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House Extension in city

House extension includes a wide range of benefits that makes it easy to see why the extension could be a fantastic uptick in the possible rate of your property in regards to sales. So if you're wanting to construct a brand-new house extension however still not persuaded concerning the task, we're below to aid you. Being totally conscious any type of house construction job is generally a heavy financial investment, there's a huge requirement to be set on your choice prior to scheduling the commencement of any job. So are house extensions worth it? Below are several of the leading benefits used 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 actions will certainly differ depending upon the extent of your extension, but you can expect some, otherwise all, of the listed below to be involved when including an expansion to your house:

 

  1. Acquiring Building Regulations or Planning Permission (if needed as the extension is larger than permitted development).
  2. Checking your leasehold contract (if appropriate) to see to it you can do what you want to do.
  3. Employing an architect  to draw up the plans, considering your expected use (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. Obtaining car park allows if required for your specialists to guarantee they have easy access to your house.
  7. Seeing to it all planned work falls within permitted allowables.
  8. Cleaning the space and also excavating if required, including the elimination of trees.
  9. Structure job can start.

 

What is the expense of a house extension in city?

If you're thinking about adding a two floor house extension, after that establishing a allocate this job would certainly be a terrific way to start. Similar to a rear extension, a 2 storey extension usually leaves the remainder of the structure requiring some work and also, due to its size, this might indicate the re-development of the whole house - which is why they can be really pricey. A few of the various other affecting aspects that can have large influence on a 2 storey house extension expense includes: your area, the size of the build, complexity of the layout (anything beyond the conventional develop will normally call for even more competence as well as time), the glazing to be included (the a lot more the glass used in the project, the a lot more the product expense), as well as the group utilized.

Average House extensions cost in Welwyn

The regular cost of House extensions are £51,875 in Welwyn. Costs vary based upon the materials and the company picked. The upper price range can be as high as £72,000. The material costs are in most cases around£10,500.

Average price per House extensions job in 2025

Avg. price low

Avg. price low
£34,250

Avg. price

Avg. price
£51,875

Avg. price high

Avg. price high
£72,000

£72500

£54375

£36250

£18125

£0

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

House extensions installation cost in Welwyn 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 Welwyn in April 2025

168

Requests for quotations in Welwyn in April 2025

1

Requests for House extensions quotations in Welwyn in April 2025. 0% change from March 2025.

130

Requests for House extensions quotations in Hertfordshire in April 2025. 0% change from March 2025.

We noted 168 requests for house quotations in Welwyn. Of these quote requests the number of house extensions quotes in Welwyn was 1. Quotatis would have been in a position to match these customers with as many as four suitable installers who were available for work within Welwyn during those times. Ask for a free property survey from trustworthy companies in Welwyn.

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

House extensions searches in cities and towns near Welwyn April 2025

35

Requests for quotations in St Albans in April 2025

11

Requests for quotations in Welwyn Garden City in April 2025

10

Requests for quotations in Harpenden in April 2025

7

Requests for quotations in Hatfield in April 2025

1

Requests for quotations in Welwyn in April 2025

Welwyn

Welwyn (population 8,425) is a village and also civil parish in Hertfordshire, England. The parish additionally consists of the towns of Digswell as well as Oaklands. It is occasionally called Old Welwyn to distinguish it from the much more recent negotiation of Welwyn Garden City, concerning a mile to the south, though some homeowners dislike the recommendation of inferiority or irrelevance that often tends to be implied by the moniker "Old" and also prefer Welwyn Town. When saying where they live, locals will typically be asked, 'Welwyn or Welwyn Garden City?', as the latter's title is typically shortened to simply Welwyn. To prevent confusion, there were strategies to change Welwyn's name to 'Welwyn Minster' in 1990 but this met with neighborhood resistance as well as the idea was abandoned. The name is derived from Old English welig definition "willow", describing the trees that nestle on the financial institutions of the River Mimram as it streams via the town. The name itself is a development from weligun, the dative form of the word, and so is more specifically equated as "at the willows", unlike nearby Willian which is most likely to suggest merely "the willows". Through having its name derived from welig instead of sealh (the more commonly mentioned Old English word for willow), Welwyn is possibly cognate with Heligan in Cornwall whose name is stemmed from helygen, the Cornish word for willow that shares an origin with welig. The neighboring contemporary town of Digswell (around Welwyn North train station) was originally called 'High Welwyn' when first created at the start of the 20th century.

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House extensions pros in Welwyn

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.

Similar Customer Enquiries for House extensions in Welwyn

25 Sep

House Extensions

Welwyn Garden City - AL7

Enquiry from: Halima T

Start Date: Immediate

Customer is looking for House Extension quotes. They are unsure of options so would like to discuss. Confirmed interest via SMS//phone Customer lives in Welwyn Garden City area Please call to arrange...

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14 Aug

House Extensions

Welwyn - AL6

Enquiry from: Kate P

Start Date: Less than one month

we would like an extension to be used as a lounge. the area is approx 6m x 4m are you the property owner: owner of the property looking for: single storey extension do you have planning permission: n...

