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House Extension in city

House extension features a wide range of advantages which makes it very easy to see why the extension could be a wonderful uptick in the potential price of your home in regards to sales. So if you're seeking to construct a brand-new home extension yet still not encouraged concerning the task, we're right here to help you. Being completely conscious any residence building and construction job is normally a heavy financial investment, there's a massive demand to be set on your choice before scheduling the beginning of any kind of work. So are house extensions worth it? Below are several of the top advantages provided by house extensions to assist you decide if it's the most suitable course for you.

 

What's Involved in Building an Extension?

The steps will certainly differ relying on the extent of your extension, but you can anticipate some, otherwise all, of the below to be included when including an extension to your home:

 

  1. Obtaining Building Regulations or Planning Permission (if required as the extension is larger than permitted development).
  2. Checking your leasehold arrangement (if appropriate) to make sure you can do what you wish to do.
  3. Employing an architect  to draw the plans, considering your intended use (kitchen, washroom, office).
  4. Hiring a competent builder with experience of larger projects.
  5. Calling your insurance policy provider to let them understand of the planned job ahead of it starting.
  6. Obtaining vehicle parking permits if needed for your specialists to ensure they have very easy accessibility to your house.
  7. Ensuring all planned work drops within permitted allowables.
  8. Clearing the area and also digging deep into if necessary, consisting of the elimination of trees.
  9. Structure work can begin.

 

What is the price of a house extension in city?

If you're thinking about including a 2 storey house extension, after that setting a budget for this project would certainly be a excellent means to start. Comparable to a rear extension, a two floor extension normally leaves the rest of the structure requiring some job and, due to its dimension, this might indicate the re-development of the whole house - which is why they can be really costly. Several of the other affecting variables that can have large impact on a 2 floor house extension cost consists of: your area, the dimension of the construct, intricacy of the design (anything beyond the typical build will usually require more expertise as well as time), the glazing to be incorporated (the more the glass made use of in the task, the extra the material price), as well as the group used.

Average House extensions cost in Richmond upon Thames

The regular cost of House extensions are £51,667 in Richmond upon Thames. Costs vary based upon the materials and the company picked. The upper price range can be as high as £73,000. The material costs are in most cases around£10,500.

Average price per House extensions job in 2026

Avg. price low

Avg. price low
£32,000

Avg. price

Avg. price
£51,667

Avg. price high

Avg. price high
£73,000

£73500

£55125

£36750

£18375

£0

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

House extensions installation cost in Richmond upon Thames 2026

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

House extensions searches in June 2026

House extensions Projects in Richmond upon Thames in May 2026

668

Requests for quotations in Richmond upon Thames in May 2026

7

Requests for House extensions quotations in Richmond upon Thames in May 2026. -13% change from April 2026.

180

Requests for House extensions quotations in Surrey in May 2026. -25% change from April 2026.

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

House extensions searches in cities and towns near Richmond upon Thames May 2026

10

Requests for quotations in Teddington in May 2026

10

Requests for quotations in Ashford in May 2026

9

Requests for quotations in Hounslow in May 2026

9

Requests for quotations in Feltham in May 2026

7

Requests for quotations in Hampton in May 2026

The South East of England is one of the country's nine regions and is also the largest when it comes to population size. The region has around 8.6 million occupants, and although it contains a significant land area, its population density is around 452 people per square kilometre. South East England contains a variety of counties such as Kent, Surrey, East and West Sussex, Hampshire, Buckinghamshire and Berkshire. The populace has expanded greatly over the last ten years, specifically because of the significant conurbations of regions such as Brighton, Portsmouth, Reading and Southampton. The South East is infamous for higher home prices so keep this value on your property with upgrades from expert tradespeople.

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House extensions pros in Richmond upon Thames

Jassi Builders Ltd

2 review(s)
Based: in Hayes, UB4 9YD

Hi Jassi Builders LTD here, I am a specialist in planning, designing and building control services. I make sure that I have completed all my work on perfect time and leave customers in complete satisfaction. We do all types of loft conversions, exten...

Latest review

Julian F., HP2
4

House Extensions in Hemel Hempstead

No quote received

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.

Tectra Partnership Ltd

1 review(s)
Based: in Slough, SL3 0JE

Latest review

Deepak S., KT10
5

House Extensions in Esher

excellent communication

JPA Building Construction LTD

1 review(s)
Based: in Twickenham , TW1 1AG

Latest review

Rosa S., SE20
5

House Extensions in London

Very nice and helpful unfortunately I am looking for a builder who lives nearby my property

Similar Customer Enquiries for House extensions in Richmond upon Thames

02 Sep

House Extensions

Richmond - TW9

Enquiry from: Hassan M

Start Date: Immediate

customer in richmond area has requested that we arrange quotes for their house extension project.mr are considering various options and would like to discuss with a builder directly.please call to dis...

