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House Extension in city

House extension features a wide variety of benefits that makes it easy to see why the extension could be a fantastic uptick in the prospective cost of your residential or commercial property in terms of sales. So if you're seeking to develop a brand-new house extension but still not persuaded regarding the project, we're here to assist you. Being fully conscious any house building job is usually a hefty investment, there's a massive demand to be set on your choice prior to setting up the commencement of any work. So are house extensions worth it? Below are several of the leading advantages offered by house extensions to aid you determine if it's one of the most appropriate path for you.

 

What's Associated with Including an Extension?

The actions will certainly vary depending on the extent of your extension, yet you can anticipate some, otherwise all, of the listed below to be involved when adding an expansion to your home:

 

  1. Acquiring Building Regulations or Planning Permission (if called for as the extension is larger than permitted development).
  2. Inspecting your leasehold arrangement (if suitable) to make certain you can do what you intend to do.
  3. Hiring an architect  to draw the plans, considering your planned usage (kitchen, bathroom, research study).
  4. Hiring a competent builder with experience of larger projects.
  5. Calling your insurance supplier to let them understand of the prepared work ahead of it beginning.
  6. Getting parking permits if needed for your specialists to ensure they have very easy accessibility to your house.
  7. Seeing to it all planned job falls within allowed allowables.
  8. Clearing the area and digging deep into if essential, consisting of the removal of trees.
  9. Building job can start.

 

What is the price of a house extension in city?

If you're taking into consideration including a two floor house extension, then establishing a budget for this project would be a wonderful method to get going. Similar to a back extension, a two storey extension usually leaves the rest of the structure needing some work as well as, as a result of its dimension, this may suggest the re-development of the whole house - which is why they can be extremely costly. Several of the other influencing elements that can have large impact on a two storey house extension price consists of: your location, the dimension of the develop, intricacy of the layout (anything beyond the typical develop will normally call for even more know-how as well as time), the glazing to be integrated (the extra the glass utilized in the task, the extra the product cost), as well as the team used.

Average House extensions cost in St Leonards-on-sea

The regular cost of House extensions are £41,250 in St Leonards-on-sea. Costs vary based upon the materials and the company picked. The upper price range can be as high as £54,000. The material costs are in most cases around£10,500.

Average price per House extensions job in 2025

Avg. price low

Avg. price low
£33,500

Avg. price

Avg. price
£41,250

Avg. price high

Avg. price high
£54,000

£54500

£40875

£27250

£13625

£0

Prices based on actual House extensions costs for St Leonards-on-sea, as reported by local LeadsDoWork members.

House extensions installation cost in St Leonards-on-sea 2025

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

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House extensions Projects in St Leonards-on-sea in April 2025

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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 St Leonards-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...

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.

Options Home Improvements LTD

1 review(s)
Based: in Kent, ME8 0DB

Here at Options Home Improvements we specialize is the bespoke design & installation of PVCu & Aluminium, windows and doors, orangeries & conservatories in Gillingham, Kent & South East area. Options Home Improvements was started due to the seemi...

Latest review

Lisa V., ME1
5

House Extensions in Rochester

I haven't had the extension built yet but am planning to use them

Nicholas James Construction

7 review(s)
Based: in Bromley, BR1 3AX

From past fifteen years we have been established as the finest building and construction service provider to clients in Bromley and its surrounding areas.

Latest review

Jagdish K., HA3
5

House Extensions in Harrow

Absolutely pleasant appointment. Very patient and polite, listened carefully to detail and more of my background and his...

Similar Customer Enquiries for House extensions in St Leonards-on-sea

01 Jul

House Extensions

St. Leonards-on-Sea - TN38

Enquiry from: Rosie S

Start Date: Immediate

extend over attached garage. either to extend 2 en-suites & create a shared walk in wardrobe, or to do that + an annexe are you the property owner: owner of the property property type: detached lookin...

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07 Nov

House Extensions

St. Leonards-on-Sea - TN38

Enquiry from: Shammi B

Start Date: 1 to 3 months

room extension 12ft x9ft are you the property owner: owner of the property property type: semi detached looking for: single storey extension looking for: double storey extension do you have planning p...

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11 Feb

House Extensions

St. Leonards-on-Sea - TN37

Enquiry from: Siobhan R

Start Date: Immediate

4x5 meter extension remove 2 internal walls

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10 Jan

House Extensions

St. Leonards-on-Sea - TN37

Enquiry from: Wyle d

Start Date: Immediate

What kind of work are you looking to do? House Foundations Great, do you have plans or planning permission in place? Yes New build apartment block of 8 flats on three floors. Customer is currently i...

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02 Aug

House Extensions

St. Leonards-on-Sea - TN37

Enquiry from: Siobhan R

Start Date: Immediate

looking for double extension 3x 6 meters on the back of a 1930's semi detached. Downstairs to extend kitchen into Kitchen diner upstairs to either extend bedroom with ensuite or additional bedroom

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01 Dec

House Extensions

St. Leonards-on-Sea - TN38

Enquiry from: Lynette B

Start Date: 1 to 3 months

Are you the property owner: Owner of the property Have you considered getting your windows replaced to match a new conservatory: No Are you looking for Conservatory blinds: Yes Other Forms: 45, 63 Ag...

