Double Storey Side Extension Cost Calculator
Here’s an estimation of the cost of a double storey side extension in the UK:
| Item | Estimated Cost (GBP) |
|---|---|
| Architectural Plans | £1,000 – £3,000 |
| Planning Permission | £200 – £500 |
| Building Regulations | £500 – £1,000 |
| Structural Engineer | £500 – £1,500 |
| Groundwork and Excavation | £3,000 – £5,000 |
| Foundations | £2,000 – £4,000 |
| Brickwork and Masonry | £10,000 – £20,000 |
| Roofing | £8,000 – £15,000 |
| Windows and Doors | £4,000 – £8,000 |
| Electrical Work | £2,000 – £5,000 |
| Plumbing and Heating | £3,000 – £8,000 |
| Insulation and Damp Proofing | £2,000 – £4,000 |
| Plastering and Rendering | £3,000 – £6,000 |
| Flooring | £2,000 – £5,000 |
| Fixtures and Fittings | £2,000 – £6,000 |
| Decorating | £1,000 – £3,000 |
| Contingency (10-15%) | £5,000 – £10,000 |
| Total Cost | £50,700 – £114,000 |
Please note that these costs are estimations and can vary depending on factors such as location, size of the extension, materials used, and specific requirements of the project. It’s essential to obtain quotes from professionals for accurate pricing.
FAQs
How much does a 2 story extension cost UK?
The cost of a 2 story extension in the UK can vary widely depending on factors such as location, size, materials, and level of finish. On average, it can range from £30,000 to £70,000 or more.
How much value does a 2 storey extension add?
A well-designed and constructed 2 storey extension can significantly increase the value of a property. On average, it can add approximately 20-30% to the value of the property.
Can a side extension be 2 storey?
Yes, a side extension can be two storeys, but it will require planning permission and must comply with building regulations.
How do I estimate the cost of an extension?
To estimate the cost of an extension, you should consider factors such as size, location, materials, labor costs, and any additional features or requirements. It’s recommended to obtain quotes from builders or construction professionals for accurate estimates.
Is a 2 storey extension worth it?
Whether a 2 storey extension is worth it depends on individual circumstances such as the property’s layout, budget, and long-term plans. In many cases, a 2 storey extension can provide additional living space and significantly increase the value of the property.
What is the average cost of a 2 storey extension?
The average cost of a 2 storey extension in the UK can vary depending on factors such as size, location, materials, and level of finish. On average, it can range from £30,000 to £70,000 or more.
What is the most expensive part of a house extension?
The most expensive part of a house extension is typically the construction phase, including materials, labor, and any additional features such as plumbing or electrical work.
How long does a 2 storey extension take to build?
The time it takes to build a 2 storey extension can vary depending on factors such as size, complexity, weather, and availability of materials. On average, it can take 3 to 6 months or more from start to finish.
What type of extension adds most value?
Extensions that add additional living space, such as kitchen extensions or extra bedrooms, tend to add the most value to a property.
What is the 50% planning rule?
The 50% planning rule refers to the maximum percentage of the area of land around a property that can be covered by buildings. This rule helps to ensure that there is adequate space for gardens and outdoor areas.
Do I need permission for a side extension?
In many cases, planning permission is required for a side extension, especially if it exceeds certain size limits or alters the appearance of the property. However, permitted development rights may apply in some cases.
How much can you extend to the side of a house?
The amount you can extend to the side of a house will depend on factors such as local planning regulations, the size of the property, and any existing extensions or structures. It’s essential to check with local authorities for specific guidance.
How can I reduce the cost of an extension?
Some ways to reduce the cost of an extension include keeping the design simple, using standard materials, minimizing structural changes, and obtaining multiple quotes from builders for competitive pricing.
How much does a 4m extension cost?
The cost of a 4m extension can vary depending on factors such as location, materials, and level of finish. On average, it can range from £20,000 to £50,000 or more.
Can I build a 2 storey extension without planning permission?
In some cases, you may be able to build a 2 storey extension without planning permission if it falls within permitted development rights and meets certain criteria. However, it’s essential to check with local planning authorities to confirm.
Can an extension devalue a house?
An extension can potentially devalue a house if it is poorly designed, constructed, or does not suit the property’s style or layout. However, a well-executed extension that adds valuable living space can increase the property’s value.
How much does an extension cost per m2 UK?
The cost of an extension per square meter in the UK can vary depending on factors such as location, materials, and level of finish. On average, it can range from £1,500 to £3,000 or more per square meter.
Is it cheaper to extend or move?
Whether it is cheaper to extend or move depends on factors such as the cost of the extension, property prices in the area, stamp duty, and moving costs. In many cases, extending can be more cost-effective than moving.
How long does a 2 storey extension take UK?
The time it takes to complete a 2 storey extension in the UK can vary depending on factors such as size, complexity, weather, and availability of materials. On average, it can take 3 to 6 months or more from start to finish.
How much do builders charge for an extension?
Builders’ charges for an extension can vary depending on factors such as location, size, materials, and level of finish. On average, builders may charge between £1,000 to £2,500 or more per square meter for construction work.
Is a small extension worth it?
A small extension can be worth it if it provides valuable additional living space and enhances the functionality and value of the property. However, it’s essential to consider the cost versus the benefits and ensure that the extension complements the existing property.
What makes an extension expensive?
Several factors can contribute to the cost of an extension, including the size, complexity, materials, labor costs, and any additional features or requirements such as plumbing or electrical work.
How much value will an extension add to my property?
The value that an extension adds to a property can vary depending on factors such as the size, quality, and functionality of the extension, as well as market conditions and location. On average, a well-executed extension can add approximately 20-30% to the value of the property.
How deep are foundations for a 2 storey extension UK?
The depth of foundations for a 2 storey extension in the UK can vary depending on factors such as soil conditions, building regulations, and the size and weight of the structure. Generally, foundations for a 2 storey extension may need to be at least 1.5 to 2 meters deep.
How deep should a foundation be for a 2 storey extension?
The depth of foundations for a 2 storey extension should be sufficient to support the weight of the structure and transfer loads to the underlying soil or bedrock safely. Typically, foundations may need to be at least 1.5 to 2 meters deep in the UK.
Can you live in a house during an extension?
In many cases, it is possible to live in a house during an extension, especially if the work is confined to specific areas and suitable arrangements are made for access, utilities, and safety.
Does a bigger kitchen add value?
A bigger kitchen can add value to a property, as it is often considered a desirable feature by potential buyers. A spacious and well-designed kitchen can enhance the functionality and appeal of a home.
Does a side extension add value?
A well-designed and constructed side extension can add significant value to a property by providing additional living space and enhancing its functionality and appeal.
Does converting a conservatory to an extension add value?
Converting a conservatory to an extension can add value to a property by creating a more usable and functional living space. However, the value added will depend on factors such as the quality of the conversion and the overall appeal of the property.