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House Extension in city

House extension includes a wide range of advantages which makes it simple to see why the extension could be a wonderful uptick in the possible cost of your building in terms of sales. So if you're seeking to construct a new house extension however still not convinced about the project, we're below to assist you. Being fully aware any type of residence building and construction work is usually a hefty financial investment, there's a significant demand to be set on your decision before arranging the start of any type of work. So are house extensions worth it? Below are several of the top advantages provided by house extensions to help you decide if it's one of the most suitable route for you.

 

What's Involved in Building an Extension?

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

 

  1. Obtaining Building Regulations or Planning Permission (if called for as the extension is larger than permitted development).
  2. Examining your leasehold arrangement (if applicable) to make sure you can do what you want to do.
  3. Employing an architect  to draw up the plans, considering your intended usage ( cooking area, shower room, study).
  4. Hiring a competent builder with experience of larger projects.
  5. Calling your insurance coverage provider to let them understand of the planned work ahead of it beginning.
  6. Acquiring car park allows if required for your specialists to ensure they have very easy access to your residential property.
  7. Seeing to it all intended job drops within permitted allowables.
  8. Cleaning the space and also excavating if essential, including the elimination of trees.
  9. Building job can begin.

 

What is the price of a house extension in city?

If you're taking into consideration including a 2 storey house extension, then setting a allocate this task would be a excellent way to get going. Comparable to a back extension, a two storey extension generally leaves the remainder of the building needing some work and, due to its dimension, this might imply the re-development of the whole house - which is why they can be very expensive. Several of the various other influencing variables that can have big impact on a 2 floor house extension price consists of: your area, the dimension of the build, complexity of the layout (anything beyond the standard construct will usually call for more competence and also time), the glazing to be integrated (the extra the glass utilized in the project, the more the material expense), in addition to the team utilized.

Average House extensions cost in Marlborough

The regular cost of House extensions are £50,000 in Marlborough. Costs vary based upon the materials and the company picked. The upper price range can be as high as £68,000. The material costs are in most cases around£10,500.

Average price per House extensions job in 2026

Avg. price low

Avg. price low
£42,000

Avg. price

Avg. price
£50,000

Avg. price high

Avg. price high
£68,000

£68500

£51375

£34250

£17125

£0

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

House extensions installation cost in Marlborough 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 Marlborough in August 2026

583

Requests for quotations in Marlborough in August 2026

3

Requests for House extensions quotations in Marlborough in August 2026. -25% change from July 2026.

40

Requests for House extensions quotations in Wiltshire in August 2026. -20% change from July 2026.

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

House extensions searches in cities and towns near Marlborough August 2026

119

Requests for quotations in Swindon in August 2026

17

Requests for quotations in Chippenham in August 2026

10

Requests for quotations in Malmesbury in August 2026

10

Requests for quotations in Devizes in August 2026

9

Requests for quotations in Melksham in August 2026

Marlborough

Marlborough is a market community and civil parish in the English region of Wiltshire on the Old Bath Road, the old highway from London to Bath. It flaunts the second widest high road in Britain, after Stockton-on-Tees. The town is on the River Kennet, 24 miles (39 km) north of Salisbury and also 10 miles (16 kilometres) south-southeast of Swindon. Marlborough has an oceanic climate somewhat influenced by its inland setting and also at 124 metres' altitude is extra prone to frost than southerly coastal locations. In 2004 Marlborough commemorated 800 years of its Town Charter. Among the celebrations were a road play by the Marlborough Players titled Wheels of Time, and a see from HRH Prince Charles.

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Similar Customer Enquiries for House extensions in Marlborough

18 Nov

House Extensions

Marlborough - SN8

Enquiry from: Ellie T

Start Date: 1 to 3 months

Are you the home owner of that property? YES Are you replacing an existing porch or is this a new build? New Build What material do you require, UPVC? Brick and UPVC or wood What colour do you want it...

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26 Jan

House Extensions

Marlborough - SN8

Enquiry from: Malbranche S

Start Date: Immediate

front sinle storey with pitched roof and sun roof light. Move the entrance of the house to the ed of the extension, adding a new porch door and paving the front of the extension. Wood burner added to ...

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16 Jan

House Extensions

Marlborough - SN8

Enquiry from: Malbranche S

Start Date: Immediate

front sinle storey with pitched roof and sun roof light. Move the entrance of the house to the ed of the extension, adding a new porch door and paving the front of the extension. Wood burner added to ...

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25 Jul

House Extensions

Marlborough - SN8

Enquiry from: Fabiana C

Start Date: Immediate

New extension an connection with the existing house. Double storey. Customer is currently in the process of looking for quotes to add a Double storey extension to their property. Are you the propert...

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06 Jul

House Extensions

Marlborough - SN8

Enquiry from: Adam M

Start Date: Immediate

side return kitchen extension 3.5 x 7m to mid terrace with wc relocation and rear double doors to new full width rear. Velux roof or similar x 3. New mid priced kitchen and underfloor heating. CH syst...

