Extending your house can be a great way to add extra space without the hassle of moving. Whether you need more room for a growing family or want to increase your home's value, understanding the costs involved is crucial. In this article, we'll break down the factors that influence extension costs, how to use a cost calculator and tips for saving money on your project.
Key Takeaways
House extensions can save you the trouble and cost of moving.
Using a cost calculator helps you get a clear estimate for your project.
Different types of extensions, like loft or basement, come with varying costs.
Planning permission and unexpected expenses should be part of your budget.
An extension can significantly increase your home's value.
Understanding Average House Extension Costs
Extending your house can be a big project, and it's important to know what to expect in terms of costs. The average cost of house extensions can vary widely depending on several factors. For a single-storey extension, you might spend between £30,000 and £75,000. If you're considering a two-storey extension, the costs could range from £50,000 to £90,000.
Factors Influencing Costs
Several elements can affect the overall cost of your house extension. These include the size of the extension, the quality of materials used, and the complexity of the design. Additionally, costs for architectural services and planning permissions should be factored in.
Regional Variations
Where you live can also impact the cost. Extensions in urban areas or regions with higher living costs will generally be more expensive than those in rural areas. It's essential to get detailed quotes from contractors in your area to understand the specific costs you might face.
Cost per Square Metre
A useful way to estimate the cost of your extension is to look at the price per square metre. On average, you can expect to pay between £1,900 and £3,250 per square metre, the typical being £2,500. This can help you get a rough idea of the total cost based on the size of the extension you are planning.
Using a House Extension Cost Calculator
A house extension cost calculator is a handy tool that helps you estimate the cost of your planned extension. It provides a realistic estimate based on various factors like the type of extension and the total area in square metres.
Benefits of Using a Calculator
Using a cost calculator can save you time and effort. It gives you a quick estimate, helping you plan your budget more effectively. You can also compare different types of extensions, such as loft, basement, or side extensions, to see which one fits your budget best.
How to Calculate the Cost of Your Extension
To calculate, follow these simple steps:
Identify the type of extension you want (e.g., loft, basement, side).
Measure the total area in square metres.
Input these details into the calculator and times by the average m2/£ of £2,500.
Review the estimated cost.
Interpreting the Results
The results from the calculator are estimates and can vary based on specific project details, location, and service providers. They serve as a guide to help you plan comprehensively, ensuring you're financially prepared for the journey ahead.
Comparing Extension Types: Side, Loft, Basement, and More
Side Extensions
Side extensions are a popular choice for homeowners looking to add extra space without altering the main structure of the house. They are typically built to the side of the property and can be single or multi-storey. These extensions are ideal for creating additional living areas or expanding existing rooms.
Loft Extensions
Loft extensions make use of the unused space in your attic. This type of extension is perfect for adding an extra bedroom, office, or playroom. Loft extensions often require structural calculations and inspections to ensure safety and compliance with Building Regulations.
Basement Extensions
Basement extensions involve converting the underground space of your home into a usable area. This type of extension is ideal for creating additional living space, such as a home theatre, gym, or guest room. Basement extensions can be more complex and costly due to the need for waterproofing and structural support.
More Extension Types
There are various other types of extensions you can consider, including:
Single storey extensions
Two storey extensions
Kitchen extensions
Garage conversions
Loft conversions
Each type of extension has its own set of benefits and challenges, so it's important to choose the one that best suits your needs and budget.
Additional Costs to Consider
When planning a house extension, it's essential to account for various additional costs that might arise. These expenses can significantly impact your overall budget and should not be overlooked.
Planning Permission Fees
Before starting any construction, you may need to obtain planning permission from your local council. The fees for this can vary, but it's a necessary step to ensure your extension complies with local regulations.
Architect and Designer Fees
Hiring an architect or designer to create detailed plans for your extension is crucial. Their expertise ensures that your project is both functional and aesthetically pleasing. However, their services come at a cost, which should be factored into your budget.
Unexpected Expenses
Unexpected expenses can crop up at any stage of the project. These might include structural issues discovered during construction, additional materials needed, or changes to the original plans. It's wise to set aside a contingency fund to cover these unforeseen costs.
Here's a list of other potential hidden costs:
Listed building consent
Survey fees
Building regulations approval fees
Structural engineer fees
Party wall agreements
Insurance
Waste disposal
Electrical upgrades
Council tax adjustments
External requirements
Is It Cheaper to Extend or Build Up?
