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House Extension in city

House extension comes with a wide variety of benefits which makes it easy to see why the extension could be a excellent uptick in the possible rate of your property in terms of sales. So if you're seeking to construct a brand-new residence extension however still not convinced about the job, we're below to help you. Being completely mindful any house building and construction work is normally a heavy investment, there's a huge need to be set on your choice before arranging the beginning of any type of job. So are house extensions worth it? Below are a few of the leading benefits provided by house extensions to assist you decide if it's one of the most ideal route for you.

 

What's Involved in Including an Extension?

The steps will differ depending on the range of your extension, however you can anticipate some, if not all, of the below to be included when including an expansion to your home:

 

  1. Obtaining Building Regulations or Planning Permission (if required as the extension is larger than permitted development).
  2. Checking your leasehold contract (if appropriate) to ensure you can do what you wish to do.
  3. Getting an architect  to prepare the plans, considering your planned use ( kitchen area, shower room, study).
  4. Hiring a competent builder with experience of larger projects.
  5. Calling your insurance supplier to let them understand of the planned work ahead of it starting.
  6. Obtaining car parking allows if required for your specialists to ensure they have very easy access to your residential property.
  7. Making sure all intended work drops within permitted allowables.
  8. Clearing the space as well as digging deep into if essential, including the elimination of trees.
  9. Structure job can begin.

 

What is the cost of a house extension in city?

If you're considering adding a 2 floor house extension, then setting a budget for this job would be a wonderful way to start. Similar to a back extension, a 2 storey extension normally leaves the remainder of the building needing some job and also, because of its size, this may imply the re-development of the whole house - which is why they can be very costly. Several of the various other influencing variables that can have large effect on a two storey house extension price consists of: your area, the dimension of the develop, intricacy of the design (anything beyond the standard develop will usually need more know-how and also time), the glazing to be incorporated (the more the glass utilized in the job, the more the product cost), as well as the team used.

Average House extensions cost in Northolt

The regular cost of House extensions are £53,000 in Northolt. Costs vary based upon the materials and the company picked. The upper price range can be as high as £75,600. The material costs are in most cases around£10,500.

Average price per House extensions job in 2025

Avg. price low

Avg. price low
£32,400

Avg. price

Avg. price
£53,000

Avg. price high

Avg. price high
£75,600

£76100

£57075

£38050

£19025

£0

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

House extensions installation cost in Northolt 2025

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

House extensions searches in February 2025

House extensions Projects in Northolt in January 2025

1,307

Requests for quotations in Northolt in January 2025

7

Requests for House extensions quotations in Northolt in January 2025. 17% change from December 2024.

50

Requests for House extensions quotations in Middlesex in January 2025. 25% change from December 2024.

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

House extensions searches in cities and towns near Northolt January 2025

11

Requests for quotations in Southall in January 2025

9

Requests for quotations in Uxbridge in January 2025

9

Requests for quotations in Greenford in January 2025

7

Requests for quotations in Hayes in January 2025

7

Requests for quotations in Northolt in January 2025

Northolt

The northwest London town of Northolt is inside the Borough of Ealing and has a population over 40,000. This is a significant increase from 1801, when there were just 336 residents. For all home developments within the Northolt area, you'll want to make use of vetted specialists to get the very best cost for any work you would like concluded.

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House extensions pros in Northolt

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.

Tectra Partnership Ltd

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

Latest review

Deepak S., KT10
5

House Extensions in Esher

excellent communication

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

Similar Customer Enquiries for House extensions in Northolt

05 Mar

House Extensions

Northolt - UB5

Enquiry from: Boma F

Start Date: 1 to 3 months

i will like the extension to the kitchen and dinning room to the rear are you the property owner: owner of the property property type: semi detached looking for: single storey extension do you have pl...

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04 Mar

House Extensions

Northolt - UB5

Enquiry from: Arusa S

Start Date: Immediate

side double story ext +/- loft conversion

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07 Dec

House Extensions

Northolt - UB5

Enquiry from: Joanna D

Start Date: Immediate

knocking existing diner, garage , small bathroom and laundry room into one open plan area, then create a new child bedroom. creating functional open plan space which includes (bedroom, dining and kitc...

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19 Nov

House Extensions

Northolt - UB5

Enquiry from: Sonata A

Start Date: Immediate

All width extention aprox. 5.1m x 3m

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03 Aug

House Extensions

Northolt - UB5

Enquiry from: Shamal R

Start Date: 1 to 3 months

Homeowner Please contact to appoint

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30 Apr

House Extensions

Northolt - UB5

Enquiry from: Sarah L

Start Date: Less than one month

Are you the property owner: Owner of the property Property Type: Other How many bedrooms does the property have: 3-4 Bedrooms Other Forms: 45 Agreed to recieve quotes for selected products: Yes Pleas...

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05 Feb

House Extensions

Northolt - UB5

Enquiry from: Bilton H

Start Date: Immediate

Rear signal extension 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: T...

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08 Jul

House Extensions

Northolt - UB5

Enquiry from: Leighan E

Start Date: Immediate

Are you the property owner: Owner of the property Is the work for domestic or commercial purposes: Domestic Other Forms: 18, 19, 45 Agreed to recieve quotes for selected products: Yes Please call to ...

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06 Jul

House Extensions

Northolt - UB5

Enquiry from: Wole O

Start Date: Less than one month

Are you the property owner: Owner of the property Property Type: Semi detached How many bedrooms does the property have: 3-4 Bedrooms Other Forms: 17, 45 Agreed to recieve quotes for selected product...

