, and technical guidelines, by paragraph. • Explanatory comments, tables, and diagrams. • Summary table for construction – coverage – volume. • Comparison with previous provisions. • Summary table for required permits – approvals per case (Article 4). • Complete information on licensing procedures and required documentation per case. Additionally, it contains: • Analysis – Interpretation & Codification by article of Law 4067/2012: "New Building Regulation", as it has been amended and is in force today based on: Laws 4117/2013, 4123/2013, 4178/2013, 4223/2013, 4258/2014, 4280/2014, 4296/2014, 4315/2014, 4447/2016, 4467/2017, 4495/2017, 4501/2017, 4508/2017, 4512/2018, 4513/2018, 4546/2018, 4549/2018, 4602/2019, 4635/2019, 4643/2019, 4663/2020, 4664/2020, 4674/2020, 4676/2020, 4684/2020, 4685/2020, 4710/2020, 4722/2020, 4759/2020, 4782/2021, 4787/2021, 4796/2021, 4819/2021. • Presentation of relevant interpretative circulars, technical guidelines, and documents issued to date, by paragraph. • Explanatory comments, tables, and diagrams. • Scope of application by article and paragraph. • Comparison with previous provisions. • Summary table for required permits – approvals per case. • Summary table for construction – coverage – volume: Which elements are included or not in construction, coverage, and volume, under what conditions and specifications. • Required documentation per case. • Accessibility for people with disabilities and those with mobility issues: Requirements for new and existing buildings – specifications. • Interventions in existing buildings, change of use, energy upgrade. • Green roofs – incentives for bioclimatic buildings