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House Extension in city

House extension includes a wide range of benefits which makes it very easy to see why the extension could be a fantastic uptick in the possible price of your property in terms of sales. So if you're looking to develop a new home extension yet still not encouraged regarding the project, we're below to aid you. Being completely conscious any kind of house construction work is typically a hefty investment, there's a substantial requirement to be set on your decision prior to setting up the commencement of any type of job. So are house extensions worth it? Below are several of the top advantages provided by house extensions to aid you choose if it's one of the most suitable path for you.

 

What's Associated with Including an Extension?

The steps will certainly differ depending upon the range of your extension, yet you can anticipate some, otherwise all, of the listed below to be included when adding an expansion to your house:

 

  1. Acquiring Building Regulations or Planning Permission (if needed as the extension is larger than permitted development).
  2. Examining your leasehold agreement (if applicable) to make certain you can do what you wish to do.
  3. Enlisting an architect  to prepare the plans, considering your intended usage (kitchen, bathroom, study).
  4. Hiring a competent builder with experience of larger projects.
  5. Contacting your insurance policy service provider to let them recognize of the prepared job ahead of it starting.
  6. Getting car parking permits if needed for your professionals to guarantee they have very easy access to your building.
  7. Ensuring all prepared work drops within permitted allowables.
  8. Cleaning the space as well as excavating if needed, including the removal of trees.
  9. Structure work can start.

 

What is the expense of a house extension in city?

If you're taking into consideration including a two storey house extension, after that setting a allocate this task would certainly be a fantastic method to begin. Comparable to a rear extension, a 2 storey extension typically leaves the remainder of the building requiring some work and also, because of its size, this may indicate the re-development of the entire house - which is why they can be really costly. Some of the other affecting aspects that can have big influence on a two storey house extension expense consists of: your area, the size of the construct, intricacy of the design (anything beyond the conventional construct will normally require more experience and time), the glazing to be integrated (the much more the glass made use of in the job, the more the product price), as well as the team used.

Average House extensions cost in Belgravia

The regular cost of House extensions are £65,000 in Belgravia. Costs vary based upon the materials and the company picked. The upper price range can be as high as £96,334. The material costs are in most cases around£10,500.

Average price per House extensions job in 2025

Avg. price low

Avg. price low
£35,334

Avg. price

Avg. price
£65,000

Avg. price high

Avg. price high
£96,334

£96900

£72675

£48450

£24225

£0

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

House extensions installation cost in Belgravia 2025

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

House extensions searches in April 2025

House extensions Projects in Belgravia in March 2025

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Requests for quotations in Belgravia in March 2025

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Requests for House extensions quotations in Belgravia in March 2025. 0% change from February 2025.

1,000

Requests for House extensions quotations in London County in March 2025. 14% change from February 2025.

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

House extensions searches in cities and towns near Belgravia March 2025

Belgravia

Belgravia is a district in West London inside the Royal Borough of Kensington and Chelsea. It includes very pricey residential properties and is considered to be among the wealthiest districts in the world. It lies south west of Buckingham Palace. The area gets its name from one of the Duke of Westminster’s subsidiary titles, Viscount Belgrave.

Belgravia’s Grosvenor Estate is still owned by a family property firm, namely the Duke of Westminster’s Grosvenor Group. However, the estate has been required to sell a lot of its freeholds to its tenants, as a consequence of the Leasehold Reform Act 1967.

The majority of Belgravia was previously owned by Richard Grosvenor, 2nd Marquess of Westminster, who created it in the course of the 1820s and onwards. Thomas Cubitt mostly worked on the project. You'll discover lots of grand terraces at white stucco homes focused around Belgrave Square and Eaton Square. A lot of embassies are situated within this area, particularly in Belgrave Square.

Pimlico Road, on the southern side of Belgravia, is well known for its antique shops and high-end furniture showrooms. 1 established brand along the road is Arthur Brett. Despite these shops, it’s a quiet district of London and neighbouring districts are a lot busier with a lot more shops, offices and hotels.

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House extensions pros in Belgravia

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.

Nicholas James Construction

7 review(s)
Based: in Bromley, BR1 3AX

From past fifteen years we have been established as the finest building and construction service provider to clients in Bromley and its surrounding areas.

Latest review

Jagdish K., HA3
5

House Extensions in Harrow

Absolutely pleasant appointment. Very patient and polite, listened carefully to detail and more of my background and his...

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

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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 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.

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.

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.

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