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Home/Glossary/Loft Conversion
Planning & Regulations

Loft Conversion

Converting an unused roof space into habitable accommodation - commonly a bedroom, bathroom, or study. Most loft conversions on houses are permitted development under certain volume limits (40 m³ for terraced houses, 50 m³ for detached and semi-detached). Building regulations cover structure, fire egress, insulation, and acoustic separation. A dormer loft conversion adds a box-like projection from the roof slope to provide headroom and floor area.

Related terms

Permitted DevelopmentBuilding RegulationsDormer Window
Local Planning Authority (LPA)Main Contractor

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