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 £53,000 in Brentford. Costs vary based upon the materials and the company picked. The upper price range can be as high as £75,600. The material costs are in most cases around£10,500.

Average price per House extensions job in 2025

Avg. price low

Avg. price low
£32,400

Avg. price

Avg. price
£53,000

Avg. price high

Avg. price high
£75,600

£76100

£57075

£38050

£19025

£0

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

House extensions installation cost in Brentford 2025

Labour cost £27,000
Material cost £10,500
Waste removal £2,500
Time frame: 10-14 weeks

House extensions searches in May 2025

House extensions Projects in Brentford in April 2025

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Requests for House extensions quotations in Brentford in April 2025. -100% change from March 2025.

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Requests for House extensions quotations in Middlesex in April 2025. 25% change from March 2025.

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

House extensions searches in cities and towns near Brentford April 2025

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Requests for quotations in Ashford in April 2025

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Requests for quotations in Hounslow in April 2025

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Requests for quotations in Feltham in April 2025

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Requests for quotations in Richmond upon Thames in April 2025

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 Extensions in London

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

Tectra Partnership Ltd

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

Latest review

Deepak S., KT10
5

House Extensions in Esher

excellent communication

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 Brentford

06 Apr

House Extensions

Brentford - TW8

Enquiry from: Shelley C

Start Date: Less than one month

Customer visited the myhouseextension.co.uk site and submitted an enquiry. Property type: Semi detached, Work description: Ground floor extension to include a new kitchen Are you the property owner:...

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17 Jun

House Extensions

Brentford - TW8

Enquiry from: Tolo D

Start Date: Immediate

Kitchen extension, lounge extension and refurbishment Are you the property owner: Owner of the property Property Type: Semi detached Looking For: Single storey extension Do you have planning permiss...

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28 Apr

House Extensions

Brentford - TW8

Enquiry from: Barbara M

Start Date: Immediate

Internal measurements are approx 6'6 x 3'6 brick wall + toughened opaque glass + opening window on side. Are you the property owner: Owner of the property Do you have planning permission: No What m...

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15 Jul

House Extensions

Brentford - TW8

Enquiry from: Paul J

Start Date: 3+ months

Build extension room Homeowner Please contact to appoint

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12 Apr

House Extensions

Brentford - TW8

Enquiry from: D

Start Date: Immediate

Single story extention

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28 Feb

House Extensions

Brentford - TW8

Enquiry from: C

Start Date: Immediate

Kitchen extension on a terrace house

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04 Aug

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Brentford - TW8

Enquiry from: K N

Start Date: Immediate

3x4 extension is required. Home Owner Single Storey No Plans Drawn Up Call To Appoint * Please Call From 05/08 After 12pm

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20 May

House Extensions

Brentford - TW8

Enquiry from: Andrew V

Start Date: 1 to 3 months

Home Owner double storey side extension, (as next door neighbour has done) but addition extension at the back of the house to extend the kitchen. assistance with planning application may be required...

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08 Apr

House Extensions

Brentford - TW8

Enquiry from: Andrew V

Start Date: 1 to 3 months

Home Owner double storey side extension, (as next door neighbour has done) but addition extension at the back of the house to extend the kitchen. assistance with planning application may be required...

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06 Apr

House Extensions

Brentford - TW8

Enquiry from: M S

Start Date: Immediate

Home owner I want to convert double large bed room in to two small bedrooms call to appoint

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20 Feb

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Brentford - TW8

Enquiry from: Lena M

Start Date: 3+ months

Homeowner House extension 1 storey extension Supplied and installed Please contact to appoint *

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FAQs

when do you need planning permission for a house extension?

If you’re planning on adding a house extension to your property, you’d probably be worried about whether or not your proposed extension would require a planing permission. Well, it may be relieving to know that not every house extension project would require a formal consent, and in fact, several extensions are covered by the permitted development rights. Not only can this save you a considerable amount of time especially at the project’s planning phase, but it’ll also save you money on the application fee. In the UK, single storey extensions to the house’s rear can be 3 metres deep for both semi detached houses and terraces or 8 metres deep for detached homes.

So how do you know when you’d require a planning permission for your home extension? Well, if your extension plan fits these criteria explained below, then your project is most likely going to be allowable as a permitted development.

• Extensions, which includes previous additions, must not go beyond half of the original house’s total surrounding land area.

• The main elevation, or side elevation where it fronts the highway, must not be extended forward.

• For single storeys, the rear additions must not extend more than the original house’s rear by more than 3 metres in both semi attached homes and terraces (4 metres for detached houses).

• Extensions to the side must be a single storey with a height not exceeding 4 metres and not going beyond 50% of the original house’s width.

• Extensions hat within 2 metres of a boundary should have a eaves height not more than 3 metres.

• Multi storey addition must not extend beyond the original house’s rear wall by a maximum of 3 metres or 7 metres of the boundary opposite the rear wall.

• Permitted development rights do not apply in listed buildings or designated areas.

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.

where to start with a house extension?

Have you decided to improve your property instead of moving? The common problem most homeowners face after deciding to embark on a home extension project is not knowing where to start. In this article we’ll walk you through everything you need to consider and put in place before commencement of your home extension project.

• Is the extension worth it?

Before breaking the bank, you must be sure that the project will add good value to your home. In terms of “value, this is not only limited to the financial gain after disposal of the property, but also several other juicy benefits to be derived from extending your home like an extra living space for the household to spread out and more.

• Do you need a planning permission?

Check with your local authority to determine whether or not you’ll require to submit an application. You can also consult a building expert like an architect for advice.

• What are the building regulation?

Even though planning permission can be dodged, you can not avoid building regulations. These regulations are the set national minimum standards for construction and design which you must comply with to ensure the safety of the individuals in and around it.

• Who will design the extension?

You have to decided whether you’ll hire a professional architect to design the extension or not.

• Who will manage the building work?

If your home extension project is designed and built by a professional company, they’ll be responsible for the management. However, if you decide to use an architect or designed it yourself, you’ll have to hire a main contractor to manage the build.

• How to set the budget?

There are so many factors that can affect the cost of an extension, so it’s better to get the costs from your builder before proceeding.

• Do I need yo inform my home insurance firm?

Absolutely! This is very important as the new extension may affect the rebuilding cost of your property which could have an impact on the policy premium.

• Do I need to inform my neighbours?

It’s very important to discuss your plan with your neighbours before applying for a planning permission and communicate about the concerns they might have.

What types of extension are there?

There are many different types of extension. For example, you could install an orangery, flat or pitched roof extension, over-structure extension, single or double storey extension or a glass box extension. Which one of these is most suitable will depend on your existing property.

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