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27 Apr

House Extensions

Welwyn Garden City - AL7

Enquiry from: Manuel P

Start Date: Immediate

customer in welwyn garden city areas is looking to do a couple of projects at the moment, and would like quotes for house extension.confirmed interest via email at 27/04/2021 17:59.please call to arra...

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03 May

House Extensions

Welwyn - AL6

Enquiry from: Siva G

Start Date: Immediate

are you the property owner: owner have you considered getting your windows replaced to match a new conservatory: no other forms: kitchen design & installation, house extension agreed to receive quote...

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08 May

House Extensions

Welwyn Garden City - AL7

Enquiry from: Richard B

Start Date: Immediate

11sqm ground floor extension with first floor extension approx 12msq

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08 Feb

House Extensions

Welwyn - AL6

Enquiry from: Jonathan W

Start Date: Immediate

Single storey extension 52m2 Are you the property owner: Owner of the property Property Type: Semi detached Looking For: Single storey extension Do you have planning permission: Yes Do you have plans ...

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09 Dec

House Extensions

Welwyn Garden City - AL7

Enquiry from: Scott W

Start Date: Immediate

We live in a terrace house that is roughly 6 metres wide with the kitchen and living room spanning across the 6 metres. We would like to extend the back of the house by approx 3 metres and the full si...

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08 Nov

House Extensions

Welwyn Garden City - AL7

Enquiry from: Rey T

Start Date: 1 to 3 months

Porch with brick 1.5x2.5 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 from...

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04 Sep

House Extensions

Welwyn Garden City - AL7

Enquiry from: Cindy J

Start Date: Less than one month

Demolish garage. Rebuild garage with bedroom above. Are you the property owner: Owner of the property Property Type: Semi detached Do you have planning permission: No Looking For: Double storey extens...

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06 Jun

House Extensions

Welwyn - AL6

Enquiry from: Tom S

Start Date: Less than one month

Looking to build an extension on side of property. Roughly 3.5m by 6m. 3.5m high. We would like a semi pitched roof/ part flat

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21 Nov

House Extensions

Welwyn Garden City - AL7

Enquiry from: H

Start Date: Immediate

Extenstion to Living room towards garden. I wanted to consider a conservatory, However, wanted to check how much would be cost to go for extension with brick walls instead of conservatory. Also, do we...

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26 Aug

House Extensions

Welwyn Garden City - AL7

Enquiry from: Sarah K

Start Date: Immediate

1. Single storey room extension 3m2 in total including fitting of 2 radiators, electrics inc light fixtures, sockets/RJ45 and coaxial satellite cable TV cabling , bi fold screen doors, 3 velux windows...

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11 May

House Extensions

Welwyn Garden City - AL7

Enquiry from: James K

Start Date: Immediate

2-storey extension, moving and remodelling the kitchen. Potentially also expanding and remodelling the bathroom. Are you the property owner: Owner of the property Property Type: Other Looking For: Dou...

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12 Apr

House Extensions

Welwyn Garden City - AL7

Enquiry from: Oliver K

Start Date: Immediate

Hi I'm looking to convert a bungalow into a 2 storey house in Welwyn Garden City and I was hoping for an idea of what the cost might be. The square footage of the bungalow is circa 1248 sq ft and I...

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11 Apr

House Extensions

Welwyn - AL6

Enquiry from: John H

Start Date: Immediate

Above flat roof double garage extension, with bedroom on suit and dressing area to 4 bedroom detached property. Internal refurbishment, move stairs extend 2 bathrooms add 3rd on suit shower, add utili...

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11 Apr

House Extensions

Welwyn Garden City - AL7

Enquiry from: Amber O

Start Date: Immediate

To possibly build a ground floor extension out the back and possibly extend to the side first floor.

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08 Mar

House Extensions

Welwyn - AL6

Enquiry from: Jill D

Start Date: Immediate

Extension to house of or indoor pool, also to change garage and kitchen desgin

Post a similar request >

05 Dec

House Extensions

Welwyn Garden City - AL7

Enquiry from: Belinda J

Start Date: Immediate

Kitchen Remodelling and conservatory replacement Are you the property owner: Owner of the property Looking For: Single storey extension Do you have planning permission: Yes Do you have plans drawn up:...

Post a similar request >

29 Sep

House Extensions

Welwyn - AL6

Enquiry from: Wade M

Start Date: 3+ months

I am looking to build an extension from my living room. I would like to open up the room into a primarily glass room with one side brick and the other 2 sides glass (possibly bi-fold doors). The roof ...

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22 Jun

House Extensions

Welwyn Garden City - AL7

Enquiry from: Peter S

Start Date: 3+ months

Customers description : 5m x 3m extension single story. Flat roof with roof lantern Bifold doors approx 4-5m across width of extension Are you the property owner: Owner of the property Property Ty...

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FAQs

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.
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.

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 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.

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