Quick list of things you need a building regulations for

Building Regulations applications are needed for most construction projects: 

New buildings 

• All new buildings except agricultural buildings 
• Garages that are not fully detached and under 30 square metres 

Extensions 

• All extensions no matter how small 
• Some conservatories and porches (many are exempt but these must be separated from the house by doors and can’t be heated) 
• Roof extensions, balconies, and roof terraces 
• Basements and basement extensions 

Which projects are exempt? Find out here  

Conversions 

• All loft conversions, roof extensions, balconies, and roof terraces 
• All garage conversions 
• Barn conversions 
• Subdividing a house into flats 
• Converting flats back into a house 

Alterations 

• Creating a ‘granny annex’ 
• Creating a new or ensuite bathroom or cloakroom 
• Installing a new kitchen 
• Taking out a loadbearing wall – you need to ask a structural engineer to confirm that your wall isn’t supporting the walls, floors or roof above it 
• Taking out a non-loadbearing wall if it separates a room from your hall, staircase or landing  
• New installation or replacement of a heating system or any boiler, regardless of fuel type 
• New installation or replacement of an oil tank 
• Installation of a new bathroom if existing plumbing is altered or if new plumbing is installed 
• Installation of fixed air conditioning systems 
• Installation of additional radiators to some existing heating systems 
• Replacement fuse boxes, any new electrical installation connected to the fuse box, and alterations to electrical installations in bathrooms around the bath or shower  
• Replacement window and door units 
• Installing roof lights 
• Making windows or doors wider or taller 
• Replacement of roof coverings on pitched and flat roofs even if this is just like for like 
• Replacing your floor 

Some work can be carried out without informing Building Control if you're using a registered installer from a competent persons scheme, including the following: 

• Most repairs, replacements and maintenance work (except replacements of combustion appliances, oil tanks, electrical fuse boxes or glazing units which do need to be notified) 
• Additional power points or lighting points or any other alterations to existing circuits (except around baths and showers) 
• Like for like replacements of baths, toilets, windows, basins or sinks. 

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