Forecasting what the built environment will need is moving from counting new projects to reading the whole building stock. Glenigan has launched Building Materials Forecast, a new subscription service that, as PBC Today reported on 3 November 2026, combines construction activity, building stock, replacement cycles and renovation demand to forecast UK demand for products and materials. Its forecasting methodology has been applied across European markets for more than 30 years. For Irish building and architecture leaders, who trade across the border and face their own retrofit wave, the logic travels well.

The launch is a sound signal for the sector because new-build starts alone now mislead. Glenigan's October index shows UK residential starts down 33% year on year, yet civil engineering starts are up 43%. Hubexo's vice president of construction market intelligence says knowing what will be built is only part of the picture. Three points follow for Irish firms: demand now sits in existing stock, price volatility rewards earlier planning, and specification data is a strategic asset.

Ireland's stock-led demand is substantial. The National Retrofit Plan targets the equivalent of 500,000 homes at BER B2 and 400,000 heat pumps in existing homes by 2030. SEAI data reported by the Irish Examiner shows 95,319 homes upgraded by the end of July 2026, leaving roughly 405,000 to do, with 19,583 heat pumps installed since 2020. For residential development and retrofit contractors alike, that is a long, policy-backed demand curve for insulation, glazing and heating products that no new-build forecast would capture.

Cost volatility adds urgency. Wholesale construction product prices rose 3.1% year on year in June and wholesale electricity prices rose 42.2%, while CIF found 79% of firms reporting higher raw material costs in Q4 2025. The Central Bank reports that planning to completion now averages four years. Where timelines are that long, firms that anticipate product demand and secure supply early protect margins and programme on sustainable buildings and retrofit schemes.

Three actions are specific and attainable. First, build a stock-led demand view by mapping pipeline projects against retrofit targets and replacement cycles, using CSO and SEAI data alongside forecasts such as Glenigan's for UK-facing work. Second, agree framework supply for insulation, glazing and heat pumps with trusted suppliers before demand peaks. Third, standardise product choices in architectural design libraries for retrofit packages, because specification data is one of the inputs Glenigan uses and shapes what suppliers stock.

Glenigan's launch confirms that the smartest market intelligence now starts with what is already built. With UK civil engineering starts rising and Ireland needing roughly 405,000 more B2 retrofits by 2030, demand is real even where new-build is soft. Irish building and architecture firms that plan around stock, replacement and renovation will specify earlier, buy smarter and be better placed as both markets recover.