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17 Oct

House Extensions

Richmond - TW9

Enquiry from: Imad G

Start Date: Immediate

We are looking to extend the kitchen towards the rear garden with a width of 5m x 3m. Additionally we may want to extend to the side of the property, so an additional 6m x 3m but this depends on the p...

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20 Jan

House Extensions

Richmond - TW9

Enquiry from: Alena I

Start Date: Immediate

Hello there, I would like to have a cost estimate for a 5 x 5m rear house extension build with SIPS. This will include a skylight window and a full wall glass doors to garden. Many thanks Alena I...

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31 May

House Extensions

Richmond - TW9

Enquiry from: Alena I

Start Date: Immediate

Hello, i have a semidetached property in a conservation area and i would like to have a cost estimate for a 3x4m sips extension. thank you Alena Irish

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20 May

House Extensions

Richmond - TW9

Enquiry from: Anna M

Start Date: Immediate

porch , change main door house painting , windows frame filling bricks , sealing gaps. changing door handles . are you the property owner: owner of the property do you have planning permission...

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27 Jan

House Extensions

Richmond - TW10

Enquiry from: Behzad M

Start Date: Immediate

I need a quote for an extension Are you the property owner: Owner of the property Looking For: Single storey extension Do you have planning permission: Yes Do you have plans drawn up: No Do you requir...

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22 Feb

House Extensions

Richmond - TW10

Enquiry from: Greg L

Start Date: Immediate

5x5 extension with utility room, bi-fold doors and kitchen to be fitted Are you the property owner: Owner of the property Looking For: Single storey extension Do you have planning permission: Yes Do y...

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29 Nov

House Extensions

Richmond - TW9

Enquiry from: Milan S

Start Date: Immediate

Rear single story extension

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14 Jul

House Extensions

Richmond - TW9

Enquiry from: Paige M

Start Date: 3+ months

Homeowner Please contact to appoint

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14 Oct

House Extensions

Richmond - TW10

Enquiry from: Steve L

Start Date: 3+ months

quotes for an extension

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16 Sep

House Extensions

Richmond - TW9

Enquiry from: Kalin H

Start Date: 1 to 3 months

Conversion of a house from 2 flats 1 per floor to a single unit, plus extension within 8x3 metres on 1st floor to the garden.

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21 Jun

House Extensions

Richmond - TW9

Enquiry from: Joe H

Start Date: Immediate

Home Owner Single storey extension wanted Planning permission approved. *

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03 May

House Extensions

Richmond - TW9

Enquiry from: Gerry M

Start Date: Immediate

Single storey extension at back of house Are you the property owner: Owner of the property Looking For: Single storey extension Do you have planning permission: No Would you require assistance to gain...

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26 Apr

House Extensions

Richmond - TW9

Enquiry from: Joseph K

Start Date: Immediate

Home Owner Extension to rear of the property Please Call to Appoint *

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17 Apr

House Extensions

Richmond - TW10

Enquiry from: Adele O

Start Date: Immediate

Foundations for 2 storeys plus loft rooms, approx 40 linear meters, for extensions around detached house. Exp 1.2m depth. Will involve bridging over drains. Must be experienced with references, insure...

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14 Mar

House Extensions

Richmond - TW9

Enquiry from: S P

Start Date: Immediate

Home owner Single store Kitchen side return extension - create more living space Assist with Plans and Planning permission Please Contact to Appoint *

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25 Sep

House Extensions

Richmond - TW10

Enquiry from: Vania G

Start Date: 3+ months

Ground floor flat has a conservatory that needs to be knocked down. I would like to build a proper kitchen/diner in its place and if funds allow add a bedroom and en suite shower. Are you the proper...

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08 Sep

House Extensions

Richmond - TW9

Enquiry from: Simon B

Start Date: Immediate

Home owner Looking to extend the ground floor (kitchen) by approx eight feet to combine a victorian workers cottage and add a contemporary glass extension. Single storey extension Plans and Permiss...

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01 Sep

House Extensions

Richmond - TW9

Enquiry from: Simon B

Start Date: Immediate

Home owner Looking to extend the ground floor (kitchen) by approx eight feet to combine a victorian workers cottage and add a contemporary glass extension. Single storey extension Plans and Permiss...

Post a similar request >

10 Aug

House Extensions

Richmond - TW10

Enquiry from: Julie V

Start Date: Immediate

Property type: Terrace Work description: Loft extension (bedroom and bathroom) with raised roof, and extension of the groundfloor into the back garden Time scale: 1 - 3 months Please contact to app...

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FAQs

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.

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.

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.

Should I use concrete or timber footings?

For 2 metre solid fences it’s recommended to use concrete posts to support each panel. For smaller 1 metre fences or for picket fences with gaps between each timber piece you can use timber posts. A fencing contractor will be able to advise you on the best materials from the length and requirements of a new fence.

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