House Extension in city

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House Extension in city

House extension features a variety of advantages that makes it simple to see why the extension could be a wonderful uptick in the potential price of your property in terms of sales. So if you're seeking to construct a brand-new home extension however still not persuaded about the project, we're below to help you. Being fully mindful any residence building work is generally a hefty financial investment, there's a huge requirement to be set on your choice prior to scheduling the start of any kind of work. So are house extensions worth it? Below are a few of the top advantages supplied by house extensions to assist you choose if it's the most appropriate route for you.

 

What's Involved in Building an Extension?

The actions will certainly vary depending on the scope of your extension, however you can expect some, otherwise all, of the below to be included when adding an expansion to your house:

 

  1. Acquiring Building Regulations or Planning Permission (if required as the extension is larger than permitted development).
  2. Checking your leasehold arrangement (if suitable) to ensure you can do what you wish to do.
  3. Enlisting an architect  to draw up the plans, considering your expected use (kitchen, washroom, office).
  4. Hiring a competent builder with experience of larger projects.
  5. Contacting your insurance policy carrier to allow them know of the planned work ahead of it beginning.
  6. Getting car park allows if needed for your specialists to guarantee they have simple accessibility to your house.
  7. Making sure all planned job drops within allowed allowables.
  8. Clearing the space and digging deep into 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 considering adding a 2 storey house extension, after that setting a budget for this job would certainly be a excellent method to get going. Similar to a back extension, a 2 floor extension typically leaves the rest of the building requiring some work and also, due to its size, this might indicate the re-development of the entire house - which is why they can be extremely pricey. A few of the various other affecting factors that can have huge impact on a 2 floor house extension cost includes: your location, the dimension of the build, complexity of the design (anything past the basic construct will typically require more know-how and also time), the glazing to be incorporated (the extra the glass made use of in the job, the extra the product expense), in addition to the group made use of.

Average House extensions cost in Brentford

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

House extensions installation cost in Brentford 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 Brentford

Google searches that showed Local Quotes, 19 July to 16 October 2026

2,429

Searches that showed one of our pages for Brentford, 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 Brentford, 19 July to 16 October 2026

863

Searches that showed our page for Egham

265

Searches that showed our page for Staines-upon-thames

34

Searches that showed our page for Hounslow

Brentford

The West London town of Brentford forms an area of the Borough of Hounslow and it is found at the confluence of the River Thames by having a populace of close to 50,000. Brentford doesn't have much in the way of modern homes with a lot of houses dated from the 1930s, meaning there's always home upgrades required in the area. For work you want carried out make certain only to use vetted tradesmen in Brentford for the right price and quality work.

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House extensions pros in Brentford

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

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 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.

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 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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Brentford House extensions pros are rated 4.5 out of 5 on average: 13 rated pros, 56 reviews, of 105 pros covering the area.
The LeadsDoWork rating and review is an overall rating based on verified reviews and feedback from the customers with House extensions projects that have been connected with House extensions pros to help them. All House extensions contractors All Brentford House extensions contractors

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