The Estonian pilot site seeks to showcase the capabilities of the ONE-STOP-SHOP product within a typical old apartment building block in Tallinn. Given that Estonia has around 14,000 such buildings, with approximately 90% constructed prior 1990s, the findings and business cases derived from these pilot sites hold relevance for a considerable portion of the country’s apartment buildings. The selected blocks for this purpose are Akadeemia tee 4 in the Mustamäe district and Energia 13 in the Kristiine district.

Estonian pilot building Akadeemia tee 4

Constructed in 1965, this pilot apartment building stands as an example of the mass construction era, boasting five floors constructed with prefabricated concrete large panels by the standard project 1-464A-1KE. Situated in Tallinn’s Mustamäe district, the building spans a total net area of 4,500m² and comprises four staircases housing 80 apartments.

Presently, the building’s energy consumption levels are notable, with heating registering at 95 kWh/(m²·year) and electricity at 50 kWh/(m²·year). These figures underscore significant energy usage, presenting ample opportunities for cost-effective savings. Under the auspices of the EBENTO project, initial renovation plans have been drafted. These plans not only prioritize energy efficiency by incorporating prefabricated modular insulation elements but also underscore the importance of commissioning principles. This comprehensive approach ensures the implementation of high-quality standards throughout the renovation process, engaging all stakeholders to guarantee adherence to established norms.

Estonian pilot building Akadeemia tee 4.

Estonian pilot building Energia 13

Situated at Energia tn 13 in Tallinn’s Kristiine district, this property is a three-storey social building with an underground level, boasting a total net area of 1200 m². Originally constructed in 1961, the building is under the ownership of Tallinn City, which has devised a comprehensive plan for its refurbishment.

The overarching objective is to augment the building’s functionality and performance, with a particular focus on enhancing energy efficiency and cultivating a superior indoor climate. Built upon a shallow foundation, the structural integrity of the building is upheld by brick load-bearing walls. Ceilings are composed of prefabricated reinforced concrete panels, while the roofing consists of profiled metal laid atop a wooden framework. Additionally, the external cladding employs profiled sheet metal.

The design documentation for renovation has been finalized, outlining plans to strip exterior finishing layers, retain staircases, and replace the roof structure. Furthermore, the building will undergo a transformation with the installation of new facade panels manufactured off-site using wood. Presently, the Tallinn City Property Department has initiated the procurement process for construction services.

Within the framework of the ENENTO project, initial Owner Project Requirements have been analyzed, with recommendations provided to ensure the application of commissioning principles, thereby guaranteeing the quality of the renovation project.

Estonian pilot building Energia 13. 

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