Building regulation fees and charges - Table B

Standard charges for:  

  • certain small buildings, extensions, and alterations to dwellings.

Where work comprises more than 1 domestic extension the total internal floor areas of all the extensions shown on the application may be added together to determine the relevant charge. Please note however, the area of loft conversions may not be aggregated to an extension, but a 50% discount can be applied. If the extension(s) exceed 100m2 or 3 storeys in height, then Table D applies (subject to a minimum plan charge equal to a minimum build cost of £100,000).

Category 1: Extensions to dwellings 

Building notice

Building notice fees table

Floor area

Basic charge

Charge including VAT

Internal floor area not exceeding 5m2 

£325

£390

Internal floor area over 5m2 but not exceeding 40m2 

£400

£480

Internal floor area over 40m2 but not exceeding 70m2 

£500

£600

Internal floor area over 70m2 but not exceeding 100m2 

£650

£780

Full plans appliction

Full plans application fees table

Floor Area 

Plan deposit charge

Inspection Charge

Total charge

Basic charge

Inc. VAT

Basic charge 

Inc. VAT

Basic charge 

Inc. VAT

Internal floor area not exceeding 5m2 

£125

£150

£200

£240

£325

£390

Internal floor area over 5m2 but not exceeding 40m2 

£150

£180

£250

£300

£400

£480

Internal floor area over 40m2 but not exceeding 70m2 

£150

£180

£350

£420

£500

£600

Internal floor area over 70m2 but not exceeding 100m2 

£150

£180

£500

£600

£650

£780

Category 2: Garages and carports 

Building notice

Building notice fees table

Erection or extension of detached or attached building or an extension to a dwelling

Basic charge

Charge including VAT

which consists of a garage, carport, or both, having a floor area not exceeding 60m² in total and is intended to be used in common with an existing building and the conversion of an attached garage into a habitable room 

£300

£360

Full plans application 

Full plans application fees table

Erection or extension of detached or attached building or an extension to a dwelling

Plan deposit charge

Inspection Charge

Total charge

Basic charge

Inc. VAT

Basic charge 

Inc. VAT

Basic charge 

Inc. VAT

which consists of a garage, carport, or both, having a floor area not exceeding 60m² in total and is intended to be used in common with an existing building and the conversion of an attached garage into a habitable room 

£100

£120

£200

£240

£300

£360

Category 3: Loft Conversions and dormers 

Building notice

Building notice fees table

Formation of a room in roof space, including means of access thereto. Fees for lofts greater than 40m² are to be based on the cost of work. The fee cannot be less than shown below

Basic charge

Charge including VAT

Erection of room in roof space with a floor area not exceeding 40m² (without dormer) 

£400

£480

Erection of room in roof space with a floor area not exceeding 40m² (with dormer) 

£450

£540

Full plans application 

Full plans application fees table

Formation of a room in roof space, including means of access thereto. Fees for lofts greater than 40m² are to be based on the cost of work. The fee cannot be less than shown below

Plan deposit charge

Inspection Charge

Total charge

Basic charge

Inc. VAT

Basic charge 

Inc. VAT

Basic charge 

Inc. VAT

Erection of room in roof space with a floor area not exceeding 40m² (without dormer) 

£150

£180

£250

£300

£400

£480

Erection of room in roof space with a floor area not exceeding 40m² (with dormer) 

£150

£180

£300

£360

£450

£540

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