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House Extension in city

House extension includes a vast array of benefits which makes it easy to see why the extension could be a fantastic uptick in the potential rate of your residential property in regards to sales. So if you're looking to build a brand-new residence extension however still not persuaded concerning the task, we're here to aid you. Being fully aware any type of residence building and construction job is normally a heavy financial investment, there's a huge requirement to be set on your choice prior to setting up the beginning of any work. So are house extensions worth it? Below are a few of the top benefits supplied by house extensions to aid you decide if it's the most appropriate course for you.

 

What's Involved in Including an Extension?

The actions will certainly vary depending upon the scope of your extension, however you can expect some, otherwise all, of the below to be involved when including an extension to your residence:

 

  1. Acquiring Building Regulations or Planning Permission (if needed as the extension is larger than permitted development).
  2. Examining your leasehold arrangement (if appropriate) to make sure you can do what you intend to do.
  3. Enlisting an architect  to draw the plans, considering your planned usage (kitchen, bathroom, office).
  4. Hiring a competent builder with experience of larger projects.
  5. Calling your insurance supplier to allow them recognize of the intended work ahead of it starting.
  6. Obtaining vehicle parking permits if required for your professionals to ensure they have easy access to your residential property.
  7. Making certain all prepared work drops within allowed allowables.
  8. Cleaning the area and also digging deep into if needed, consisting of the removal of trees.
  9. Structure work can start.

 

What is the cost of a house extension in city?

If you're taking into consideration adding a 2 storey house extension, then setting a budget for this job would be a terrific means to get started. Comparable to a rear extension, a two storey extension generally leaves the remainder of the building requiring some work as well as, as a result of its dimension, this might indicate the re-development of the whole house - which is why they can be extremely expensive. Some of the various other influencing factors that can have huge impact on a two storey house extension price consists of: your area, the dimension of the develop, complexity of the layout (anything past the standard build will generally call for even more know-how and time), the glazing to be incorporated (the much more the glass utilized in the project, the a lot more the material cost), along with the group utilized.

Average House extensions cost in Keston

The regular cost of House extensions are £53,000 in Keston. 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 Keston, as reported by local LeadsDoWork members.

House extensions installation cost in Keston 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 Keston in April 2025

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8

Requests for House extensions quotations in Keston in April 2025. 0% change from March 2025.

120

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

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Keston

Keston is both a suburban and rural region, having a population of just about 50,000 and set inside the London Borough of Bromley. It's positioned to the north west of London's boundary with the Kent County. The area carries a spread of modern day plus traditional houses, indicating there are a number of developments required to make certain the continuing upkeep of homes. For the house upgrades in Keston, make sure only to make use of vetted and reputable companies and guarantee a good price along with good quality finish.

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House extensions pros in Keston

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...

LW Building Service

2 review(s)
Based: in London, SE20 8AG

Latest review

Rosa S., SE20
3

House Extensions in London

I have not yet finalised quotation

Similar Customer Enquiries for House extensions in Keston

22 Sep

House Extensions

Bromley, Keston - BR2

Enquiry from: Surlu R

Start Date: Immediate

large garden outbuilding are you the property owner: owner of the property property type: detached looking for: single storey extension do you have planning permission: no do you have plans drawn up: ...

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27 Oct

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Bromley, Keston - BR2

Enquiry from: ROWENA D

Start Date: Immediate

4m x 4m extension

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19 Feb

House Extensions

Bromley, Keston - BR2

Enquiry from: Doug C

Start Date: Immediate

A ground floor extension to the back of the house. I am not sure of exact measurements but would guess 10 metres wide by 5 out.

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03 Jan

House Extensions

Bromley, Keston - BR2

Enquiry from: Chris H

Start Date: Immediate

*Homeowner House extension Please call to appoint

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20 Jun

House Extensions

Bromley, Keston - BR2

Enquiry from: Mrs P

Start Date: 1 to 3 months

Are you the property owner: Owner of the property Property Type: Semi detached How many bedrooms does the property have: 3-4 Bedrooms Other Forms: 45 Agreed to recieve quotes for selected products: Y...

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19 Mar

House Extensions

Bromley, Keston - BR2

Enquiry from: Shafique B

Start Date: Immediate

Submit your free quote for rated tradespeople

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22 Jan

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Bromley, Keston - BR2

Enquiry from: Sumit B

Start Date: Immediate

*Homeowner kitchen / living room extension Supplied and fitted Please call to appoint

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20 Jan

House Extensions

Bromley, Keston - BR2

Enquiry from: Sumit B

Start Date: Immediate

kitchen / living room extension

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12 Oct

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Bromley, Keston - BR2

Enquiry from: David B

Start Date: Immediate

two storey extension to rear of victorian mid terrace house plus loft conversion plus loft conversion and internal reconfiguration to permit stairs to loft

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06 Oct

House Extensions

Bromley, Keston - BR2

Enquiry from: David B

Start Date: Immediate

two storey extension to rear of victorian mid terrace house plus loft conversion plus loft conversion and internal reconfiguration to permit stairs to loft

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01 Oct

House Extensions

Bromley, Keston - BR2

Enquiry from: David B

Start Date: Immediate

two storey extension to rear of victorian mid terrace house plus loft conversion plus loft conversion and internal reconfiguration to permit stairs to loft

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07 Sep

House Extensions

Bromley, Keston - BR2

Enquiry from: Sonia S

Start Date: 1 to 3 months

Customer visited the myhouseextension.co.uk site and submitted an enquiry. Property type: Terrace, Work description: I am planning inbuying a house and extend it. This is what I have in mind tak...

