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House Extension in city

House extension features a wide range of benefits that makes it easy to see why the extension could be a wonderful uptick in the potential rate of your property in regards to sales. So if you're aiming to construct a new home extension however still not convinced about the project, we're below to assist you. Being totally conscious any kind of house construction work is usually a hefty financial investment, there's a massive requirement to be set on your decision prior to scheduling the beginning of any work. So are house extensions worth it? Below are several of the leading advantages supplied by house extensions to assist you make a decision if it's one of the most suitable route for you.

 

What's Associated with Adding an Extension?

The steps will vary depending on the extent of your extension, however you can anticipate some, otherwise all, of the below to be involved when including an expansion to your residence:

 

  1. Getting Building Regulations or Planning Permission (if required as the extension is larger than permitted development).
  2. Checking your leasehold agreement (if applicable) to see to it you can do what you want to do.
  3. Employing an architect  to create the plans, considering your intended use ( kitchen area, restroom, study).
  4. Hiring a competent builder with experience of larger projects.
  5. Contacting your insurance policy company to allow them know of the intended work ahead of it beginning.
  6. Obtaining parking allows if required for your specialists to ensure they have easy accessibility to your property.
  7. Making certain all intended work falls within allowed allowables.
  8. Clearing the space and excavating if needed, including the removal of trees.
  9. Building work can start.

 

What is the price of a house extension in city?

If you're thinking about including a two floor house extension, then establishing a budget for this job would certainly be a fantastic means to begin. Comparable to a rear extension, a 2 floor extension usually leaves the remainder of the structure requiring some job and also, due to its dimension, this might indicate the re-development of the whole house - which is why they can be very expensive. Several of the other influencing aspects that can have large effect on a two floor house extension cost consists of: your place, the dimension of the build, complexity of the design (anything past the common build will typically need more experience and also time), the glazing to be incorporated (the extra the glass used in the job, the more the product cost), along with the team used.

Average House extensions cost in Sunbury-on-thames

The regular cost of House extensions are £51,667 in Sunbury-on-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 Sunbury-on-thames, as reported by local LeadsDoWork members.

House extensions installation cost in Sunbury-on-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 Sunbury-on-thames in May 2026

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Requests for House extensions quotations in Sunbury-on-thames in May 2026. 25% change from April 2026.

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

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Sunbury-on-thames

Sunbury-on-Thames often called Sunbury is regarded as a town inside the Surrey borough of Spelthorne (historically in Middlesex), England. It lies just outside of Greater London, alongside the London Boroughs of Hounslow and Richmond upon Thames. Sunbury is centred 14.5 miles (23.3 km) south-west of Charing Cross, London, is bordered by Shepperton, Upper Halliford, Ashford, Feltham and Hampton and it's flanked on the south by the River Thames.

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House extensions pros in Sunbury-on-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 Sunbury-on-thames

19 Oct

House Extensions

Sunbury-on-Thames - TW16

Enquiry from: Sai K

Start Date: Immediate

6m rear kitchen extension with pitched roof with roof lights. customer is currently in the process of looking for quotes to add a single storey extension to their property. are you the property owner...

Post a similar request >

12 Sep

House Extensions

Sunbury-on-Thames - TW16

Enquiry from: Altin S

Start Date: Immediate

The house had an existing 2.6x1.7 m extension. We want this to be across the whole of the property, at 2.6x4.5 m. Looking for a serious quote, to factor into buying the property's price.

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03 Dec

House Extensions

Sunbury-on-Thames - TW16

Enquiry from: Mentor R

Start Date: 1 to 3 months

A new 2 story exention,shell only. New front porch, New front of house brick wall,about 600mm hight and about 4m long. New brick wall to connect the new extension with the front of house foot pat...

