Resource overview (Publisher & authors)
This resource, “Housing Insights – Office-to-Residential Conversions: Case studies from Tuath Housing”, is published by The Housing Agency (Ireland), a government body that works with the Department of Housing, Local Government and Heritage, local authorities and Approved Housing Bodies to support evidence-based housing policy and delivery. It is written by Nicola Turley (Policy Officer) and edited by Roslyn Molloy (Head of Policy, Practice and Communications). The paper presents two Irish case studies showing how vacant office buildings were converted into social housing, with a focus on delivery steps, costs, and environmental impacts.
Why office-to-residential conversions are being considered
The paper links conversions to two parallel pressures: rising commercial vacancy and growing housing need. GeoDirectory recorded 29,798 vacant commercial units across Ireland in June 2023, and the national commercial vacancy rate reached a 10-year high of 14.1% (Dublin: 13.1%). The context also includes changing work patterns: Ireland’s CSO reported that remote work rose from 23% of people in employment (pre-pandemic) to 65% working remotely all or some of the time by November 2021, affecting demand for office space.
Housing need and policy context
Housing need is quantified using the Summary of Social Housing Assessments 2022, which reported 57,842 households qualified for and in need of social housing support as of 1 November 2022. Dublin City had the largest number on the waiting list (11,793 households), and Cork City reported 3,886 qualified households. The work is positioned within Ireland’s Housing for All programme (2021), particularly its emphasis on addressing vacancy and using existing stock efficiently, and notes The Housing Agency’s creation of a Property Optimisation Unit to support this agenda.
Planning rules and sustainability rationale
The report highlights regulatory changes that make conversions more feasible. The Planning and Development (Amendment) Regulations 2022 (updating the 2018 rules) extend relevant exemptions to 31 December 2025 and adjust external-fabric requirements so that 50% of the external fabric must be retained. Eligibility is limited to buildings completed by 8 February 2018, steering activity toward older, vacant properties. On climate impacts, the paper notes that housing and construction are significant emitters in Ireland: 37% of national carbon emissions are attributed to the construction sector (23% operational emissions and 14% embodied carbon).
The two Tuath Housing conversion projects (Dublin and Cork)
Tuath Housing delivered two office-to-residential schemes: 86 social homes at the Plaza Building in Park West Business Park, Dublin 12, and 35 social homes at Springville House in Cork City—121 homes in total from two previously vacant buildings. Park West involved converting two four-storey office blocks (vacant for over 20 years) into a five-storey development with 86 apartments, financed by the Department of Housing, Local Government and Heritage and a loan from AIB’s Social Investment Fund. Springville House, a 1960s office building vacant for over 10 years, was converted through collaboration between Cork City Council, MMD Construction, and Tuath Housing.
Delivery approach: collaboration, design solutions, and tenant needs
The paper identifies three actions as central: close collaboration with local authorities, innovative responses to planning constraints, and designing around residential tenant needs. Examples include adding a penthouse floor at Park West to increase density, creating internal “garden rooms” to address private open-space requirements, upgrading staircases and entrance doors, replacing/altering windows for ventilation and insulation, and refurbishing basement space at Springville for refuse and bicycle storage. Tenant-oriented measures included soundproofing membranes, shifting to heating systems that enable individual metering and improved energy efficiency, and providing space for post-boxes, bin and bicycle storage, plus community amenities (e.g., a community space and planned “Internet Café Corner” at Park West).
Costs, occupancy, and energy performance outcomes
The paper compares conversion costs to typical new-build benchmarks. It cites an estimate that a mid-range suburban two-bed apartment can exceed €460k, and that the Society of Chartered Surveyors Ireland reported Dublin medium-rise apartment development costs ranging from €411k to €619k. Against this context, Park West units averaged €309k per unit and Springville units averaged €353k per unit. Park West is reported as fully occupied, housing more than 200 people previously on the Dublin City Council waiting list (34 one-bedroom and 52 two-bedroom apartments). Springville houses 35 social tenants aged 60+ who rightsized (including apartments and four one-bedroom single-storey houses on the site). Building energy ratings improved: Park West achieved A2–B2 (34% A-rated, 66% B-rated), and Springville achieved twenty A2-rated and fifteen A3-rated units.
Carbon impacts and wider relevance
A whole-life carbon analysis for Park West compared the conversion with (a) demolition and rebuild and (b) a comparable new build. Reported results were a 73% reduction in embodied carbon versus demolition/rebuild and a 62% embodied carbon reduction versus a comparable new build. The paper also situates the approach internationally, referencing incentive programmes such as Calgary’s grants (up to $75 per square foot, up to $15 million per project) and New York City initiatives, and argues that central office locations can be attractive for housing. It notes research estimating that 76% of office stock in 11 European countries could be at risk of obsolescence by 2030, framing conversions as a potential pathway to reuse vacant buildings while contributing to housing supply and sustainability goals.