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House Extension in city

House extension comes with a variety of advantages which makes it very easy to see why the extension could be a terrific uptick in the possible rate of your residential property in terms of sales. So if you're aiming to build a new house extension but still not convinced regarding the job, we're here to aid you. Being totally conscious any kind of home building job is normally a hefty financial investment, there's a massive need to be set on your choice before scheduling the beginning of any kind of work. So are house extensions worth it? Below are a few of the top benefits used by house extensions to assist you make a decision if it's the most appropriate path for you.

 

What's Associated with Adding an Extension?

The steps will differ depending upon the scope of your extension, yet you can anticipate some, otherwise all, of the below to be involved when adding an expansion to your residence:

 

  1. Obtaining Building Regulations or Planning Permission (if called for as the extension is larger than permitted development).
  2. Examining your leasehold arrangement (if appropriate) to ensure you can do what you wish to do.
  3. Enlisting an architect  to prepare the plans, considering your planned usage ( kitchen area, shower room, research study).
  4. Hiring a competent builder with experience of larger projects.
  5. Calling your insurance coverage provider to allow them recognize of the planned work ahead of it beginning.
  6. Acquiring auto parking allows if required for your contractors to guarantee they have very easy accessibility to your residential building.
  7. Making sure all intended work falls within allowed allowables.
  8. Clearing the space and also excavating if necessary, consisting of the elimination of trees.
  9. Building job can begin.

 

What is the price of a house extension in city?

If you're taking into consideration adding a 2 storey house extension, then setting a budget for this job would be a fantastic means to start. Comparable to a rear extension, a two storey extension usually leaves the remainder of the structure requiring some work and, as a result of its dimension, this may suggest the re-development of the whole house - which is why they can be really expensive. Several of the various other influencing factors that can have big effect on a 2 storey house extension cost includes: your location, the dimension of the build, intricacy of the design (anything beyond the standard develop will normally need even more expertise as well as time), the glazing to be integrated (the a lot more the glass made use of in the job, the much more the material cost), in addition to the team utilized.

Average House extensions cost in Tower Hamlets

The regular cost of House extensions are £51,667 in Tower Hamlets. 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 Tower Hamlets, as reported by local LeadsDoWork members.

House extensions installation cost in Tower Hamlets 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 Tower Hamlets in August 2026

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Requests for quotations in Tower Hamlets in August 2026

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Requests for House extensions quotations in Tower Hamlets in August 2026. 0% change from July 2026.

1,000

Requests for House extensions quotations in London County in August 2026. 14% change from July 2026.

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

House extensions searches in cities and towns near Tower Hamlets August 2026

720

Requests for quotations in London in August 2026

Tower Hamlets

The London Borough of Tower Hamlets is a London borough towards the east of the City of London and north of the River Thames. Covering a total area of approximately 7.63 square miles, it's within the eastern part of London and covers much of the conventional East End. The London Borough of Hackney lies towards the north of the borough whilst the River Lea forms the boundary with the London Borough of Newham in the east. On the other side of the Thames is the London Borough of Southwark to the southwest, The London Borough of Lewisham to the South, and also the Royal Borough of Greenwich to the southeast. The River Lea also forms the boundary between these parts of London historically in Middlesex, with those formerly in Essex.

As outlined by population estimates created in the middle of 2014, the borough includes a permanent population of about 284015 individuals. Many of the tallest buildings in London occupy the centre of the Isle of Dogs in the south of the borough.

The borough is also reasonably well-known for being home to the Women's Library in Aldgate, which is Great Britain's major library and museum resource on women and the women's movement, specifically concentrating on Britain within the 19th and 20th centuries. In addition, a part of the Queen Elizabeth Olympic Park is in Tower Hamlets.

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House extensions pros in Tower Hamlets

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...

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 Tower Hamlets

24 Oct

House Extensions

London - E4

Enquiry from: Elaine R

Start Date: Immediate

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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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 Aug

House Extensions

London - E4

Enquiry from: Simon F

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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02 Apr

House Extensions

London - E4

Enquiry from: Marvin B

Start Date: Immediate

homeowner house extension supplied and fitted please call to appoint

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09 Jul

House Extensions

London - E1

Enquiry from: Eva M

Start Date: Immediate

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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31 Oct

House Extensions

London - E4

Enquiry from: Jamie H

Start Date: Immediate

homeowner House extension please call to appoint

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31 Aug

House Extensions

London - E4

Enquiry from: Steven A

Start Date: 1 to 3 months

second floor side and rear extension customer is currently in the process of looking for quotes to add a double storey extension to their property. are you the property owner: owner of the property p...

