Ground floor House Extension in Brentwood

Discover Single Storey House Extension Prices in Brentwood

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Ground floor House Extension in Brentwood

Are you trying to find Single storey house extension in Brentwood? Our network of builders can assist with your job. All of our Builder in Brentwood are inspected so you can see local testimonials, when the business was created, ratings, satisfaction and also cost,  enabling you to make the best decision on who to work with. Allow us take the problem out of discovering up to 4 pros for your Single storey house extension project.

Single storey extensions are a great way to add space and value to your house. A single storey extension can be extremely affordable and they are suitable for numerous homes. Smaller sized single storey home extensions can be built without the need to apply for planning permission because they are protected by 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 property. Single storey home extensions can be used to extend kitchen areas or even to put in a downstairs study or utility room.

 

Also, they are often used to make a larger open plan area in the downstairs of the home that may be used as a kitchen diner or living area. Adding roof lights and bifold doors to your home extension will generate a large airy space that creates a seamless transition in to the garden. While single storey home extensions may appear simpler than other sorts of extension, careful planning is necessary to ensure that the new space is functional and attractive. Experienced architects and builders can advise you on the most suitable design for your home extension, taking into account the needs of the new space as well as the best way to complement the pre-existing building. Your single storey home extension could be designed to match your existing property and make use of similar materials for its construction or be designed to contrast, giving an impressive effect by using different materials.

 

Variables that effect Single Storey Extension Prices

There are a few elements to bear in mind when you are establishing your spending plan. The main aspects that influence the price of a single storey extension are the dimension and the finish. However there are other elements that it is worth bearing in mind while you are making your strategies.

Very Expensive Groundworks Needed

If it is difficult to dig the foundations as well as lay the ground for your extension, then this can increase the price of your extensions. This could be the instance if the ground is difficult to collaborate with. Particles in the ground can likewise increase the prices.

  • Caliber of Fixtures and also Fitting
    After the size of the extension, the next greatest factor is the grade of the coating. Picking premium choices can result in the final price being greater than dual what it would be when picking the basic options.
  • Size of Extension
    When you are getting an extension on your house, the single largest factor that will influence the cost of your extension is the size of it. The larger the extension is, the a lot more you will certainly wind up paying. If the location inside the extension is simple, without internal walls, then this will lower the cost per m2 slightly. Nevertheless, even with this in mind. The larger the area of your extension, the extra you pay.
  • Kind of Extension
    The kind of extension you pick will certainly go a long way towards dictating just how huge your extension will certainly be. Side return extensions develop the smallest extra room so are commonly the cheapest option, while a wraparound cooking area extension will certainly produce one of the most space as well as have one of the most high-priced fittings and fixtures.
  • Building Regulations
    For the most part, constructing policies do not add a great deal of cost to a building job. However, if you are constructing an extension onto an older residence, there may be some unforeseen prices. This is specifically true if the residence has not just recently been updated. Building policies will relate to your entire house, not just the extension. This can lead to the need for electrics to be checked out or door replaced.

 

Kitchen Extensions:

Kitchen extensions largely fall into the realms of single floor extensions, although all type of property extensions could be made use of to include additional space for a kitchen.

As an approximate guide, a single floor extension will certainly set you back from ₤ 1,000 - ₤ 2,000/ m2, with a fundamental build at the lower end of the scale as well as an outstanding build quality at the greater end at an array, with prices of ₤ 2,500/ m2 plus.

 

How to find a builder for your extension:

We will provide as much as four Single storey house extension pros locally, who will certainly provide quotations for the job you desire done. You'll get a home visit from professionals in Brentwood who'll assist you to choose the right Single storey house extension for your home prior to performing the setup. Enter your postcode to start looking currently.

Average Single storey house extension cost in Brentwood

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 Brentwood, as reported by local LeadsDoWork members.

Single storey house extension installation cost in Brentwood 2026

Labour cost £14,000
Material cost £12,000
Waste removal £3,000
Time frame: 8-12 weeks

Single storey house extension searches in June 2026

Single storey house extension Projects in Brentwood in May 2026

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Requests for quotations in Brentwood in May 2026

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Requests for Single storey house extension quotations in Brentwood in May 2026. 0% change from April 2026.

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Requests for Single storey house extension quotations in Essex in May 2026. 0% change from April 2026.

