House Extension in city

Find House Extension Prices in city

Home > Extensions & Conversions Projects > House extensions > Welwyn Garden City

House Extension in city

House extension features a wide range of advantages which makes it very easy to see why the extension could be a fantastic uptick in the prospective cost of your residential property in terms of sales. So if you're wanting to develop a brand-new residence extension but still not persuaded about the job, we're below to assist you. Being totally aware any type of home building job is generally a heavy financial investment, there's a big demand to be set on your choice before scheduling the beginning of any kind of job. So are house extensions worth it? Below are some of the top advantages used by house extensions to assist you choose if it's one of the most suitable course for you.

 

What's Involved in Adding an Extension?

The steps will vary relying on the range of your extension, yet you can anticipate some, otherwise all, of the listed below to be involved when adding an expansion to your residence:

 

  1. Acquiring Building Regulations or Planning Permission (if needed as the extension is larger than permitted development).
  2. Inspecting your leasehold contract (if appropriate) to see to it you can do what you wish to do.
  3. Hiring an architect  to create the plans, considering your expected use ( kitchen area, washroom, research study).
  4. Hiring a competent builder with experience of larger projects.
  5. Contacting your insurance supplier to allow them recognize of the intended job ahead of it starting.
  6. Obtaining car park permits if needed for your service providers to ensure they have easy accessibility to your residential property.
  7. Making sure all prepared work falls within allowed allowables.
  8. Clearing up the area as well as excavating if essential, consisting of the elimination of trees.
  9. Building work can begin.

 

What is the expense of a house extension in city?

If you're taking into consideration adding a 2 floor house extension, then setting a budget for this job would be a excellent method to begin. Similar to a rear extension, a 2 floor extension generally leaves the remainder of the building needing some job as well as, due to its dimension, this may imply the re-development of the entire house - which is why they can be very pricey. A few of the other affecting aspects that can have huge impact on a 2 storey house extension expense includes: your area, the size of the build, complexity of the layout (anything past the common construct will normally need even more proficiency and time), the glazing to be incorporated (the much more the glass utilized in the task, the more the material cost), as well as the group utilized.

Average House extensions cost in Welwyn Garden City

The regular cost of House extensions are £51,875 in Welwyn Garden City. 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 Garden City, as reported by local LeadsDoWork members.

House extensions installation cost in Welwyn Garden City 2025

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

House extensions searches in January 2025

House extensions Projects in Welwyn Garden City in December 2024

1,825

Requests for quotations in Welwyn Garden City in December 2024

11

Requests for House extensions quotations in Welwyn Garden City in December 2024. 0% change from December 2024.

130

Requests for House extensions quotations in Hertfordshire in December 2024. 0% change from December 2024.

We noted 1,825 requests for property quotations within Welwyn Garden City. Of these quotation requests the number of house extensions quotes within Welwyn Garden City was 11. Quotatis would have been able to match these customers with up to four suitable contractors who were available for work in Welwyn Garden City during those times. Request a free property survey from trustworthy companies in Welwyn Garden City.

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

House extensions searches in cities and towns near Welwyn Garden City December 2024

35

Requests for quotations in St Albans in December 2024

11

Requests for quotations in Welwyn Garden City in December 2024

10

Requests for quotations in Harpenden in December 2024

7

Requests for quotations in Hatfield in December 2024

1

Requests for quotations in Welwyn in December 2024

Welwyn Garden City

Welwyn Garden City is a town inside the Welwyn Hatfield borough of Hertfordshire. It's unique as both a garden city in addition to a new town, with a populace of 43,252, and it is located just twenty miles from London within East England. With its traditional importance, Welwyn Garden City attracts many visitors all through the year. For the right price for the next project do a comparison of quotations from vetted companies in Welwyn and make sure a high quality finish for the work you would like carried out.

Looking for House extensions in Welwyn Garden City?

Get free quotes from local builders

Get free quotes

House extensions pros in Welwyn Garden City

Jassi Builders LTD

2 review(s)
Based: in Hayes, UB4 9YD

Hi Jassi Builders LTD here, I am a specialist in planning, designing and building control services. I make sure that I have completed all my work on perfect time and leave customers in complete satisfaction. We do all types of loft conversions, exten...

Latest review

Julian F., HP2
4

House Extensions in Hemel Hempstead

No quote received

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 Garden City

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...

Post a similar request >

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...

Post a similar request >

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

Post a similar request >

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...

Post a similar request >

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...

Post a similar request >

10 Oct

House Extensions

Welwyn Garden - AL8

Enquiry from: Matthew F

Start Date: Immediate

4th bed and bathroom extension

Post a similar request >

08 Sep

House Extensions

Welwyn Garden - AL8

Enquiry from: Helen G

Start Date: Immediate

Knock down existing single storey extension, erect new single storey extension with pendant roof light or flat roof light (cost dependent) Customer is currently in the process of looking for quotes ...

Post a similar request >

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...

Post a similar request >

06 Mar

House Extensions

Welwyn Garden - AL8

Enquiry from: Jack N

Start Date: Immediate

Property owner House extension Supplied and fitted Please call top appoint

Post a similar request >

05 Mar

House Extensions

Welwyn Garden - AL8

Enquiry from: Jack N

Start Date: Immediate

Single story above the garage and extension behind the house. Are you the property owner: Owner of the property Property Type: Semi detached Do you have planning permission: Yes Do you have plans draw...

Post a similar request >

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...

Post a similar request >

26 Oct

House Extensions

Welwyn Garden - AL8

Enquiry from: SHAMMI F

Start Date: 3+ months

Remodel kitchen to be open plan with the extension

Post a similar request >

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...

Post a similar request >

20 May

House Extensions

Welwyn Garden - AL8

Enquiry from: Luke L

Start Date: 3+ months

Single storey rear extension to kitchen Homeowner Please contact to appoint

Post a similar request >

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...

Post a similar request >

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...

Post a similar request >

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.

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 >

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...

Post a similar request >

01 Mar

House Extensions

Welwyn Garden - AL8

Enquiry from: Keith W

Start Date: Immediate

Flat roof rear extension, to replace large bay window therefore existing opening, approx 4m x 4m to butt onto same extension size next door Double glazed French doors and window to garden

Post a similar request >

Local & reliable builders near me

Tell us about your house extensions project

Answer a few quick questions, so we can match you with local builders who can help.

Find up to 4 builders in Welwyn Garden City

Get free, no-obligation local house extensions quotes from 4 verified builders working in Welwyn Garden City.

Hire with confidence

Compare customer reviews, services and prices, and choose the right tradesperson for you.

Our reviews

Average

Would highly recommend

Would highly recommend, they found me a firm which I was happy with a quote they give me and went ahead and had my job done within 2 days of enquiring.

Good easy way to find a selection of…

Good easy way to find a selection of trades you need all in one place.

Love LeadsDoWork it's a big part of my …

Love LeadsDoWork it's a big part of my Business I would recommend to anyone

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.

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 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.

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.
Placholder Image

Other Top Projects in Welwyn Garden City

Customer Reviews

Overall rating:


Welwyn Garden City House extensions installers are rated 4.3 out of 5 based on 7 reviews of 85 pros.
The LeadsDoWork rating and review is an overall rating based on verified reviews and feedback from the customers with House extensions projects that have been connected with House extensions pros to help them. All House extensions contractors All Welwyn Garden City House extensions contractors

Are you a builder in Welwyn Garden City?

We can help you get more house extensions work with our qualified job leads and boost your business.

Join today