Calculate Your Building Regulations Fees
Frequently Asked Questions
How much are building regulations fees in England in 2026?
Building regulations fees in England consist of a plan charge and an inspection charge. A typical single-storey extension costs around £689 in total (£230 plan charge + £459 inspection). A new dwelling costs approximately £2,057 (£685 plan charge + £1,372 inspection). These fees are statutory and do not include VAT.
What is the difference between Full Plans and Building Notice?
A Full Plans application involves submitting detailed drawings for council approval before work starts — this gives you a formal approval notice and is recommended for complex projects. A Building Notice does not require plans to be submitted upfront; the inspector visits during the build. Building Notice is simpler but riskier as issues may only emerge during construction.
Is VAT charged on building regulations fees?
No. Building regulations fees are statutory charges set by local authorities and are exempt from VAT. However, if you use a private approved inspector instead of your local authority, their fees may be subject to VAT. Always confirm the VAT treatment when getting quotes.
Do I need building regulations approval for a loft conversion?
Yes. Loft conversions require building regulations approval in virtually all cases, even if they do not require planning permission. The regulations cover structural integrity, fire safety, insulation, means of escape and staircase requirements. The total building regulations fee for a loft conversion is typically around £600.
How long do building regulations approvals last?
A Full Plans approval is valid for 3 years from the date of deposit. If work has not started within 3 years, a fresh application may be required. A completion certificate is issued after a satisfactory final inspection, and this is an important document when selling a property.