EMT Blue-Green Factor Calculator

About this tool

The EMT Blue-Green Factor Calculator is adapted for the climatic, ecological, and regulatory context of Eastern Macedonia and Thrace. It is based on the internationally established Blue-Green Factor methodology developed in the iWater EU project (2015–2018). Submit the result score card together with your site plan and landscaping drawings as part of your building permit application. Developed under the RESIST project. Grant agreement ID: 101093968.

1. Building Site

DateBuilding Permit NumberRegional UnitMunicipalityMunicipal District / NeighbourhoodBlock and Plot Reference

Plot Address

2. Applicant

Applicant Full NameMailing AddressEmail AddressArchitect / Engineer in Charge

3. Key Area Inputs

Warning: Plot area not entered — cannot calculate / Building footprint not entered — cannot calculate

Total Plot Area (m²)Building Footprint Area (m²)

4. Regulatory Limits

Required stormwater retention (m³ per 100 m² impermeable)Required minimum permeable surface (% of plot)Blue-Green Factor target level

Regulatory limits apply in accordance with Presidential Decrees on Urban Planning, the General Building Regulation (ΓΟΚ / ΝΟΚ), and the approved Local Spatial Plans of each municipality in the EMT Region.