House Extension in city

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House Extension in city

House extension includes a vast array of advantages that makes it very easy to see why the extension could be a excellent uptick in the possible price of your residential or commercial property in regards to sales. So if you're wanting to develop a brand-new residence extension yet still not convinced regarding the project, we're below to help you. Being totally conscious any type of residence construction job is usually a heavy financial investment, there's a significant need to be set on your decision prior to arranging the beginning of any work. So are house extensions worth it? Below are several of the top advantages used by house extensions to aid you decide if it's the most ideal path for you.

 

What's Involved in Including an Extension?

The steps will certainly vary depending on the extent of your extension, however you can anticipate some, otherwise all, of the listed below to be entailed when including an expansion to your residence:

 

  1. Getting Building Regulations or Planning Permission (if needed as the extension is larger than permitted development).
  2. Checking your leasehold agreement (if suitable) to make certain you can do what you intend to do.
  3. Hiring an architect  to prepare the plans, considering your planned usage ( kitchen area, restroom, research study).
  4. Hiring a competent builder with experience of larger projects.
  5. Contacting your insurance policy service provider to let them recognize of the intended work ahead of it starting.
  6. Acquiring parking allows if required for your specialists to ensure they have simple access to your residential property.
  7. Seeing to it all planned job drops within allowed allowables.
  8. Clearing up the space as well as digging deep into if necessary, including the removal of trees.
  9. Structure job can begin.

 

What is the price of a house extension in city?

If you're taking into consideration including a two storey house extension, then establishing a budget for this task would certainly be a fantastic means to begin. Similar to a back extension, a two storey extension normally leaves the remainder of the structure needing some work as well as, because of its dimension, this may imply the re-development of the whole house - which is why they can be extremely expensive. Some of the other influencing elements that can have huge impact on a 2 floor house extension expense consists of: your location, the dimension of the construct, complexity of the design (anything beyond the standard develop will usually call for more knowledge as well as time), the glazing to be included (the extra the glass used in the job, the much more the material price), in addition to the team utilized.

Average House extensions cost in Greater London

The regular cost of House extensions are £65,000 in Greater 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 Greater London, as reported by local LeadsDoWork members.

House extensions installation cost in Greater London 2025

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

House extensions searches in June 2025

House extensions Projects in Greater London in May 2025

318,117

Requests for quotations in Greater London in May 2025

1,050

Requests for House extensions quotations in Greater London in May 2025. 14% change from April 2025.

5,901

Requests for House extensions quotations in United Kingdom in May 2025. -2% change from April 2025.

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

House extensions searches in counties near Greater London May 2025

1,000

Requests for quotations in London County in May 2025

50

Requests for quotations in Middlesex in May 2025

Greater London

The Greater London region has the second biggest population in the UK, just behind the South East. However, with the smallest land area of all 9 English zones, it comes with a large population density of 5,701 people per square kilometre; this is more than ten times of any other English region. London continues to increase in size over time, becoming increasingly industrialised. The City of London at the same time ranks as one of the most expensive urban centres on the planet, beside Tokyo and Moscow. For your household developments be sure to work with trustworthy firms and guarantee an excellent finish you will be proud of.

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Similar Customer Enquiries for House extensions in Greater London

12 May

House Extensions

Pinner - HA5

Enquiry from: Mohamed H

Start Date: Immediate

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

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06 May

House Extensions

London - NW6

Enquiry from: Noam G

Start Date: Immediate

hi, i'm in the process of buying a house, which needs a fair bit of work. this would include converting an attached garage into a bedroom, knocking down a couple of walls, doing a small extension int...

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06 May

House Extensions

Ilford - IG1

Enquiry from: Evangeline S

Start Date: 1 to 3 months

customer made an online enquiry for house extension and confirmed on sms and email they would like a call with a builder to discuss prices.please call to arrange an appointment to quote. are you the p...

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22 Apr

House Extensions

London - E17

Enquiry from: Laura J

Start Date: Immediate

What type of property is this for? House What type of extension do you need? Single storey extension When was the property built? 1921 to 1979 How many stories is the current building? 2 Storeys D...

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15 Apr

House Extensions

London - SW19

Enquiry from: Intisar C

Start Date: Immediate

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 and email at 15/04/2025 17:16.please call to arrange ...

