House Extension in city

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House Extension in city

House extension features a wide range of advantages that makes it easy to see why the extension could be a excellent uptick in the possible cost of your home in terms of sales. So if you're wanting to construct a brand-new house extension but still not encouraged about the project, we're below to help you. Being totally aware any type of house building and construction work is typically a hefty financial investment, there's a big requirement to be set on your choice before scheduling the start of any kind of work. So are house extensions worth it? Below are several of the top advantages offered by house extensions to help you decide if it's the most appropriate path for you.

 

What's Involved in Building an Extension?

The steps will certainly differ depending on the scope of your extension, however you can expect some, if not all, of the listed below to be entailed when including an extension to your home:

 

  1. Acquiring Building Regulations or Planning Permission (if called for as the extension is larger than permitted development).
  2. Checking your leasehold arrangement (if appropriate) to see to it you can do what you intend to do.
  3. Hiring an architect  to draw the plans, considering your expected usage (kitchen, washroom, study).
  4. Hiring a competent builder with experience of larger projects.
  5. Calling your insurance coverage company to allow them recognize of the planned job ahead of it beginning.
  6. Getting car parking permits if required for your specialists to guarantee they have very easy access to your home.
  7. Seeing to it all prepared job drops within allowed allowables.
  8. Clearing up the space as well as digging deep into if required, including the removal of trees.
  9. Building job can begin.

 

What is the expense of a house extension in city?

If you're thinking about adding a two storey house extension, after that establishing a allocate this job would certainly be a great means to get started. Comparable to a rear extension, a two floor extension generally leaves the rest of the structure needing some work and also, due to its dimension, this might imply the re-development of the whole house - which is why they can be really costly. Some of the other affecting aspects that can have large influence on a 2 floor house extension price consists of: your location, the size of the develop, complexity of the style (anything past the basic construct will generally need more expertise and time), the glazing to be included (the extra the glass made use of in the project, the much more the product expense), along with the team utilized.

Average House extensions cost in Cambridge

The regular cost of House extensions are £44,375 in Cambridge. Costs vary based upon the materials and the company picked. The upper price range can be as high as £62,000. The material costs are in most cases around£10,500.

Average price per House extensions job in 2026

Avg. price low

Avg. price low
£29,250

Avg. price

Avg. price
£44,375

Avg. price high

Avg. price high
£62,000

£62500

£46875

£31250

£15625

£0

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

House extensions installation cost in Cambridge 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 Cambridge in August 2026

12,399

Requests for quotations in Cambridge in August 2026

30

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

120

Requests for House extensions quotations in Cambridgeshire in August 2026. 140% change from July 2026.

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

House extensions searches in cities and towns near Cambridge August 2026

30

Requests for quotations in Cambridge in August 2026

10

Requests for quotations in Haverhill in August 2026

10

Requests for quotations in Saffron Walden in August 2026

10

Requests for quotations in Ely in August 2026

3

Requests for quotations in Newmarket in August 2026

Cambridge

Cambridge isn't a particularly big city but takes centre stage due to its top university, which it's well-known for. The city by itself just has a population of 125,000 although attracts in loads of tourism with the river appeal and various other activities. There's a variety of homes within the city as well with older and modern buildings, so no matter whether it's insulation or renewable technology, always keep your Cambridge property up-to-date.

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House extensions pros in Cambridge

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.

Similar Customer Enquiries for House extensions in Cambridge

12 Mar

House Extensions

Cambridge - CB23

Enquiry from: Jay M

Start Date: Immediate

Customer is looking for House Extension quotes. They are unsure of options so would like to discuss. Confirmed interest via Customer lives in Cambridge area Please call to arrange an appointment

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09 Jan

House Extensions

Cambridge - CB2

Enquiry from: David C

Start Date: Immediate

Addition of 12 x 4m SIP extension to rear of school hall. To incorporate an existing toilet block and have a roof extended from the halls existing pitched slate roof. 2 x Sliding patio doors along...

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13 Nov

House Extensions

Cambridge - CB1

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Customer in Cambridge area made an enquiry for House Extension online. Confirmed via SMS at 17:58 Confirmed via email at 17:58 Confirmed via phone at 17:58 Please call to arrange an appointment to di...

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28 Oct

House Extensions

Cambridge - CB3

Enquiry from: Mehdi N

Start Date: Immediate

Customer is looking for House Extension quotes. They are unsure of options so would like to discuss. Confirmed interest via Customer lives in Cambridge area Please call to arrange an appointment

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08 Aug

House Extensions

Cambridge - CB25

Enquiry from: Gareth W

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2 storey sips rear extension

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18 Oct

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Cambridge - CB22

Enquiry from: Sandra V

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ms requested quotes for house extension from a builder around cambridge. they are considering a couple of projects at the moment.call anytime to arrange appointment to discuss. the information below i...

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07 Dec

House Extensions

Cambridge - CB1

Enquiry from: Alex B

Start Date: Immediate

side extension to semi detached house (2mx8m) customer is currently in the process of looking for quotes to add a single storey extension to their property. are you the property owner: owner of the p...

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30 Jan

House Extensions

Cambridge - CB5

Enquiry from: Dhani V

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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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19 Oct

House Extensions

Cambridge - CB2

Enquiry from: Assma E

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

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06 May

House Extensions

Cambridge - CB23

Enquiry from: Edna J

Start Date: Immediate

customer in cambridge 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 06/05/2021 18:55.please call to arran...

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04 Mar

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Cambridge - CB21

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convert 2 bed detached bungalow into 4 bedroom house

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22 Feb

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Cambridge - CB24

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Double extension to existing detached house

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24 Jan

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Cambridge - CB21

Enquiry from: George S

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09 Nov

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Cambridge - CB25

Enquiry from: Anas M

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property owner house extension please call to appoint

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19 Oct

House Extensions

Cambridge - CB23

Enquiry from: Liji T

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*homeowner extension please call to appoint

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07 Aug

House Extensions

Cambridge - CB1

Enquiry from: Achim B

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rear extension 4.5 x4.5m to kitchen/diner with small annex 1x2m incorporated used as utilities room of a mid -terrance house are you the property owner: owner of the property property type: terrace lo...

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10 Jun

House Extensions

Cambridge - CB2

Enquiry from: Bennet S

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are you the property owner: tenant (with permission) have you considered getting your windows replaced to match a new conservatory: no other forms: house extension agreed to receive quotes for select...

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06 Jun

House Extensions

Cambridge - CB5

Enquiry from: Baran G

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are you the property owner: owner of the property property type: semi detached how many bedrooms does the property have: 5+ bedrooms other forms: kitchen design & installation, house extension, gas b...

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19 May

House Extensions

Cambridge - CB23

Enquiry from: Sian J

Start Date: Immediate

are you the property owner: owner have you considered getting your windows replaced to match a new conservatory: no other forms: house extension agreed to receive quotes for selected products: yes pl...

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26 Sep

House Extensions

Cambridge - CB22

Enquiry from: Mateusz I

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* Homeowner Single house extension

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FAQs

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 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.

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.

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.

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