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04 Jun

House Extensions

Northolt - UB5

Enquiry from: Raj T

Start Date: Immediate

Customer visited the myhouseextension.co.uk site and submitted an enquiry. Property type: Semi detached, Work description: We want convert the 3 bedroom to a five bedroom with kitchen

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03 Apr

House Extensions

Northolt - UB5

Enquiry from: Haran S

Start Date: Less than one month

Are you the property owner: Owner of the property Property Type: Semi detached How many bedrooms does the property have: 5+ Bedrooms Other Forms: 17, 45, 35, 16, 96 Agreed to recieve quotes for selec...

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03 Mar

House Extensions

Northolt - UB5

Enquiry from: Mostafa S

Start Date: Immediate

Customer visited the myhouseextension.co.uk site and submitted an enquiry. Property type: Semi detached, Work description: I have already a 3 meter back extention and looking for an extra 3 meter Ba...

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21 Feb

House Extensions

Northolt - UB5

Enquiry from: Mrs B

Start Date: Immediate

Home owner House Extension Please call to appoint

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19 Jul

House Extensions

Northolt - UB5

Enquiry from: Bader M

Start Date: 3+ months

Customer visited the myhouseextension.co.uk site and submitted an enquiry. Property type: Semi detached, Work description: A side extension of single story, its approximately 12m by 2.5m this s...

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19 Jun

House Extensions

Northolt - UB5

Enquiry from: Waldemar W

Start Date: 3+ months

Customer visited the myhouseextension.co.uk site and submitted an enquiry. Property type: Semi detached, Work description: loft extension required Are you the property owner: Owner of the property...

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13 Mar

House Extensions

Northolt - UB5

Enquiry from: Kul S

Start Date: Immediate

Extending on side with small shower, Kitchen, Roof window, move the drainage hole further away, 3 doors, 2 windows, Electrical and plumbing works.

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24 Feb

House Extensions

Northolt - UB5

Enquiry from: Chris C

Start Date: Immediate

Extension to back of house - 2 storey Are you the property owner: Owner of the property Property Type: Semi detached Looking For: Double storey extension Do you have planning permission: No Would you ...

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07 Feb

House Extensions

Northolt - UB5

Enquiry from: A

Start Date: Immediate

I need to build side extension, 5 meters in length x 235 wide and flat roof

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28 Jan

House Extensions

Northolt - UB5

Enquiry from: Ashis B

Start Date: 3+ months

Home owner Double storey side extension Width=3M Length=7M Roof: Pitched Option 2: Single Storey side extension Same dimensions as above Roof: Flat Full plans and Planning permission in Place...

Post a similar request >

17 Nov

House Extensions

Northolt - UB5

Enquiry from: P P

Start Date: Immediate

Home Owner Single Storey Extension Customer Requires Assistance with Plans and Planning Permission Please Call to Appoint *

Post a similar request >

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FAQs

how much is a double house extension?

A double house extension is basically a construction to any aspect of your house that elevates up to offer two floors of space. It can be structured to suit your existing home in two storeys or as a side wing on a taller property. If you’re considering building a double house extension, then estimating the cost is a very important task to do before commencing the project. In this article, we’ll give you an idea of the cost of a double house extension so you can estimate yours accordingly.

The double house extension cost depends on several factors that’s specific to your home as well as your design choice. These includes:

• Location of your property. Places like London and the southeast will generally cost more than the other regions due to higher demands.

• Accessibility of the site. The ease of your site’s accessibility also plays a key role in the price.

• Size of the extension. The more the extension’s size in footprint and square metres, the higher the possible costs.

• Materials used in making the roof as well as the complexity of the roof design.

• Your choice of finishing. These includes flooring window and door frames, glazing, underfloor heating and roof lights.

• Your property’s soil type. Different types of soil requires varying treatments as well as materials to develop solid foundations.

Constructing a double house extension is a quite simple build in terms of technicality when its to the side or rear of your house as this can also help you save some money. Generally, considerably expanding your home’s space by building a double house extension will cost within the range of £1,500 per m2 to about £2,800 per m2.

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 to finance a house extension?

Do you want to beautify and increase the value of your home? If yes, a refurb and house extension is definitely a great option to consider. Depending on your home extension project, the value that’ll be added to your home’s resale value varies. However, the cost of completing a house extension project can be huge, so you just might want to consider your financing options. Fortunately, there are various options through which your house extension project can be funded with each having its own pros and cons. Your specific circumstances will determine the one that’s going to work best for you, so let’s take a look at some of the best options to help you fund your project.

• Home Remortgaging

The process whereby a mortgage is transferred from one provider to the other is known as remortgaging. This is usually done to generate funds for a project by entering a more lengthy repayment term commitment when switching. If you want to raise your funds in a quick manner, this process works best.

• Savings

This is a good reason to cultivate a good saving habits. If you’ve been able to save up some mega bucks then you’d probably won’t have to borrow money to finance your house extension.

• Unsecured Loans

If you do not buy into the idea of borrowing more against your property, you may just be able to apply for an unsecured loan especially if you have a good credit record. A secured loan makes use of collaterals like a car or house to serve as a cover for the lender, meanwhile an unsecured loan is based mainly on the credit managing history of the borrower.

• Credit Card

There are some great benefits that comes with financing your small or medium scale extension project with your credit card. Not only does it offer some real lifeline if problems arise during the project, but you can also avoid paying excessive interest on the investment by ensuring your deal has a 0% introductory rate.

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