House Extension in city

Find House Extension Prices in city

Home > Extensions & Conversions Projects > House extensions > Westerham

House Extension in city

House extension comes with a wide variety of benefits which makes it very easy to see why the extension could be a great uptick in the potential rate of your home in terms of sales. So if you're seeking to construct a brand-new home extension however still not persuaded regarding the project, we're below to help you. Being completely aware any kind of house building and construction work is generally a hefty financial investment, there's a huge demand to be set on your decision before setting up the commencement of any work. So are house extensions worth it? Below are some of the leading advantages used by house extensions to help you make a decision if it's the most suitable course for you.

 

What's Involved in Including an Extension?

The steps will certainly vary depending upon the range of your extension, however you can expect some, otherwise all, of the below to be included when adding an extension to your house:

 

  1. Getting Building Regulations or Planning Permission (if called for as the extension is larger than permitted development).
  2. Checking your leasehold arrangement (if appropriate) to make sure you can do what you want to do.
  3. Hiring an architect  to draw up the plans, considering your intended usage (kitchen, restroom, study).
  4. Hiring a competent builder with experience of larger projects.
  5. Contacting your insurance policy provider to allow them understand of the planned job ahead of it starting.
  6. Obtaining vehicle parking permits if needed for your service providers to ensure they have easy access to your residential property.
  7. Making sure all planned work falls within allowed allowables.
  8. Clearing up the area and digging deep into if needed, including the removal of trees.
  9. Building job can start.

 

What is the expense of a house extension in city?

If you're considering including a two storey house extension, then establishing a allocate this job would certainly be a excellent method to begin. Comparable to a rear extension, a 2 storey extension typically leaves the rest of the building requiring some work and, because of its size, this might imply the re-development of the whole house - which is why they can be really costly. Several of the various other influencing aspects that can have big impact on a two floor house extension cost consists of: your location, the dimension of the construct, intricacy of the layout (anything past the conventional construct will generally call for even more know-how as well as time), the glazing to be integrated (the extra the glass utilized in the job, the extra the material cost), in addition to the team made use of.

Average House extensions cost in Westerham

The regular cost of House extensions are £50,625 in Westerham. Costs vary based upon the materials and the company picked. The upper price range can be as high as £67,000. The material costs are in most cases around£10,500.

Average price per House extensions job in 2026

Avg. price low

Avg. price low
£36,750

Avg. price

Avg. price
£50,625

Avg. price high

Avg. price high
£67,000

£67500

£50625

£33750

£16875

£0

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

House extensions installation cost in Westerham 2026

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

House extensions on Google in Westerham

Google searches that showed Local Quotes, 18 July to 15 October 2026

1,916

Searches that showed one of our pages for Westerham, all services

Source: Google Search Console, the number of times our pages appeared in Google search results. It counts searches that showed the page, not quote requests.

House extensions searches near Westerham, 18 July to 15 October 2026

51

Searches that showed our page for Bexhill-on-sea

24

Searches that showed our page for Romney Marsh

4

Searches that showed our page for Tunbridge Wells

3

Searches that showed our page for Hastings

Westerham

Westerham is a community and also civil parish in the Sevenoaks District of Kent, England, situated 5 miles (8 km) west of Sevenoaks. It is recorded as early as the 9th century, and also was discussed in the Domesday Book in a Norman type, Oistreham (compare Ouistreham in Normandy, Oistreham in 1086). Ham is Old English for a village or homestead, therefore Westerham implies a westerly homestead. The River Darent moves with the community, as well as previously powered three watermills. Westerham was house to the Black Eagle Brewery, which was taken control of by Taylor Walker & Co in the 1950s, becoming part of Ind Coope in 1959 and also closing in 1965. Yeast from the brewery was preserved at the National Collection of Yeast Cultures as well as is now used by the existing day Westerham Brewery which was developed in 2004 by Robert Wicks. The brewery generates a variety of ales, consisting of Westerham British Bulldog. Westerham was residence to Crayford Engineering, an effective auto conversion firm, from 1962 to the 1980s, working from a workshop at Squerryes Mede.

Looking for House extensions in Westerham?

