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House Extension in city

House extension comes with a vast array of advantages which makes it easy to see why the extension could be a wonderful uptick in the possible price of your residential or commercial property in terms of sales. So if you're aiming to construct a brand-new home extension but still not convinced about the job, we're here to help you. Being completely conscious any kind of residence building job is usually a heavy investment, there's a significant need to be set on your decision prior to scheduling the start of any type of work. So are house extensions worth it? Below are several 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 differ relying on the extent of your extension, but you can expect some, if not all, of the below to be included when adding an extension to your home:

 

  1. Getting Building Regulations or Planning Permission (if required as the extension is larger than permitted development).
  2. Inspecting your leasehold arrangement (if relevant) to make certain you can do what you intend to do.
  3. Hiring an architect  to draw the plans, considering your intended use ( kitchen area, washroom, office).
  4. Hiring a competent builder with experience of larger projects.
  5. Contacting your insurance coverage carrier to let them understand of the prepared job ahead of it beginning.
  6. Obtaining auto parking allows if needed for your specialists to guarantee they have very easy accessibility to your residential property.
  7. Making certain all intended work falls within allowed allowables.
  8. Clearing the area as well as excavating if needed, consisting of the elimination of trees.
  9. Structure work can begin.

 

What is the expense of a house extension in city?

If you're considering including a two storey house extension, then establishing a budget for this job would be a great means to begin. Comparable to a rear extension, a 2 floor extension generally leaves the rest of the building needing 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 extremely expensive. A few of the various other influencing factors that can have large impact on a 2 floor house extension price consists of: your place, the size of the develop, complexity of the layout (anything beyond the basic build will typically call for more know-how and time), the glazing to be incorporated (the more the glass used in the task, the a lot more the product cost), in addition to the team used.

Average House extensions cost in Sevenoaks

The regular cost of House extensions are £52,500 in Sevenoaks. Costs vary based upon the materials and the company picked. The upper price range can be as high as £69,333. The material costs are in most cases around£10,500.

Average price per House extensions job in 2025

Avg. price low

Avg. price low
£39,000

Avg. price

Avg. price
£52,500

Avg. price high

Avg. price high
£69,333

£69900

£52425

£34950

£17475

£0

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

House extensions installation cost in Sevenoaks 2025

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

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Sevenoaks

Sevenoaks is a town as well as civil parish in the English area of Kent. Situated southeast of London, it is offered by a traveler primary line railway and also is 21 miles southeast of London Charing Cross. The community also gives its name to the Sevenoaks area, of which it is the major community, adhered to by Swanley as well as Edenbridge. A settlement in the town can be gone back to the 13th century in a record describing the facility of a market. The building of Knole House in the 15th century additionally aided in the development of the town. Sevenoaks was included into the network of contemporary communications when among the very early turnpikes opened in the 18th century. Having a permanent community of 24,987, a large proportion of homeowners are commuters to London and also major towns nearby. This has actually led to the community being an area with high home prices, with expanding pressure on the city to establish even more homes. However, the Ft Halstead defence setup is a considerable company of residents from Sevenoaks. A contemporary shopping centre can be located in the community's centre. Bligh's Shopping Development, opened in 2002, can be accessed from numerous directions in the town. It includes a variety of shops, consisting of mostly national, but also local, shops. The design of the development is styled on a little earlier periods however with modern elements. Located to the southeast of the community is Knole Park, within which rests Knole House. This is a 1,000 acre deer park with numerous trees, owned and also maintained by the National Trust. For every one of your house upgrades, ensure to use reliable specialists in Sevenoaks to make sure of high quality.

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House extensions pros in Sevenoaks

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.

Options Home Improvements LTD

1 review(s)
Based: in Kent, ME8 0DB

Here at Options Home Improvements we specialize is the bespoke design & installation of PVCu & Aluminium, windows and doors, orangeries & conservatories in Gillingham, Kent & South East area. Options Home Improvements was started due to the seemi...

Latest review

Lisa V., ME1
5

House Extensions in Rochester

I haven't had the extension built yet but am planning to use them

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...

Similar Customer Enquiries for House extensions in Sevenoaks

19 Nov

House Extensions

Sevenoaks - TN15

Enquiry from: Tom W

Start Date: 1 to 3 months

customer has a extensions & conversions project they are looking to have done, specially they want quotes for house extension. they are unsure of options so would like to discuss with a builder.confir...

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14 Jul

House Extensions

Sevenoaks - TN13

Enquiry from: Louise D

Start Date: Immediate

a side kitchen extension of about 1.5 m x 7 m with roof lights to be added to a victorian semi detached house are you the property owner: owner of the property property type: semi detached looking for...

