House Extension in city

Find House Extension Prices in city

Home > Extensions & Conversions Projects > House extensions > Northwood

House Extension in city

House extension includes a wide variety of benefits that makes it simple to see why the extension could be a excellent uptick in the possible rate of your home in terms of sales. So if you're seeking to construct a brand-new residence extension however still not convinced about the job, we're here to aid you. Being completely mindful any kind of home building job is normally a heavy investment, there's a big requirement to be set on your decision before scheduling the start of any work. So are house extensions worth it? Below are several of the top benefits supplied by house extensions to assist you determine if it's the most suitable route for you.

 

What's Associated with Adding an Extension?

The steps will certainly vary depending on the extent of your extension, however you can expect some, otherwise all, of the listed below to be entailed when including an extension to your residence:

 

  1. Obtaining Building Regulations or Planning Permission (if needed as the extension is larger than permitted development).
  2. Inspecting your leasehold contract (if suitable) to ensure you can do what you intend to do.
  3. Enlisting an architect  to draw the plans, considering your expected usage ( cooking area, shower room, study).
  4. Hiring a competent builder with experience of larger projects.
  5. Contacting your insurance carrier to allow them know of the planned job ahead of it starting.
  6. Acquiring vehicle parking allows if needed for your service providers to ensure they have simple accessibility to your residential building.
  7. Making sure all prepared work drops within allowed allowables.
  8. Clearing up the space and excavating if needed, consisting of the removal of trees.
  9. Structure work can start.

 

What is the price of a house extension in city?

If you're thinking about including a 2 floor house extension, after that setting a budget for this project would certainly be a terrific method to begin. Comparable to a back extension, a two floor extension typically leaves the remainder of the building needing some job and also, because of its dimension, this might indicate the re-development of the whole house - which is why they can be extremely costly. A few of the other affecting factors that can have big influence on a two storey house extension price consists of: your place, the dimension of the construct, complexity of the style (anything past the standard construct will usually require more competence as well as time), the glazing to be integrated (the a lot more the glass used in the job, the much more the material cost), as well as the group utilized.

Average House extensions cost in Northwood

The regular cost of House extensions are £51,667 in Northwood. Costs vary based upon the materials and the company picked. The upper price range can be as high as £73,000. The material costs are in most cases around£10,500.

Average price per House extensions job in 2026

Avg. price low

Avg. price low
£32,000

Avg. price

Avg. price
£51,667

Avg. price high

Avg. price high
£73,000

£73500

£55125

£36750

£18375

£0

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

House extensions installation cost in Northwood 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 Northwood in August 2026

365

Requests for quotations in Northwood in August 2026

2

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

50

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

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

House extensions searches in cities and towns near Northwood August 2026

42

Requests for quotations in Harrow in August 2026

20

Requests for quotations in Wembley in August 2026

9

Requests for quotations in Stanmore in August 2026

9

Requests for quotations in Edgware in August 2026

5

Requests for quotations in Ruislip in August 2026

Northwood

Northwood is an elevated domestic settlement in the London Borough of Hillingdon adjacent Ruislip Woods National Nature Reserve and which shares a northern border with Hertfordshire. In accordance with records compiled by the Office for National Statistics in 2008, the town has a permanent population of around 11068. A triangular region of Northwood featuring the old High Street, Chester Road and Hallowell Road is a place of Local Architectural Special Interest, which is a restriction to protect the elaborate Victorian homes made from high quality brickwork. Dotted all around the area are 22 noted buildings for their architecture. Northwood presents many social and leisure opportunities for its inhabitants. The town is the home of a large range of independent and commercial chain companies in which locals can go shopping, consume. In 2012, a brand-new community centre on the town's high street, replacing an older building, was formally opened by the local MP Nick Hurd in September 2012. The new building was named the Kate Fassnidge Community Centre after the Uxbridge landowner who donated some of her land to the borough, and replaced a run-down dining club that had initially been a Ritz cinema. Each May, among the largest Scout Jumble sales in the country is held by 1st Northwood on the land next to their headquarters, the Hogs Back. The Northwood Hills public house (formerly called the Northwood Hills Hotel) opposite the tube station is accredited as where Sir Elton John first performed professionally. A photo of the club appears on one of his album covers. Northwood is additionally known as the place used for filming the Goods' and Leadbetters' houses and surrounding streets in the BBC TV situation comedy series 'The Good Life'. For all of your home improvements, make certain to identify reputable contractors in Northwood to make certain of quality.

