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Architect drawings for extension cost
How much do architect drawings for an extension cost? Can I get away with not getting them or is it really something the builders need?
Expert Trade Answers
"Yes you will need a drawing for the extension and the price can start from £500 plus dependant on size and complexity of the extentions"
Answered on 12th Dec 2025 - Member since Aug 2025 -
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"• Drawings usually cost £1,000–£2,500 for planning, and £3,000–£6,000+ for full building-regs drawings.
• An architect isn’t legally required, but proper drawings are.
• Builders need clear, scaled plans to price and build correctly — rough sketches aren’t enough.
• You can save money by using a drafter or architectural technologist instead of a full architect.
In short: you may skip the architect, but you can’t skip the drawings."
• An architect isn’t legally required, but proper drawings are.
• Builders need clear, scaled plans to price and build correctly — rough sketches aren’t enough.
• You can save money by using a drafter or architectural technologist instead of a full architect.
In short: you may skip the architect, but you can’t skip the drawings."
Answered on 12th Dec 2025 - Member since Dec 2025 -
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