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House Extension in city

House extension includes a large range of advantages which makes it very easy to see why the extension could be a wonderful uptick in the prospective cost of your residential property in regards to sales. So if you're looking to construct a new house extension yet still not persuaded concerning the job, we're right here to help you. Being fully conscious any kind of residence building job is normally a heavy financial investment, there's a big need to be set on your decision before arranging the start of any kind of work. So are house extensions worth it? Below are a few of the leading benefits used by house extensions to aid you decide if it's the most appropriate path for you.

 

What's Involved in Including an Extension?

The steps will certainly differ relying on the scope of your extension, however you can expect some, if not all, of the below to be involved when including an extension to your residence:

 

  1. Getting Building Regulations or Planning Permission (if required as the extension is larger than permitted development).
  2. Checking your leasehold arrangement (if relevant) to see to it you can do what you wish to do.
  3. Hiring an architect  to create the plans, considering your planned use ( kitchen area, shower room, office).
  4. Hiring a competent builder with experience of larger projects.
  5. Contacting your insurance provider to let them understand of the intended work ahead of it beginning.
  6. Acquiring car park allows if required for your contractors to guarantee they have very easy accessibility to your home.
  7. Seeing to it all prepared job drops within allowed allowables.
  8. Cleaning the area and 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 taking into consideration including a two floor house extension, after that setting a allocate this project would certainly be a excellent method to begin. Similar to a back extension, a two floor extension usually leaves the remainder of the structure needing some job and also, because of its dimension, this may suggest the re-development of the entire house - which is why they can be very costly. Some of the various other influencing aspects that can have huge effect on a 2 storey house extension expense includes: your area, the dimension of the build, complexity of the style (anything beyond the common develop will normally need even more proficiency as well as time), the glazing to be integrated (the more the glass utilized in the task, the extra the product expense), along with the team utilized.

Average House extensions cost in Dartford

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

House extensions installation cost in Dartford 2025

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

House extensions searches in February 2025

House extensions Projects in Dartford in January 2025

1,513

Requests for quotations in Dartford in January 2025

10

Requests for House extensions quotations in Dartford in January 2025. 0% change from December 2024.

120

Requests for House extensions quotations in Kent in January 2025. 9% change from December 2024.

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

House extensions searches in cities and towns near Dartford January 2025

17

Requests for quotations in Erith in January 2025

10

Requests for quotations in Welling in January 2025

10

Requests for quotations in Gravesend in January 2025

10

Requests for quotations in Dartford in January 2025

10

Requests for quotations in Sidcup in January 2025

Dartford

Dartford is a big town in Kent and most well known for being the gateway to London from the southeast, with both the Dartford bridge and Dartford Crossing connecting to the M25. The town on the edge of the capital city boasts a populace of 85,911 with just 2.2% out of work; under the national average. For your personal household developments in the Dartford area, you'll want to make use of reputable professionals in the town.

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House extensions pros in Dartford

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.

Options Home Improvements LTD

1 review(s)
Based: in Kent, ME8 0DB

Here at Options Home Improvements we specialize is the bespoke design & installation of PVCu & Aluminium, windows and doors, orangeries & conservatories in Gillingham, Kent & South East area. Options Home Improvements was started due to the seemi...

Latest review

Lisa V., ME1
5

House Extensions in Rochester

I haven't had the extension built yet but am planning to use them

Nicholas James Construction

7 review(s)
Based: in Bromley, BR1 3AX

From past fifteen years we have been established as the finest building and construction service provider to clients in Bromley and its surrounding areas.

Latest review

Jagdish K., HA3
5

House Extensions in Harrow

Absolutely pleasant appointment. Very patient and polite, listened carefully to detail and more of my background and his...

Similar Customer Enquiries for House extensions in Dartford

12 Apr

House Extensions

Dartford - DA2

Enquiry from: Vijay K

Start Date: Immediate

property owner house extension please call to appoint

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17 Mar

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Dartford - DA1

Enquiry from: Bridget H

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stairs leading to loft split room in two. needs reconfiguring to make better use of current space.

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12 May

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Swanscombe - DA10

Enquiry from: Keerty G

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are you the property owner: relative of owner have you considered getting your windows replaced to match a new conservatory: no other forms: house extension agreed to receive quotes for selected prod...

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09 Jan

House Extensions

Dartford - DA2

Enquiry from: Abin B

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Submit your free quote for rated tradespeople

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28 Dec

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Dartford - DA1

Enquiry from: Anthony D

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We currently have a porch which is bottom half brick top half wood with a wooden door. We want to either change just the top half to UPVC and a UPVC door or change the whole porch to be fully UPVC. Ar...

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08 May

House Extensions

Dartford - DA2

Enquiry from: Louise C

Start Date: Immediate

We are looking to extend our current potton home. We also have a double two floor garage which we wish to convert and possibly link to the house. We have not found an architect as yet and would like t...

