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Fees and charges for domestic extensions and alterations

Fees and charges from 6 April 2026.

CategoryDescriptionFull plansBuilding noticeRegularisation
Plan chargeInspection charge
1Up to 10m2£197.00£242.00£527.00£633.00
2Between 10m2 and 40m2£329.00£343.00£805.00£967.00
3Between 40m2 and 100m2£395.00£496.00£1,070.00£1,284.00
4Loft conversion£293.00£343.00£762.00£914.00
5Erection or extension of non-exempt detached garage or carport up to 100m2£183.00£183.00£438.00£526.00
6Erection or extension of non-exempt attached garage or carport up to 100m2£220.00£220.00£528.00£634.00
DescriptionBasis of chargeFull plansBuilding noticeRegularisation 
Plan chargeInspection charge
Garage conversionFixed fee£183.00£256.00£527.00£632.00
Solid conservatory roofFixed fee£103.00£137.00£288.00£346.00
Alterations not included aboveEstimated cost <£2,000£103.00£137.00£288.00£346.00
Estimated cost between £2,001 & £5,000£146.00£146.00£351.00£421.00
Estimated cost between £5,001 and £25,000£220.00£300.00£624.00£748.00
Estimated cost between £25,001 and £50,000£293.00£377.00£803.00£964.00
Estimated cost between £50,001 and £100,000£439.00£454.00£1,071.00£1,285.00
CategoryCharge basisFull plansBuilding noticeRegularisation
Plan chargeInspection charge
Windows / thermal renovation <£5000Fixed price£154.00included in plan fee£154.00£185.00
Windows / thermal renovation >£5000Fixed price£195.00included in plan fee£195.00£235.00

Replacement doors and windows are controlled by building regulations. Where an installer is not accredited by a competent persons' scheme the work must be inspected by the council's building control officer.

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