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House extension comes with a vast array of advantages which makes it easy to see why the extension could be a excellent uptick in the prospective cost of your property in terms of sales. So if you're looking to develop a brand-new residence extension however still not convinced regarding the job, we're right here to aid you. Being totally conscious any home building work is generally a hefty investment, there's a huge demand to be set on your decision before arranging the commencement of any job. So are house extensions worth it? Below are several of the leading benefits offered by house extensions to assist you determine if it's one of the most ideal path for you.

 

What's Associated with Building an Extension?

The steps will vary depending upon the scope of your extension, however you can anticipate some, if not all, of the below to be involved when adding an extension to your home:

 

  1. Obtaining Building Regulations or Planning Permission (if required as the extension is larger than permitted development).
  2. Checking your leasehold contract (if appropriate) to ensure you can do what you want to do.
  3. Hiring an architect  to draw the plans, considering your expected use ( cooking area, washroom, office).
  4. Hiring a competent builder with experience of larger projects.
  5. Calling your insurance coverage service provider to allow them recognize of the planned work ahead of it beginning.
  6. Acquiring car park permits if required for your specialists to guarantee they have easy access to your building.
  7. Making certain all prepared work falls within allowed allowables.
  8. Cleaning the area and digging deep into if required, consisting of the removal of trees.
  9. Structure work can start.

 

What is the cost of a house extension in city?

If you're thinking about including a two floor house extension, then establishing a allocate this task would be a fantastic method to start. Similar to a back extension, a two storey extension normally leaves the remainder of the structure requiring some work and also, due to its dimension, this may indicate the re-development of the entire house - which is why they can be really pricey. A few of the other influencing aspects that can have huge impact on a 2 floor house extension cost consists of: your area, the size of the build, complexity of the layout (anything beyond the basic develop will usually need more proficiency and time), the glazing to be included (the much more the glass utilized in the task, the more the material expense), along with the group utilized.

Average House extensions cost in Barnehurst

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

House extensions installation cost in Barnehurst 2025

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

House extensions searches in January 2025

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Barnehurst

Barnehurst is a town and district in South East London within the London Borough of Bexley. It is north east of Bexleyheath, and is 13 miles east south-east of Charing Cross. It's separated from North Bexleyheath by the A220 Erith Road.

The town was established after the sale of land in 1881 to construct the Bexleyheath loop line between Lewisham and Dartford. Its name derives from the name of the railway station, which was named after Colonel Barne, who owned a nearby property and was vice-chairman of the railway company. Right now, the railway station runs trains between London Charing Cross, London Victoria or London Cannon Street, by means of Lewisham and Eltham to the west and Dartford railway station towards the east. There are 12 trains every hour in the course of the week; on Sundays, there are four trains each hour. The railway station was openedto stimulate the building of homes. The Barnehurst Estate was constructed in 1926 which housed a lot of people.

Along with the railway station, Barnehurst is served by 5 buses, 1 of which goes to the well-liked Bluewater Shopping Centre. There are limited shopping or leisure opportunities in the town, so individuals usually go to surrounding places utilising public transport links or the primary roads.

Barnehurst is residence towards the non-league football club Phoenix Sports FC, which plays at Phoenimx Sports Ground.

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House extensions pros in Barnehurst

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 Barnehurst

28 Jul

House Extensions

Bexleyheath - DA7

Enquiry from: Gretel D

Start Date: 1 to 3 months

relocation of a manhole as it is sitting in the extension and i would like it to be moved outside the extension. are you the property owner: owner of the property looking for: single storey extension ...

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26 Oct

House Extensions

Bexleyheath - DA7

Enquiry from: Yasmin B

Start Date: Immediate

hello! thank you in advance for your free service to help us with building outhouses and extensions in bexleyheath. we would like to build an outhouse/ guest cottage at the back of our garden. we'd l...

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21 Oct

House Extensions

Bexleyheath - DA7

Enquiry from: Yasmin B

Start Date: Immediate

hello! thank you in advance for your free service to help us with building outhouses and extensions in bexleyheath. we would like to build an outhouse/ guest cottage at the back of our garden. we'd l...

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10 Jul

House Extensions

Bexleyheath - DA7

Enquiry from: Piotr M

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...

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23 Dec

House Extensions

Bexleyheath - DA7

Enquiry from: Anupam M

Start Date: Immediate

Submit your free quote for rated tradespeople

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10 Oct

House Extensions

Bexleyheath - DA7

Enquiry from: Abiola A

Start Date: Immediate

6m by 5 m extension, bi- fold doors, roof lantern. fitted kitchen, Loft conversion/ extension to create 2 rooms and bath/toilet. Full refurb of existing structure Customer is currently in the process...