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03 Mar

House Extensions

Sunbury-on-Thames - TW16

Enquiry from: Jwalant P

Start Date: Immediate

Kitchen extension Home Owner Call to Appoint

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25 Aug

House Extensions

Sunbury-on-Thames - TW16

Enquiry from: Manpreet G

Start Date: Immediate

single storey extension Are you the property owner: Relative of Owner Property Type: Semi detached Looking For: Single storey extension Do you have planning permission: Yes Do you have plans drawn up:...

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22 May

House Extensions

Sunbury-on-Thames - TW16

Enquiry from: SAMIR M

Start Date: Immediate

SINGLE STORY EXTENSION WITH BATHROOM

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24 Jun

House Extensions

Sunbury-on-Thames - TW16

Enquiry from: Liam O

Start Date: Immediate

Customer visited site and submitted an enquiry via contacts form. Enquiry: would like to get a quote for a double side extension and single at the back

Post a similar request >

11 May

House Extensions

Sunbury-on-Thames - TW16

Enquiry from: Naziya H

Start Date: Immediate

Double storey side and rear extension Are you the property owner: Owner of the property Looking For: Double storey extension Do you have planning permission: No Would you require assistance to gain th...

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10 May

House Extensions

Sunbury-on-Thames - TW16

Enquiry from: Christine B

Start Date: 3+ months

Double side extension and single storey rear extension on end of terrace property.

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20 Apr

House Extensions

Sunbury-on-Thames - TW16

Enquiry from: Xavier v

Start Date: Immediate

Home owner Demolition of wall between existing ground floor kitchen and dining room to create new kitchen/diner. Addition of 3.2 sq m new ground floor utility room/extension. Creation of new first ...

Post a similar request >

27 Mar

House Extensions

Sunbury-on-Thames - TW16

Enquiry from: Xavier v

Start Date: Immediate

Demolition of wall between existing ground floor kitchen and dining room to create new kitchen/diner. Addition of 3.2 sq m new ground floor utility room/extension. Creation of new first floor exten...

Post a similar request >

07 Mar

House Extensions

Sunbury-on-Thames - TW16

Enquiry from: Sharkn W

Start Date: Immediate

Home owner Semi detached Single story extension - create more living space Full plans and Planning permission in place Please Contact to Appoint *

Post a similar request >

22 Jan

House Extensions

Sunbury-on-Thames - TW16

Enquiry from: Katie S

Start Date: Immediate

Home owner Terrace Single storey extension to the front of my house with a downstairs toilet. Approximately 12ft by 6ft. Plans in Place Time scale: Immediate Please Contact to Appoint *

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FAQs

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.

What types of extension are there?

There are many different types of extension. For example, you could install an orangery, flat or pitched roof extension, over-structure extension, single or double storey extension or a glass box extension. Which one of these is most suitable will depend on your existing property.

are house extensions worth it?

Often referred to by many as the holy grail of home improvements, house extension comes with a wide range of benefits which makes it easy to see why the extension could be a great uptick in the potential price of your property in terms of sales. So if you’re looking to build a new home extension but still not convinced about the project, we’re here to help you. Being fully aware any home construction work is usually a heavy investment, there’s a huge need to be set on your decision before scheduling the commencement of any work. So are house extensions worth it? Below are some of the top benefits offered by house extensions to help you decide if it’s the most suitable route for you.

• Add To Your Home’s Value

Building an home extension is a great way to add value to your home before selling. Increasing the living space of your home is an incredible appeal to many buyers which significantly increases your property’s total value. However, you must ensure that the extension is impressively designed using top quality materials in order to generate more value.

• Good Alternative To House Moving

The most common reason for moving is usually due to a lack of sufficient space, but with house prices steadily on the increase a cost effective alternative is highly sought after. This alternative is house extension which creates more space for the household to spread out and have more privacy.

• You May Not Require A Planning Permission

You can extend your house and still not need to apply for a planning permission. To achieve this, simply comply with the laid down rules set under the permitted development rights.

• Extra Living Space

If you fill you’re starting to outgrow your existing structure and do not buy into the idea of moving, then your best bet might just be to extend your home.

House extensions

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