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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

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.

Can an extension add value to my home?

Yes. Most extensions will add substantial value to your home, and you may find that the extension adds more value than it cost. However, it’s important to be sure that the home remains balanced. Extending your garage and leaving your property with no parking spaces, for example, may impact your ability to sell.

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.

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Sevenoaks House extensions installers are rated 4.5 out of 5 based on 10 reviews of 101 pros.
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 Sevenoaks House extensions contractors
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