All policies / Buildings / CAPMF_PARTL_RES
Building Regulations Part L — dwellings (successive vintages)
Instrument affecting the Buildings sector, using a standards mechanism; in force since 1991.
About this policy
Part L of the Building Regulations sets energy-performance requirements for new homes and major renovations. Successive editions tightened the standard, up to Nearly Zero Energy Building (NZEB) levels.
Key milestones
- 2019Part L revision introduces Nearly Zero Energy Building (NZEB) performance for new dwellings.
Contextual milestones compiled from official sources. They are not used in the index.
About this type of instrument: performance standards and mandatory labelling
Energy use in durable goods responds weakly to prices because of imperfect information, limited attention and split incentives, for example between landlords and tenants. This is the so-called energy-efficiency gap. Standards remove the least efficient options from the market. Labels reduce search costs for buyers.
- Predictable performance outcomes
- Effective where price responsiveness is weak
- Drive technology diffusion across the EU single market
- Apply mainly to new stock, so effects accrue slowly with turnover
- Gaps between test-cycle and real-world performance
- Rebound effects
- Generally less cost-effective than an equivalent price signal
Measurement in this dataset. Implementation uses OECD indicators for building energy codes, minimum energy-performance standards and labels. Successive editions of each standard are grouped into one policy family. Bindingness is scored 1.0 (mandatory rule). Assumed timing profiles use long ramps reflecting stock turnover.
Year by year
Filled markers use a matched OECD score; hollow markers use assumed timing. Shaded bands show the policy's status. Select a year on the chart or the slider to see how its intensity is built up.
Source records in the EEA registry
All EEA records linked to this policy. Records under the "with additional measures" scenario describe planned extensions; they are retained for traceability but are not treated as historical policy.
| PaM | Name as reported | Status | Scenario | Period | Ex-post kt |
|---|---|---|---|---|---|
| 10 | 2002 Building Regulations - Part L Conservation of Fuel and Energy in Dwellings | Expired | With existing measures | 2003–2008 | 228 |
| 11 | 2008 Building Regulations Part L Conservation of Fuel and Energy in Dwellings | Expired | With existing measures | 2008–2011 | 212 |
| 12 | 2011 Part L Conservation of Fuel and Energy in Dwellings | Expired | With existing measures | 2012–2019 | 92 |
| 54 | 2019 Building Regulations - Residential (With Existing Measures) | Implemented | With existing measures | 2019 | 50 |
| 58 | Major Renovations - Dwellings | Implemented | With existing measures | 2020 | 0 |
| 83 | 2019 Building Regulations - Residential (With Additional Measures) | Planned | With additional measures | 2025 | – |
Data-quality notes
Methodological notes recorded for this series, grouped by theme.
Timing assumptions
- The start year is the first year with a positive OECD score, not a verified enactment date.
- The policy has no reported end date; its status after the reporting date is reconstructed as continuing.
Aggregation warnings
- Several source records (for example successive regulatory editions) are consolidated into one family.
- The family's summed reported saving is used for selection bookkeeping only.
Scoring conventions
- Bindingness is a normative score from the study rubric, not a measure of observed compliance.
- Coverage is an ordinal scope score, not a measured share of activity or emissions.
Selection context
- Policies were selected using recent (2024–2030) assessments, which can introduce retrospective selection bias.
Source conflicts
- A source record reports an expiry that conflicts with the continuing family; the difference is documented.
Policy-specific notes
- Changes in stringency between regulatory editions are not separately measured.
Sources
- OECD. Climate Actions and Policies Measurement Framework (CAPMF) database, Ireland, 1990–2023. https://data-explorer.oecd.org/vis?df[ag]=OECD.ENV.EPI&df[id]=DSD_CAPMF@DF_CAPMF (accessed 25 September 2026)
- OECD. CAPMF database documentation. https://stats.oecd.org/wbos/fileview2.aspx?IDFile=447525d8-ef1f-411b-98ad-56a68d25b99f (accessed 25 September 2026)
- European Environment Agency. Reporting on national policies and measures, Ireland (report 1849), PaMs 10, 11, 12, 54, 58. https://pam.apps.eea.europa.eu/