Costs
Planning Applications Fees
If your extension needs planning permission the application fee payable to the local authority is £300.
Certificate of Lawful Development Fee
If your extension is classed as permitted development and your aren't located in a conservation area you can apply for a Certificate of Lawful Development. This is your proof that the development doesn't need planning permission. Whilst it isn't compulsory to obtain this, we would recommend obtaining this confirmation. The application fee payable to the local authority is £150
Building Warrant Application Fee
The building warrant application fee is directly linked to the value of works to be undertaken. The majority of projects we undertake result in an application fee of around £200 for minor works (e.g. a wall to e removed), £456 for conversion of a single garage, £823 for a single storey extension.
Est. Build Cost (£) | Application Fee (£) |
|---|---|
0-5000 | £200.00 |
5001-5500 | £219.00 |
5501-6000 | £238.00 |
6001-6500 | £257.00 |
6501-7000 | £276.00 |
7001-7500 | £295.00 |
7501-8000 | £314.00 |
8001-8500 | £333.00 |
8501-9000 | £352.00 |
9001-9500 | £371.00 |
9501-10000 | £390.00 |
10001-11000 | £412.00 |
11001-12000 | £434.00 |
12001-13000 | £456.00 |
13001-14000 | £478.00 |
14001-15000 | £500.00 |
15001-16000 | £522.00 |
16001-17000 | £544.00 |
17001-18000 | £566.00 |
18001-19000 | £588.00 |
19001-20000 | £610.00 |
20001-30000 | £681.00 |
30001-40000 | £752.00 |
40001-50000 | £823.00 |
50001-60000 | £894.00 |
60001-70000 | £965.00 |
70001-80000 | £1,036.00 |
80001-90000 | £1,107.00 |
90001-100000 | £1,178.00 |
100001+ | ask |
Our Fees
Following an initial meeting to discuss the works to be carried out we will provide a fixed fee quotation to prepare the necessary drawings, specifications and calculations and act as you agent during the application process until consent is granted. Unlike other companies, we will provide project specific construction details and all structural engineering inputs necessary for each application within our fixed fee. Prices for preparation of all drawings and documentation for planning permission and building warrant start from:
Garage conversions - £800
Sun rooms - £1,300
Loft conversions - £1,800
Single storey extensions - £1,300
Two storey extensions - £1,900
Where your extension contains a large proportion of glass there may be additional costs associated with further structural engineer input and/ or the need to carry out additional energy/ thermal calculations