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House Extension in city

House extension features a wide variety of advantages which makes it easy to see why the extension could be a wonderful uptick in the prospective cost of your property in terms of sales. So if you're aiming to develop a new house extension but still not encouraged concerning the project, we're below to assist you. Being completely mindful any kind of house building and construction job is generally a heavy investment, there's a massive requirement to be set on your decision prior to scheduling the start of any job. So are house extensions worth it? Below are several of the top advantages offered by house extensions to assist you make a decision if it's one of the most suitable path for you.

 

What's Involved in Adding an Extension?

The steps will vary depending upon the extent of your extension, however you can expect some, if not all, of the listed below to be involved when adding an expansion to your home:

 

  1. Getting Building Regulations or Planning Permission (if called for as the extension is larger than permitted development).
  2. Examining your leasehold agreement (if suitable) to make sure you can do what you wish to do.
  3. Enlisting an architect  to draw the plans, considering your expected use ( kitchen area, shower room, study).
  4. Hiring a competent builder with experience of larger projects.
  5. Contacting your insurance policy service provider to let them know of the planned job ahead of it beginning.
  6. Obtaining auto parking permits if needed for your professionals to ensure they have simple access to your property.
  7. Seeing to it all planned job falls within permitted allowables.
  8. Cleaning the space and digging deep into if essential, consisting of the elimination of trees.
  9. Structure work can begin.

 

What is the price of a house extension in city?

If you're thinking about adding a two floor house extension, after that setting a budget for this job would certainly be a great means to begin. Similar to a back extension, a 2 floor extension normally leaves the remainder of the building needing some job and also, due to its dimension, this may imply the re-development of the entire house - which is why they can be really costly. A few of the various other affecting elements that can have large effect on a two floor house extension cost consists of: your location, the dimension of the construct, complexity of the design (anything beyond the basic build will generally need more experience and time), the glazing to be integrated (the more the glass utilized in the project, the much more the product expense), in addition to the group utilized.

Average House extensions cost in Colchester

The regular cost of House extensions are £42,500 in Colchester. Costs vary based upon the materials and the company picked. The upper price range can be as high as £56,000. The material costs are in most cases around£10,500.

Average price per House extensions job in 2026

Avg. price low

Avg. price low
£32,334

Avg. price

Avg. price
£42,500

Avg. price high

Avg. price high
£56,000

£56500

£42375

£28250

£14125

£0

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

House extensions installation cost in Colchester 2026

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

House extensions searches in September 2026

House extensions Projects in Colchester in August 2026

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Requests for quotations in Colchester in August 2026

10

Requests for House extensions quotations in Colchester in August 2026. 0% change from July 2026.

90

Requests for House extensions quotations in Essex in August 2026. -10% change from July 2026.

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

House extensions searches in cities and towns near Colchester August 2026

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Colchester

The large and important town of Colchester boasts a population of approximately 104,000 and it's located in the county of Essex. It is claimed to be the oldest town in Britain and was the capital of Roman Britain. Colchester is presently undergoing a great deal of regeneration which includes home expansion on greenfield sites. Ensure that you use reliable property improvement businesses in Colchester for your forthcoming project.

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Similar Customer Enquiries for House extensions in Colchester

13 Nov

House Extensions

Colchester - CO6

Enquiry from: David A

Start Date: Immediate

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

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22 May

House Extensions

Colchester - CO3

Enquiry from: Rosie F

Start Date: Immediate

customer in the colchester 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...

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22 Feb

House Extensions

Colchester - CO2

Enquiry from: Lewis H

Start Date: Immediate

integrated garage turned into playroom/utility area are you the property owner: owner of the property property type: semi detached looking for: single storey extension do you have planning permission:...

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28 Aug

House Extensions

Colchester - CO6

Enquiry from: Celwynn C

Start Date: Immediate

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

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19 Jul

House Extensions

Colchester - CO3

Enquiry from: Emma T

Start Date: Immediate

I have a 2 bed semi detatched end house. I require quotes for a 2 storey rear extension. Currently I have a ground floor wooden extension however this is not bricked or insulated. I would like to...