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03 Mar

House Extensions

Dartford - DA1

Enquiry from: Nick G

Start Date: Less than one month

2 Storey side extension Customer is currently in the process of looking for quotes to add a Double storey extension to their property. Are you the property owner: Owner of the property Property Type:...

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07 Feb

House Extensions

Dartford - DA1

Enquiry from: Nick G

Start Date: Less than one month

2 Storey side extension Customer is currently in the process of looking for quotes to add a Double storey extension to their property. Are you the property owner: Owner of the property Property Type:...

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02 Jan

House Extensions

Dartford - DA1

Enquiry from: Mr S

Start Date: 1 to 3 months

I need a single story extension on top of an existing extension. Dims are: 2m wide x 8M long. A flat roof finish. 2 x windows. 2 x radiators. there will be a knock through from the existing h...

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08 Aug

House Extensions

Dartford - DA4

Enquiry from: Paul R

Start Date: Immediate

Raise roof ridge 2m to convert loft rooms into full height built mainly off external walls. Full construction drawing available Are you the property owner: Owner of the property Looking For: Single s...

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06 Jun

House Extensions

Dartford - DA1

Enquiry from: Jan K

Start Date: Immediate

Homeowner Please contact to appoint Property Type: Other Customer is currently in the process of looking for quotes to add a Double storey extension to their property. Are you the property owner: Re...

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06 May

House Extensions

Dartford - DA1

Enquiry from: Melissa B

Start Date: Immediate

Hi I would like a quote for a rest kitchen extension or a single storey extension

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22 Apr

House Extensions

Dartford - DA2

Enquiry from: T C H

Start Date: Less than one month

Property Type: Other Have you got a rough idea of the design you would like: Some Ideas How many bedrooms are you looking to have: 5+ Bedrooms How many storeys are you looking for the property to hav...

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24 Mar

House Extensions

Dartford - DA2

Enquiry from: Steve D

Start Date: 1 to 3 months

Quote to build single storey extension, approximately 5m ((width) x 3m (depth) with 4m bifold doors to rear (supplied by me). Walls to be rendered so no face brickwork. Flat roof with 3m x 2m lantern ...

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17 Jan

House Extensions

Dartford - DA1

Enquiry from: Ray H

Start Date: Immediate

Second floor bedroom extension over original kitchen. The house is a chalet bungalow with existing extension. This will extend the existing extension. Floor space approx 10m Square

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08 Jan

House Extensions

Dartford - DA1

Enquiry from: Ray H

Start Date: Immediate

Second floor bedroom extension over original kitchen. The house is a chalet bungalow with existing extension. This will extend the existing extension. Floor space approx 10m Square

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30 Dec

House Extensions

Dartford - DA1

Enquiry from: Russell M

Start Date: 1 to 3 months

Customer visited the myhouseextension.co.uk site and submitted an enquiry. Property type: Semi detached, Work description: Second storey extension on top of existing ground floor extension. Approxim...

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30 Dec

House Extensions

Dartford - DA1

Enquiry from: Alex W

Start Date: Less than one month

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

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19 Nov

House Extensions

Dartford - DA2

Enquiry from: Andrew P

Start Date: Immediate

Customer visited the myhouseextension.co.uk site and submitted an enquiry. Property type: Semi detached, Work description: Two storey side extension, roughly 2.5m x 7m, Do you have planning permiss...

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28 Aug

House Extensions

Dartford - DA1

Enquiry from: Nicki S

Start Date: Immediate

Home Owner Call to Appoint

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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.

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 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.

are house extensions worth it?

Often referred to by many as the holy grail of home improvements, house extension comes with a wide range of benefits which makes it easy to see why the extension could be a great uptick in the potential price of your property in terms of sales. So if you’re looking to build a new home extension but still not convinced about the project, we’re here to help you. Being fully aware any home construction work is usually a heavy investment, there’s a huge need to be set on your decision before scheduling the commencement of any work. So are house extensions worth it? Below are some of the top benefits offered by house extensions to help you decide if it’s the most suitable route for you.

• Add To Your Home’s Value

Building an home extension is a great way to add value to your home before selling. Increasing the living space of your home is an incredible appeal to many buyers which significantly increases your property’s total value. However, you must ensure that the extension is impressively designed using top quality materials in order to generate more value.

• Good Alternative To House Moving

The most common reason for moving is usually due to a lack of sufficient space, but with house prices steadily on the increase a cost effective alternative is highly sought after. This alternative is house extension which creates more space for the household to spread out and have more privacy.

• You May Not Require A Planning Permission

You can extend your house and still not need to apply for a planning permission. To achieve this, simply comply with the laid down rules set under the permitted development rights.

• Extra Living Space

If you fill you’re starting to outgrow your existing structure and do not buy into the idea of moving, then your best bet might just be to extend your home.

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