Source: Numbers calculated based on the search volumes in major search engines

Single storey house extension searches in cities and towns near Brentwood May 2026

Brentwood

Brentwood is situated in the district of Essex within the East of England and sits only 20 miles from the capital city of London. Brentwood is definitely an affluent suburban town, which while remaining small continues to be growing and it has a population of 73,000. It was considered as Britain's nineteenth richest town in 2008 and major redevelopment work is scheduled to cost between £3 million and £7 million. For home enhancements you're thinking about inside the town of Brentwood, be sure you make use of reliable professionals to get the most from your money.

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Single storey house extension pros in Brentwood

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...

Latest review

Angela A., HP1
3

House Extensions | Single Storey 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...

Similar Customer Enquiries for Single storey house extension in Brentwood

11 Oct

House Extensions | Single Storey

Brentwood - CM14

Enquiry from: Jamila P

Start Date: 1 to 3 months

customer made an enquiry for single storey house extension and confirmed on the local quotes site they would like quotes from a builder.ms lives in the brentwood area and would like a call to discuss ...

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12 Jan

House Extensions | Single Storey

Brentwood - CM15

Enquiry from: Andy M

Start Date: 1 to 3 months

ground floor extension to back single storey timber framed side extension over double garage timber framed pitched roof time scale: 1-3 months please call to appoint

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05 Oct

House Extensions | Single Storey

Brentwood - CM13

Enquiry from: Danny H

Start Date: 1 to 3 months

Customer is currently in the process of looking for quotes to add a Single storey extension to their property. Are you the property owner: Owner of the property Property Type: Detached Looking For: Si...

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15 Feb

House Extensions | Single Storey

Brentwood - CM14

Enquiry from: Lucila H

Start Date: Less than one month

Customer is currently in the process of looking for quotes to add a Single storey extension to their property. Are you the property owner: Owner of the property Property Type: Semi detached Looking Fo...

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26 Oct

House Extensions | Single Storey

Ilford - IG5

Enquiry from: Farhath H

Start Date: Less than one month

customer in the ilford area made an enquiry a couple of projects including single storey house extension.call anytime and arrange an appointment to discuss. below is some details about this project:cu...

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23 Aug

House Extensions | Single Storey

London - E4

Enquiry from: Simon F

Start Date: 1 to 3 months

customer in london areas is looking to do a couple of projects at the moment, and would like quotes for single storey house extension.confirmed interest via sms and email at 23/08/2024 15:26.please ca...

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25 May

House Extensions | Single Storey

Woodford Green - IG8

Enquiry from: Agnieszka T

Start Date: Less than one month

customer requested quotes for single storey house extension from a builder around woodford green. they are considering a couple of projects at the moment.call anytime to arrange appointment to discuss...

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19 Oct

House Extensions | Single Storey

London - E6

Enquiry from: James M

Start Date: Less than one month

are you the property owner: owner of the property property type: terrace looking for: single storey extension do you have planning permission: no do you have plans drawn up: no do you require plumbin...

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07 Jul

House Extensions | Single Storey

Ilford - IG1

Enquiry from: Yaad P

Start Date: Immediate

customer has a extensions & conversions project they are looking to have done, specially they want quotes for single storey house extension. they are unsure of options so would like to discuss with a ...

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07 Apr

House Extensions | Single Storey

London - E11

Enquiry from: Oliver L

Start Date: Immediate

customer made an online enquiry for single storey house extension and confirmed on telephone, sms and email they would like a call with a builder to discuss prices.please call to arrange an appointmen...

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19 Mar

House Extensions | Single Storey

Woodford Green - IG8

Enquiry from: Spiro N

Start Date: Immediate

Single storey rear extension. Max 6 metres from existing stepped rear walls. Knock 2 x existing external walls down. Maybe flat roof on one half of extension and slope roof on the other half

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11 Oct

House Extensions | Single Storey

London - E6

Enquiry from: Abdul M

Start Date: 1 to 3 months

customer is currently in the process of looking for quotes to add a single storey extension to their property. are you the property owner: owner of the property property type: terrace looking for: sin...

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08 May

House Extensions | Single Storey

London - E4

Enquiry from: Bulent E

Start Date: 1 to 3 months

customer is currently in the process of looking for quotes to add a single storey extension to their property. are you the property owner: owner of the property property type: terrace looking for: sin...

