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House Extension in city

House extension features a variety of advantages which makes it easy to see why the extension could be a wonderful uptick in the prospective cost of your home in terms of sales. So if you're wanting to construct a brand-new house extension however still not convinced about the job, we're right here to assist you. Being totally aware any type of residence building job is normally a hefty investment, there's a big requirement to be set on your decision prior to setting up the beginning of any kind of job. So are house extensions worth it? Below are some of the leading benefits used by house extensions to help you decide if it's one of the most ideal route for you.

 

What's Involved in Adding an Extension?

The steps will certainly vary depending on the extent of your extension, yet you can expect some, if not all, of the listed below to be included when adding an expansion to your home:

 

  1. Getting Building Regulations or Planning Permission (if needed as the extension is larger than permitted development).
  2. Checking your leasehold agreement (if relevant) to see to it you can do what you intend to do.
  3. Enlisting an architect  to draw the plans, considering your planned use (kitchen, 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 prepared work ahead of it beginning.
  6. Getting auto parking allows if required for your contractors to guarantee they have very easy accessibility to your home.
  7. Making sure all planned work falls within permitted allowables.
  8. Clearing up the space and also excavating if necessary, including the elimination of trees.
  9. Structure job can begin.

 

What is the price of a house extension in city?

If you're considering including a two storey house extension, then setting a budget for this task would certainly be a terrific method to start. Similar to a back extension, a 2 floor extension usually leaves the remainder of the structure requiring some work as well as, due to its dimension, this may suggest the re-development of the entire house - which is why they can be extremely costly. Several of the other influencing factors that can have large impact on a 2 floor house extension cost consists of: your place, the size of the construct, complexity of the design (anything past the conventional develop will normally require even more expertise and also time), the glazing to be included (the much more the glass utilized in the project, the a lot more the material expense), along with the team made use of.

Average House extensions cost in County Durham

The regular cost of House extensions are £50,000 in County Durham. 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 2025

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 County Durham, as reported by local LeadsDoWork members.

House extensions installation cost in County Durham 2025

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

House extensions searches in June 2025

House extensions Projects in County Durham in May 2025

7,941

Requests for quotations in County Durham in May 2025

40

Requests for House extensions quotations in County Durham in May 2025. -20% change from April 2025.

194

Requests for House extensions quotations in Northern Ireland in May 2025. -22% change from April 2025.

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

House extensions searches in cities and towns near County Durham May 2025

10

Requests for quotations in Darlington in May 2025

10

Requests for quotations in Durham in May 2025

4

Requests for quotations in Peterlee in May 2025

4

Requests for quotations in Bishop Auckland in May 2025

4

Requests for quotations in Seaham in May 2025

County Durham

The ceremonial county of Durham is situated in the northeast of England, boasting a population of 513,000. The greatest settlement is the town of Darlington, with the county town of Durham also housing a large percentage. The county is ranked 23rd for inhabitants in England and consequently features a quite low density of 600 individuals per square mile. The county features a high proportion of residents originating from England, with the Easington and Derwentside area having a 99% average. For your forthcoming house improvement project for your Durham household, review quotations from nearby and trustworthy professionals in the region.

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FAQs

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.

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 long do house extensions take?

If you’re about to start your house extension project and wondering how long it’ll take to complete, you’re not alone! This is one of the most common questions that’s asked by homeowners in the UK and across the globe. However, there’s no single precise answer for this as there are multiple factors that’ll affect the length of time it’ll take to complete your home extension. These factors include the size of the construction work as well as whether you’re planning to live in the house after completion or otherwise.

For a single extension, the length of time it’ll take to complete the home extension is normally up to 3 months. So let’s break this down:

As you would have expected, the first step to be taken is the preparation of the site. You start by digging out the footing and preparing the foundation which should take about 2 weeks. This is then followed by the damp course installation as well as the fitting of any drains needed around the extension which will also take a further 2 weeks.

The 5th week will be for the construction of the external walls as well as putting the blockwork in place for the provision of the cavity wall insulation. A further 2 weeks after this, will be dedicated to the installation of the roof structure and the internal walls.

It’s at this junction that you’ll call on your weather proof installer to fit in your uPVC windows and doors. Once done, the gas fitters and electricians will have to be on site to connect power to your new extension building. Subsequently, this will be followed by internal wall plastering as well as breaking through your main house. Once the plaster is dried, decorations completed and all the required furniture and units installed, the extension is ready for use.

Can an extension add value to my home?

Yes. Most extensions will add substantial value to your home, and you may find that the extension adds more value than it cost. However, it’s important to be sure that the home remains balanced. Extending your garage and leaving your property with no parking spaces, for example, may impact your ability to sell.

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