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House Extension in city

House extension comes with a wide variety of benefits that makes it very easy to see why the extension could be a terrific uptick in the prospective price of your building in terms of sales. So if you're aiming to construct a brand-new residence extension however still not persuaded about the project, we're below to aid you. Being fully mindful any kind of home building and construction job is generally a hefty investment, there's a significant demand to be set on your decision before scheduling the commencement of any type of job. So are house extensions worth it? Below are some of the top advantages supplied by house extensions to aid you determine if it's one of the most suitable course for you.

 

What's Associated with Including an Extension?

The steps will differ depending on the range of your extension, yet you can anticipate some, if not all, of the below to be entailed when including an extension to your residence:

 

  1. Getting Building Regulations or Planning Permission (if called for as the extension is larger than permitted development).
  2. Checking your leasehold arrangement (if relevant) to make sure you can do what you intend to do.
  3. Hiring 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 carrier to allow them understand of the prepared job ahead of it beginning.
  6. Obtaining car park allows if needed for your contractors to guarantee they have easy access to your building.
  7. Seeing to it all prepared job falls within allowed allowables.
  8. Clearing up the area and excavating if required, consisting of the removal of trees.
  9. Structure work can start.

 

What is the price of a house extension in city?

If you're taking into consideration including a 2 floor house extension, then establishing a allocate this task would be a terrific way to get started. Comparable to a back extension, a 2 floor extension usually leaves the remainder of the structure requiring some job as well as, due to its size, this might indicate the re-development of the entire house - which is why they can be extremely expensive. Some of the other affecting factors that can have huge effect on a 2 floor house extension cost includes: your place, the dimension of the build, intricacy of the style (anything past the typical construct will usually require more proficiency as well as time), the glazing to be included (the more the glass made use of in the project, the a lot more the product cost), along with the team made use of.

Average House extensions cost in Wandsworth

The regular cost of House extensions are £62,143 in Wandsworth. Costs vary based upon the materials and the company picked. The upper price range can be as high as £91,143. The material costs are in most cases around£10,500.

Average price per House extensions job in 2026

Avg. price low

Avg. price low
£34,572

Avg. price

Avg. price
£62,143

Avg. price high

Avg. price high
£91,143

£91700

£68775

£45850

£22925

£0

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

House extensions installation cost in Wandsworth 2026

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

House extensions searches in July 2026

House extensions Projects in Wandsworth in June 2026

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Requests for quotations in Wandsworth in June 2026

0

Requests for House extensions quotations in Wandsworth in June 2026. 0% change from May 2026.

1,000

Requests for House extensions quotations in London County in June 2026. 14% change from May 2026.

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

House extensions searches in cities and towns near Wandsworth June 2026

Wandsworth

The London Borough of Wandsworth is a London borough in England, and forms part of Inner London. The borough borders the London Borough of Lambeth towards the east, the London Borough of Merton along with the Royal Borough of Kingston Upon Thames towards the south, the London Borough of Richmond upon Thames towards the west and to the north, across the River Thames, three boroughs, namely the London Borough of Hammersmith and Fulham, Royal Borough of Kensington and Chelsea and the City of Westminster.

The local authority is Wandsworth London Borough Council. As outlined by population estimates created during 2014, the borough has a permanent population of around 312145 inhabitants. You will find several new or refurbished buildings along the borough's prosperous riverside like the large Chelsea Bridge Wharf.

The Peace Pagoda, one of several such international Pagodas is in Battersea Park, a sprawling rectangle frequently hosting circuses beside the Thames. The London Heliport, London's major and busiest heliport is just beyond Battersea Park and south of this is New Covent Garden Market. In Old Battersea two masonry mansions survived The Blitz, Old Battersea House and Downshire House, both of which hold the uncommon Grade II* status.

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House extensions pros in Wandsworth

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...

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 Wandsworth

16 Oct

House Extensions

London - SW6

Enquiry from: Victor I

Start Date: Immediate

Customer made enquiry for House Extension quotes online. Confirmed interest via phone at 20:30 Homeowner lives in London area. Please call to arrange appointment

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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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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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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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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?

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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

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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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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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17 May

House Extensions

London - SW19

Enquiry from: Mira M

Start Date: Immediate

Customer made enquiry for House Extension quotes online. Confirmed via SMS at 07:19 Homeowner lives in London area. Please call to arrange appointment

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21 Apr

House Extensions

London - SW17

Enquiry from: Daniel N

Start Date: 1 to 3 months

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 21/04/2021 14:04.please call to arrange ...

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19 Mar

House Extensions

London - SW16

Enquiry from: Mr R

Start Date: Immediate

i have a three bedroom mid terrace house and i wish to rent or let the upstairs which is one bedroom .frontroom .kitchen.bathroom and i want to make plqnning permission

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17 Mar

House Extensions

London - SW16

Enquiry from: Lincoln 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 telephone, sms and email at 17/03/2021 14:25.please call ...

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13 Mar

House Extensions

London - SW16

Enquiry from: Michael R

Start Date: Immediate

i want to let or rent upstairs which is a one bedroom .kitchen .bathroom front room. and i will be living downstairs there is only one boiler and electricity for the whole house i would like a quote f...

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15 Oct

House Extensions

London - SW19

Enquiry from: Nim T

Start Date: Immediate

are you the home owner of that property? yes are you replacing an existing porch or is this a new build? new build what material do you require, upvc? upvc what colour do you want it to be? unsure i a...

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28 Apr

House Extensions

London - SW6

Enquiry from: Shuhui L

Start Date: Immediate

Glass box extension/conservatory with a dimension of w3.6m x d2m x h3m Are you the property owner: Owner of the property Property Type: Terrace Looking For: Single storey extension Do you have planni...

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25 Feb

House Extensions

London - SW19

Enquiry from: Eduardo R

Start Date: Immediate

Are you the property owner: Owner Have you considered getting your windows replaced to match a new conservatory: Yes How many windows are you looking for: 3 Windows Other Forms: House Extension Agreed...

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FAQs

Will my extension be expensive?

It depends on the size and type of extension. Small porches or flat roof extensions are very reasonably priced. More substantial two storey extensions can be expensive. In general, the price is roughly proportional to the amount of space you add to your home.

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 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.

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.
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