Fees and charges for domestic extensions and alterations
Fees and charges from 6 April 2026.
Domestic extensions to a single dwelling
| Category | Description | Full plans | Building notice | Regularisation |
|---|
| Plan charge | Inspection charge |
|---|
| 1 | Up to 10m2 | £197.00 | £242.00 | £527.00 | £633.00 |
| 2 | Between 10m2 and 40m2 | £329.00 | £343.00 | £805.00 | £967.00 |
| 3 | Between 40m2 and 100m2 | £395.00 | £496.00 | £1,070.00 | £1,284.00 |
| 4 | Loft conversion | £293.00 | £343.00 | £762.00 | £914.00 |
| 5 | Erection or extension of non-exempt detached garage or carport up to 100m2 | £183.00 | £183.00 | £438.00 | £526.00 |
| 6 | Erection or extension of non-exempt attached garage or carport up to 100m2 | £220.00 | £220.00 | £528.00 | £634.00 |
Alterations to a single domestic building
| Description | Basis of charge | Full plans | Building notice | Regularisation |
|---|
| Plan charge | Inspection charge |
|---|
| Garage conversion | Fixed fee | £183.00 | £256.00 | £527.00 | £632.00 |
| Solid conservatory roof | Fixed fee | £103.00 | £137.00 | £288.00 | £346.00 |
| Alterations not included above | Estimated 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 |
Window and door replacement
| Category | Charge basis | Full plans | Building notice | Regularisation |
|---|
| Plan charge | Inspection charge |
|---|
| Windows / thermal renovation <£5000 | Fixed price | £154.00 | included in plan fee | £154.00 | £185.00 |
| Windows / thermal renovation >£5000 | Fixed price | £195.00 | included 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.
