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House Extension in city

House extension features a variety of advantages which makes it simple to see why the extension could be a wonderful uptick in the prospective price of your residential property in regards to sales. So if you're wanting to build a new residence extension but still not persuaded regarding the project, we're below to assist you. Being fully conscious any type of home building and construction job is normally a hefty financial investment, there's a massive demand to be set on your decision prior to setting up the commencement of any work. So are house extensions worth it? Below are a few of the top advantages supplied by house extensions to help you choose if it's one of the most suitable route for you.

 

What's Associated with Including an Extension?

The actions will vary relying on the range of your extension, yet you can anticipate some, otherwise all, of the listed below to be included when adding an extension to your residence:

 

  1. Acquiring Building Regulations or Planning Permission (if called for as the extension is larger than permitted development).
  2. Checking your leasehold agreement (if appropriate) to ensure you can do what you intend to do.
  3. Employing an architect  to create the plans, considering your planned usage (kitchen, bathroom, office).
  4. Hiring a competent builder with experience of larger projects.
  5. Calling your insurance policy carrier to allow them recognize of the planned job ahead of it beginning.
  6. Obtaining car park allows if needed for your service providers to guarantee they have simple accessibility to your house.
  7. Making sure all intended job drops within permitted allowables.
  8. Clearing the area as well as excavating if essential, including the removal of trees.
  9. Structure work can begin.

 

What is the expense of a house extension in city?

If you're thinking about adding a 2 storey house extension, after that setting a budget for this task would certainly be a great means to begin. Comparable to a back extension, a two storey extension typically leaves the rest of the building needing some job as well as, as a result of its dimension, this may imply the re-development of the whole house - which is why they can be really pricey. Some of the other influencing aspects that can have huge influence on a two floor house extension cost includes: your location, the size of the build, intricacy of the layout (anything beyond the common develop will usually require even more knowledge as well as time), the glazing to be included (the much more the glass used in the task, the more the material price), along with the team made use of.

Average House extensions cost in Hayes

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

House extensions installation cost in Hayes 2026

Labour cost £27,000
Material cost £10,500
Waste removal £2,500
Time frame: 10-14 weeks
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House extensions on Google in Hayes

Google searches that showed Local Quotes, 15 July to 12 October 2026

1,525

Searches that showed one of our pages for Hayes, all services

Source: Google Search Console, the number of times our pages appeared in Google search results. It counts searches that showed the page, not quote requests.

House extensions searches near Hayes, 15 July to 12 October 2026

172

Searches that showed our page for Greenford

Hayes

Hayes is a town with a population of over 40,000 within the London Borough of Hillingdon. The town was developed within the 19th and 20th centuries and it is a part of the Greater London region. With a number of 1930s and modern houses, there are lots of house upgrades required in the area. Make certain to look at quotes between vetted companies in Hayes for the best price for the next project.

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House extensions pros in Hayes

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 Extension in London

Great consultation by Catalin Spent a lot of time with us understanding the project and various options.

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 Extension in Hemel Hempstead

No quote received

Tectra Partnership Ltd

1 review(s)
Based: in Slough, SL3 0JE

Latest review

Deepak S., KT10
5

House Extension in Esher

excellent communication

JPA Building Construction LTD

1 review(s)
Based: in Twickenham , TW1 1AG

Latest review

Rosa S., SE20
5

House Extension in London

Very nice and helpful unfortunately I am looking for a builder who lives nearby my property

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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.

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.

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 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.

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