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03 Oct

House Extensions

Bexleyheath - DA7

Enquiry from: Abiola A

Start Date: Immediate

6m by 5 m extension, bi- fold doors, roof lantern. fitted kitchen, Loft conversion/ extension to create 2 rooms and bath/toilet. Full refurb of existing structure

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16 May

House Extensions

Bexleyheath - DA7

Enquiry from: Cengiz O

Start Date: Immediate

Are you the property owner: Owner of the property Property Type: Semi detached Do you have planning permission: Yes Looking For: Double storey extension Do you have plans drawn up: No Do you require P...

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30 May

House Extensions

Bexleyheath - DA7

Enquiry from: Natalie S

Start Date: Immediate

Level foundation and cement the base, breeze block building 4m x 7.5m, render outside and plaster inside, plasterboard partition, pitched roof with tiles, upvc doors and windows, electrics with spot l...

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09 Apr

House Extensions

Bexleyheath - DA7

Enquiry from: Rosanna A

Start Date: Immediate

I want to have kitchen extension but don't have drawings. I would prefer someone to come and give us idea of how we're going to do it in a no obligation quote.

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05 Apr

House Extensions

Bexleyheath - DA7

Enquiry from: Mrs D

Start Date: Immediate

2 storey rear extension, comprising kitchen extension and a new upstairs bedroom with two bathrooms to replace the existing one. There's also the requirement to reposition the drainage.

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01 Apr

House Extensions

Bexleyheath - DA7

Enquiry from: Laura O

Start Date: Immediate

We are looking to appoint a contractor that will be responsible for managing our extension and refurbishment project. It is expected that the contractor will be able to deliver within the agreed timet...

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31 Mar

House Extensions

Bexleyheath - DA7

Enquiry from: Dot N

Start Date: Immediate

2 storey back extension comprising kitchen, two bathrooms and repositioning drainage/sewer Customer is currently in the process of looking for quotes to add a Double storey extension to their propert...

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30 Mar

House Extensions

Bexleyheath - DA7

Enquiry from: Ismayil A

Start Date: Less than one month

Build 2 storey extension to side of 3 bedroom semi. Garage and two rooms behind on ground floor then single room above. Built to water tight shell. Then single storey extension across back on the hous...

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17 Oct

House Extensions

Bexleyheath - DA7

Enquiry from: S

Start Date: Immediate

Extension (12 meter square *) + renovation + new kitchen

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03 Jul

House Extensions

Bexleyheath - DA7

Enquiry from: K

Start Date: Immediate

Rear extension

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26 May

House Extensions

Bexleyheath - DA7

Enquiry from: R

Start Date: Immediate

rear 5 metres by 5 metres kitchen extension.

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29 Mar

House Extensions

Bexleyheath - DA7

Enquiry from: Jusline O

Start Date: Immediate

Extending the attached garage upstairs 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: No Do yo...

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13 Jan

House Extensions

Bexleyheath - DA7

Enquiry from: Tina K

Start Date: Immediate

Home owner Single extension to remove conservatory and change it for an extension Immediate Please call to appoint *

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15 Dec

House Extensions

Bexleyheath - DA7

Enquiry from: Daniel B

Start Date: Immediate

Double story side extention,. And continuing the 3 meter single story existing extension across the new extention at the rear of the house Are you the property owner: Owner of the property Property Ty...

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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.

how to finance a house extension?

Do you want to beautify and increase the value of your home? If yes, a refurb and house extension is definitely a great option to consider. Depending on your home extension project, the value that’ll be added to your home’s resale value varies. However, the cost of completing a house extension project can be huge, so you just might want to consider your financing options. Fortunately, there are various options through which your house extension project can be funded with each having its own pros and cons. Your specific circumstances will determine the one that’s going to work best for you, so let’s take a look at some of the best options to help you fund your project.

• Home Remortgaging

The process whereby a mortgage is transferred from one provider to the other is known as remortgaging. This is usually done to generate funds for a project by entering a more lengthy repayment term commitment when switching. If you want to raise your funds in a quick manner, this process works best.

• Savings

This is a good reason to cultivate a good saving habits. If you’ve been able to save up some mega bucks then you’d probably won’t have to borrow money to finance your house extension.

• Unsecured Loans

If you do not buy into the idea of borrowing more against your property, you may just be able to apply for an unsecured loan especially if you have a good credit record. A secured loan makes use of collaterals like a car or house to serve as a cover for the lender, meanwhile an unsecured loan is based mainly on the credit managing history of the borrower.

• Credit Card

There are some great benefits that comes with financing your small or medium scale extension project with your credit card. Not only does it offer some real lifeline if problems arise during the project, but you can also avoid paying excessive interest on the investment by ensuring your deal has a 0% introductory rate.

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.

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.

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