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House Extension in city

House extension includes a wide variety of benefits that makes it simple to see why the extension could be a wonderful uptick in the potential rate of your building in terms of sales. So if you're seeking to construct a new home extension yet still not persuaded about the project, we're below to assist you. Being totally conscious any type of house building job is usually a hefty financial investment, there's a huge demand to be set on your choice prior to scheduling the start of any kind of job. So are house extensions worth it? Below are a few of the top benefits offered by house extensions to aid you determine if it's the most suitable route for you.

 

What's Associated with Building an Extension?

The steps will differ relying on the range of your extension, but you can anticipate some, if not all, of the below to be entailed when adding an extension to your home:

 

  1. Acquiring Building Regulations or Planning Permission (if needed as the extension is larger than permitted development).
  2. Inspecting your leasehold agreement (if relevant) to make certain you can do what you wish to do.
  3. Employing an architect  to draw up the plans, considering your planned usage (kitchen, restroom, research study).
  4. Hiring a competent builder with experience of larger projects.
  5. Contacting your insurance company to allow them understand of the planned work ahead of it beginning.
  6. Getting car parking permits if needed for your professionals to guarantee they have easy accessibility to your property.
  7. Ensuring all prepared job drops within permitted allowables.
  8. Clearing the area and also digging deep into if needed, 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 adding a 2 floor house extension, then setting a budget for this job would be a terrific method to begin. Similar to a rear extension, a two floor extension normally leaves the remainder of the building requiring some work as well as, due to its size, this may suggest the re-development of the entire house - which is why they can be really expensive. Some of the other influencing variables that can have large impact on a 2 storey house extension expense includes: your area, the size of the build, intricacy of the layout (anything beyond the conventional construct will generally need even more know-how as well as time), the glazing to be incorporated (the more the glass made use of in the project, the a lot more the product cost), in addition to the team made use of.

Average House extensions cost in Seaford

The regular cost of House extensions are £41,250 in Seaford. 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 Seaford, as reported by local LeadsDoWork members.

House extensions installation cost in Seaford 2025

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

House extensions searches in May 2025

House extensions Projects in Seaford in April 2025

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Requests for quotations in Seaford in April 2025

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Requests for House extensions quotations in Seaford in April 2025. -100% change from March 2025.

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Requests for House extensions quotations in East Sussex in April 2025. -33% change from March 2025.

Source: Numbers calculated based on the search volumes in major search engines

House extensions searches in cities and towns near Seaford April 2025

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Requests for quotations in Brighton in April 2025

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Requests for quotations in Worthing in April 2025

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Requests for quotations in Arundel in April 2025

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Requests for quotations in Hove in April 2025

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Requests for quotations in Eastbourne in April 2025

Seaford

Seaford is a coastal town in the county of East Sussex, on the southern coastline of England. East Sussex is a well-liked area for commuters due to its proximity to the capital city of London and also excellent train connections.

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Similar Customer Enquiries for House extensions in Seaford

22 Apr

House Extensions

Seaford - BN25

Enquiry from: Matt H

Start Date: Immediate

Quote for works based on a previous planning application

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13 Sep

House Extensions

Seaford - BN25

Enquiry from: Valerie A

Start Date: 1 to 3 months

glass box to rear of bungalow approx depth 2.5 m x 3.5 m length. are you the property owner: owner of the property property type: detached looking for: single storey extension do you have planning pe...

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25 Feb

House Extensions

Seaford - BN25

Enquiry from: Lee P

Start Date: Immediate

2 storey extension approx 14 square metres Are you the property owner: Owner of the property Property Type: Semi detached Looking For: Double storey extension Do you have planning permission: No Do yo...

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02 Mar

House Extensions

Seaford - BN25

Enquiry from: Sophia T

Start Date: 3+ months

Pitched roof extension and new kitchen. Ideally glass roof or parts glass, bi-fold doors.