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18 Dec

House Extensions

Sevenoaks - TN15

Enquiry from: Pierre S

Start Date: 1 to 3 months

Single sorry side extension. Semi-pitched roof 2 x velux/skylight Double glazed french doors to garden 1 window facing street Extension will be kitchen/diner Convert existing kitchen into 1/2 ut...

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09 Dec

House Extensions

Sevenoaks - TN15

Enquiry from: Pierre S

Start Date: 1 to 3 months

Single sorry side extension. Semi-pitched roof 2 x velux/skylight Double glazed french doors to garden 1 window facing street Extension will be kitchen/diner Convert existing kitchen into 1/2 ut...

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05 Nov

House Extensions

Sevenoaks - TN15

Enquiry from: Richard T

Start Date: 1 to 3 months

Are you the property owner: Owner of the property Property Type: Detached Looking For: Double storey extension Do you have planning permission: No Do you have plans drawn up: No Do you require Plumbin...

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09 Aug

House Extensions

Sevenoaks - TN15

Enquiry from: Francesca W

Start Date: Immediate

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

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09 Apr

House Extensions

Sevenoaks - TN13

Enquiry from: Nathan P

Start Date: Immediate

Are you the property owner: Owner of the property Property Type: Detached Looking For: Single storey extension Do you have planning permission: Yes Do you have plans drawn up: Yes Do you require Plumb...

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08 Apr

House Extensions

Sevenoaks - TN13

Enquiry from: Maksym S

Start Date: 3+ months

What kind of work are you looking to do? House Extension So, what storey extension are you after? Double Storey Great, do you have plans or planning permission in place? No What kind of work are you ...

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06 Apr

House Extensions

Sevenoaks - TN13

Enquiry from: Nathan P

Start Date: Immediate

Are you the property owner: Owner of the property Property Type: Detached Looking For: Single storey extension Do you have planning permission: Yes Do you have plans drawn up: Yes Do you require Plumb...

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03 Apr

House Extensions

Sevenoaks - TN13

Enquiry from: Maksym S

Start Date: 3+ months

What kind of work are you looking to do? House Extension So, what storey extension are you after? Double Storey Great, do you have plans or planning permission in place? No 2 stories, each approx. 40...

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26 Mar

House Extensions

Sevenoaks - TN13

Enquiry from: Nathan P

Start Date: Immediate

Are you the property owner: Owner of the property Property Type: Detached Looking For: Single storey extension Do you have planning permission: Yes Do you have plans drawn up: Yes Do you require Plumb...

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17 Sep

House Extensions

Sevenoaks - TN14

Enquiry from: Mr G

Start Date: Immediate

Single storey to rear of property with pitched roof. This will extend kitchen area. Customer is currently in the process of looking for quotes to add a Single storey extension to their property. Are ...

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11 Aug

House Extensions

Sevenoaks - TN15

Enquiry from: Stephen M

Start Date: Immediate

Homeowner Please contact to appoint 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 P...

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08 May

House Extensions

Sevenoaks - TN15

Enquiry from: Tom K

Start Date: Immediate

Demolition of single storey outbuilding (as new footings required). Double storey brick extension (23 square metres) + 3 RSJs to make the ground floor open plan.

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10 Feb

House Extensions

Sevenoaks - TN13

Enquiry from: Verena C

Start Date: 1 to 3 months

Are you the property owner: Owner of the property Other Forms: 17, 45, 63 Agreed to recieve quotes for selected products: Yes Please call to appoint

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29 Dec

House Extensions

Sevenoaks - TN14

Enquiry from: Terry S

Start Date: Immediate

rear extension to house measuring 5m x 3m 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 ...

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07 Oct

House Extensions

Sevenoaks - TN15

Enquiry from: Tony S

Start Date: 3+ months

Two storey side extension 4m x 5m

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05 Oct

House Extensions

Sevenoaks - TN15

Enquiry from: Daniel C

Start Date: 3+ months

2 storey extension, 4.5m x 8.5m

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28 Sep

House Extensions

Sevenoaks - TN15

Enquiry from: Andrew C

Start Date: 1 to 3 months

Downstairs extension 21.46sq meters. Pitched roof extending out 3.4 Meters and 6.312 Meters wide. I already have plans if you require these. Are you the property owner: Owner of the property Proper...

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01 Sep

House Extensions

Sevenoaks - TN15

Enquiry from: J B

Start Date: 3+ months

2 Storey side extension

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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.

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.

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.

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Sevenoaks House extensions installers are rated 4.5 out of 5 based on 10 reviews of 98 pros.
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