Overview of the Warsaw Green Building Standard
The Warsaw Green Building Standard (WGBS) is a comprehensive assessment system developed by the Capital City of Warsaw in collaboration with the Warsaw Branch of the Association of Polish Architects (OW SARP) and the “LeadAir – Urban Strategies for the Future” Energy Forum. Authored by Justyna Biernacka, Piotr Jurkiewicz, Jerzy Kwiatkowski, Anna Tofiluk, and Kinga Zinowiec‑Cieplik, the document aims to guide urban investment projects toward higher climate resilience, energy efficiency, and ecological design. It supports the city’s Climate Action Plan and the Warsaw Climate Panel’s recommendation to reduce greenhouse‑gas emissions from buildings, which account for the largest share of the city’s emissions.
Core Areas of Assessment
The standard is organized into six assessment areas: (1) Greenery and Plot Development, (2) Water Management, (3) Energy Efficiency, (4) Sustainable Mobility, (5) Circular‑Economy Elements and Building Materials, and (6) Health, Comfort, and Safety. Each area contains mandatory requirements and a set of selectable criteria, with at least two chosen criteria required for a positive assessment. Mandatory elements include the Blue‑Green Infrastructure Indicator, Plot Rainwater Management, Primary Energy Demand, and Mechanical Ventilation with Energy Recovery for educational buildings.
Water Management Requirements
The water‑management section mandates on‑site handling of rainwater and snowmelt (Plot Rainwater Management). Projects must adopt at least two additional measures such as nature‑based retention solutions, rainwater reuse in building installations, grey‑water utilisation, or retention roofs. The goal is to minimise runoff, increase infiltration, and enable water reuse for irrigation or sanitary purposes.
Energy Efficiency Expectations
Primary Energy Demand must be reduced by at least 10 % compared with the maximum permissible value for new buildings, with a stricter option of achieving an A‑class energy performance. Additional optional criteria include zero‑emission energy sources, renewable energy share of at least 50 % of final energy demand, and monitoring of utility consumption through Building Management Systems meeting PN‑EN 15232 class B or higher.
Sustainable Mobility Measures
Projects are required to provide at least two mobility‑related solutions, such as electric‑vehicle charging points, bicycle parking (minimum 15 % of total users or two spaces per residential unit), proximity to public transport (≤ 417 m to bus/tram stops, ≤ 833 m to rail/metro), vehicle‑sharing spaces, cyclist amenities, pedestrian‑priority designs, or green‑roofed parking.
Circular‑Economy and Material Standards
The circular‑economy area focuses on quantifying Global Warming Potential, using Environmental Product Declarations (minimum ten verified EPDs across material categories), conducting quality testing of building envelopes, performing thermal‑bridge analyses, providing overheating protection, and selecting low‑carbon or reused materials. Prefabricated, disassemblable components are encouraged to facilitate future reuse.
Health, Comfort, and Safety Provisions
For educational buildings, mechanical ventilation with heat recovery and CO₂‑based airflow control is mandatory. Additional optional criteria cover ventilation air control, acoustic performance (minimum class AQ‑2 for residential buildings), user‑controlled indoor climate, light‑pollution mitigation, life‑cycle cost analysis, fencing policies, lighting control systems (e.g., DALI), public facility openness, and bird‑collision prevention on glass surfaces.
Key Data and Facts
- PDF size: 1.3 MB; public status.
- Publication year: 2025 (final edition released March 2025).
- Authors are senior architects and urban planners employed by the city’s planning and environmental departments.
- The standard aligns with EU taxonomy criteria for climate mitigation, circular economy, and water protection.
- Minimum Blue‑Green Infrastructure Index is calculated as 1.20 × required biologically active area; a sample plot (1 500 m²) achieved a BGII of 1 081 m, meeting the threshold of 1 080 m.
- Water‑management calculations illustrate surface‑type indices (STI) ranging from 0.0 (impermeable) to 1.2 (multi‑layer native soil vegetation).
Access and Further Information
The full standard is available on the Warsaw Municipal website (eko.um.warszawa.pl) and can be downloaded directly via the provided link. Additional resources, including the project evaluation sheet template and detailed technical annexes, support practitioners in applying the WGBS across new urban developments throughout Europe.