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24 Oct

House Extensions

Marlborough - SN8

Enquiry from: Adam M

Start Date: 3+ months

Extending existing kitchen with side return extension, moving cloakroom w.c. & opening up rear with bifold doors or similar. Dimensions (est.) of additional 2m out by 7m long. Rsj's required to suppor...

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30 Dec

House Extensions

Swindon - SN25

Enquiry from: Shiva R

Start Date: Immediate

customer made an enquiry for house extension and confirmed on the local quotes site they would like quotes from a builder.mr lives in the area and would like a call to discuss options.see below detai...

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23 Sep

House Extensions

Swindon - SN3

Enquiry from: Yane R

Start Date: Immediate

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

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25 Aug

House Extensions

Swindon - SN3

Enquiry from: Moises F

Start Date: Immediate

customer in swindon 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 25/08/2024 16:34.please call to arrange...

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18 Jun

House Extensions

Swindon - SN5

Enquiry from: Barry C

Start Date: Immediate

We are purchasing a bungalow in Plymstock Devon and would like to put an extension on rear giving us a kitchen diner approx 12ft deep and 24ft wide with bi fold doors to garden and pitched roof if pos...

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05 May

House Extensions

Swindon - SN1

Enquiry from: Nathan S

Start Date: Immediate

Looking to convert garage to a bedroom on this house , in process of buying it so looking for quotes for work in next 3 months https://www.charles-harding.co.uk/property-details/olt240033/ Garage w...

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09 Oct

House Extensions

Swindon - SN1

Enquiry from: Cornelius A

Start Date: 1 to 3 months

customer in swindon area made an enquiry for house extension online. please call to arrange an appointment to discuss options are you the property owner: owner of the property property type: other lo...

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05 Mar

House Extensions

Devizes - SN10

Enquiry from: Ben M

Start Date: Immediate

Two storey extension. With an approximate footprint of 25 to 30 square metres.

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18 Feb

House Extensions

Swindon - SN4

Enquiry from: Russell A

Start Date: Immediate

2 storey side extension with double garage to the front of the property with an office above

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04 Jul

House Extensions

Swindon - SN25

Enquiry from: Allwin S

Start Date: Immediate

Rear house extension 8 x 3 m Bifold door 4 x 2.1m Lantern 4 x 1.5m Laminated floor

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28 Apr

House Extensions

Swindon - SN25

Enquiry from: Rasim S

Start Date: Immediate

customer in swindon areas is looking to do a couple of projects at the moment, and would like quotes for house extension.confirmed interest via telephone and email at 28/04/2022 22:42.please call to a...

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17 Apr

House Extensions

Swindon - SN25

Enquiry from: Owen B

Start Date: Immediate

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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02 Oct

House Extensions

Swindon - SN3

Enquiry from: Marius I

Start Date: Immediate

customer in swindon 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 02/10/2021 09:04.please call to arrange...

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14 Jul

House Extensions

Swindon - SN5

Enquiry from: Man R

Start Date: Immediate

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

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03 Jul

House Extensions

Swindon - SN1

Enquiry from: Neston F

Start Date: Immediate

first storey bedroom extension. are you the property owner: relative of owner property type: detached looking for: double storey extension do you have planning permission: no do you have plans drawn u...

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FAQs

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.

What types of extension are there?

There are many different types of extension. For example, you could install an orangery, flat or pitched roof extension, over-structure extension, single or double storey extension or a glass box extension. Which one of these is most suitable will depend on your existing property.

where to start with a house extension?

Have you decided to improve your property instead of moving? The common problem most homeowners face after deciding to embark on a home extension project is not knowing where to start. In this article we’ll walk you through everything you need to consider and put in place before commencement of your home extension project.

• Is the extension worth it?

Before breaking the bank, you must be sure that the project will add good value to your home. In terms of “value, this is not only limited to the financial gain after disposal of the property, but also several other juicy benefits to be derived from extending your home like an extra living space for the household to spread out and more.

• Do you need a planning permission?

Check with your local authority to determine whether or not you’ll require to submit an application. You can also consult a building expert like an architect for advice.

• What are the building regulation?

Even though planning permission can be dodged, you can not avoid building regulations. These regulations are the set national minimum standards for construction and design which you must comply with to ensure the safety of the individuals in and around it.

• Who will design the extension?

You have to decided whether you’ll hire a professional architect to design the extension or not.

• Who will manage the building work?

If your home extension project is designed and built by a professional company, they’ll be responsible for the management. However, if you decide to use an architect or designed it yourself, you’ll have to hire a main contractor to manage the build.

• How to set the budget?

There are so many factors that can affect the cost of an extension, so it’s better to get the costs from your builder before proceeding.

• Do I need yo inform my home insurance firm?

Absolutely! This is very important as the new extension may affect the rebuilding cost of your property which could have an impact on the policy premium.

• Do I need to inform my neighbours?

It’s very important to discuss your plan with your neighbours before applying for a planning permission and communicate about the concerns they might have.

Can an extension add value to my home?

Yes. Most extensions will add substantial value to your home, and you may find that the extension adds more value than it cost. However, it’s important to be sure that the home remains balanced. Extending your garage and leaving your property with no parking spaces, for example, may impact your ability to sell.

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