House Extension in city

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House Extension in city

House extension comes with a variety of advantages which makes it simple to see why the extension could be a great uptick in the possible cost of your residential or commercial property in terms of sales. So if you're wanting to build a brand-new house extension but still not convinced concerning the job, we're below to aid you. Being completely aware any type of residence building and construction job is typically a heavy financial investment, there's a huge requirement to be set on your decision prior to setting up the beginning of any kind of job. So are house extensions worth it? Below are a few of the leading benefits provided by house extensions to assist you choose if it's one of the most ideal course for you.

 

What's Associated with Adding an Extension?

The actions will vary relying on the range of your extension, but you can anticipate some, otherwise all, of the below to be involved when including an extension to your house:

 

  1. Getting Building Regulations or Planning Permission (if needed as the extension is larger than permitted development).
  2. Inspecting your leasehold arrangement (if appropriate) to see to it you can do what you intend to do.
  3. Hiring an architect  to draw the plans, considering your expected use ( kitchen area, washroom, research study).
  4. Hiring a competent builder with experience of larger projects.
  5. Contacting your insurance carrier to allow them recognize of the intended work ahead of it beginning.
  6. Getting car parking permits if needed for your specialists to ensure they have simple access to your building.
  7. Making certain all intended job drops within permitted allowables.
  8. Cleaning the space as well as excavating if necessary, including the removal of trees.
  9. Structure job can begin.

 

What is the cost of a house extension in city?

If you're taking into consideration including a two floor house extension, then establishing a budget for this job would be a excellent means to get going. Similar to a back extension, a 2 floor extension usually leaves the rest of the building requiring some job as well as, as a result of its dimension, this might imply the re-development of the whole house - which is why they can be very costly. Several of the other affecting aspects that can have large influence on a two storey house extension cost consists of: your area, the size of the develop, complexity of the layout (anything past the standard construct will generally need even more experience and also time), the glazing to be incorporated (the much more the glass made use of in the project, the more the product cost), along with the group made use of.

Average House extensions cost in London

The regular cost of House extensions are £65,000 in London. Costs vary based upon the materials and the company picked. The upper price range can be as high as £96,334. The material costs are in most cases around£10,500.

Average price per House extensions job in 2025

Avg. price low

Avg. price low
£35,334

Avg. price

Avg. price
£65,000

Avg. price high

Avg. price high
£96,334

£96900

£72675

£48450

£24225

£0

Prices based on actual House extensions costs for London, as reported by local LeadsDoWork members.

House extensions installation cost in London 2025

Labour cost £27,000
Material cost £10,500
Waste removal £2,500
Time frame: 10-14 weeks

House extensions searches in January 2025

House extensions Projects in London in December 2024

262,017

Requests for quotations in London in December 2024

720

Requests for House extensions quotations in London in December 2024. -18% change from November 2024.

1,000

Requests for House extensions quotations in London County in December 2024. 14% change from November 2024.

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

House extensions searches in cities and towns near London December 2024

720

Requests for quotations in London in December 2024

London

London is the capital city of England and it's still caught in the euphoria of the 2012 Olympic Games which appeared in the city. The multi-million pound project really helped to provide a range of new jobs across the city and saw a number of housing developments mainly in the Stratford region. London remains to be the most popular visitor city in Britain with sight-seeing opportunities such as Buckingham Palace, Big Ben, Madame Tussauds and also the Thames River. Homes are diverse as well, dating back to Tudor, Georgian and Victorians eras.

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House extensions 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

Julian F., HP2
4

House Extensions in Hemel Hempstead

No quote received

Dream the Build

19 review(s)
Based: in London, EC1V 2NX

DREAM the Build. Ltd ' Constructing your Vision Making home development exciting, fun and asset building experience , future proofing household & investors Who we are ? Starting fresh in a new country is never easy, but what we did Catal...

Latest review

Patricia Z., SE21
5

House Extensions in London

Great consultation by Catalin Spent a lot of time with us understanding the project and various options.

Blue SKY Developers Limited

1 review(s)
Based: in London, NW3 6DX

Blue Sky Developers is a registered company in the UK that specialises in all building services you could require. We are based in North London but carry work out all around London.

Latest review

Vikram D., NW7
4

House Extensions in Mill Hill

Very straight and helpful. Provided useful advice and suggestions.

Nicholas James Construction

7 review(s)
Based: in Bromley, BR1 3AX

From past fifteen years we have been established as the finest building and construction service provider to clients in Bromley and its surrounding areas.

Latest review

Jagdish K., HA3
5

House Extensions in Harrow

Absolutely pleasant appointment. Very patient and polite, listened carefully to detail and more of my background and his...

Tectra Partnership Ltd

1 review(s)
Based: in Slough, SL3 0JE

Latest review

Deepak S., KT10
5

House Extensions in Esher

excellent communication

LW Building Service

2 review(s)
Based: in London, SE20 8AG

Latest review

Rosa S., SE20
3

House Extensions in London

I have not yet finalised quotation

JPA Building Construction LTD

1 review(s)
Based: in Twickenham , TW1 1AG

Latest review

Rosa S., SE20
5

House Extensions in London

Very nice and helpful unfortunately I am looking for a builder who lives nearby my property

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09 Jan

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Customer made an enquiry for House Extension via one of our websites. Looking at various options they would like to discuss directly Confirmed interest Please call to discuss and arrange appointment t...

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refurbishment of existing extension, including knocking through existing wall between kitchen and backroom; and replacing roof. are you the property owner: owner of the property property type: terrace...

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22 Aug

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customer in london area has requested that we arrange quotes for their house extension project.mr are considering various options and would like to discuss with a builder directly.please call to discu...

