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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
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Google searches that showed Local Quotes, 17 July to 14 October 2026

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Searches that showed one of our pages for Sunbury-on-thames, 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 Sunbury-on-thames, 17 July to 14 October 2026

863

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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

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.

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 Extension in Hemel Hempstead

No quote received

Tectra Partnership Ltd

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

Latest review

Deepak S., KT10
5

House Extension in Esher

excellent communication

JPA Building Construction LTD

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

Latest review

Rosa S., SE20
5

House Extension in London

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

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FAQs

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.

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.

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.

how to finance a house extension?

Do you want to beautify and increase the value of your home? If yes, a refurb and house extension is definitely a great option to consider. Depending on your home extension project, the value that’ll be added to your home’s resale value varies. However, the cost of completing a house extension project can be huge, so you just might want to consider your financing options. Fortunately, there are various options through which your house extension project can be funded with each having its own pros and cons. Your specific circumstances will determine the one that’s going to work best for you, so let’s take a look at some of the best options to help you fund your project.

• Home Remortgaging

The process whereby a mortgage is transferred from one provider to the other is known as remortgaging. This is usually done to generate funds for a project by entering a more lengthy repayment term commitment when switching. If you want to raise your funds in a quick manner, this process works best.

• Savings

This is a good reason to cultivate a good saving habits. If you’ve been able to save up some mega bucks then you’d probably won’t have to borrow money to finance your house extension.

• Unsecured Loans

If you do not buy into the idea of borrowing more against your property, you may just be able to apply for an unsecured loan especially if you have a good credit record. A secured loan makes use of collaterals like a car or house to serve as a cover for the lender, meanwhile an unsecured loan is based mainly on the credit managing history of the borrower.

• Credit Card

There are some great benefits that comes with financing your small or medium scale extension project with your credit card. Not only does it offer some real lifeline if problems arise during the project, but you can also avoid paying excessive interest on the investment by ensuring your deal has a 0% introductory rate.

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Sunbury-on-thames House extensions pros are rated 4.4 out of 5 on average: 14 rated pros, 42 reviews, of 88 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 Sunbury-on-thames House extensions contractors

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