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House Extension in city

House extension features a variety of benefits that makes it easy to see why the extension could be a great uptick in the possible price of your residential or commercial property in regards to sales. So if you're looking to develop a brand-new residence extension however still not encouraged concerning the project, we're here to help you. Being fully conscious any home construction work is generally a hefty financial investment, there's a substantial need to be set on your decision prior to scheduling the beginning of any work. So are house extensions worth it? Below are a few of the leading benefits provided by house extensions to assist you determine if it's one of the most appropriate path for you.

 

What's Involved in Adding an Extension?

The actions will differ depending on the range of your extension, yet you can anticipate some, otherwise all, of the listed below to be involved when adding an extension to your residence:

 

  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 ensure you can do what you wish to do.
  3. Hiring an architect  to create the plans, considering your expected use ( kitchen area, washroom, office).
  4. Hiring a competent builder with experience of larger projects.
  5. Contacting your insurance coverage service provider to allow them know of the intended work ahead of it starting.
  6. Getting vehicle parking permits if needed for your service providers to guarantee they have easy accessibility to your building.
  7. Ensuring all planned job falls within permitted allowables.
  8. Clearing up the space as well as digging deep into if necessary, including the removal of trees.
  9. Structure job can start.

 

What is the expense of a house extension in city?

If you're thinking about including a two storey house extension, after that establishing a budget for this job would be a wonderful way to get going. Similar to a rear extension, a two storey extension normally leaves the rest of the structure needing some job as well as, because of its size, this may indicate the re-development of the whole house - which is why they can be extremely expensive. Several of the other influencing variables that can have big influence on a two floor house extension price consists of: your place, the dimension of the construct, intricacy of the layout (anything past the typical build will generally need more experience and time), the glazing to be incorporated (the more the glass utilized in the project, the more the product expense), in addition to the team used.

Average House extensions cost in Tonbridge

The regular cost of House extensions are £52,500 in Tonbridge. 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 Tonbridge, as reported by local LeadsDoWork members.

House extensions installation cost in Tonbridge 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 Tonbridge in March 2025

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10

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

120

Requests for House extensions quotations in Kent in March 2025. 9% change from February 2025.

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

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Tonbridge

Tonbridge is a market town in Kent, based in the South East area of Britain. The town carries a population of 30,340 and it's located on the River Medway, 12 miles south from the county town of Maidstone. The town also belongs to the admin borough of Tonbridge and Malling, which includes a total population of 107,000. For all house upgrades you need in the Tonbridge area, be sure to compare and contrast quotations from vetted specialists and get the best value for money.

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House extensions pros in Tonbridge

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 Tonbridge

28 Oct

House Extensions

Tonbridge - TN10

Enquiry from: John C

Start Date: Less than one month

customer made an enquiry for house extension and confirmed on the local quotes site they would like quotes from a builder.mr lives in the tonbridge area and would like a call to discuss options.see be...

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07 Jun

House Extensions

Tonbridge - TN10

Enquiry from: James S

Start Date: Immediate

Dormer Loft conversion for 1 bedroom and an ensuite to the rear of the property.

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20 Aug

House Extensions

Tonbridge - TN12

Enquiry from: James L

Start Date: Immediate

customer made an enquiry for house extension and confirmed on the quotatis site they would like quotes from a builder.mr lives in the tonbridge area and would like a call to discuss options.see below ...

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05 Mar

House Extensions

Tonbridge - TN10

Enquiry from: John V

Start Date: Immediate

two storey side extension with pitched roof 3m x 6m customer is currently in the process of looking for quotes to add a double storey extension to their property. are you the property owner: relative...

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25 Feb

House Extensions

Tonbridge - TN12

Enquiry from: Elizabeth F

Start Date: Immediate

HOMEOWNER HOUSE EXTENSION PLEASE CALL TO APPOINT

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22 Feb

House Extensions

Tonbridge - TN10

Enquiry from: Patrick M

Start Date: Immediate

Property Type: Semi detached Looking For: Single storey extension Do you have planning permission: Yes Do you have plans drawn up: No Do you require Plumbing Work: No Do you require Electrical Work: N...

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06 Feb

House Extensions

Tonbridge - TN12

Enquiry from: Gary L

Start Date: 1 to 3 months

Double stoert extension 28m2 floor area

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17 Jan

House Extensions

Tonbridge - TN10

Enquiry from: Vanessa K

Start Date: 1 to 3 months

Homeowner Please contact to appoint

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03 Jan

House Extensions

Tonbridge - TN10

Enquiry from: Vanessa K

Start Date: 1 to 3 months

Homeowner Please contact to appoint

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05 Dec

House Extensions

Tonbridge - TN10

Enquiry from: Carl C

Start Date: Immediate

3mx7m single storey extension as well as converting the garage

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03 Sep

House Extensions

Tonbridge - TN11

Enquiry from: Lee P

Start Date: Immediate

Customer visited the myhouseextension.co.uk site and submitted an enquiry. Property type: Semi detached, Work description: require footings and brickwork price for a 6.9 x 4.9 m single storey extens...