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27 Feb

House Extensions | Single Storey

Woodford Green - IG8

Enquiry from: Masomeh K

Start Date: 1 to 3 months

Customer is currently in the process of looking for quotes to add a Single storey extension to their property. Are you the property owner: Owner of the property Property Type: Terrace Looking For: Sin...

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02 Sep

House Extensions | Single Storey

London - E4

Enquiry from: ATUL R

Start Date: Immediate

Customer is currently in the process of looking for quotes to add a Single storey extension to their property. Are you the property owner: Owner of the property Property Type: Semi detached Looking Fo...

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28 Aug

House Extensions | Single Storey

London - E11

Enquiry from: Dave D

Start Date: Immediate

Customer is currently in the process of looking for quotes to add a Single storey extension to their property. Are you the property owner: Owner of the property Property Type: Other Looking For: Singl...

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24 Jan

House Extensions | Single Storey

London - E6

Enquiry from: Karina B

Start Date: Immediate

Customer is currently in the process of looking for quotes to add a Single storey extension to their property. Are you the property owner: Owner of the property Property Type: Semi detached Looking Fo...

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07 Oct

House Extensions | Single Storey

Woodford Green - IG8

Enquiry from: Ravi R

Start Date: Immediate

Customer is currently in the process of looking for quotes to add a Single storey extension to their property. Are you the property owner: Owner of the property Property Type: Terrace Looking For: Sin...

Post a similar request >

31 Aug

House Extensions | Single Storey

Ilford - IG1

Enquiry from: Jagandeep N

Start Date: 1 to 3 months

Customer is currently in the process of looking for quotes to add a Single storey extension to their property. Are you the property owner: Relative of Owner Property Type: Terrace Looking For: Single ...

Post a similar request >

08 May

House Extensions | Single Storey

Loughton - IG10

Enquiry from: Ricardo S

Start Date: Immediate

Customer is currently in the process of looking for quotes to add a Single storey extension to their property. Are you the property owner: Owner of the property Property Type: Terrace Looking For: Sin...

Post a similar request >

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FAQs

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).

does a single storey extension add value to your house?

Does A Single Storey Extension Add Value To Your House?

When you’re looking to construct a single storey extension or perhaps you’re just searching for means to increase the value of your property, this question always pops up. The short and simple answer to this question is a resounding yes, a single storey extension can go a long way to increase the value of your property. Just like any other home improvement, when done right, adding a little extra living space is one of the top things you can probably think of that’ll provide a cool increase in your property’s value. However, before you rush in you must also take note of some factors so you can be certain a single storey extension is the right option for you. These factors include the quality of the build, complexity of the build, cost of the build versus the value gain, ceiling price in the area, finance costs as well as the inconveniences and stress.

Generally, the average cost of a single storey extension can range from £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. So it’s important to know the value they’ll add to your house before deciding to make such an investment.

The value added to your property will depend largely on the quality and size of your single storey extension. The value is usually calculated by estate agents using the number of bedrooms, bathrooms as well as the floor area. Inside London, it’ll typically be priced at £5,000 to £10,000 per square metre, while outside London should be within the range of £900 to £2,000 per square metre.

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.

How long does a small extension take?

If you’re planning to build a small extension on your property, you’ll most likely want to know the length of time it’ll take to complete the home extension. Just like many other home improvement projects, it’s impossible to provide a specific number of day in which your project will be completed as the duration is based on a number of influencing factors. This includes the size of the development work as well as whether or not you plan to live in the house when the work is being done. In this article, we’re going to give you a breakdown of the processes that’s involved in building a small single storey extension alongside the duration for each so you can have an idea of how long your small extension project will take. Let’s take a look!

✓ A small single storey extension will normally take about 3 months to be completed.

✓ Site preparation is the first step in the process and it’ll take up to 2 weeks the dig out the footings and prepare foundations. Followed by a further 2 weeks to fit the damp course as well as any drains required around the extension.

✓ The 5th week is spent on working on the external walls and putting in place blockwork to deliver cavity wall insulation.

✓ The next 2 weeks will be spent on installing the roof structure as well as internal walls.

✓ Once done. The builders will make the structure weather proof and electricians or gas fitters will be on site to add power to the extension. This will be followed by internal walls’ plastering as well as breaking into your main house.

✓ After this, when the plaster is dry and decoration completed, units or furniture will then be installed.

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