House Extension Planning Permission Cost

House Extension Planning Permission Cost: A Comprehensive Guide

Extending your home can be an exciting and rewarding endeavor, but it's essential to consider the costs involved, including obtaining planning permission. The cost of planning permission for a house extension can vary depending on several factors. Here's a detailed guide to help you understand these costs and plan accordingly.

Planning Permission Fees

The most significant cost associated with planning permission is the application fee charged by your local planning authority. This fee varies depending on the size and complexity of your proposed extension. For a standard single-story extension, the fees can range from £200 to £500. Larger or more complex extensions may incur higher fees.

Architectural Plans

To obtain planning permission, you will need to submit architectural plans outlining your proposed extension. These plans must be drawn up by a qualified architect or architectural technologist. The cost of architectural plans can vary depending on the size and complexity of the extension. Expect to pay anywhere from £500 to £2,000 for basic plans.

Structural Calculations

In some cases, your local planning authority may require structural calculations to ensure the safety and stability of your proposed extension. These calculations are typically performed by a structural engineer and can cost between £500 and £1,500.

Planning Consultants

If you encounter any difficulties with your planning application or require additional guidance, you may consider hiring a planning consultant. Planning consultants can assist with the application process, negotiate with the planning authority on your behalf, and increase the chances of approval. Their fees can range from £500 to £2,000.

Additional Costs

In addition to the main costs outlined above, you may also incur additional expenses, such as:

Building control fees: To ensure the construction of your extension meets building regulations, you will need to appoint a building control inspector. Fees typically range from £500 to £1,000.
Site surveys: Before submitting your planning application, you may need to obtain a site survey to determine the boundaries of your property and any potential constraints. This can cost between £200 and £500.
Landscaping costs: If your extension involves any alterations to the landscaping of your property, you may need to factor in additional landscaping costs.

Total Cost Estimation

The total cost of planning permission for a house extension can vary significantly depending on the factors discussed above. As a general guide, you can expect to pay between £1,000 and £5,000 for a relatively straightforward single-story extension. More complex or larger extensions may cost upwards of £10,000.

Conclusion

Planning permission costs are an essential consideration when planning a house extension. By understanding the factors that influence these costs, you can make informed decisions and budget accordingly. Remember to consider all potential expenses, including architectural plans, structural calculations, planning consultants, and additional fees, to ensure you have a realistic estimate of the total cost involved.