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25 Jun

House Extensions

Seaford - BN25

Enquiry from: Jo P

Start Date: Immediate

two-storey side extension measuring approx. 3m x 4m

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25 Mar

House Extensions

Seaford - BN25

Enquiry from: Lisa F

Start Date: Immediate

Small dormer extension to bathroom. - : - : - :

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22 Apr

House Extensions

Brighton - BN2

Enquiry from: Matt H

Start Date: Immediate

A quote for building works on a property we are trying to buy, based on a previous planning application. All drawings can be provided

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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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20 Dec

House Extensions

Peacehaven - BN10

Enquiry from: Sally G

Start Date: 1 to 3 months

customer in peacehaven area has requested that we arrange quotes for their house extension project.ms are considering various options and would like to discuss with a builder directly.please call to d...

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08 Nov

House Extensions

Brighton - BN1

Enquiry from: RACHIT M

Start Date: Immediate

customer in the brighton area made an enquiry a couple of projects including house extension.call anytime and arrange an appointment to discuss. below is some details about this project: are you the p...

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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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15 Apr

House Extensions

Brighton - BN2

Enquiry from: Vikki R

Start Date: Less than one month

extension at rear of (flat) property to increase living space. are you the property owner: owner of the property property type: other looking for: single storey extension do you have planning permissi...

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01 Dec

House Extensions

Hove - BN3

Enquiry from: Kamal B

Start Date: Less than one month

customer made an online enquiry for house extension and confirmed on sms and email they would like a call with a builder to discuss prices.please call to arrange an appointment to quote. are you the p...

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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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07 Jan

House Extensions

Brighton - BN2

Enquiry from: ELEANOR B

Start Date: Immediate

are you the property owner: owner have you considered getting your windows replaced to match a new conservatory: no other forms: house extension agreed to receive quotes for selected products: yes pl...

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10 Jan

House Extensions

Hove - BN3

Enquiry from: Pavel M

Start Date: Immediate

6x3: 18m2 - 2 story extension + loft space (every floor single room with 2 windows) Email only, NO calls!! Thank you.

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09 Sep

House Extensions

Brighton - BN1

Enquiry from: Andrew S

Start Date: Less than one month

Knock down garage and workshop Build 2 storey extension of 10ft x 22ft Build attached garage of approx 8ft x 15ft Knock through upstairs and install additional ensuite to master Knock through down...

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04 Mar

House Extensions

Brighton - BN2

Enquiry from: Paul C

Start Date: Immediate

We are looking at getting at least 3 quotes together for a single storey extension added into a garage conversion. New concrete steps access to be included in quote on the other side of the house. ...

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23 Oct

House Extensions

Brighton - BN1

Enquiry from: Patrick R

Start Date: 1 to 3 months

Homeowner Please contact to appoint

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24 Aug

House Extensions

Hove - BN3

Enquiry from: Qasim H

Start Date: Immediate

Extension of rear house to replace a make shift conservatory (just glass with metal frame - relatively easy to remove) however it is raised about 2-3 ft off the ground on a wooden platform - not sure ...

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FAQs

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.

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 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.

how big can my house extension be?

The holy grail of home extensions is basically the need for additional space for living as well as leisure. However, before commencing your home extension project, you’d probably want to know just how big your new building can be. In this article, you’ll find the answer to this question which is also frequently asked by many other home or property owners in the UK.

Besides your budget, there are two other major influencing factors that can determine just how much extra room that can be added. These factors include whether you wish to carry out the extension project under Permitted Development rights which is usually for a smaller project or you’d prefer to opt for a larger project which is covered by Planning Permission.

Apart from the limitations in the size of an extension under Permitted Development, the extensions are also a lot more affordable and consumes less time when compared to the extensions under planning permission. So what exactly is the size limit for an extension under Permitted Development and the ones under Planning Permission?

For a single storey extension, the maximum size that can be constructed without having to submit an application for Planning Permission includes:

• An extension should have a maximum length of 6m, if you reside in a terraced home or a semi-detached property.

• Extensions for detached properties can have a maximum length of 8m.

• The extension built must not go beyond half your garden’s area.

• The extension should have a maximum height of 4 metres, but in the event whereby the extension is situated within 2 metres of the boundary of your property, it should not exceed a height of 3 metres.

• The extension should not be higher than the highest part of the existing house’s roof.

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