House Extension in city

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House Extension in city

House extension comes with a vast array of benefits that makes it easy to see why the extension could be a fantastic uptick in the prospective price of your residential property in regards to sales. So if you're aiming to construct a brand-new house extension but still not encouraged regarding the job, we're here to assist you. Being totally aware any type of house building and construction job is typically a hefty investment, there's a significant demand to be set on your decision before arranging the commencement of any work. So are house extensions worth it? Below are a few of the leading benefits provided by house extensions to aid you make a decision if it's one of the most suitable course for you.

 

What's Associated with Including an Extension?

The actions will differ depending upon the range of your extension, however you can expect some, if not all, of the below to be entailed when including an expansion to your residence:

 

  1. Acquiring Building Regulations or Planning Permission (if needed as the extension is larger than permitted development).
  2. Inspecting your leasehold contract (if relevant) to ensure you can do what you want to do.
  3. Enlisting an architect  to prepare the plans, considering your planned usage ( cooking area, restroom, office).
  4. Hiring a competent builder with experience of larger projects.
  5. Calling your insurance coverage provider to let them know of the prepared work ahead of it starting.
  6. Obtaining parking allows if needed for your contractors to guarantee they have easy accessibility to your residential property.
  7. Making sure all planned work falls within allowed allowables.
  8. Clearing up the area as well as digging deep into if required, including the elimination of trees.
  9. Structure job can start.

 

What is the price of a house extension in city?

If you're considering including a 2 floor house extension, after that establishing a allocate this task would certainly be a fantastic way to start. Similar to a back extension, a 2 floor extension generally leaves the rest of the structure needing some work as well as, as a result of its dimension, this may indicate the re-development of the entire house - which is why they can be really pricey. Several of the various other influencing factors that can have large effect on a two floor house extension price includes: your place, the dimension of the construct, intricacy of the design (anything beyond the conventional construct will normally require even more experience as well as time), the glazing to be integrated (the much more the glass utilized in the job, the much more the material price), along with the team used.

Average House extensions cost in Westminster

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

House extensions installation cost in Westminster 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 Westminster in December 2024

8,212

Requests for quotations in Westminster in December 2024

27

Requests for House extensions quotations in Westminster in December 2024. 13% change from December 2024.

1,000

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

We noted 8,212 requests for home quotes in Westminster. Of these quotation requests the amount of house extensions quotes in Westminster was 27. Quotatis would have been able to match these consumers with as many as 4 suitable fitters who were available for work in Westminster at that time. Ask for a free home survey from trustworthy companies within Westminster.

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

House extensions searches in cities and towns near Westminster December 2024

27

Requests for quotations in Westminster in December 2024

Westminster

The city of Westminster has got one of the highest populace densities in the UK, spanning lots of Central London. Contained in its boundaries are a few of London's finest tourist attractions, including Buckingham Palace, the London Eye, Downing Street and the Houses of Parliament.

Westminster was only officially developed in 1965, nonetheless its history stretches back to the Norman Conquest, with a lot of Victorian and Georgian buildings still making up large areas of the city.

Looking for House extensions in Westminster?

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House extensions pros in Westminster

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

Similar Customer Enquiries for House extensions in Westminster

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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15 Dec

House Extensions

London - SW19

Enquiry from: Alex P

Start Date: Less than one month

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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09 Nov

House Extensions

London - NW7

Enquiry from: JOHN G

Start Date: Immediate

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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21 Jul

House Extensions

London - SW5

Enquiry from: Arnab D

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 at 21/07/2023 22:07.please call to arrange appointmen...

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27 Apr

House Extensions

London - W13

Enquiry from: Sean S

Start Date: Immediate

wrap around extension and bathroom are you the property owner: owner of the property looking for: single storey extension do you have planning permission: yes do you have plans drawn up: yes do you re...

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24 Apr

House Extensions

London - NW7

Enquiry from: Monsur M

Start Date: Immediate

single story side and rear extension are you the property owner: owner of the property looking for: single storey extension do you have planning permission: yes do you have plans drawn up: yes do you ...

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16 Mar

House Extensions

London - SW11

Enquiry from: Will E

Start Date: Immediate

Extend out back, make kitchen/living space with bifold doors onto garden. Extend on top of this and add a bathroom. Please would you mind giving me a quick call tomorrow to discuss?

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21 Feb

House Extensions

London - SW11

Enquiry from: Will E

Start Date: Immediate

Extend out back, make kitchen/living space with bifold doors onto garden. Extend on top of this and add a bathroom. Please would you mind giving me a quick call tomorrow to discuss?

Post a similar request >

04 Feb

House Extensions

London - NW2

Enquiry from: Alex G

Start Date: Immediate

Full extension bulld and I would like to do loft conversation and side back extension

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20 Jan

House Extensions

London - NW9

Enquiry from: Ruta M

Start Date: Immediate

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

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16 Dec

House Extensions

London - SW19

Enquiry from: Grace C

Start Date: Immediate

6x5.5m kitchen extension using sip

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08 Dec

House Extensions

London - SW1V

Enquiry from: Sia M

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 email at 08/12/2021 02:59.please call to arrange appointm...