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House extensions Lead House extensions Lead

mr requested quotes for house extension from a builder around london. they are considering a couple of projects at the moment.call anytime to arrange appointment to discuss. the information below is w...

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customer in london area has requested that we arrange quotes for their house extension project.mr are considering various options and would like to discuss with a builder directly.please call to discu...

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London - E13

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mrs requested quotes for house extension from a builder around london. they are considering a couple of projects at the moment.call anytime to arrange appointment to discuss. the information below is ...

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customer in london areas is looking to do a couple of projects at the moment, and would like quotes for house extension.confirmed interest via sms at 21/07/2023 22:07.please call to arrange appointmen...

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FAQs

Can I extend the front of my house?

When it comes to extending a home, the rear of the house often comes to mind a lot more than the front. However, this doesn’t mean that you can’t extend the front of your house. This can be done either as part of a renovation project whereby the entire house is incorporated or it can also be done in isolation. It’s possible to extend the front of your house without the need to apply for a planning permission, however, there are a bunch of limitations you’d have to comply with if you wish to carry out with such a project. Sometimes, this may imply that extending to the front of your home is more tedious and tasking than extending your home’s rear. So exactly how far can you extend the front of your home without planning permission?

 

The short and simple answer to this question is 2 metres square area with a height not more than 3 metres. Generally, you do not need a planning permission to build a front porch as long as its area doesn’t go beyond 2 square metres from a public road or walkway. Also, a tiled or slated roof can be as much as 4 metres but other roofs must not go beyond 3 metres in height. If you want to extend the front of your home beyond the restrictions specified, then you’ll have to apply for a planning permission.

 

Extending the front of home can be quite costly, but this can be controlled by not building to the extension to the highest specification, not including an extension on kitchens or bathrooms and more.

when do you need planning permission for a house extension?

If you’re planning on adding a house extension to your property, you’d probably be worried about whether or not your proposed extension would require a planing permission. Well, it may be relieving to know that not every house extension project would require a formal consent, and in fact, several extensions are covered by the permitted development rights. Not only can this save you a considerable amount of time especially at the project’s planning phase, but it’ll also save you money on the application fee. In the UK, single storey extensions to the house’s rear can be 3 metres deep for both semi detached houses and terraces or 8 metres deep for detached homes.

So how do you know when you’d require a planning permission for your home extension? Well, if your extension plan fits these criteria explained below, then your project is most likely going to be allowable as a permitted development.

• Extensions, which includes previous additions, must not go beyond half of the original house’s total surrounding land area.

• The main elevation, or side elevation where it fronts the highway, must not be extended forward.

• For single storeys, the rear additions must not extend more than the original house’s rear by more than 3 metres in both semi attached homes and terraces (4 metres for detached houses).

• Extensions to the side must be a single storey with a height not exceeding 4 metres and not going beyond 50% of the original house’s width.

• Extensions hat within 2 metres of a boundary should have a eaves height not more than 3 metres.

• Multi storey addition must not extend beyond the original house’s rear wall by a maximum of 3 metres or 7 metres of the boundary opposite the rear wall.

• Permitted development rights do not apply in listed buildings or designated areas.

how big can my house extension be?

The holy grail of home extensions is basically the need for additional space for living as well as leisure. However, before commencing your home extension project, you’d probably want to know just how big your new building can be. In this article, you’ll find the answer to this question which is also frequently asked by many other home or property owners in the UK.

Besides your budget, there are two other major influencing factors that can determine just how much extra room that can be added. These factors include whether you wish to carry out the extension project under Permitted Development rights which is usually for a smaller project or you’d prefer to opt for a larger project which is covered by Planning Permission.

Apart from the limitations in the size of an extension under Permitted Development, the extensions are also a lot more affordable and consumes less time when compared to the extensions under planning permission. So what exactly is the size limit for an extension under Permitted Development and the ones under Planning Permission?

For a single storey extension, the maximum size that can be constructed without having to submit an application for Planning Permission includes:

• An extension should have a maximum length of 6m, if you reside in a terraced home or a semi-detached property.

• Extensions for detached properties can have a maximum length of 8m.

• The extension built must not go beyond half your garden’s area.

• The extension should have a maximum height of 4 metres, but in the event whereby the extension is situated within 2 metres of the boundary of your property, it should not exceed a height of 3 metres.

• The extension should not be higher than the highest part of the existing house’s roof.

how long do house extensions take?

If you’re about to start your house extension project and wondering how long it’ll take to complete, you’re not alone! This is one of the most common questions that’s asked by homeowners in the UK and across the globe. However, there’s no single precise answer for this as there are multiple factors that’ll affect the length of time it’ll take to complete your home extension. These factors include the size of the construction work as well as whether you’re planning to live in the house after completion or otherwise.

For a single extension, the length of time it’ll take to complete the home extension is normally up to 3 months. So let’s break this down:

As you would have expected, the first step to be taken is the preparation of the site. You start by digging out the footing and preparing the foundation which should take about 2 weeks. This is then followed by the damp course installation as well as the fitting of any drains needed around the extension which will also take a further 2 weeks.

The 5th week will be for the construction of the external walls as well as putting the blockwork in place for the provision of the cavity wall insulation. A further 2 weeks after this, will be dedicated to the installation of the roof structure and the internal walls.

It’s at this junction that you’ll call on your weather proof installer to fit in your uPVC windows and doors. Once done, the gas fitters and electricians will have to be on site to connect power to your new extension building. Subsequently, this will be followed by internal wall plastering as well as breaking through your main house. Once the plaster is dried, decorations completed and all the required furniture and units installed, the extension is ready for use.

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