Ground floor House Extension in Brentford

Compare Single Storey House Extension Prices in Brentford

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Ground floor House Extension in Brentford

Are you trying to find Single storey house extension in Brentford? Our network of builders can assist with your project. All of our Builder in Brentford are checked so you can see local testimonials, when the business was set up, reviews, approval and price,  allowing you to make the right choice on who to employ. Let us take the inconvenience out of finding as much as 4 pros for your Single storey house extension job.

Single storey extensions are a great way to add space and value to your property. A single storey extension can be quite cost effective and they are suited to many homes. Smaller sized single storey home extensions can be built without the need to apply for planning permission as they are covered under permitted development rights. Substantial single storey extensions will still need planning permission. Single storey home extensions can also often be placed to either the side or back of your home. Single storey home extensions are often used to expand kitchens or even to put in a downstairs study or utility room.

 

Additionally, they are often used to create a larger open plan area in the downstairs of the property that could be used as a kitchen diner or living area. Adding roof lighting and bifold doors to your home extension will create a huge airy space that provides a seamless transition into the garden. While single storey home extensions may appear simpler than other varieties of extension, careful planning remains required to ensure that the new space is practical and beautiful. Competent architects and builders can give you advice on the most suitable design for your home extension, considering the requirements of the new space as well as the best way to complement the present building. Your single storey home extension could be designed to accentuate your pre-existing property and use similar materials for its construction or be designed to contrast, presenting an impressive effect by using differing materials.

 

Variables that impact Single Storey Extension Prices

There are a couple of elements to remember when you are establishing your spending plan. The major elements that influence the price of a single storey extension are the size and the finish. Yet there are various other aspects that it deserves remembering while you are making your strategies.

High Priced Groundworks Needed

If it is difficult to dig the foundations and lay the ground for your extension, then this can raise the cost of your extensions. This could be the situation if the ground is tough to deal with. Debris in the ground can also raise the costs.

  • Caliber of Fixtures and Fitting
    After the size of the extension, the next most significant variable is the quality of the finish. Picking high-end options can bring about the last price being more than dual what it would certainly be when selecting the standard choices.
  • Dimension of Extension
    When you are getting an extension on your home, the single biggest element that will affect the price of your extension is the size of it. The larger the extension is, the a lot more you will end up paying. If the location inside the extension is straightforward, without internal walls, after that this will certainly reduce the cost per m2 somewhat. However, despite this in mind. The bigger the location of your extension, the extra you pay.
  • Kind of Extension
    The kind of extension you choose will go a long way in the direction of determining how large your extension will certainly be. Side return extensions develop the tiniest additional room so are usually the most inexpensive option, while a wraparound kitchen area extension will produce the most area and also have one of the most expensive fittings as well as components.
  • Building Regulations
    Most of the times, building regulations don't add a lot of price to a structure project. Nevertheless, if you are constructing an extension onto an older residence, there may be some unexpected costs. This is especially real if the home has actually not recently been upgraded. Structure guidelines will apply to your entire home, not just the extension. This can lead to the need for electrics to be considered or door replaced.

 

Kitchen Extensions:

Kitchen extensions mainly fall under the areas of single floor extensions, although all kinds of home extensions could be utilized to integrate added space for a kitchen.

As an approximate overview, a single storey extension will set you back from ₤ 1,000 - ₤ 2,000/ m2, with a fundamental construct at the lower end of the scale as well as a superb construct high quality at the higher end at a variety, with expenses of ₤ 2,500/ m2 plus.

 

How to find a builder for your extension:

We will offer as much as 4 Single storey house extension pros in your area, who will provide quotations for the job you want done. You'll obtain a property visit from professionals in Brentford who'll aid you to select the right Single storey house extension for your house prior to carrying out the installation. Enter your postal code to start searching currently.

Average Single storey house extension cost in Brentford

The typical cost of Single storey house extension is £29000. Costs alter based on the materials and the firm selected. The upper price range can be as high as £34800. The material costs are in general around £12000

Average price per Single storey house extension job in 2026

Avg. price low

Avg. price low
£24,400

Avg. price

Avg. price
£34,667

Avg. price high

Avg. price high
£44,934

£45500

£34125

£22750

£11375

£0

Prices based on actual Single storey house extension costs for Brentford, as reported by local LeadsDoWork members.

Single storey house extension installation cost in Brentford 2026

Labour cost £14,000
Material cost £12,000
Waste removal £3,000
Time frame: 8-12 weeks
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Single storey house extension searches near Brentford, 19 July to 16 October 2026

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Brentford

The West London town of Brentford forms a section of the Borough of Hounslow and is also found at the confluence of the River Thames having a population of around 50,000. Brentford doesn't have a good deal in the way of modern homes with many houses dated from the 1930s, meaning there's always house enhancements necessary in the area. For the work you want completed make certain only to make use of vetted tradesmen in Brentford for the ideal cost and good quality work.

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Single storey house extension pros in Brentford

Jassi Builders Ltd

2 review(s)
Based: in Hayes, UB4 9YD

Hi Jassi Builders LTD here, I am a specialist in planning, designing and building control services. I make sure that I have completed all my work on perfect time and leave customers in complete satisfaction. We do all types of loft conversions, exten...

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Angela A., HP1
3

Single Storey House Extension in Hemel Hempstead

Assured me he Would give me a good price which made me feel less confident with this builder he was supposed to phone on...

