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Addressing housing shortage through energy and space-efficient retrofitting: The case study of a Swedish Single-Family house
Linnaeus University, Faculty of Technology, Department of Built Environment and Energy Technology. (Sustainable Built Environment)ORCID iD: 0000-0001-6818-4959
Linnaeus University, Faculty of Technology, Department of Built Environment and Energy Technology. (Sustainable Built Environment)ORCID iD: 0000-0003-4405-1056
Linnaeus University, Faculty of Technology, Department of Built Environment and Energy Technology. (Sustainable Built Environment)ORCID iD: 0000-0003-0189-474x
2022 (English)In: IOP Conference Series: Earth and Environmental Science, Bristol, United Kingdom: Institute of Physics Publishing (IOPP), 2022, Vol. 1085, article id 012038Conference paper, Published paper (Refereed)
Sustainable development
SDG 3: Ensure healthy lives and promote well-being for all at all ages, SDG 7: Ensure access to affordable, reliable, sustainable and modern energy for all, SDG 9: Build resilient infrastructure, promote inclusive and sustainable industrialization, and foster innovation, SDG 11: Make cities and human settlements inclusive, safe, resilient, and sustainable, SDG 13: Take urgent action to combat climate change and its impacts by regulating emissions and promoting developments in renewable energy
Abstract [en]

Sweden's shortage of affordable housing has been evolving into a major in recent years. A 2021 report by the Swedish National Board of Housing, Building, and Planning (Boverket) stated a need for 60,000 new homes by 2030. In addition, the Swedish building stock is responsible for 39% of the country's total energy consumption and 21% of its greenhouse gas emissions. Therefore, solutions to address the housing crisis should go hand in hand with the need for increased building retrofits to meet Sweden's 2045 energy and climate targets. In this context, re-densification of the existing building stock is a possible option. This study examines possible space- and energy-efficient options for densifying the housing supply in Sweden's existing single-family home (SFH) segment. Using a case study in Kronoberg, Sweden, occupied by an elderly household, options for converting the unused space into new additional dwelling units (ADUs) and reducing per capita living space are explored. Most SFHs in Sweden are old, in poor condition, and in urgent need of structural and energy retrofits. In addition, about one-third of homeowners are over 60 years old and report living in homes that are too large compared to their needs - an excellent environment to study the proposed intervention. Revenues from renting the newly created ADUs suggest that the proposal is financially attractive because it capitalizes on the high initial investment costs of energy retrofits. In addition, spatial interventions combined with energy-efficient measures result in a 40 percent lower energy use and environmental impact per capita compared to energy retrofits alone due to a reduction in per capita living space. Finally, the study aims to initiate a discussion on sufficiency, innovative energy regulations, and housing policy tools needed to transition to the low-energy single-family housing stock

Place, publisher, year, edition, pages
Bristol, United Kingdom: Institute of Physics Publishing (IOPP), 2022. Vol. 1085, article id 012038
Series
IOP Conference Series: Earth and Environmental Science, ISSN 1755-1307, E-ISSN 1755-1315 ; 1085
Keywords [en]
densification, energy efficiency, sustainable transition, single-family housing, space efficient design, sufficiency, life-cycle assessment, life-cycle cost, accessory-dwelling units.
National Category
Building Technologies Environmental Analysis and Construction Information Technology Architecture
Research subject
Technology (byts ev till Engineering), Sustainable Built Environment
Identifiers
URN: urn:nbn:se:lnu:diva-116875DOI: 10.1088/1755-1315/1085/1/012038Scopus ID: 2-s2.0-85140077231OAI: oai:DiVA.org:lnu-116875DiVA, id: diva2:1703995
Conference
SBE22Delft - Innovations for the Urban Energy Transition: Preparing for the European Renovation Wave 11/11/2022-13/11/2022 Delft, Netherlands
Projects
Scaling up energy renovation through smart design and one-stop-shop business modelSustainable housing for strong communities (Stronghouse)
Funder
Interreg North Sea Region, J-No 38-2-15-19Knowledge Foundation, Hög-20Available from: 2022-10-17 Created: 2022-10-17 Last updated: 2022-11-16Bibliographically approved

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Sula, MigenaMahapatra, KrushnaMainali, Brijesh

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