The Cost of a Single-Storey Extension in London 2024
Adding a single-storey extension to your home can be a fantastic way to increase your living space and potentially boost your property’s value. However, it’s essential to understand the costs involved to plan your budget effectively. Here’s a detailed look at what you can expect to pay for a single-storey extension in London in 2024.
Average Costs
The cost of a single-storey extension in London generally ranges from £1,800 to £3,300 per square metre, depending on the quality of materials and the complexity of the design. Here are some typical price ranges based on the size of the extension:
- 20m² Extension: £36,000 to £66,000
- 30m² Extension: £54,000 to £99,000
- 50m² Extension: £90,000 to £165,000
These estimates include essential features like walls, flooring, roofing, windows, and basic finishes but exclude high-end fittings and fixtures, which can significantly increase the total cost.
Additional Costs
- Kitchens and Bathrooms: Adding a kitchen or bathroom to your extension will increase costs. Kitchens typically add between £15,000 and £40,000, while bathrooms can add £5,000 to £10,000 to your budget.
- Planning and Permits: While many single-storey extensions fall under permitted development rights, you might still need to apply for planning permission. The application fee in England is £206, and building regulations documentation can cost between £500 and £1,500.
- Professional Fees: Hiring an architect or other consultants will add 15%-20% to your total project cost. These professionals can help with design, planning permission, and ensuring the build meets all regulations.
- VAT: Most extensions will attract the standard 20% VAT rate, although some projects may qualify for a reduced rate if certain conditions are met.
Types of Extensions
- Side Extensions: These are a popular choice for expanding existing rooms or adding new ones like a home office or gym. Costs range from £1,800 to £3,500 per square metre.
- Rear Extensions: Often used to create larger kitchens or living spaces, rear extensions typically cost between £1,800 and £3,300 per square metre.
- Wrap-Around Extensions: Combining side and rear extensions, these offer the most additional space and range from £1,800 to £3,300 per square metre.
Budgeting Tips
- Set a Realistic Budget: Plan for the total cost, including materials, labour, professional fees, and VAT.
- Allow for Contingencies: Include a 10%-20% buffer for unexpected expenses.
- Plan for Value Increase: While expensive, extensions often add significant value to your home, making them a worthwhile investment.
While a single-storey extension can be costly, careful planning and budgeting can help manage expenses and ensure the project adds value to your property. For a more detailed quote and specific advice tailored to your project, consulting with local builders and architects is recommended. Check the EyeOnLondon Business Directory in your preferred location to find a local builder and architect for more information.