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19 Aug

House Extensions

London - E16

Enquiry from: Mitesh P

Start Date: 1 to 3 months

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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07 Aug

House Extensions

London - E14

Enquiry from: Simon D

Start Date: Immediate

3.5 x 3m single story extension on back of property. involves moving man hole. are you the property owner: owner of the property property type: terrace looking for: single storey extension do you have...

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06 Aug

House Extensions

London - E1

Enquiry from: Chan R

Start Date: 1 to 3 months

rear extension to be installed 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 requir...

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03 Aug

House Extensions

London - E1

Enquiry from: Chan R

Start Date: 1 to 3 months

rear extension to be installed 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 requir...

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27 Jul

House Extensions

London - E1

Enquiry from: Chan R

Start Date: 1 to 3 months

rear extension to be installed 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 requir...

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14 Mar

House Extensions

London - E14

Enquiry from: Lukey B

Start Date: Immediate

are you the property owner: owner have you considered getting your windows replaced to match a new conservatory: no other forms: kitchen design & installation, house extension agreed to receive quote...

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12 Jul

House Extensions

London - E4

Enquiry from: Luciana A

Start Date: Immediate

we are looking to install and front door porch for reasons of safety as well as energy saving (current front door is original and has a lot of gaps around the frame) we have no idea of budget at this ...

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01 Jul

House Extensions

London - E15

Enquiry from: Manivannan R

Start Date: Immediate

need to do planning permission & rear and side extension with kitchen and bathroom are you the property owner: owner of the property property type: terrace looking for: single storey extension do you...

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05 Jun

House Extensions

London - E4

Enquiry from: Sam H

Start Date: Immediate

Rear house extension under permitted development on a semi detached house. extension will be 5m wide. Due to the current kitchen extending 1m further than the dining room, the extension will be 4m dee...

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18 May

House Extensions

London - E16

Enquiry from: Christian I

Start Date: Immediate

are you the property owner: owner have you considered getting your windows replaced to match a new conservatory: no other forms: kitchen design & installation, house extension, gas boiler replacement...

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16 May

House Extensions

London - E14

Enquiry from: Jitendra S

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: 2 windows other forms: house extension, buil...

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08 May

House Extensions

London - E4

Enquiry from: Bulent E

Start Date: Immediate

to extend our back wall by arou***. however we would only need the length built as the width would have bifold doors installed. on whatprice we was estimated just over 5,500 for the works. are you the...

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17 Feb

House Extensions

London - E16

Enquiry from: Amit S

Start Date: Immediate

2 storey rear& side extension plus loft conversion.

Post a similar request >

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FAQs

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 value does an extension add to your house?

Are you interested in extending your home to create more living space? If yes, then you’d probably want to know how much value it can add to your property in order to compare the building costs to the potential value gain. Well, as long as you know what you’re doing, your house doesn’t necessarily have to be a money pit. So what are your options when talking about home extensions and what’s the associated value to be gained?

• Bathroom Extensions

Although you should have it in mind that bathroom extensions isn’t usually that cheap, but once done, it can increase the value of a standard UK house within the range of £12,000 to £15,000. Meanwhile the finishing cost of a bathroom can range from £2,500 to £7,000.

• Single or Double Storey Extensions

Single storey extensions are always huge when it comes to increasing the value of your home - giving about 4 to 7 percent increase. If it goes that far, then literally nothing beats a full spectrum, double storey extension which can give up to 11 percent increase in the value of a property - equalling about a whooping £33,000 for a standard home in the UK.

• Conservatory Extension

With conservatories becoming more and more popular in the UK due to the weather conditions, several buyers are now including it’s availability as part of the criteria for purchasing a house. Wonder why? This is simply because everyone wants to enjoy their garden all throughout the year. As a result of this high demand, adding this type of extension to your house can go a long way to increase it’s value. However, it’s very important to incorporate high quality materials during construction. With glass conservatories offering, on the average, up to £5,000 increase in value, the cheaper PVC alternative offers much less value and can also deter potential buyers.

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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