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14 Jul

House Extensions

Colchester - CO7

Enquiry from: Jeremy R

Start Date: Less than one month

a single-storey studio at the rear of the house, approx 5m wide x 4m.deep flat roof with lantern. one solid side wall, one semi- glazed side wall and glazed front wall. are you the property owner: own...

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24 Mar

House Extensions

Colchester - CO2

Enquiry from: Charlotte G

Start Date: Less than one month

miss requested quotes for house extension from a builder around colchester. they are considering a couple of projects at the moment.call anytime to arrange appointment to discuss. the information belo...

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09 Mar

House Extensions

Colchester - CO4

Enquiry from: Mohamed Z

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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20 Feb

House Extensions

Colchester - CO2

Enquiry from: Angela M

Start Date: Less than one month

rear lounge extension 5m x 4m with two vaulted gable ends joined to bungalow by a glass bridge corridor with back door. gable end full height window at far end and double patio doors on long wall with...

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03 Feb

House Extensions

Colchester - CO2

Enquiry from: Angela M

Start Date: Less than one month

rear lounge extension 5m x 4m with two vaulted gable ends joined to bungalow by a glass bridge corridor with back door. gable end full height window at far end and double patio doors on long wall with...

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21 Jan

House Extensions

Colchester - CO3

Enquiry from: Darren L

Start Date: Immediate

L shaped garden studio with double doors andlarge windows

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30 Nov

House Extensions

Colchester - CO2

Enquiry from: Angela M

Start Date: Immediate

single story rear extension 4mw x 5m l. lounge extension. vaulted roof with 2 glass panels each side in roof. glass end wall. 3m bifold on one side and opening fanlights in opposite wall. slightly slo...

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26 Nov

House Extensions

Colchester - CO2

Enquiry from: Angela M

Start Date: Immediate

single story rear extension 4mw x 5m l. lounge extension. vaulted roof with 2 glass panels each side in roof. glass end wall. 3m bifold on one side and opening fanlights in opposite wall. slightly slo...

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15 Jul

House Extensions

Colchester - CO2

Enquiry from: Mark S

Start Date: Immediate

a new porch built measuring roughly 3m2,with a dwarf wall,windows all round plus door and a tiled roof are you the property owner: owner of the property do you have planning permission: no what materi...

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01 Mar

House Extensions

Colchester - CO7

Enquiry from: Gerald S

Start Date: 1 to 3 months

2 story side extension Exterior red brick Cavity insulation + blocks Foundation & insulateted slab Pitched tile roof Exterior window & door aperture s (only) No interior floors or ceilings. No...

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14 Feb

House Extensions

Colchester - CO3

Enquiry from: Yvonne H

Start Date: Less than one month

Are you the property owner: Owner of the property Have you considered getting your windows replaced to match a new conservatory: No Other Forms: House Extension Agreed to receive quotes for selected p...

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31 Jan

House Extensions

Colchester - CO7

Enquiry from: Frank D

Start Date: Immediate

Rear extension 3m out x6m long with a flat roof incorporating a 3mx1.5m roof lantern or near this if cheaper off shelf lantern available

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05 Apr

House Extensions

Colchester - CO2

Enquiry from: CHARITY M

Start Date: Immediate

Double Storey Extension which includes 2x bedrooms Lounge Kitchen/dining room Bathroom *Driveway *Landscaping Are you the property owner: Relative of Owner Looking For: Double storey exten...

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05 Apr

House Extensions

Colchester - CO5

Enquiry from: Ken C

Start Date: Immediate

There is an existing roof wjich runs the lenghr of the house. I ewant timber frame resting on brick. A composite door and upvc side windows. Existing floor is decking which runs length of house. I wan...

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29 Mar

House Extensions

Colchester - CO5

Enquiry from: Ken C

Start Date: Immediate

There is an existing roof wjich runs the lenghr of the house. I ewant timber frame resting on brick. A composite door and upvc side windows. Existing floor is decking which runs length of house. I wan...

Post a similar request >

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FAQs

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.

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 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 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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