Start with the building's condition
Assess the roof, building envelope, heating and consumption before deciding the work programme. The cantonal building energy certificate assesses envelope efficiency, overall energy efficiency and direct CO2 emissions. CECB Plus adds an advisory report with renovation options; it does not replace construction drawings.
Coordinate roofing, insulation and photovoltaics
If roof renewal is planned, compare coordinated work with separate projects. Shared scaffolding and site organisation may reduce some costs, without guaranteeing a percentage saving. Specify structure, waterproofing, interfaces between contractors and responsibilities.
Size the heating system for future demand
Heat pump capacity must account for heat losses after the planned work. Compare current and future demand. Size the photovoltaic system for the roof and expected electricity profile, including heating and transport; annual production equal to consumption does not guarantee winter autonomy.
Check grants and deadlines before ordering
Buildings Programme conditions, CECB Plus grants and possible bonuses depend on the canton and measure. Submit the Buildings Programme application before work starts and check whether a prior decision is required. Pronovo procedures for photovoltaics follow a different timetable depending on the system type.
Prepare tax evidence
Ask your tax authority to confirm eligible net costs after deducting grants, supporting documents and any carry-forward rules. Compare the work timetable with the building's technical needs; an advertised tax benefit alone does not justify a poor construction sequence.