When considering whether to extend your house or build upwards, it's important to weigh the costs and benefits of each option. Generally, extending upwards is more cost-effective than building outwards. For instance, a single-storey extension, like a conservatory, usually costs less than a double-storey extension, but the additional cost of a second storey compared to a single storey is around 50% to go up and create more space.
Cost Comparison
Extending outward often involves simpler construction and fewer structural changes, making it cheaper. On the other hand, building upwards may require reinforcing the existing structure, which can be expensive. Calculating the specific costs using an extension cost calculator can help you understand the financial implications of each option.
Pros and Cons
Extending outward
Pros: Usually cheaper, simpler construction, less structural work.
Cons: Takes up garden or yard space.
Extending upward
Pros: Preserves outdoor space, can add more rooms.
Cons: More expensive, may require structural steel beam reinforcement.
Impact on Property Value
Whether you extend outwards or build upwards, both options can add value to your property. However, the impact on property value depends on various factors, including the quality of the work and the local housing market. Using a cost calculator can help you make an informed decision.
How to Save on House Extension Costs
Budgeting Tips
Venturing into a house extension doesn't have to strain your finances beyond reach. With strategic planning, informed choices, and a bit of insider know-how, you can significantly pare down expenses without compromising on your plan. First, consider simplifying your design; complex structures require more materials and labour, whereas streamlined, functional designs can be just as impactful.
Choosing Cost-Effective Materials
There are many ways you can cut the cost of your extension: whether through smart planning, simple design or reusing, upcycling and repurposing materials. You can also save money by choosing a builder used to working with low or tight budgets, and by project managing tightly. Use our guide to cutting the cost of an extension to get the lowdown on all these points and more.
Hiring the Right Contractors
Set a budget and get several quotations for the work
Have contingency cash in case of unforeseen circumstances
Carry out some of the jobs yourself, but only if you have the skillset!
Hire good tradespeople you trust to get the job done
Source the materials yourself
Will an Extension Add Value to Your Home?
Before diving into the specifics of extension costs, it's important to consider if an extension is financially viable and suitable for your property. An extension can significantly boost your home's market value, making it a sound investment.
Market Trends
Adding an extension to your home can enhance comfort, style, and functionality. It also offers a cost-effective alternative to moving, saving you from the hassles and expenses of selling your current home, buying a new one, and relocating. Ultimately, a home extension is not just an expansion of space; it's an enhancement of your living experience and a strategic step in future-proofing your property.
Return on Investment
Research by Nationwide Building Society found that an additional bathroom can add 6%, a double bedroom 12%, and a double bedroom with an en-suite 23%. These figures are based on extensions on the average three-bed house in the UK.
Factors Affecting Value Addition
Several factors can influence the value added by an extension:
Location: Regional variations can impact the added value.
Quality of Work: High-quality construction and finishes can enhance value.
Design: A well-thought-out design that complements the existing structure can add more value.
Market Conditions: The current real estate market can affect how much value is added.
Thinking about adding an extension to your home? It could boost your property's value and give you more space to enjoy. But how do you know if it's the right move? Visit our website to get expert advice and a free quote. Our team at AMS SURVEYS is here to help you make the best decision for your home.
Conclusion
Extending your house can be a great way to add more space and increase its value. By using a house extension cost calculator, you can get a clear idea of the expenses involved. It's important to consider both the primary costs, like materials and labour, and the additional costs that might come up. Whether you are extending to improve your living space or to boost your property's value, careful planning and budgeting are key. Remember, an extension can be a solid investment, often paying for itself in the long run. So, take your time, do your research, and make the best decision for your needs and budget.
Frequently Asked Questions
What is the average cost of a house extension?
The cost of a house extension can vary, but on average, it ranges from £1,000 to £2,500 per square metre. The final cost will depend on various factors such as location, materials, and the type of extension.
How can I calculate the cost of my house extension?
You can use a house extension cost calculator. First, find out the cost per square metre for your type of extension, then multiply it by the total square metres of the new space.
Do I need planning permission for a house extension?
Most extensions do require planning permission, but some smaller projects may fall under permitted development rights. It’s best to check with your local council to be sure.
What are some hidden costs of extending a house?
Hidden costs can include planning permission fees, architect and designer fees, and unexpected expenses like dealing with structural issues or delays.
Is it cheaper to extend or build up?
Building out (extending) is generally cheaper than building up (adding another storey). However, the best option depends on your specific situation and needs.
Will an extension add value to my home?
Yes, a well-planned extension can add value to your home. On average, an extension can increase a property's value by around 20% and offer a return on investment of about 70%.