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House Extension in city

House extension includes a wide variety of benefits which makes it simple to see why the extension could be a excellent uptick in the prospective rate of your home in terms of sales. So if you're aiming to develop a new house extension but still not encouraged about the task, we're right here to assist you. Being fully mindful any residence construction job is generally a hefty financial investment, there's a big requirement to be set on your choice prior to arranging the commencement of any type of work. So are house extensions worth it? Below are a few of the top benefits provided by house extensions to assist you make a decision if it's one of the most suitable route for you.

 

What's Associated with Building an Extension?

The actions will differ depending on the scope of your extension, yet you can anticipate some, if not all, of the listed below to be included when including an expansion to your residence:

 

  1. Acquiring Building Regulations or Planning Permission (if called for as the extension is larger than permitted development).
  2. Examining your leasehold contract (if suitable) to see to it you can do what you want to do.
  3. Employing an architect  to prepare the plans, considering your expected use (kitchen, shower room, study).
  4. Hiring a competent builder with experience of larger projects.
  5. Contacting your insurance policy company to allow them know of the prepared job ahead of it starting.
  6. Acquiring parking allows if needed for your service providers to guarantee they have simple accessibility to your home.
  7. Ensuring all planned work drops within permitted allowables.
  8. Clearing the area as well as excavating if needed, including the elimination of trees.
  9. Building job can begin.

 

What is the price of a house extension in city?

If you're thinking about adding a 2 storey house extension, after that establishing a allocate this task would certainly be a great method to start. Similar to a rear extension, a two floor extension generally leaves the rest of the building needing some job as well as, because of its size, this may indicate the re-development of the whole house - which is why they can be really costly. Some of the other affecting variables that can have big influence on a 2 floor house extension price includes: your place, the dimension of the develop, intricacy of the design (anything past the typical build will normally require even more knowledge as well as time), the glazing to be integrated (the a lot more the glass used in the project, the a lot more the material price), as well as the group made use of.

Average House extensions cost in Londonderry

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

House extensions installation cost in Londonderry 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 Londonderry in May 2025

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Requests for quotations in Londonderry in May 2025

10

Requests for House extensions quotations in Londonderry in May 2025. 0% change from April 2025.

20

Requests for House extensions quotations in County Londonderry in May 2025. 0% change from April 2025.

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Londonderry

With a populace more than 237,000, Londonderry, also known simply as Derry, is definitely the 2nd largest city in Northern Ireland. Derry is positioned to the west of the River Foyle and in 2013 will be the 1st UK city to become honoured with the title of UK City of Culture. Keep your Londonderry home up-to-date and be sure to have more than one price from vetted professionals close to you.

Looking for House extensions in Londonderry?

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Similar Customer Enquiries for House extensions in Londonderry

25 Jul

House Extensions

Londonderry - BT47

Enquiry from: Lucinda S

Start Date: Immediate

wanting to extend kitchen to allow a small sun room are you the property owner: owner of the property property type: terrace looking for: single storey extension do you have planning permission: no do...

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04 Oct

House Extensions

Londonderry - BT48

Enquiry from: Carina D

Start Date: Less than one month

there is a dining room with entry currently from the sitting room. i want to have this closed off and knock through the wall from the kitchen into the dining room and move the kitchen down here. addit...

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21 Aug

House Extensions

Londonderry - BT47

Enquiry from: Kevin B

Start Date: Immediate

attached garage ... have drawing already done are you the property owner: owner of the property property type: detached looking for: single storey extension do you have planning permission: yes do you...

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29 Jul

House Extensions

Londonderry - BT48

Enquiry from: Peter C

Start Date: Less than one month

i would like ball park quotes for a single story ground floor extension. this is to incorporate a bedroom and en-suite bathroom. the area is approx 21.5 square meters. customer is currently in the ...

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16 Jul

House Extensions

Londonderry - BT48

Enquiry from: DENISE C

Start Date: 1 to 3 months

looking for a single story extension. planning permission has been submitted. copy of plans for quote are you the property owner: owner of the property looking for: single storey extension do you hav...

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30 Jun

House Extensions

Londonderry - BT48

Enquiry from: DENISE C

Start Date: Immediate

Sunroom added to side of kitchen 3mx4M

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07 Jun

House Extensions

Londonderry - BT47

Enquiry from: Mervyn M

Start Date: Immediate

Looking for a detached garage not massive but idle for the house

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08 May

House Extensions

Londonderry - BT47

Enquiry from: JOANNE P

Start Date: Less than one month

hi, looking to add sunroom/extension onto the back of our semi-detached house. looking to add it on to the french doors which are situated beside adjoining neighbour side. looking for one room to sit ...

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01 Mar

House Extensions

Londonderry - BT47

Enquiry from: Emma C

Start Date: Less than one month

A detached garage for my home. Are you the property owner: Owner of the property Looking For: Single storey extension Do you have planning permission: No Do you have plans drawn up: No Do you require ...

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18 Sep

House Extensions

Londonderry - BT48

Enquiry from: Fergal E

Start Date: Immediate

approx. 11m2 disabled bedroom and approx. 5m2 associated en-suite extension with lobby and door to outside - flat roof and temporary in nature. Can be disconnected and removed and reused elsewhere

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17 Jun

House Extensions

Londonderry - BT47

Enquiry from: Roy J

Start Date: Immediate

need a detached garage for one car

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11 Jan

House Extensions

Londonderry - BT47

Enquiry from: Shane D

Start Date: 1 to 3 months

I have a bungalow. I plan on extending out the entire rear of the property. This will be 16 metres wide and 4 metres out. So 64m2. This will make 2 bedrooms bigger. the bathroom bigger, Kitchen bigger...

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02 Nov

House Extensions

Londonderry - BT48

Enquiry from: Finbar O

Start Date: Immediate

Detached garage with electric and plumbed for washing machine/tumble drier Customer is currently in the process of looking for quotes to add a Single storey extension to their property. Are you the p...

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12 Sep

House Extensions

Londonderry - BT47

Enquiry from: Emmett H

Start Date: Immediate

A single story extension at the rear of the property. Approximately 10 feet by 16 feet.

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26 Sep

House Extensions

Londonderry - BT48

Enquiry from: Caroline M

Start Date: Immediate

Kitchen extension and other work Customer is currently in the process of looking for quotes to add a Single storey extension to their property. Are you the property owner: Owner of the property Prop...

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24 Mar

House Extensions

Londonderry - BT47

Enquiry from: Peter M

Start Date: Immediate

I’m looking to build a garage with the dimensions approximately 19ft wide and 30 foot long, with an attic space big enough for storage.

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23 Mar

House Extensions

Londonderry - BT47

Enquiry from: TANYA M

Start Date: 1 to 3 months

live in a Bungalow was looking to put a level for an upstairs...We have three bedrooms downstairs and hopefully have either a two or a possible three bedrooms upstairs with two walk-in wardrobes in tw...

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29 Nov

House Extensions

Londonderry - BT48

Enquiry from: Carl C

Start Date: 3+ months

full rear extension - possible garage

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13 Nov

House Extensions

Londonderry - BT47

Enquiry from: Claire W

Start Date: Immediate

2 bedrooms added onto end of house Are you the property owner: Owner of the property Property Type: Semi detached Looking For: Single storey extension Do you have planning permission: No Do you have p...

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15 Sep

House Extensions

Londonderry - BT47

Enquiry from: Tom C

Start Date: 1 to 3 months

Extend Kitchen and bathroom and perhaps Loft conversion Are you the property owner: Owner of the property Property Type: Detached Do you have planning permission: No Would you require assistance to ga...

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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.

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.

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 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.

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