Ground floor House Extension in London

Find Single Storey House Extension Prices in London

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Ground floor House Extension in London

Are you searching for Single storey house extension in London? Our network of builders can aid with your task. Every one of our Builder in London are examined so you can see local honest reviews, when the business was formed, rankings, satisfaction as well as day rate,  enabling you to make the appropriate decision on who to hire. Allow us take the inconvenience out of locating approximately 4 experts for your Single storey house extension task.

Single storey extensions are a great way to add space and value to your home. A single storey extension can be quite cost effective and they are suitable for a multitude of houses. Smaller single storey home extensions can be built without the need to make an application for planning permission because they are covered under permitted development rights. Substantial single storey extensions will still need planning permission. Single storey home extensions can also frequently be positioned to either the side or back of a home. Single storey home extensions can be used to extend kitchen areas or to add 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 big airy space that creates a seamless transition in to the garden. While single storey home extensions may appear less complicated than other kinds of extension, careful planning remains required to ensure that the new space is practical and attractive. Certified architects and building contractors will be able to advise you on the most effective design for your home extension, considering 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 accentuate your existing property and use similar materials for its construction or be made to contrast, providing an impressive effect by using differing materials.

 

Factors that effect Single Storey Extension Costs

There are a couple of variables to bear in mind when you are setting your budget. The primary aspects that influence the cost of a single storey extension are the size and the coating. However there are other variables that it deserves keeping in mind while you are making your plans.

High-priced Groundworks Needed

If it is challenging to dig the structures as well as lay the ground for your extension, after that this can increase the cost of your extensions. This might be the situation if the ground is hard to work with. Debris in the ground can likewise raise the costs.

  • Quality of Fixtures and also Fitting
    After the dimension of the extension, the following largest element is the quality of the coating. Selecting high-end options can lead to the last price being more than dual what it would be when picking the fundamental choices.
  • Dimension of Extension
    When you are obtaining an extension on your residence, the single biggest factor that will impact the price of your extension is the size of it. The larger the extension is, the much more you will wind up paying. If the location inside the extension is easy, with no inner wall surfaces, then this will certainly reduce the price per m2 a little. Nevertheless, despite this in mind. The bigger the area of your extension, the extra you pay.
  • Type of Extension
    The kind of extension you pick will certainly go a long way in the direction of determining just how large your extension will certainly be. Side return extensions produce the smallest additional space so are often the cheapest option, while a wraparound kitchen area extension will certainly create one of the most room as well as have one of the most high-priced fittings and also fixtures.
  • Building Regulations
    For the most part, developing laws do not add a great deal of price to a structure project. Nevertheless, if you are building an extension onto an older home, there may be some unanticipated costs. This is specifically true if the residence has actually not just recently been upgraded. Structure guidelines will relate to your whole house, not simply the extension. This can cause the demand for electrics to be considered or door changed.

 

Kitchen Extensions:

Kitchen extensions greatly fall into the areas of single floor extensions, although all kinds of house extensions could be utilized to integrate additional room for a kitchen.

As an approximate guide, a single floor extension will cost from ₤ 1,000 - ₤ 2,000/ m2, with a basic develop at the reduced end of the scale and an exceptional 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 supply up to 4 Single storey house extension pros locally, that will certainly use quotations for the work you desire done. You'll get a property visit from professionals in London that'll help you to select the right Single storey house extension for your house before carrying out the setup. Enter your postcode to begin searching now.

Average Single storey house extension cost in London

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
£30,800

Avg. price

Avg. price
£46,000

Avg. price high

Avg. price high
£61,200

£61700

£46275

£30850

£15425

£0

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

Single storey house extension installation cost in London 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 London in May 2026

262,017

Requests for quotations in London in May 2026

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

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Requests for Single storey house extension quotations in London County 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 London May 2026

London

London is the capital city of England and it's still caught in the excitement of the 2012 Olympic Games which graced the city. The multi-million pound project helped to provide a number of brand new jobs round the city and saw a number of housing developments especially in the Stratford region. London remains the most popular visitor city in Britain with sight-seeing opportunities such as Buckingham Palace, Big Ben, Madame Tussauds and the Thames River. Houses are diverse as well, way back to Tudor, Georgian and Victorians eras.