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FAQs

How to find a builder for a house extension?

Builders are everywhere, but finding one for your project can be tricky and stressful, with both cost and reliability coming into question. This is even more worrisome when you’re fully aware that your house extension can only be as good as the builder. If you’re also facing the same challenge, then you’ve come to the right place. In this article, we’ll share with you some tips on how to choose a professional and reliable builder who’ll ensure you get immense value for every penny spent. Let’s take a look!

✓ Ask for recommendations. To find a tradesperson, not just a builder, personal recommendations is the best way to go. Building a house extension is a major undertaking which comes with a lot of costs, so if you’re going to do it the least you can do is ensure you do it right. Carry out your research, ask friends and family, neighbours and loved ones if the know of any reliable builder in the local area. If they’ve have one they’ve used, you can request for the cost, quality of the job done, the duration of the project and any other detail you feel you should know.

✓ Search Online. Use our search feature to look at the builders available or submit and enquiry and we will find you one. Our site holds details of numerous builders and building companies which you can go through their ratings to select the best.

✓ Select a reliable builder from trading association. Most reliable builders are usually a member of a recognized trading association or the other. Though this is not obligatory for builders, but it can be used as a dependable medium to find a good builder. We list what trade association the builders are a member of.

does a kitchen extension add value to your house?

If you’re planning to add a kitchen extension to your property or perhaps you’re simply looking for ways to increase the value of your property, this is one of the common questions that usually pops up. A simple answer to this question is yes, a kitchen extension will add value to your house. With a kitchen being one of the most frequently used room in a house, adding an extra space to the commonly used room can only increase the value of the entire property. However, to determine the value added by such an extension, there’s a need to calculate the cost of setting one up first.

Kitchen extension costs are greatly influenced by a wide range of variables such as the size, type of the extension and specifications, your location, professional fees, materials used and more. Overall, the type of the extension you opt for will play the most significant role in the determination of your kitchen extension cost. Here, we’ll be looking at a single storey kitchen extension.

For a single storey kitchen extension, you can expect your home’s market value to increase within the range of 5 percent to about 10 percent. When trying to calculate the cost of kitchen extension, it’s crucial to take into account how much value it’ll add to your home so as to make sure that the amount expended will not outweigh the expected value to be added by the project.

For a more accurate idea, there’s the need to consult local estate agents. However, for a much needed guideline, single storey kitchen extensions are usually able to add about 5 to 10 percent to a home’s value, while double storey extension should be up to 20 percent. But as stated earlier, this will depend on several variables.

how much does a single storey house extension cost?

If you’re planning to build a single story house extension, this is one of the first questions that usually comes to mind to help you set a budget and start to make plans. But as simple as it seems, a single accurate answer can not be provided due to the fact that there are several variables that can play a key role in influencing the price of a single story house extension. These variables includes the size, location, design or specification as well as the build route. In this guide, we’ll provide you with a rough estimate that you can work with to put you on the right path.

The main determinant of the cost of a single storey extension is the size of the build, while the next most relevant factor is the quality of the finish you opt for. For a small extension, you can expect to spend a sum within the range of £14,000 to £17,000. Meanwhile for a larger single storey extension, if you opt for a large wrap around the extension with a great amount of glass to be incorporated in both the walls and roof, you can expect to pay a sum within the range of £80,000 to £120,000.

Overall, the average cost of a single story house extension is usually within the range of £34,000 to £37,000. For this price, you should get a standard sized rear or side extension which also includes the cost of a kitchen - it’s the most commonly use for a single story extension especially in the UK.

There are some additional costs you may also need to factor in to your extension budget. These includes surveys, architect fees, planning application fee (if needed), insurance and Party Wall Agreement (if needed).

do i need planning permission for a kitchen extension?

If you’re planning to construct a kitchen extension on your property, one of the first things that comes to mind is whether or not you’ll require a planning permission before you proceed. Generally, kitchen extensions are normally classified as permitted development which allows you to carry out your project without any interruptions from the law or your local authority. In other words, if your extension is meets up with the guidelines of the permitted development rights, you won’t have to apply for a planning permission. However if otherwise, you’ll have to apply for a planning permission to your local council and may require additional reports. And regardless of your position, you’ll always need building regulations approval before you can carry out any kitchen extension project. It may also be required that you’ll have to issue a part wall notice if you’re to build on or close to the boundary with a neighbour.

If you don’t want to go through the hassle and stress involved in applying for a planning permission with your local council, then you must ensure the following:

✓ Your kitchen extension must not be over half of the area of land around your main house.

✓ The kitchen extension must not be side elevation onto a highway or forward of the principal elevation.

✓ The extension must not be taller than the highest part of the roof.

✓ The height of your kitchen extension must not go beyond four metres.

✓ Kitchen extension that’s more than one storey must not go exceed the rear wall of the main house by more than three metres.

✓ Two storey kitchen extensions must not be closer to rear boundary by anything less than seven metres.

✓ The kitchen extension must not include balconies, verandas or any raised platforms.

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Overall rating:


Brentford Single storey house extension pros are rated 4.2 out of 5 on average: 9 rated pros, 51 reviews, of 56 pros covering the area.
The LeadsDoWork rating and review is an overall rating based on verified reviews and feedback from the customers with Single storey house extension projects that have been connected with Single storey house extension pros to help them. All Single storey house extension contractors All Brentford Single storey house extension contractors

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