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House extension features a wide range of benefits which makes it very easy to see why the extension could be a excellent uptick in the potential cost of your building in regards to sales. So if you're looking to construct a new residence extension but still not encouraged concerning the project, we're below to help you. Being totally conscious any type of residence building and construction job is usually a heavy financial investment, there's a massive requirement to be set on your decision prior to setting up the start of any work. So are house extensions worth it? Below are a few of the top advantages provided by house extensions to help you decide if it's the most suitable course for you.

 

What's Associated with Building an Extension?

The steps will certainly differ depending on the range of your extension, but you can anticipate some, otherwise all, of the below to be entailed when adding an extension to your house:

 

  1. Acquiring Building Regulations or Planning Permission (if required as the extension is larger than permitted development).
  2. Examining your leasehold arrangement (if appropriate) to see to it you can do what you intend to do.
  3. Getting an architect  to create the plans, considering your intended use (kitchen, washroom, office).
  4. Hiring a competent builder with experience of larger projects.
  5. Calling your insurance coverage supplier to let them understand of the prepared work ahead of it starting.
  6. Getting car parking permits if required for your specialists to guarantee they have very easy access to your house.
  7. Making certain all planned job drops within permitted allowables.
  8. Clearing the space and digging deep into if required, consisting of the elimination of trees.
  9. Building job can start.

 

What is the price of a house extension in city?

If you're considering including a 2 floor house extension, after that establishing a budget for this project would be a excellent method to start. Similar to a back extension, a 2 storey extension usually leaves the rest of the structure needing some job and, due to its size, this might suggest the re-development of the entire house - which is why they can be extremely expensive. Some of the other affecting variables that can have large influence on a 2 floor house extension price consists of: your location, the size of the develop, intricacy of the layout (anything past the basic build will typically need even more experience as well as time), the glazing to be included (the much more the glass made use of in the task, the a lot more the material expense), in addition to the group made use of.

Average House extensions cost in Westcliff-on-sea

The regular cost of House extensions are £50,625 in Westcliff-on-sea. 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 Westcliff-on-sea, as reported by local LeadsDoWork members.

House extensions installation cost in Westcliff-on-sea 2026

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

Westcliff-on-Sea is a residential area of Southend-on-Sea, a seaside resort and unitary authority in Essex in south-east England. It is on the north shore of the reduced Thames Estuary, concerning 34 miles (55 kilometres) east of London. The primary buying location in Westcliff-on-Sea is Hamlet Court Road, where the outlet store Havens, established in 1901, continued to be the anchor store until its closure in 2017. Hamlet Court Road took its name from a manor house called the Hamlet Court, which based on land currently inhabited by Pavarotti's dining establishment and adjacent shops, dealing with towards the sea with sweeping gardens to the railway. The road later on became a strong independent retail area as well as quickly became famous outside the area as the Bond Street of Essex. There were lots of haberdashers and also professional shops, and it was not too uncommon to see chauffeurs awaiting their employers to arise from the stores.

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House extensions pros in Westcliff-on-sea

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...

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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 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.

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 much is a double house extension?

A double house extension is basically a construction to any aspect of your house that elevates up to offer two floors of space. It can be structured to suit your existing home in two storeys or as a side wing on a taller property. If you’re considering building a double house extension, then estimating the cost is a very important task to do before commencing the project. In this article, we’ll give you an idea of the cost of a double house extension so you can estimate yours accordingly.

The double house extension cost depends on several factors that’s specific to your home as well as your design choice. These includes:

• Location of your property. Places like London and the southeast will generally cost more than the other regions due to higher demands.

• Accessibility of the site. The ease of your site’s accessibility also plays a key role in the price.

• Size of the extension. The more the extension’s size in footprint and square metres, the higher the possible costs.

• Materials used in making the roof as well as the complexity of the roof design.

• Your choice of finishing. These includes flooring window and door frames, glazing, underfloor heating and roof lights.

• Your property’s soil type. Different types of soil requires varying treatments as well as materials to develop solid foundations.

Constructing a double house extension is a quite simple build in terms of technicality when its to the side or rear of your house as this can also help you save some money. Generally, considerably expanding your home’s space by building a double house extension will cost within the range of £1,500 per m2 to about £2,800 per m2.

Do I need my neighbours’ permission for an extension?

Well the reality is, sometimes, neighbours just don’t get along. With several individuals living in close proximity, it’s little surprise they tend to get on one another’s nerves from time to time. However, there’s a difference between having a tiff and being able to transform your house the way you want without having to obtain your neighbour’s approval.

The short and simple answer to this question is, not necessarily. However, you must first educate yourself by thinking about your extension and how it affects the houses around you. We’d strongly recommend you talk proposals through with your neighbour so as to avoid possible conflicts later. There are a number of reasons why your neighbour can protest to your new home extension plans. Let’s take a look!

 

  • In the event whereby your new extension is blocking their view or providing an unwanted shade on their property. Here, they have a legitimate reason to protest as no one would want their once sunny garden suddenly covered or plummet into shade.
  • In the event where it leads to a loss of privacy. For instance, if your new extension possesses a window which overlooks the neighbour’s property in any way. This is likely to be taken as an invasion of privacy and that has a little to no chance of being a welcomed idea.
  • If it’s a major project and going to take a lot of weeks before completion. The noise generated, especially when your neighbours are enjoying your summer holidays or weekends, can make their gardens not as relaxing as it used to be.
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Westcliff-on-sea House extensions pros are rated 4.4 out of 5 on average: 8 rated pros, 51 reviews, of 51 pros covering the area.
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