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11 May

House Extensions

St. Leonards-on-Sea - TN38

Enquiry from: E

Start Date: Immediate

two storey extension approx 16ft x 9ft. Possibly move staircase. single storey extension to other side (possibly bi fold doors).

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29 Oct

House Extensions

St. Leonards-on-Sea - TN38

Enquiry from: Mathew B

Start Date: Immediate

Two floor extension to recombine two flats into ne house Are you the property owner: Owner of the property Property Type: Semi detached Looking For: Double storey extension Do you have planning permis...

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22 Mar

House Extensions

St. Leonards-on-Sea - TN38

Enquiry from: Nicky D

Start Date: Immediate

Two storey side extension. Kitchen/diner downstairs and 2 bedrooms upstairs. 12'-7" by 22'-5". Approximate height of 2 storey extension inc roof 25'-7". Existing house concrete. Please contact to a...

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08 Apr

House Extensions

Eastbourne - BN22

Enquiry from: Amanda W

Start Date: Less than one month

customer in eastbourne areas is looking to do a couple of projects at the moment, and would like quotes for house extension.confirmed interest via sms and email at 08/04/2023 15:14.please call to arra...

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12 Sep

House Extensions

Hailsham - BN27

Enquiry from: James A

Start Date: Immediate

customer has a extensions & conversions project they are looking to have done, specially they want quotes for house extension. they are unsure of options so would like to discuss with a builder.confir...

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29 Aug

House Extensions

Eastbourne - BN20

Enquiry from: Laurence G

Start Date: 1 to 3 months

we want to extend and open the back of our 1920's house with a very simple box design. we are part of an art & crafts close . are you the property owner: owner of the property property type: detached...

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22 May

House Extensions

Polegate - BN26

Enquiry from: Alison D

Start Date: Immediate

We are building a 6m x 5m extension to our bungalow with a cathedral ceiling. We do not want to see any support for the internal roof trusses. We think using SIPs on the roof, approx roof area will ...

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15 Mar

House Extensions

Robertsbridge - TN32

Enquiry from: Matthew M

Start Date: Immediate

are you the property owner: owner of the property is this for a residential or commerial building: domestic other forms: house extension agreed to receive quotes for selected products: yes please cal...

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10 Mar

House Extensions

Bexhill-on-Sea - TN39

Enquiry from: Rebecca K

Start Date: Immediate

Hi I am enquiring about a quote for a 4m by 8m single storey extension. Planning permission is in place, so ready to start building now. Thanks Rebecca Customer is currently in the process of loo...

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21 Aug

House Extensions

Eastbourne - BN22

Enquiry from: Pradeep C

Start Date: 1 to 3 months

Are you the property owner: Owner of the property Property Type: Semi detached Looking For: Single storey extension Do you have planning permission: No Do you have plans drawn up: No Do you require Pl...

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08 Aug

House Extensions

Bexhill-on-Sea - TN39

Enquiry from: Patrick A

Start Date: Immediate

Property Type: Detached House Have you got a rough idea of the design you would like: Some Ideas How many bedrooms are you looking to have: 3-4 Bedrooms How many storeys are you looking for the prope...

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08 May

House Extensions

Hailsham - BN27

Enquiry from: Andy C

Start Date: Immediate

Submit your free quote for rated tradespeople

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09 Mar

House Extensions

Pevensey - BN24

Enquiry from: Caroline R

Start Date: 1 to 3 months

I would like a porch built Are you the property owner: Owner of the property Do you have planning permission: No What material are you looking for: uPVC What material would you like the roof made fro...

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10 Feb

House Extensions

Cranbrook - TN18

Enquiry from: Ben B

Start Date: Less than one month

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

Post a similar request >

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FAQs

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 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.

Can I extend the front of my house?

When it comes to extending a home, the rear of the house often comes to mind a lot more than the front. However, this doesn’t mean that you can’t extend the front of your house. This can be done either as part of a renovation project whereby the entire house is incorporated or it can also be done in isolation. It’s possible to extend the front of your house without the need to apply for a planning permission, however, there are a bunch of limitations you’d have to comply with if you wish to carry out with such a project. Sometimes, this may imply that extending to the front of your home is more tedious and tasking than extending your home’s rear. So exactly how far can you extend the front of your home without planning permission?

 

The short and simple answer to this question is 2 metres square area with a height not more than 3 metres. Generally, you do not need a planning permission to build a front porch as long as its area doesn’t go beyond 2 square metres from a public road or walkway. Also, a tiled or slated roof can be as much as 4 metres but other roofs must not go beyond 3 metres in height. If you want to extend the front of your home beyond the restrictions specified, then you’ll have to apply for a planning permission.

 

Extending the front of home can be quite costly, but this can be controlled by not building to the extension to the highest specification, not including an extension on kitchens or bathrooms and more.

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.

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