Get free quotes from local builders

Get free quotes

House extensions pros in Westerham

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 Extension 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 Extension 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 Extension 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 and around Westerham

27 Mar

House extensions

London - SE19

Enquiry from: Natasha D

Start Date: Immediate

House extensions enquiry

Post a similar request >

02 Jan

House extensions

Dartford - DA2

Enquiry from: Alan B

Start Date: Immediate

Add a first floor and roof to a chalet bungalow and a single story rear extension

Post a similar request >

07 Oct

House extensions

Croydon - CR0

Enquiry from: Anjana G

Start Date: Immediate

Property: semi detached · When: immediate

Post a similar request >

02 Oct

House extensions

Dartford - DA2

Enquiry from: Peter B

Start Date: Immediate

House extensions enquiry

Post a similar request >

29 Sep

House extensions

London - SE26

Enquiry from: Jennifer K

Start Date: Immediate

House extensions enquiry

Post a similar request >

29 Sep

House extensions

London - SE13

Enquiry from: Helen M

Start Date: Immediate

House extensions enquiry

Post a similar request >

15 Apr

House extensions

London - SW19

Enquiry from: Intisar C

Start Date: Immediate

House extensions enquiry

Post a similar request >

09 Apr

House extensions

London - SW16

Enquiry from: Andrea C

Start Date: Immediate

House extensions enquiry

Post a similar request >

20 Mar

House extensions

Erith - DA8

Enquiry from: John N

Start Date: Immediate

House extensions enquiry

Post a similar request >

06 Mar

House extensions

Morden - SM4

Enquiry from: Paul R

Start Date: Immediate

House extensions enquiry

Post a similar request >

02 Mar

House extensions

London - SE9

Enquiry from: Amir A

Start Date: Immediate

House extensions enquiry

Post a similar request >

22 Feb

House extensions

London - SE25

Enquiry from: Zack K

Start Date: 1 to 3 months

Sip construction for wraparound kitchen extension project with planning permission granted and structural & building regulations drawings available/in place

Property: terrace · When: 1-3 months

Post a similar request >

20 Jan

House extensions

South Croydon - CR2

Enquiry from: Richard H

Start Date: Immediate

House extensions enquiry

Post a similar request >

20 Jan

House extensions

Welling - DA16

Enquiry from: Marlon M

Start Date: 1 to 3 months

Property: terrace · When: 1-3 months

Post a similar request >

28 Oct

House extensions

Tonbridge - TN10

Enquiry from: John C

Start Date: Less than one month

Mr lives in the tonbridge area and would like a call to discuss options

Roof: pitched · Property: semi detached · Built: 1930-1970 · Height: 1st floor

Post a similar request >

21 Oct

House extensions

Tunbridge Wells - TN4

Enquiry from: Steve M

Start Date: Less than one month

Looking for a ground floor 9mx3m extention and loft conversion

Property: detached · When: less than one

Post a similar request >

16 Oct

House extensions

London - SE25

Enquiry from: Zack K

Start Date: Immediate

Ground floor wraparound extension

Post a similar request >

Advertisement

Local & reliable builders near me

Tell us about your house extensions project

Answer a few quick questions, so we can match you with local builders who can help.

Find up to 4 builders in Westerham

Get free, no-obligation local house extensions quotes from 4 verified builders working in Westerham.

Hire with confidence

Compare customer reviews, services and prices, and choose the right tradesperson for you.

Our reviews

Average

We haven't decided yet

We haven't decided yet

Helped find a good company without ...

Helped find a good company without all the ringing around

Simple process which gets you resul ...

Simple process which gets you results! Well done.

FAQs

how much does a two storey house extension cost?

If you’re considering adding a two storey house extension, then setting a budget for this project would be a great way to get started. Similar to a rear extension, a two storey extension usually leaves the rest of the building needing some work and, due to its size, this may imply the re-development of the entire house - which is why they can be very costly. Some of the other influencing factors that can have big impact on a two storey house extension cost includes: your location, the size of the build, complexity of the design ( anything beyond the standard build will normally require more expertise and time), the glazing to be incorporated ( the more the glass used in the project, the more the material cost), as well as the team used.

Generally, when it comes to extensions, the major part of the expenses will be made on the build of the project. This is because it doesn’t only cover the material cost but also the contractor’s overhead as well as the daily rates. At this stage, the extension prices can be determined by the standard of the work that’s being done.

For a fairly average room size of about 18 square metre, the two storey extension should cost within the range of £2,500 to £3,000 per square metre - with the range being determined by the finishes incorporated. Therefore, a two storey extension of about 18 square metre should cost within the range of £45,000 to £55,000. However, this is with the assumption that there are standard window sizes, bathroom suits are modest, and without any need for any purpose joinery or glazing. If you wish to include all these extra features you’ll also have to pay more to make the total cost between £70,000 to £80,000.

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.

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.

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.

House extensions

Other Top Projects in Westerham

Customer Reviews

Overall rating:


Westerham House extensions pros are rated 4.5 out of 5 on average: 10 rated pros, 59 reviews, of 70 pros covering the area.
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 Westerham House extensions contractors

Are you a builder in Westerham?

We can help you get more house extensions work with our qualified job leads and boost your business.

Join today