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Single storey house extension pros in London

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 London

06 May

House Extensions | Single Storey

London - NW6

Enquiry from: Noam G

Start Date: Immediate

customer in the london 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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01 Mar

House Extensions | Single Storey

London - SE25

Enquiry from: Zack K

Start Date: 1 to 3 months

customer in the london 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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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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17 Aug

House Extensions | Single Storey

London - N11

Enquiry from: Navin H

Start Date: 1 to 3 months

i have planning approval to add a rear ground floor extension to an end terrace house. the footprint is 4.5m deep by 6.055m wide. the extension /pod is to be bolted to the rear elevation of the house...

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14 Aug

House Extensions | Single Storey

London - N11

Enquiry from: Navin H

Start Date: 1 to 3 months

i have planning approval to add a rear ground floor extension to an end terrace house. the footprint is 4.5m deep by 6.055m wide. the extension /pod is to be bolted to the rear elevation of the house...

Post a similar request >

03 Aug

House Extensions | Single Storey

London - W5

Enquiry from: Najma B

Start Date: 1 to 3 months

back kitchen extension. 4m x 6m. bifold doors. the extension would be added on to existing building so current back doorway to garden becomes door to extension. preferably some form of roof lights. t...

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22 Jul

House Extensions | Single Storey

London - N11

Enquiry from: Navin H

Start Date: 1 to 3 months

i have planning approval to add a rear ground floor extension to an end terrace house. the footprint is 4.5m deep by 6.055m wide. the extension /pod is to be bolted to the rear elevation of the house...

Post a similar request >

27 Apr

House Extensions | Single Storey

London - W13

Enquiry from: Sean S

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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08 Dec

House Extensions | Single Storey

London - SW2

Enquiry from: Winne B

Start Date: Immediate

I would like to have a side extension or/all the way around This would enable the small hallway to be much bigger with the extension giving me two oblong rooms and a wet room along the side of the ...

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29 Nov

House Extensions | Single Storey

London - SE9

Enquiry from: Lucas S

Start Date: Less than one month

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

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09 Jul

House Extensions | Single Storey

London - N13

Enquiry from: Sonya D

Start Date: 1 to 3 months

kitchen extension with bifold doors out onto patio leading to garden time scale: 1-3 months please call to appoint

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24 Apr

House Extensions | Single Storey

London - NW7

Enquiry from: Monsur M

Start Date: Immediate

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

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10 Feb

House Extensions | Single Storey

London - E3

Enquiry from: Ian P

Start Date: 1 to 3 months

considering a single storey extension to the rear of my property. time scale: 1-3 months please call to appoint

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22 Nov

House Extensions | Single Storey

London - N20

Enquiry from: Razvan C

Start Date: Immediate

single storey rear extension,double storage side extension and new loft conversion time scale: immediate please call to appoint

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19 Nov

House Extensions | Single Storey

London - SE4

Enquiry from: Charles C

Start Date: Immediate

extend width by 8 inches time scale: immediate please call to appoint

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03 Nov

House Extensions | Single Storey

London - SE24

Enquiry from: Robert W

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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31 Aug

House Extensions | Single Storey

London - W7

Enquiry from: Eden A

Start Date: Immediate

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

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25 Aug

House Extensions | Single Storey

London - SW18

Enquiry from: Len D

Start Date: Immediate

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

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17 Aug

House Extensions | Single Storey

London - N11

Enquiry from: Rashmi S

Start Date: Immediate

customer in the london 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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FAQs

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 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).

how much does a kitchen extension cost?

Being the most used room in a house, it’s little surprise kitchen extension are usually one of the most popular requests in the UK. They do not only open up a frequently used space in your home, but also goes a long way to add value to your property. However, to know the value that’ll added you must first determine the cost of building such an extension before moving forward. Generally, a typical kitchen extension will cost within the range of £20,000 to about £50,000 plus VAT, based on the size of your project as well as your location.

In reality, a single accurate cost of a kitchen extension will vary depending on a lot of influencing factors, one of which is the type of the extension. Let’s take a look!

✓ Rear extension. You may want to consider this type, if you do not have sufficient space for a side return. This will extend your kitchen into your garden which implies that you’re going to give up some green space to make this a reality. The average price to have this done in London will be about £30,000 or more including VAT, and about £20,000 plus VAT or more in other areas.

✓ Side return extension. This, normally, isn’t a huge add to your property, but will create a lot of space for your kitchen while also be a lot reasonable in terms of cost. This type will extend your home into an alleyway at the side of your property if any is available there. On average, the cost of the side return extension should be about £50,000 plus VAT in London and a lot less in the other regions.

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.

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