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25 Feb

House Extensions

Tonbridge - TN12

Enquiry from: Natasha W

Start Date: Immediate

We would like plans and drawings for house extension to extend at the back of the property above the garage to the side of the property. Customer is currently in the process of looking for quotes t...

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06 Dec

House Extensions

Tonbridge - TN9

Enquiry from: M

Start Date: Immediate

Single story extension off the end of the kitchen to accomodate toilet and hand basin. approx size is 1.3m x 1.2m

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20 Mar

House Extensions

Tonbridge - TN10

Enquiry from: Sean H

Start Date: Immediate

Extension with a double door opening Are you the property owner: Owner of the property Property Type: Terrace Looking For: Single storey extension Do you have planning permission: No Would you require...

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29 Feb

House Extensions

Tonbridge - TN11

Enquiry from: IAN M

Start Date: Immediate

I want two pillars built in my front garden to hold elctronic gates. Pillars will be 2m high and probably need a steel inside as the gates are 2m wide each side. Finish is white rendering. Please qu...

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03 Jan

House Extensions

Tonbridge - TN10

Enquiry from: S

Start Date: Immediate

would like quote for single back extension on bungalow. Will need to include digging out part of garden.

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29 Dec

House Extensions

Tonbridge - TN10

Enquiry from: Shiralee B

Start Date: Immediate

Rear garden terraced so needs to be cleared and single extension on bungalow of approx 14 by 12 ft. Are you the property owner: Owner of the property Property Type: Semi detached Looking For: Sing...

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19 Dec

House Extensions

Tonbridge - TN10

Enquiry from: Shiralee B

Start Date: Immediate

Rear garden terraced so needs to be cleared and single extension on bungalow of approx 14 by 12 ft. Are you the property owner: Owner of the property Property Type: Semi detached Looking For: Single ...

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11 Sep

House Extensions

Tonbridge - TN11

Enquiry from: Sophia W

Start Date: Immediate

Loft conversion or second storey extension of mid terrace to create an extra bedroom with en suite.

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29 Jan

House Extensions

Tonbridge - TN12

Enquiry from: Richard S

Start Date: 3+ months

3m by 4m single storey extension to rear of house with pitched roof requiring basic electrics. Archway put in where window exists in current building. Window recycled for use in new extension. Home...

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FAQs

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 long do house extensions take?

If you’re about to start your house extension project and wondering how long it’ll take to complete, you’re not alone! This is one of the most common questions that’s asked by homeowners in the UK and across the globe. However, there’s no single precise answer for this as there are multiple factors that’ll affect the length of time it’ll take to complete your home extension. These factors include the size of the construction work as well as whether you’re planning to live in the house after completion or otherwise.

For a single extension, the length of time it’ll take to complete the home extension is normally up to 3 months. So let’s break this down:

As you would have expected, the first step to be taken is the preparation of the site. You start by digging out the footing and preparing the foundation which should take about 2 weeks. This is then followed by the damp course installation as well as the fitting of any drains needed around the extension which will also take a further 2 weeks.

The 5th week will be for the construction of the external walls as well as putting the blockwork in place for the provision of the cavity wall insulation. A further 2 weeks after this, will be dedicated to the installation of the roof structure and the internal walls.

It’s at this junction that you’ll call on your weather proof installer to fit in your uPVC windows and doors. Once done, the gas fitters and electricians will have to be on site to connect power to your new extension building. Subsequently, this will be followed by internal wall plastering as well as breaking through your main house. Once the plaster is dried, decorations completed and all the required furniture and units installed, the extension is ready for use.

Do I need my neighbours’ permission for an extension?

Well the reality is, sometimes, neighbours just don’t get along. With several individuals living in close proximity, it’s little surprise they tend to get on one another’s nerves from time to time. However, there’s a difference between having a tiff and being able to transform your house the way you want without having to obtain your neighbour’s approval.

The short and simple answer to this question is, not necessarily. However, you must first educate yourself by thinking about your extension and how it affects the houses around you. We’d strongly recommend you talk proposals through with your neighbour so as to avoid possible conflicts later. There are a number of reasons why your neighbour can protest to your new home extension plans. Let’s take a look!

 

  • In the event whereby your new extension is blocking their view or providing an unwanted shade on their property. Here, they have a legitimate reason to protest as no one would want their once sunny garden suddenly covered or plummet into shade.
  • In the event where it leads to a loss of privacy. For instance, if your new extension possesses a window which overlooks the neighbour’s property in any way. This is likely to be taken as an invasion of privacy and that has a little to no chance of being a welcomed idea.
  • If it’s a major project and going to take a lot of weeks before completion. The noise generated, especially when your neighbours are enjoying your summer holidays or weekends, can make their gardens not as relaxing as it used to be.
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