Apartment building at 8 Hanzas Street, Riga

Project information

To improve the building’s energy efficiency, the works were carried out within the ALTUM support program and in accordance with Cabinet of Ministers Regulation No. 880. Before construction began, a building renovation project and an energy audit were prepared.

Within the project, the following works were completed:

• Insulation of the building’s external walls and plinth, with decorative finishing
• Insulation of the basement ceiling
• Insulation of the attic floor
• Partial replacement of windows and doors
• Renovation of the roof covering
• Installation of a new rainwater drainage system
• Cleaning of ventilation ducts and installation of new ventilation grilles in kitchens and sanitary areas
• Installation of air supply valves in kitchens and sanitary areas
• Insulation of the roof above the apartments
• Cosmetic renovation of the staircases
• Renovation of the building perimeter
• Renovation of the heating and water supply systems
• Installation of lightning protection for the building
• Renovation of outdoor stairs and entrance porches
• Necessary renovation works of the water supply, sewage, and heating system

As a result of the renovation, the building’s heating consumption has decreased from 172 to 58 kWh/m² (2024/2025 heating season), achieving a 56% heat energy saving. The temporary energy certificate rates the building’s heating consumption at 56 kWh/m².

PROJECT COSTS AND FINANCING
Total eligible project costs	483,418.68
ALTUM grant (capital rebate)	235,719.84
Grant / capital rebate amount, %	48.76
Loan	235,719.84
Term (months)	180
Interest rate, %	2.7
Payment per 1 m²/month	1.11