Risk Notes

• ▸Labour hours are based on standard industry productivity rates and assume competent, uninterrupted working. They exclude allowances for adverse weather, material-delivery delays, restricted access beyond that noted, and below-standard productivity.
• ▸The programme assumes a standard working week of 40 hours per operative (Monday to Friday; weekends and public holidays excluded) with a gang of 2. A 27% buffer and fixed curing / drying periods are already included for typical real-world delays.
• ▸This is a cost estimate, not a fixed-price quotation or a guaranteed programme. Actual hours, duration and cost may vary with site conditions, design development and specification changes.
• ▸Inter-war (1920-1944): early cavity walls with galvanised wall ties prone to corrosion. Suspended timber floors common; ventilation under-floor should be checked. Original window frames often single-glazed.
• ▸Detached: no party wall constraints. Good site access assumed.
• ▸Sandy gravel: good free-draining ground. Standard 1.0m depth sufficient.
• ▸Works within Permitted Development. Confirm PD not removed by Article 4. Consider Lawful Development Certificate.
• ▸Engineered timber floor in a bathroom: not waterproof and not the manufacturer-recommended floor finish for wet rooms. Steam and standing water can damage the wear layer over time; tile, safety vinyl or glue-down LVT are the standard recommendations. Confirm the homeowner explicitly chose this finish and is comfortable with the maintenance / warranty implications.