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05 Sep

House Extensions

London - SW6

Enquiry from: Amanda O

Start Date: Immediate

Glass extension across back of property into garden, approx 2.5 metres out

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25 Aug

House Extensions

London - SW18

Enquiry from: Len D

Start Date: Immediate

a lean to extension 3000mmx 6 000m i have the plans drawn up customer is currently in the process of looking for quotes to add a single storey extension to their property. are you the property owner:...

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23 Aug

House Extensions

London - W7

Enquiry from: Eden A

Start Date: Immediate

already have extension room but want to join the kitchen together. are you the property owner: owner of the property do you have planning permission: no property type: terrace do you require plumbing ...

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16 Aug

House Extensions

London - SW12

Enquiry from: Lucy P

Start Date: Immediate

rear extension, 3.12 depth x 3.69 width, velux windows, bi-fold doors customer is currently in the process of looking for quotes to add a single storey extension to their property. are you the proper...

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06 Aug

House Extensions

London - SW8

Enquiry from: Pep S

Start Date: Immediate

add a whole new floor on an exiting floor plate. currently 3 storeys. would like to add one more storey. customer is currently in the process of looking for quotes to add a single storey extension to...

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29 Jul

House Extensions

London - W7

Enquiry from: Eden A

Start Date: Immediate

already have extension room but want to join the kitchen together. are you the property owner: owner of the property do you have planning permission: yes property type: terrace do you require plumbing...

Post a similar request >

25 Jul

House Extensions

London - NW9

Enquiry from: Gunal K

Start Date: 1 to 3 months

the whole house need gutted and redone, and if possible build a second floor with separate entrance are you the property owner: relative of owner property type: semi detached looking for: single sto...

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08 Jun

House Extensions

London - SW20

Enquiry from: Priya P

Start Date: Immediate

We want to take off the wall in between the kitchen and dinning area and extend it further into garden by 4 meters

Post a similar request >

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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.

how much does a two storey house extension cost?

If you’re considering adding a two storey house extension, then setting a budget for this project would be a great way to get started. Similar to a rear extension, a two storey extension usually leaves the rest of the building needing some work and, due to its size, this may imply the re-development of the entire house - which is why they can be very costly. Some of the other influencing factors that can have big impact on a two storey house extension cost includes: your location, the size of the build, complexity of the design ( anything beyond the standard build will normally require more expertise and time), the glazing to be incorporated ( the more the glass used in the project, the more the material cost), as well as the team used.

Generally, when it comes to extensions, the major part of the expenses will be made on the build of the project. This is because it doesn’t only cover the material cost but also the contractor’s overhead as well as the daily rates. At this stage, the extension prices can be determined by the standard of the work that’s being done.

For a fairly average room size of about 18 square metre, the two storey extension should cost within the range of £2,500 to £3,000 per square metre - with the range being determined by the finishes incorporated. Therefore, a two storey extension of about 18 square metre should cost within the range of £45,000 to £55,000. However, this is with the assumption that there are standard window sizes, bathroom suits are modest, and without any need for any purpose joinery or glazing. If you wish to include all these extra features you’ll also have to pay more to make the total cost between £70,000 to £80,000.

Do I need my neighbours’ permission for an extension?

Well the reality is, sometimes, neighbours just don’t get along. With several individuals living in close proximity, it’s little surprise they tend to get on one another’s nerves from time to time. However, there’s a difference between having a tiff and being able to transform your house the way you want without having to obtain your neighbour’s approval.

The short and simple answer to this question is, not necessarily. However, you must first educate yourself by thinking about your extension and how it affects the houses around you. We’d strongly recommend you talk proposals through with your neighbour so as to avoid possible conflicts later. There are a number of reasons why your neighbour can protest to your new home extension plans. Let’s take a look!

 

  • In the event whereby your new extension is blocking their view or providing an unwanted shade on their property. Here, they have a legitimate reason to protest as no one would want their once sunny garden suddenly covered or plummet into shade.
  • In the event where it leads to a loss of privacy. For instance, if your new extension possesses a window which overlooks the neighbour’s property in any way. This is likely to be taken as an invasion of privacy and that has a little to no chance of being a welcomed idea.
  • If it’s a major project and going to take a lot of weeks before completion. The noise generated, especially when your neighbours are enjoying your summer holidays or weekends, can make their gardens not as relaxing as it used to be.
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.

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Customer Reviews

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Westminster House extensions installers are rated 4.4 out of 5 based on 19 reviews of 201 pros.
The LeadsDoWork rating and review is an overall rating based on verified reviews and feedback from the customers with House extensions projects that have been connected with House extensions pros to help them. All House extensions contractors All Westminster House extensions contractors
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