House Extension in city

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House Extension in city

House extension comes with a wide variety of advantages that makes it easy to see why the extension could be a excellent uptick in the possible price of your residential or commercial property in regards to sales. So if you're wanting to develop a brand-new residence extension but still not persuaded regarding the task, we're below to assist you. Being fully mindful any type of home construction work is typically a heavy investment, there's a big requirement to be set on your decision prior to scheduling the commencement of any job. So are house extensions worth it? Below are a few of the leading benefits offered by house extensions to help you make a decision if it's the most ideal route for you.

 

What's Associated with Building an Extension?

The actions will vary relying on the range of your extension, yet you can anticipate some, if not all, of the listed below to be involved when adding an extension to your house:

 

  1. Obtaining Building Regulations or Planning Permission (if required as the extension is larger than permitted development).
  2. Checking your leasehold agreement (if relevant) to ensure you can do what you intend to do.
  3. Enlisting an architect  to draw up the plans, considering your planned usage (kitchen, washroom, office).
  4. Hiring a competent builder with experience of larger projects.
  5. Calling your insurance policy supplier to let them recognize of the prepared work ahead of it beginning.
  6. Getting parking permits if required for your service providers to guarantee they have very easy access to your residential property.
  7. Making sure all intended job drops within permitted allowables.
  8. Cleaning the area and excavating if needed, including the elimination of trees.
  9. Building job can begin.

 

What is the cost of a house extension in city?

If you're thinking about including a 2 storey house extension, then setting a budget for this job would be a wonderful method to begin. Comparable to a back extension, a 2 storey extension normally leaves the remainder of the structure requiring some work as well as, due to its dimension, this might imply the re-development of the whole house - which is why they can be really expensive. Several of the various other influencing elements that can have big impact on a two storey house extension expense includes: your location, the dimension of the build, complexity of the layout (anything past the basic develop will normally call for even more proficiency and time), the glazing to be incorporated (the a lot more the glass utilized in the task, the much more the material price), as well as the group utilized.

Average House extensions cost in Crawley

The regular cost of House extensions are £52,000 in Crawley. Costs vary based upon the materials and the company picked. The upper price range can be as high as £71,600. The material costs are in most cases around£10,500.

Average price per House extensions job in 2026

Avg. price low

Avg. price low
£34,400

Avg. price

Avg. price
£52,000

Avg. price high

Avg. price high
£71,600

£72100

£54075

£36050

£18025

£0

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

House extensions installation cost in Crawley 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 Crawley in June 2026

3,499

Requests for quotations in Crawley in June 2026

10

Requests for House extensions quotations in Crawley in June 2026. -50% change from May 2026.

70

Requests for House extensions quotations in West Sussex in June 2026. -13% change from May 2026.

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

House extensions searches in cities and towns near Crawley June 2026

10

Requests for quotations in East Grinstead in June 2026

10

Requests for quotations in Crawley in June 2026

10

Requests for quotations in Oxted in June 2026

10

Requests for quotations in Reigate in June 2026

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Requests for quotations in Horsham in June 2026

Crawley

The West Sussex town and borough of Crawley features over 106,000 people. It became a well known passing trade being on the road from Brighton to London and now features London's Gatwick Airport about the edge of the town. Extension has been projected on the western side of the town, with industrial and retail sectors likely to increase. Be sure your home developments are carried out by a reliable business in Crawley and contrast quotations using our system.

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House extensions pros in Crawley

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 Crawley

24 Sep

House Extensions

Crawley - RH10

Enquiry from: James D

Start Date: Immediate

House extention In back or side of garden

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20 Sep

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Crawley - RH10

Enquiry from: Tazeem A

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*homeowner house extension please call to appoint

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12 Jul

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Crawley - RH10

Enquiry from: Saber A

Start Date: 1 to 3 months

hi, i'm interested in extending an existing room over the garage. so it will involve knocking one was down and an extension of roughly 3mx4m. would like to know the cost with an ensuite and without. a...

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01 Jul

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Crawley - RH10

Enquiry from: Gareth J

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

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28 Jun

House Extensions

Crawley - RH11

Enquiry from: Nicola P

Start Date: 1 to 3 months

add a second floor or roof conversion to a bungalow are you the property owner: owner of the property property type: detached looking for: single storey extension do you have planning permission: no d...

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12 Jun

House Extensions

Crawley - RH11

Enquiry from: Thulakshan V

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customer made an online enquiry for house extension and confirmed on telephone, sms and email they would like a call with a builder to discuss prices.please call to arrange an appointment to quote. ar...

