UK construction starts remained 18% below their level a year earlier in Glenigan’s October 2026 index, despite civil engineering activity increasing sharply over the preceding three months. Such an uneven pipeline leaves little room for defects, delays and design changes that could have been resolved before work began.
The new issue of IN Site examines the decisions behind those avoidable costs, drawing together construction, ground engineering, product specification and the operation of buildings.
In commercial interiors, a component can match its digital model yet prove difficult to manufacture, transport or install. JSJ UK describes how early specialist involvement allows tolerances, fixing methods and interfaces with other trades to be resolved while drawings can still be revised. Groundforce Shorco addresses comparable constraints in city centres, where excavation support and sequencing must account for underground infrastructure, neighbouring buildings and restricted access.
Existing buildings present a related problem when refurbishment changes their loading. Additional plant, mezzanine floors and rooftop installations can place new demands on foundations, while drought and variable ground conditions increase the need to understand structural movement before investing in upgrades.
Specification decisions carry their own risks. Modifying a tested building system can change design liability and affect the evidence supporting its performance. BS 40104, introduced in 2025, calls for more rigorous assessment of domestic buildings before retrofit, including defects, ventilation, occupancy and energy use.
The consequences extend beyond construction. Ofgem’s heat network framework places new responsibilities on owners and operators, with existing networks working towards authorisation requirements in January 2027. Meanwhile, better insulation and airtightness are reducing space heating demand, increasing the relative importance of domestic hot water and the scope for wastewater heat recovery.
Early design and investigation can help projects remain buildable, compliant and economical to operate.
