House Extension in city

Find House Extension Prices in city

Home > Extensions & Conversions Projects > House extensions > St Helens

House Extension in city

House extension includes a large range of advantages that makes it very easy to see why the extension could be a fantastic uptick in the possible price of your property in terms of sales. So if you're seeking to develop a new residence extension but still not encouraged concerning the task, we're below to help you. Being fully aware any kind of home building and construction job is typically a hefty financial investment, there's a massive demand to be set on your decision before setting up the beginning of any work. So are house extensions worth it? Below are several of the top advantages used by house extensions to aid you decide if it's one of the most appropriate path for you.

 

What's Involved in Adding an Extension?

The actions will certainly differ depending on the range of your extension, yet you can expect some, if not all, of the listed below to be entailed when including an expansion to your home:

 

  1. Acquiring Building Regulations or Planning Permission (if needed as the extension is larger than permitted development).
  2. Inspecting your leasehold contract (if applicable) to make certain you can do what you want to do.
  3. Employing an architect  to create the plans, considering your expected usage (kitchen, washroom, research study).
  4. Hiring a competent builder with experience of larger projects.
  5. Contacting your insurance policy company to let them recognize of the planned work ahead of it starting.
  6. Acquiring parking permits if required for your service providers to guarantee they have very easy access to your home.
  7. Making sure all prepared job falls within permitted allowables.
  8. Clearing up the space and excavating if necessary, consisting of the elimination of trees.
  9. Structure work can begin.

 

What is the price of a house extension in city?

If you're taking into consideration adding a two storey house extension, after that setting a allocate this job would certainly be a great method to get going. Comparable to a rear extension, a two storey extension generally leaves the rest of the building needing some work and, because of its dimension, this might imply the re-development of the whole house - which is why they can be really costly. Some of the various other influencing aspects that can have big impact on a 2 floor house extension expense consists of: your area, the size of the develop, intricacy of the layout (anything beyond the typical construct will generally call for more expertise and also time), the glazing to be integrated (the more the glass used in the project, the more the material price), along with the group used.

Average House extensions cost in St Helens

The regular cost of House extensions are £50,000 in St Helens. 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 St Helens, as reported by local LeadsDoWork members.

House extensions installation cost in St Helens 2026

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

House extensions searches in July 2026

House extensions Projects in St Helens in June 2026

4,104

Requests for quotations in St Helens in June 2026

18

Requests for House extensions quotations in St Helens in June 2026. 38% change from May 2026.

150

Requests for House extensions quotations in Merseyside in June 2026. 36% change from May 2026.

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

House extensions searches in cities and towns near St Helens June 2026

38

Requests for quotations in Warrington in June 2026

18

Requests for quotations in St Helens in June 2026

10

Requests for quotations in Knutsford in June 2026

10

Requests for quotations in Runcorn in June 2026

10

Requests for quotations in Altrincham in June 2026

St Helens

The Merseyside town of St Helens has a population more than 100,000, found in Lancashire to the northwest of England. The town developed rapidly during the Industrial Revolution and even today stays a commercial region. For your next house improvement, make sure to use accredited firms in St Helens.

Looking for House extensions in St Helens?

Get free quotes from local builders

Get free quotes

House extensions pros in St Helens

Magnus Technical Engineering LTD

6 review(s)
Based: in Appley bridge, WN6 9DB

Latest review

Vic F., SK23
5

House Extensions in High Peak

Excellent and professional approach.

Similar Customer Enquiries for House extensions in St Helens

12 Jan

House Extensions

St. Helens - WA9

Enquiry from: Tom W

Start Date: Immediate

Hi, I’m looking to get a double storey extension done at the side of my house, and wondering if we could get a quote please? Thankyou.

Post a similar request >

17 Oct

House Extensions

St. Helens - WA9

Enquiry from: Francis T

Start Date: Immediate

want to know the cost of extension kitchen

Post a similar request >

23 Feb

House Extensions

St. Helens - WA10

Enquiry from: David M

Start Date: Immediate

mr requested quotes for house extension from a builder around st. helens. they are considering a couple of projects at the moment.call anytime to arrange appointment to discuss. the information below ...

Post a similar request >

04 Jan

House Extensions

St. Helens - WA11

Enquiry from: Erwin T

Start Date: Immediate

customer has a extensions & conversions project they are looking to have done, specially they want quotes for house extension. they are unsure of options so would like to discuss with a builder.confir...

Post a similar request >

31 Jul

House Extensions

St. Helens - WA9

Enquiry from: Susana T

Start Date: Immediate

customer in the st. helens 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...