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30 Aug

House Extensions

Bromley, Keston - BR2

Enquiry from: Mohamed E

Start Date: 1 to 3 months

Are you the property owner: Owner Have you considered getting your windows replaced to match a new conservatory: No Other Forms: 45, 1 Agreed to recieve quotes for selected products: Yes Please call ...

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08 Aug

House Extensions

Bromley, Keston - BR2

Enquiry from: Roland R

Start Date: 3+ months

Customer visited the myhouseextension.co.uk site and submitted an enquiry. Property type: Semi detached, Work description: I would like to get a quote. Single storey front porch,back and side ...

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04 Aug

House Extensions

Bromley, Keston - BR2

Enquiry from: Jess S

Start Date: Immediate

Extension above side extension making additional bedroom and family bathroom

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06 Mar

House Extensions

Bromley, Keston - BR2

Enquiry from: Tony S

Start Date: Less than one month

Rear wall of kitchen is the end wall of house, it includes a sink/window running on one half and then an internal door to a 1.5m utility room. I want to move back wall at sink/window in line with util...

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16 Jan

House Extensions

Bromley, Keston - BR2

Enquiry from: V

Start Date: Immediate

2 story side extension to 1930s semi - to include 1st floor bedroom and bathroom, ground floor kitchen extension & playroom

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08 Jan

House Extensions

Bromley, Keston - BR2

Enquiry from: Ian C

Start Date: Less than one month

Foundation setting and Erection of small pre fab home extension size shape tbc. Are you the property owner: Owner of the property Property Type: Semi detached Looking For: Single storey extension Do ...

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14 Dec

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Bromley, Keston - BR2

Enquiry from: Cong N

Start Date: Immediate

home extension, refurbishing

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09 Nov

House Extensions

Bromley, Keston - BR2

Enquiry from: Divya A

Start Date: Immediate

Double storey side extension and rear extension.

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FAQs

how much is a double house extension?

A double house extension is basically a construction to any aspect of your house that elevates up to offer two floors of space. It can be structured to suit your existing home in two storeys or as a side wing on a taller property. If you’re considering building a double house extension, then estimating the cost is a very important task to do before commencing the project. In this article, we’ll give you an idea of the cost of a double house extension so you can estimate yours accordingly.

The double house extension cost depends on several factors that’s specific to your home as well as your design choice. These includes:

• Location of your property. Places like London and the southeast will generally cost more than the other regions due to higher demands.

• Accessibility of the site. The ease of your site’s accessibility also plays a key role in the price.

• Size of the extension. The more the extension’s size in footprint and square metres, the higher the possible costs.

• Materials used in making the roof as well as the complexity of the roof design.

• Your choice of finishing. These includes flooring window and door frames, glazing, underfloor heating and roof lights.

• Your property’s soil type. Different types of soil requires varying treatments as well as materials to develop solid foundations.

Constructing a double house extension is a quite simple build in terms of technicality when its to the side or rear of your house as this can also help you save some money. Generally, considerably expanding your home’s space by building a double house extension will cost within the range of £1,500 per m2 to about £2,800 per m2.

Can I extend the front of my house?

When it comes to extending a home, the rear of the house often comes to mind a lot more than the front. However, this doesn’t mean that you can’t extend the front of your house. This can be done either as part of a renovation project whereby the entire house is incorporated or it can also be done in isolation. It’s possible to extend the front of your house without the need to apply for a planning permission, however, there are a bunch of limitations you’d have to comply with if you wish to carry out with such a project. Sometimes, this may imply that extending to the front of your home is more tedious and tasking than extending your home’s rear. So exactly how far can you extend the front of your home without planning permission?

 

The short and simple answer to this question is 2 metres square area with a height not more than 3 metres. Generally, you do not need a planning permission to build a front porch as long as its area doesn’t go beyond 2 square metres from a public road or walkway. Also, a tiled or slated roof can be as much as 4 metres but other roofs must not go beyond 3 metres in height. If you want to extend the front of your home beyond the restrictions specified, then you’ll have to apply for a planning permission.

 

Extending the front of home can be quite costly, but this can be controlled by not building to the extension to the highest specification, not including an extension on kitchens or bathrooms and more.

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.
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.

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