Every rule your project must meet, found for you.
Search Northern Ireland’s planning and building-control guidance, ask a question in plain English, or generate a project compliance checklist — every answer cited to the source.
Working to a specific project? Generate a compliance checklist →
Answers, with citations
Ask in plain English and get an answer that links to the exact source clause — never an unsourced guess.
Scoped to your council
Overlay a council's local development plan on the Northern Ireland-wide regulations and policy.
Project compliance checklist
Characterise a project and get the requirements that apply, grouped by work area. Try it →
The library
Search the source guidance
2 results · filtered
Change of energy status for previously exempt conservatories and porches
3.29NI-wide·Technical Booklet F1 Conservation of Fuel and Power in Dwellings
Where a previously exempt conservatory or porch is no longer exempt and energy is used to condition the indoor climate this is a change of energy status. This is the case where – (a) the thermal perfo
dwellingenergyexternal-spacePerformance standards for previously exempt conservatories and porches with changed energy status
3.30NI-wide·Technical Booklet F1 Conservation of Fuel and Power in Dwellings
In such cases, the previously exempt conservatory or porch should have – (a) controlled fittings whose performance is no worse than that given in Table 3.1; (b) thermal elements that have U-values no
dwellingenergyexternal-space