How much does a house extension cost?

House extensions can be a difficult subject to discuss when it comes to accurate costs regarding structural design part. There are many variables that may influence price approximation and support configuration such as overall size of the added part, location and size of openings, used materials, volume of glazing, ground conditions, local vegetation including water demanding trees and presence of existing utility services.

This is why it can be very helpful to get the help of experts before you draw up any plans or put them into motion.

It can also help you to have a basic understanding of the different types of house extensions there are and how their complexity can affect the overall cost of your project.

However, to give you a rough estimate, the cost of an average-sized single-storey extension can be anywhere between £1450 and £1850 per meter square, but in London, this could be anywhere between £1800 and £2500+ per meter square.

Things to consider about a home extension project

The cost of building your house extension will vary according to what you want and how complex the added structure will be. Smaller, single-storey extensions are going to be cheaper and quicker to build than a two-storey extension that needs far more technical input.

Also, a factor which you need to consider is where you live. Your local authority may have different rules about home extensions than another authority in the next county. If you live in or near a major city, such as London for example, your extension may cost more than a similar one for someone living in a more rural area.

However, this does not mean that there are not a set of general rules and guidelines that need to be adhered to regardless of where you live. There are statutory Building Regulations and structural elements need to be designed to relevant design codes.

If you have never had an extension built before and are unfamiliar with the process, then you should consider keeping in touch with one of our team members at GL Design Services.

Getting accurate quotes

Usually, a homeowner will think that getting a quote from a contractor for their home extension is the first step they should take. However, it can be difficult for a construction company to give you an accurate quote if you don’t know what sort of structural support layout your extension needs.

Our team at GL Design Services are UK qualified chartered engineers experienced in the calculation of steel, reinforced concrete, timber and masonry structures, providing complete structural solutions from concept design sketches to fully-detailed drawings developed by using CAD technology.

If you want to know exactly what your building extension needs from a structural perspective then get in touch with us so we can discuss your needs.

With our help, you can have a perfectly planned out new project that is safe and uses the most appropriate materials for your type of extension. Once you have our structural package in hand, you will be able to get more accurate building quotes and be able to remain in control of your budget.

Do not hesitate to get in touch with our team at GL Design Services, if you need more information about our house extension services.

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Getting help with your extension plans

Once you have decided on the type of house extension you want and the house area to be extended, you should get a qualified structural engineer involved in your home improvement project.

Home extensions are one of the most popular residential building projects for an excellent reason. Not only do they give you the space you need for your growing family to expand and breathe, but a well-planned, high-quality extension can add a decent level of value to your house should you ever decide to sell up and move.

A well-designed kitchen extension, loft conversion or single-storey extension will add tremendous value to your home as long as the building work has been expertly planned and carried out by qualified construction workers.

Structural inspection and building plan

Before you decide to remove a wall or rip out your kitchen, the first step is to talk to our team of fully qualified, experienced civil and chartered structural engineers. We work with homeowners living in the Croydon, London and SE area.

Once appointed, we will visit your home to conduct a full structural inspection and draw up a comprehensive set of plans to make sure your extension building project doesn’t end up compromising the structural integrity of your home.

No matter whether you plan to extend into your loft space, add a single-storey kitchen and dining room extension to the back of your house, or plan to build out sideways over your existing garage and add a first-floor extension, we will be able to explain the whole process and make sure you will get the very best from your home extension structural plans.