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House Extension in city

House extension comes with a large range of advantages which makes it very easy to see why the extension could be a great uptick in the prospective cost of your residential or commercial property in terms of sales. So if you're looking to build a brand-new house extension but still not convinced concerning the project, we're here to help you. Being fully conscious any kind of residence building work is normally a heavy financial investment, there's a huge need to be set on your decision prior to setting up the commencement of any work. So are house extensions worth it? Below are a few of the leading benefits used by house extensions to aid you determine if it's the most suitable course for you.

 

What's Associated with Building an Extension?

The steps will differ depending on the scope of your extension, but you can expect some, otherwise all, of the below to be entailed when including an expansion to your residence:

 

  1. Obtaining Building Regulations or Planning Permission (if required as the extension is larger than permitted development).
  2. Inspecting your leasehold contract (if relevant) to see to it you can do what you want to do.
  3. Hiring an architect  to draw the plans, considering your expected use (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 work ahead of it starting.
  6. Obtaining auto parking permits if required for your specialists to guarantee they have simple access to your property.
  7. Making sure all prepared work falls within allowed allowables.
  8. Cleaning the area as well as digging deep into if essential, consisting of the elimination of trees.
  9. Structure job can start.

 

What is the cost of a house extension in city?

If you're considering including a 2 floor house extension, after that establishing a allocate this task would certainly be a wonderful means to begin. Similar to a back extension, a two storey extension usually leaves the rest of the structure needing some job as well as, as a result of its size, this may imply the re-development of the entire house - which is why they can be extremely expensive. Some of the other influencing aspects that can have big influence on a 2 storey house extension cost consists of: your location, the dimension of the build, intricacy of the style (anything beyond the common develop will normally require more know-how and time), the glazing to be incorporated (the extra the glass used in the task, the much more the material price), as well as the team used.

Average House extensions cost in Horley

The regular cost of House extensions are £52,000 in Horley. Costs vary based upon the materials and the company picked. The upper price range can be as high as £71,600. The material costs are in most cases around£10,500.

Average price per House extensions job in 2026

Avg. price low

Avg. price low
£34,400

Avg. price

Avg. price
£52,000

Avg. price high

Avg. price high
£71,600

£72100

£54075

£36050

£18025

£0

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

House extensions installation cost in Horley 2026

Labour cost £27,000
Material cost £10,500
Waste removal £2,500
Time frame: 10-14 weeks
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House extensions on Google in Horley

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

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Searches that showed one of our pages for Horley, 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 Horley, 17 July to 14 October 2026

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Searches that showed our page for Forest Row

Horley

Horley is a town in Surrey that borders Surrey and West Sussex. It is south of the twin towns of Reigate and Redhill, and neighbouring Gatwick Airport and Crawley. The town is at an elevation of around 54 metres above sea level and covers 4.34 square miles. It has a population of 21232. The Horley Master Plan, passed by Reigate and Banstead Borough Council in February 2005, permits for the construction of nearly 2600 new houses. This will cover the Metropolitan Green Belt, which is permitted if the regional plan measures up to nationwide criteria, such as the capacity to display ecological sustainability and preserving the character of localities. Because of frequent and fast train links to London from Horley Railway Station, Horley certifies as a commuter town. Two thirds of the working population commute to London or Crawley, with the remaining one third working nearby. Horley has a significant economy of its own, including the presence of business parks and a long high street including industrial chain stores and independent companies. It was the home of the Matbro works, which produced forklift trucks between the 1950s and the 1980s and founded telescopic handlers, which were extremely popular with farmers and building and construction companies. A popular tourist attraction is the Archway Theatre, found under the arches of the Victoria Road train bridge; the theatre consists of a bar, an auditorium with a seat capacity of 95, and a studio theatre seating 40 people. For all your home upgrades, make sure to make use of trusted experts in Horley to make certain of quality.

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House extensions pros in Horley

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.

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FAQs

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.

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.

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 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.

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