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Garage conversion

Is building regulations approval needed for a garage conversion?

The conversion of a garage, or part of a garage, into habitable space will normally require approval under the Building Regulations.

General guidance on the performance expected of materials and building work in order to comply with the building regulations and practical examples and solutions on how to achieve compliance for some of the more common building situations can be found in the approved documents section.

Approved documents

Build Aviator's estimating service can help you plan your project by providing an accurate cost of the proposed changes. Find out more1.

Once costs have been estimated, the quick quote finance calculator2 from Selina Advance can take all of the hard work out of searching and securing the funds needed for your project.

Further Information 

The following pages give an indication of some of the elements normally required to satisfy the requirements of the Regulations when converting a garage.

These common work sections give an indication of several other elements normally required to satisfy the requirements of the Regulations when converting a garage:

A planning consultant may help with the smooth running of your garage conversion project. To find an accurate consultancy quote, explore Studio Charrette's calculators9.

Find a Trade Professional

Use our partner directories from CIAT, FMB, RIBA, or RTPI to find an chartered architectural technologist, builder, architect or planning consultant to help with your project or development.

Find a trade professional


Useful links

Make an application Project estimating service


Planning consultancy calculator Financing your project
    1. https://www.planningportal.co.uk/permission/home-improvement/estimating-service
    2. https://www.planningportal.co.uk/permission/home-improvement/quick-quote-finance-calculator
    3. https://www.planningportal.co.uk/permission/common-projects/doors-and-windows/building-regulations
    4. https://www.planningportal.co.uk/permission/common-projects/drains-and-sewers/building-regulations
    5. https://www.planningportal.co.uk/permission/common-projects/electrics/electric-vehicle-charging-points
    6. https://www.planningportal.co.uk/permission/common-projects/external-walls/building-regulations
    7. https://www.planningportal.co.uk/permission/common-projects/internal-walls/what-building-regulations-apply-to-internal-walls
    8. https://www.planningportal.co.uk/permission/common-projects/roof/building-regulations-work-to-an-existing-roof
    9. https://www.planningportal.co.uk/permission/home-improvement/planning-consultancy-calculator

    The Planning Portal is delivered by PortalPlanQuest Limited which is a joint venture between TerraQuest Solutions Limited and the Department for Levelling Up, Housing & Communities. All content © 2022 Planning Portal.

    The Planning Portal is delivered by PortalPlanQuest Limited which is a joint venture between TerraQuest Solutions Limited and the Department for Levelling Up, Housing & Communities. All content © 2022 Planning Portal.