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11 Apr

House Extensions

Feltham - TW13

Enquiry from: Nijat M

Start Date: Immediate

Customer is looking for House Extension quotes. They are unsure of options so would like to discuss. Confirmed interest via Customer lives in Feltham area Please call to arrange an appointment

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09 Apr

House Extensions

London - SW16

Enquiry from: Andrea C

Start Date: Immediate

Customer is looking for House Extension quotes. They are unsure of options so would like to discuss. Confirmed interest via SMS/ Customer lives in London area Please call to arrange an appointment

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06 Mar

House Extensions

Morden - SM4

Enquiry from: Paul R

Start Date: Immediate

Customer in Morden area made an enquiry for House Extension online. Please call to arrange an appointment to discuss options

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02 Mar

House Extensions

London - SE9

Enquiry from: Amir A

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Customer made enquiry for House Extension quotes online. Homeowner lives in London area. Please call to arrange appointment

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23 Feb

House Extensions

Feltham - TW13

Enquiry from: Sandesh R

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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, SMS at 15:17, email at 15:17 Please call to dis...

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22 Feb

House Extensions

London - SE25

Enquiry from: Zack K

Start Date: 1 to 3 months

sip construction for wraparound kitchen extension project with planning permission granted and structural & building regulations drawings available/in place. customer is currently in the process of l...

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18 Feb

House Extensions

London - E4

Enquiry from: Mia G

Start Date: Immediate

Would like to get a cost estimate for loft and rear extension for a house that we are looking to purchase on Old Church Road, Chingford.

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23 Jan

House Extensions

Harrow - HA1

Enquiry from: Mahmood K

Start Date: Immediate

Flat roof kitchen extension at rear. Labour only builder required. All my material

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09 Jan

House Extensions

London - NW2

Enquiry from: Naciye H

Start Date: Immediate

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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19 Nov

House Extensions

Hounslow - TW3

Enquiry from: Sheldon R

Start Date: Immediate

Customer made an online enquiry for House Extension via one of our websites. Confirmed via . Please call to arrange an appointment to quote.

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21 Oct

House Extensions

London - SE26

Enquiry from: Ga R

Start Date: Immediate

Customer made an online enquiry for House Extension via one of our websites. Confirmed via . Please call to arrange an appointment to quote.

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16 Oct

House Extensions

London - SE25

Enquiry from: Zack K

Start Date: Immediate

Ground floor wraparound extension

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14 Oct

House Extensions

Pinner - HA5

Enquiry from: Farhana C

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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 via phone at 16:26 Please call to discuss and a...

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09 Oct

House Extensions

Ilford - IG2

Enquiry from: Jaya S

Start Date: Immediate

customer made an online enquiry for house extension and confirmed on sms and email they would like a call with a builder to discuss prices.please call to arrange an appointment to quote. are you the p...

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23 Sep

House Extensions

Wembley - HA9

Enquiry from: Mazher K

Start Date: Immediate

what type of job are you looking to have done: house extension property type: semi detached have you got a rough idea of the design you would like: some ideas how many bedrooms are you looking to have...

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FAQs

where to start with a house extension?

Have you decided to improve your property instead of moving? The common problem most homeowners face after deciding to embark on a home extension project is not knowing where to start. In this article we’ll walk you through everything you need to consider and put in place before commencement of your home extension project.

• Is the extension worth it?

Before breaking the bank, you must be sure that the project will add good value to your home. In terms of “value, this is not only limited to the financial gain after disposal of the property, but also several other juicy benefits to be derived from extending your home like an extra living space for the household to spread out and more.

• Do you need a planning permission?

Check with your local authority to determine whether or not you’ll require to submit an application. You can also consult a building expert like an architect for advice.

• What are the building regulation?

Even though planning permission can be dodged, you can not avoid building regulations. These regulations are the set national minimum standards for construction and design which you must comply with to ensure the safety of the individuals in and around it.

• Who will design the extension?

You have to decided whether you’ll hire a professional architect to design the extension or not.

• Who will manage the building work?

If your home extension project is designed and built by a professional company, they’ll be responsible for the management. However, if you decide to use an architect or designed it yourself, you’ll have to hire a main contractor to manage the build.

• How to set the budget?

There are so many factors that can affect the cost of an extension, so it’s better to get the costs from your builder before proceeding.

• Do I need yo inform my home insurance firm?

Absolutely! This is very important as the new extension may affect the rebuilding cost of your property which could have an impact on the policy premium.

• Do I need to inform my neighbours?

It’s very important to discuss your plan with your neighbours before applying for a planning permission and communicate about the concerns they might have.

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 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.

Can an extension add value to my home?

Yes. Most extensions will add substantial value to your home, and you may find that the extension adds more value than it cost. However, it’s important to be sure that the home remains balanced. Extending your garage and leaving your property with no parking spaces, for example, may impact your ability to sell.

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