House Extension in city

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House Extension in city

House extension comes with a large range of advantages which makes it very easy to see why the extension could be a fantastic uptick in the potential cost of your building in regards to sales. So if you're looking to build a brand-new residence extension however still not convinced concerning the job, we're right here to assist you. Being totally conscious any home building work is usually a hefty financial investment, there's a massive requirement to be set on your choice prior to setting up the beginning of any type of work. So are house extensions worth it? Below are several of the top benefits used by house extensions to aid you choose if it's the most suitable route for you.

 

What's Associated with Building an Extension?

The actions will vary relying on the range of your extension, but you can anticipate some, if not all, of the below to be entailed when including an extension to your home:

 

  1. Obtaining Building Regulations or Planning Permission (if needed as the extension is larger than permitted development).
  2. Inspecting your leasehold arrangement (if suitable) to make sure you can do what you want to do.
  3. Hiring an architect  to prepare the plans, considering your intended use (kitchen, restroom, office).
  4. Hiring a competent builder with experience of larger projects.
  5. Contacting your insurance policy company to allow them understand of the intended job ahead of it starting.
  6. Obtaining vehicle parking allows if needed for your professionals to ensure they have simple accessibility to your building.
  7. Making sure all prepared work falls within permitted allowables.
  8. Cleaning the area and also excavating if required, including the elimination of trees.
  9. Building work can begin.

 

What is the cost of a house extension in city?

If you're taking into consideration including a two floor house extension, after that setting a budget for this project would be a terrific means to get going. Comparable to a back extension, a two floor extension typically leaves the rest of the building needing some work as well as, due to its size, this might suggest the re-development of the whole house - which is why they can be very pricey. Several of the various other affecting aspects that can have huge influence on a two floor house extension expense consists of: your place, the dimension of the build, intricacy of the design (anything beyond the conventional build will usually call for even more proficiency and also time), the glazing to be integrated (the a lot more the glass used in the project, the much more the material expense), along with the group made use of.

Average House extensions cost in Mitcham

The regular cost of House extensions are £51,667 in Mitcham. Costs vary based upon the materials and the company picked. The upper price range can be as high as £73,000. The material costs are in most cases around£10,500.

Average price per House extensions job in 2026

Avg. price low

Avg. price low
£32,000

Avg. price

Avg. price
£51,667

Avg. price high

Avg. price high
£73,000

£73500

£55125

£36750

£18375

£0

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

House extensions installation cost in Mitcham 2026

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

House extensions searches in September 2026

House extensions Projects in Mitcham in August 2026

3,268

Requests for quotations in Mitcham in August 2026

16

Requests for House extensions quotations in Mitcham in August 2026. -24% change from July 2026.

180

Requests for House extensions quotations in Surrey in August 2026. -25% change from July 2026.

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

House extensions searches in cities and towns near Mitcham August 2026

40

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Requests for quotations in Mitcham in August 2026

13

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Mitcham

Mitcham is the southwest region of London, inside the Borough of Merton and it has a populace of just about 50,000. Nearby areas consist of Wimbledon, Streatham, Tooting and Morden. The region is known due to its great open spaces, including several large ponds. If you're interested in any house improvements within the Mitcham area, ensure to only work with vetted companies in the region to be certain a great price in addition to high quality finish.

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House extensions pros in Mitcham

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.

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...

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 Mitcham

07 Sep

House Extensions

Mitcham - CR4

Enquiry from: Alex B

Start Date: Less than one month

full kitchen extension, with bi-fold doors in to the garden. medium range finish with built in cabinets and an island. are you the property owner: owner of the property property type: terrace looking ...

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12 Aug

House Extensions

Mitcham - CR4

Enquiry from: Alex B

Start Date: Less than one month

full kitchen extension, with bi-fold doors in to the garden. medium range finish with built in cabinets and an island. are you the property owner: owner of the property property type: terrace looking ...

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04 Oct

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Mitcham - CR4

Enquiry from: Thania P

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Single story extension/ pitched roof. WC and kitchen

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11 Aug

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Mitcham - CR4

Enquiry from: Shibu P

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are you the property owner: owner of the property property type: semi detached other forms: house extension agreed to receive quotes for selected products: yes please call to appoint

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11 Mar

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Mitcham - CR4

Enquiry from: Sutharsan T

Start Date: Immediate

Are you the property owner: Owner of the property Property Type: Semi detached Other Forms: House Extension Agreed to receive quotes for selected products: Yes Please call to appoint

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08 Nov

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25 Oct

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Mitcham - CR4

Enquiry from: Jonathan X

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22 May

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Enquiry from: India B

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27 Apr

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10 Apr

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04 Feb

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Enquiry from: Sujit P

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4m extention Are you the property owner: Owner of the property Property Type: Terrace Looking For: Single storey extension Do you have planning permission: Yes Do you have plans drawn up: Yes Do you r...

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16 Oct

House Extensions

Mitcham - CR4

Enquiry from: Alan D

Start Date: Immediate

Are you the property owner: Relative of Owner Looking For: Single storey extension Property Type: Terrace Do you have planning permission: No Do you have plans drawn up: Yes Do you require Plumbing Wo...

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12 Oct

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Mitcham - CR4

Enquiry from: Alan D

Start Date: Immediate

Are you the property owner: Relative of Owner Looking For: Single storey extension Property Type: Terrace Do you have planning permission: No Do you have plans drawn up: Yes Do you require Plumbing Wo...

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29 Jul

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Mitcham - CR4

Enquiry from: Kathleen W

Start Date: Immediate

Customer visited the myhouseextension.co.uk site and submitted an enquiry. Property type: Semi detached, Work description: 4x3 rear extension

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10 May

House Extensions

Mitcham - CR4

Enquiry from: Mr B

Start Date: Immediate

I'd like to convert my garage to utility room, shower room and playroom. The garage is part of existing 2 storey side extension

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15 Mar

House Extensions

Mitcham - CR4

Enquiry from: ABAYOMI J

Start Date: Immediate

Size of extension: 2 rooms Height of extension: 1 floor Room(s) to be in the extension: bathroom, bedroom(s) The extension will be 3 M FROM EXISTING BUILDING , 4.5M FROM A PARTY WALL. One b...

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14 Mar

House Extensions

Mitcham - CR4

Enquiry from: Shahida E

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Customer visited the myhouseextension.co.uk site and submitted an enquiry. Property type: Semi detached, Work description: Rear extension.dimension. width 5m and lenght2.35m

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Enquiry from: A

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28 Nov

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Mitcham - CR4

Enquiry from: Muhammad C

Start Date: Immediate

Rear double story extension, Grany annex, Full House renovation Are you the property owner: Owner of the property Property Type: Semi detached Looking For: Double storey extension Do you have plannin...

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08 Nov

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Mitcham - CR4

Enquiry from: Rijo G

Start Date: Immediate

build costs for an extension

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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.

Should I use concrete or timber footings?

For 2 metre solid fences it’s recommended to use concrete posts to support each panel. For smaller 1 metre fences or for picket fences with gaps between each timber piece you can use timber posts. A fencing contractor will be able to advise you on the best materials from the length and requirements of a new fence.

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.

What types of extension are there?

There are many different types of extension. For example, you could install an orangery, flat or pitched roof extension, over-structure extension, single or double storey extension or a glass box extension. Which one of these is most suitable will depend on your existing property.

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Mitcham House extensions installers are rated 4.3 out of 5 based on 12 reviews of 91 pros.
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