Looking for House extensions in Northwood?

Get free quotes from local builders

Get free quotes

House extensions pros in Northwood

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.

Tectra Partnership Ltd

1 review(s)
Based: in Slough, SL3 0JE

Latest review

Deepak S., KT10
5

House Extensions in Esher

excellent communication

JPA Building Construction LTD

1 review(s)
Based: in Twickenham , TW1 1AG

Latest review

Rosa S., SE20
5

House Extensions in London

Very nice and helpful unfortunately I am looking for a builder who lives nearby my property

Similar Customer Enquiries for House extensions in Northwood

13 Aug

House Extensions

Northwood - HA6

Enquiry from: Mughal M

Start Date: Immediate

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

Post a similar request >

01 Jun

House Extensions

Northwood - HA6

Enquiry from: Rebecca C

Start Date: Immediate

*homeowner house extension please call to appoint

Post a similar request >

08 May

House Extensions

Northwood - HA6

Enquiry from: Soumik J

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 >

19 Oct

House Extensions

Northwood - HA6

Enquiry from: Sukdeep R

Start Date: Immediate

would like a new porch at the front of the property. there is currently no porch, the neighbours all have one. open to design ideas are you the property owner: owner of the property do you have plann...

Post a similar request >

01 Mar

House Extensions

Northwood - HA6

Enquiry from: Dr C

Start Date: 1 to 3 months

Are you the property owner: Owner Have you considered getting your windows replaced to match a new conservatory: No Other Forms: 17, 45 Agreed to recieve quotes for selected products: Yes Please call...

Post a similar request >

29 Nov

House Extensions

Northwood - HA6

Enquiry from: Tinesh C

Start Date: 3+ months

Double storey L wrap extension

Post a similar request >

22 Sep

House Extensions

Northwood - HA6

Enquiry from: Davinder C

Start Date: 3+ months

Side extension.Raise roof of house to create room over garage .

Post a similar request >

29 Apr

House Extensions

Northwood - HA6

Enquiry from: Devlina G

Start Date: 3+ months

Kitchen extension with side return Homeowner Please contact to appoint

Post a similar request >

15 Jan

House Extensions

Northwood - HA6

Enquiry from: T

Start Date: Immediate

multiple storey side extension (ground & 1st floor) with tile roof wide 8.5 feet length 40 feet

Post a similar request >

23 Sep

House Extensions

Northwood - HA6

Enquiry from: EMANUELE B

Start Date: 3+ months

Customer visited the myhouseextension.co.uk site and submitted an enquiry. Property type: Terrace, Work description: single rear extension approx. 6 metre x 4 metre (space needed for 1 extra wc ...

Post a similar request >

12 Sep

House Extensions

Northwood - HA6

Enquiry from: Zaffer M

Start Date: Immediate

Home owner Rear and side double storey extension plus Refurbishment of the existing house Please call to appoint

Post a similar request >

15 Jun

House Extensions

Northwood - HA6

Enquiry from: Andre S

Start Date: 3+ months

Two story extension (ca. 10x3 m, 30 sqm/floor). Lower floor: one room with sliding dividing door. Very large side windows/glass walls and 2 large folding/sliding doors ( 5m each). Upper floor: two roo...

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 Northwood

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

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

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.

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.

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.

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.

House extensions

Other Top Projects in Northwood

Customer Reviews

Overall rating:


Northwood House extensions installers are rated 4.4 out of 5 based on 13 reviews of 93 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 Northwood House extensions contractors

Are you a builder in Northwood?

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

Join today