House Extension in city

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House Extension in city

House extension includes a variety of benefits that makes it very easy to see why the extension could be a excellent uptick in the prospective price of your building in terms of sales. So if you're looking to develop a new residence extension but still not persuaded about the job, we're here to assist you. Being fully mindful any type of house building and construction job is typically a hefty financial investment, there's a significant requirement to be set on your choice prior to arranging the commencement of any type of work. So are house extensions worth it? Below are a few of the top benefits supplied by house extensions to help you choose if it's the most suitable route for you.

 

What's Involved in Including an Extension?

The steps will vary depending upon the range of your extension, but you can expect some, if not all, of the below to be entailed when including an extension to your residence:

 

  1. Obtaining Building Regulations or Planning Permission (if called for as the extension is larger than permitted development).
  2. Inspecting your leasehold contract (if suitable) to ensure you can do what you want to do.
  3. Getting an architect  to draw the plans, considering your expected usage (kitchen, bathroom, office).
  4. Hiring a competent builder with experience of larger projects.
  5. Calling your insurance coverage service provider to allow them understand of the planned work ahead of it beginning.
  6. Getting car parking permits if required for your specialists to ensure they have very easy access to your house.
  7. Ensuring all intended work falls within allowed allowables.
  8. Cleaning the space as well as digging deep into if essential, consisting of the elimination of trees.
  9. Building job can begin.

 

What is the cost of a house extension in city?

If you're taking into consideration adding a 2 floor house extension, after that setting a allocate this task would certainly be a wonderful method to get going. Comparable to a rear extension, a two storey extension generally leaves the remainder of the structure needing some job and, because of its dimension, this might suggest the re-development of the whole house - which is why they can be very pricey. Some of the other affecting variables that can have large effect on a two floor house extension cost includes: your place, the size of the construct, complexity of the layout (anything beyond the typical build will generally call for even more know-how and time), the glazing to be included (the much more the glass used in the project, the much more the material price), in addition to the team used.

Average House extensions cost in London County

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

House extensions installation cost in London County 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 London County in January 2025

307,195

Requests for quotations in London County in January 2025

1,000

Requests for House extensions quotations in London County in January 2025. 14% change from December 2024.

1,050

Requests for House extensions quotations in Greater London in January 2025. 14% change from December 2024.

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

House extensions searches in cities and towns near London County January 2025

720

Requests for quotations in London in January 2025

27

Requests for quotations in Westminster in January 2025

London County

The capital city of Great Britain has got the biggest metropolitan area in the UK having a populace exceeding eight million. London is situated all around the River Thames and contains several of the world's most famous landmarks including Big Ben, Buckingham Palace and the Houses of Parliament. The capital is easily the most visited city in the world, together with the biggest airport system calculated by passenger traffic. London is split into thirty two boroughs, including Bromley, Hackney, Croydon and the city of Westminster. London boasts a population density ten times greater than every other UK area, with 4,542 residents per square metre. With a mixture of era and modern day housing, make sure you develop your property with vetted trade professionals.

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House extensions pros in London County

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
25th February 2022
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
3rd August 2024
5

House Extensions in London

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

Options Home Improvements LTD

1 review(s)
Based: in Kent, ME8 0DB

Here at Options Home Improvements we specialize is the bespoke design & installation of PVCu & Aluminium, windows and doors, orangeries & conservatories in Gillingham, Kent & South East area. Options Home Improvements was started due to the seemi...

Latest review

Lisa V., ME1
7th August 2016
5

House Extensions in Rochester

I haven't had the extension built yet but am planning to use them

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
30th October 2015
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
4th October 2016
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
10th March 2016
5

House Extensions in Esher

excellent communication

LW Building Service

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

Latest review

Rosa S., SE20
10th October 2015
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
10th October 2015
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 London County

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

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

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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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21 Oct

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London - SE26

Enquiry from: Ga R

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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

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London - SE25

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14 Oct

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Pinner - HA5

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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

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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

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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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22 Sep

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Thornton Heath - CR7

Enquiry from: Rehana R

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rear extension for kitchen and turn present kitchen into shower room are you the property owner: owner of the property property type: terrace looking for: single storey extension do you have planning ...

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23 Aug

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London - E4

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Start Date: 1 to 3 months

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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London - N15

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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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12 Aug

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London - E17

Enquiry from: Richard C

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Dormer loft conversion, two rooms and ensuite shower room

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11 Aug

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Harrow - HA2

Enquiry from: Archit J

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Rear extension squaring off. We have half of the width of the house already extended to the rear. Now want to square it off by extending the remaining ~4 meter width to similar 6 meter depth. So area ...

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10 Aug

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West Drayton - UB7

Enquiry from: Mike T

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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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20 Jul

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Rickmansworth - WD3

Enquiry from: Romana R

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First story extension of a bungalow and a loft room - 74msq, clad in brick slips

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19 Jun

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London - SE6

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customer 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 belo...

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13 Jun

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Hayes - UB3

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customer in the hayes area made an enquiry a couple of projects including house extension.call anytime and arrange an appointment to discuss. below is some details about this project: are you the prop...

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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 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 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.

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.

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