Here’s an AI response for you Op
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The homeowners have the final say. As the property owners, you retain complete authority over your home. If you want a door closed for privacy, security, or to contain dust, the builder must comply, as their access is conditional on your consent and the terms of your contract. 1, 2]
While the homeowner makes the ultimate rule, builders often have valid practical reasons for requesting open doors:
Airflow and ventilation: When using power tools, paints, adhesives, or plaster, building regulations often require adequate ventilation for safety.
Cordoning off zones: Keeping specific doors open allows them to isolate active, hazardous work areas from the rest of the house.
Cable routing: Open doors provide a safe path for extension leads, dust extraction hoses, or water pipes without the risk of the cables being pinched or damaged. 1]
How to Move Forward
Understand the Risk: If the door is left open, it is your property. However, if a builder leaves a door open and someone is injured, or if your home is burgled because the door was insecure, liability can be complicated.
Consult Your Contract: Review your agreement or Construction Phase Plan to see if access rules and site boundaries were specifically outlined.
Establish a Compromise: If ventilation or cable routing is the issue, ask the builder to use Temporary Door Screens that allow air to pass through while keeping the room physically sealed, or ask them to secure the house completely when they leave for the day. 1, 2, 3, 4]
If the builder is entirely unreasonable, you can use the Citizens Advice or Trading Standards services for guidance on how to manage disputes and enforce proper conduct on your property