Post a similar request >

07 Feb

House Extensions

St. Helens - WA10

Enquiry from: Mark D

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...

Post a similar request >

04 Jul

House Extensions

St. Helens - WA11

Enquiry from: Sharon L

Start Date: Immediate

are you the property owner: owner of the property property type: detached other forms: house extension agreed to receive quotes for selected products: yes please call to appoint

Post a similar request >

26 May

House Extensions

St. Helens - WA10

Enquiry from: Alison K

Start Date: Immediate

are you the property owner: owner have you considered getting your windows replaced to match your conservatory: yes how many windows are you looking for: 5+ windows other forms: kitchen design & inst...

Post a similar request >

06 May

House Extensions

St. Helens - WA9

Enquiry from: Vincent E

Start Date: Immediate

erect any side return extension to provide a kitchen extension and a new shower room. additionally remove 1 internal wall dividing the hall and the sitting room . the house will be vacant during all ...

Post a similar request >

15 Jan

House Extensions

St. Helens - WA9

Enquiry from: Amy S

Start Date: Immediate

Double story extention 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 you have plans drawn u...

Post a similar request >

18 Jul

House Extensions

St. Helens - WA10

Enquiry from: David G

Start Date: 3+ months

Customer visited the myhouseextension.co.uk site and submitted an enquiry. Property type: Semi detached, Work description: A rear ground floor extension. Knock through two supporting walls and c...

Post a similar request >

26 Jun

House Extensions

St. Helens - WA9

Enquiry from: Bianca S

Start Date: Immediate

Customer visited the myhouseextension.co.uk site and submitted an enquiry. Property type: Terrace, Work description: Home improvement kitchen extension 3m height with 3m into garden, will bring exte...

Post a similar request >

28 Mar

House Extensions

St. Helens - WA10

Enquiry from: Richard C

Start Date: Less than one month

A 3m x 9m single storey side extension with sloping roof. The extension to create three areas: an enlarged kitchen / breakfast room with rear door exit, a utility room, and a shower and toilet. Custo...

Post a similar request >

17 Mar

House Extensions

St. Helens - WA9

Enquiry from: Johanna M

Start Date: 1 to 3 months

Are you the property owner: Owner of the property Property Type: Semi detached How many bedrooms does the property have: 3-4 Bedrooms Other Forms: 45, 77 Agreed to recieve quotes for selected product...

Post a similar request >

02 Feb

House Extensions

St. Helens - WA11

Enquiry from: Alan S

Start Date: Immediate

Kitchen extension & possible sun room, contact me via email as I do not answer the phone to unknown numbers for obvious reasons. Are you the property owner: Owner of the property Looking For: Single...

Post a similar request >

03 Jan

House Extensions

St. Helens - WA10

Enquiry from: Richard F

Start Date: Immediate

We have a garage at the side of the house. We'd like some ideas about how to use the space for a shower room, utility room, bedroom etc. We don't mind extending out to the back either.

Post a similar request >

02 Nov

House Extensions

St. Helens - WA10

Enquiry from: L

Start Date: Immediate

2 storey extension to side of semi. Drains will need to be re-directed or moved

Post a similar request >

13 Oct

House Extensions

St. Helens - WA9

Enquiry from: Stefan J

Start Date: 1 to 3 months

We live in a three bedroom semi detached house, but the third bedroom was converted into a bathroom which was previously downstairs. We have one child, a six-year-old boy, and another on the way so so...

Post a similar request >

07 Jun

House Extensions

St. Helens - WA10

Enquiry from: Salah A

Start Date: Immediate

Build one bedroom extension above the existing one. The plan has drawn & the planning permission approved.

Post a similar request >

06 Jun

House Extensions

St. Helens - WA11

Enquiry from: Dave O

Start Date: Immediate

Building quotes for a large double storey rear and side extension

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 St Helens

Get free, no-obligation local house extensions quotes from 4 verified builders working in St Helens.

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 Local Quotes it's a big part of my …

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

FAQs

Will my extension be expensive?

It depends on the size and type of extension. Small porches or flat roof extensions are very reasonably priced. More substantial two storey extensions can be expensive. In general, the price is roughly proportional to the amount of space you add to your home.

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.

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.
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.

House extensions

Other Top Projects in St Helens

Customer Reviews

Overall rating:


St Helens House extensions installers are rated 4.8 out of 5 based on 4 reviews of 28 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 St Helens House extensions contractors

Are you a builder in St Helens?

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

Join today