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10 Jun

House Extensions

Crawley - RH10

Enquiry from: Andy B

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Infill double garage door. Form storage area to one side. remaining area to be a bedroom with on suite wet room.

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23 May

House Extensions

Crawley - RH11

Enquiry from: Tim B

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single story extension, off the existing kitchen. bi fold doors across the back end, ideally pitched roof with sky lights to give greater height. are you the property owner: owner of the property look...

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23 Jan

House Extensions

Crawley - RH10

Enquiry from: Jerome C

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Single storey rear extension measuring 4.6m x 5.8m wide. Extention to include 2 rooms left and right with French doors on one side and window on the other Are you the property owner: Owner of the prop...

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16 Jan

House Extensions

Crawley - RH10

Enquiry from: Jerome C

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Single storey rear extension measuring 4.6m x 5.8m wide. Extention to include 2 rooms left and right with French doors on one side and window on the other Are you the property owner: Owner of the prop...

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20 Dec

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Crawley - RH11

Enquiry from: Shakil A

Start Date: Immediate

Existing conservatory to be demolished, excavated and new rear extension. Plans approved Customer is currently in the process of looking for quotes to add a Single storey extension to their property....

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06 Oct

House Extensions

Crawley - RH11

Enquiry from: Hina F

Start Date: 1 to 3 months

Are you the property owner: Owner of the property Property Type: Semi detached Looking For: Single storey extension Do you have planning permission: Yes Do you have plans drawn up: No Do you require P...

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04 Oct

House Extensions

Crawley - RH11

Enquiry from: Hina F

Start Date: Less than one month

Property Type: Semi detached Are you the property owner: Owner of the property Looking For: Single storey extension Do you have planning permission: No Do you have plans drawn up: No Do you require Pl...

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11 Apr

House Extensions

Crawley - RH10

Enquiry from: Ed L

Start Date: Immediate

Property Type: Semi Detached Have you got a rough idea of the design you would like: Yes How many bedrooms are you looking to have: 1-2 Bedrooms How many storeys are you looking for the property to h...

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07 Apr

House Extensions

Crawley - RH10

Enquiry from: Paul Y

Start Date: Immediate

Property Type: Detached House Have you got a rough idea of the design you would like: Some Ideas How many bedrooms are you looking to have: 3-4 Bedrooms How many storeys are you looking for the prope...

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08 Mar

House Extensions

Crawley - RH10

Enquiry from: Elaine H

Start Date: 1 to 3 months

Are you the property owner: Owner of the property Is this for a Residential or Commerial Building: Domestic Other Forms: 45 Agreed to recieve quotes for selected products: Yes Please call to appoint

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01 Jan

House Extensions

Crawley - RH10

Enquiry from: Manishaa O

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Customer visited the myhouseextension.co.uk site and submitted an enquiry. Property type: Detached, Work description: Extension over garage Loft conversion Conservatory replacement with extension...

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27 Dec

House Extensions

Crawley - RH10

Enquiry from: Nadia E

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rear and conservatory kitchen extention

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09 Dec

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Crawley - RH10

Enquiry from: Anand S

Start Date: 1 to 3 months

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 Property Type: Detached Looking For: Do...

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20 Nov

House Extensions

Crawley - RH10

Enquiry from: NADEESHA P

Start Date: 3+ months

Homeowner Please contact to appoint

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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.

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.

are house extensions worth it?

Often referred to by many as the holy grail of home improvements, house extension comes with a wide range of benefits which makes it easy to see why the extension could be a great uptick in the potential price of your property in terms of sales. So if you’re looking to build a new home extension but still not convinced about the project, we’re here to help you. Being fully aware any home construction work is usually a heavy investment, there’s a huge need to be set on your decision before scheduling the commencement of any work. So are house extensions worth it? Below are some of the top benefits offered by house extensions to help you decide if it’s the most suitable route for you.

• Add To Your Home’s Value

Building an home extension is a great way to add value to your home before selling. Increasing the living space of your home is an incredible appeal to many buyers which significantly increases your property’s total value. However, you must ensure that the extension is impressively designed using top quality materials in order to generate more value.

• Good Alternative To House Moving

The most common reason for moving is usually due to a lack of sufficient space, but with house prices steadily on the increase a cost effective alternative is highly sought after. This alternative is house extension which creates more space for the household to spread out and have more privacy.

• You May Not Require A Planning Permission

You can extend your house and still not need to apply for a planning permission. To achieve this, simply comply with the laid down rules set under the permitted development rights.

• Extra Living Space

If you fill you’re starting to outgrow your existing structure and do not buy into the idea of moving, then your best bet might just be to extend your home.

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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