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House Extension in city

House extension features a wide range of advantages that makes it easy to see why the extension could be a terrific uptick in the prospective cost of your property in terms of sales. So if you're wanting to construct a new residence extension but still not convinced about the task, we're right here to assist you. Being totally aware any type of house building and construction job is typically a heavy investment, there's a significant requirement to be set on your choice before arranging the beginning of any job. So are house extensions worth it? Below are several of the leading advantages provided by house extensions to assist you choose if it's the most appropriate path for you.

 

What's Involved in Adding an Extension?

The steps will certainly vary depending on the range of your extension, yet you can anticipate some, otherwise all, of the listed below to be involved when adding an extension to your residence:

 

  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 make sure you can do what you want to do.
  3. Hiring an architect  to prepare the plans, considering your expected use ( cooking area, restroom, research study).
  4. Hiring a competent builder with experience of larger projects.
  5. Contacting your insurance policy carrier to let them understand of the prepared job ahead of it starting.
  6. Acquiring auto parking permits if needed for your service providers to guarantee they have very easy accessibility to your residential building.
  7. Making certain all intended job drops within permitted allowables.
  8. Cleaning the space and also excavating if needed, consisting of the elimination of trees.
  9. Structure job can begin.

 

What is the cost of a house extension in city?

If you're taking into consideration adding a two storey house extension, after that establishing a allocate this task would be a wonderful method to start. Comparable to a back extension, a two storey extension usually leaves the remainder of the building requiring some work and, because of its dimension, this might imply the re-development of the entire house - which is why they can be extremely pricey. Several of the various other influencing elements that can have large influence on a 2 storey house extension expense consists of: your place, the size of the construct, intricacy of the layout (anything past the standard build will normally need more expertise as well as time), the glazing to be integrated (the extra the glass utilized in the job, the extra the product price), in addition to the team used.

Average House extensions cost in Ballymena

The regular cost of House extensions are £50,000 in Ballymena. 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 2026

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 Ballymena, as reported by local LeadsDoWork members.

House extensions installation cost in Ballymena 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 Ballymena in August 2026

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5

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

80

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

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Ballymena

Ballymena is a significant town in County Antrim, Ireland plus the seat of Ballymena Borough Council. Ballymena had a population of 28,717 individuals within the 2001 Census.

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Similar Customer Enquiries for House extensions in Ballymena

02 Sep

House Extensions

Ballymena - BT42

Enquiry from: Mark T

Start Date: Immediate

6’ high wall running 13’ long with gate in the middle. preferably from matching brick or blocks and rendered. running between house and garage. are you the property owner: owner of the property pr...

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08 Mar

House Extensions

Ballymena - BT43

Enquiry from: Angela P

Start Date: Less than one month

price for finishing an extension are you the property owner: owner of the property property type: semi detached looking for: single storey extension do you have planning permission: yes do you have pl...

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22 Dec

House Extensions

Ballymena - BT43

Enquiry from: Nigel N

Start Date: Immediate

I am currently in the process of purchasing a new house which has no garage. I would like to know how much a single and double detached garage would be to build approximately. Nothing fancy, just a ...

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17 Oct

House Extensions

Ballymena - BT44

Enquiry from: Courtney A

Start Date: Less than one month

at rear, 2-3 extensions appox 1. 25/30x25/30 ft wd 2. 10x12 ft wd 3 6x9 ft dw at front, two entrance porches appox 4x8 ft dw are you the property owner: owner of the property looking for: single st...

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09 Apr

House Extensions

Ballymena - BT43

Enquiry from: Caolan D

Start Date: Immediate

looking at two storey extension at side of property. if you look up address on google maps, i believe that a 4m x width of house would be appropriate. i would like to find a quotation for the project ...

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13 Jan

House Extensions

Ballymena - BT43

Enquiry from: Ian R

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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27 May

House Extensions

Ballymena - BT42

Enquiry from: Stephen C

Start Date: Immediate

I'm looking a side garage built onto the side on my house for selling as i want to maximise the price Customer is currently in the process of looking for quotes to add a Single storey extension to th...

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06 May

House Extensions

Ballymena - BT42

Enquiry from: Richard M

Start Date: Immediate

2 story extension. Current house is “L” shaped want to square it off two give us a extra bedroom upstairs and a playroom downstairs. Customer is currently in the process of looking for quotes to ...

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17 Sep

House Extensions

Ballymena - BT42

Enquiry from: Deborah C

Start Date: Immediate

Submit your free quote for rated tradespeople

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12 Apr

House Extensions

Ballymena - BT42

Enquiry from: Andrewn B

Start Date: Immediate

single story, flat roof, wood clad extension. 10m wide along the rear of the property, 3m wide out from the house and 4m high. Glazing double doors or bifolds unsure at present

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29 Mar

House Extensions

Ballymena - BT44

Enquiry from: Joanne A

Start Date: Immediate

Stable construction inside a barn for 2 horses

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18 Feb

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Ballymena - BT44

Enquiry from: Elaine B

Start Date: Immediate

A small extension in kitchen and a couple of walls knock down. An attic conversion. Stairs moved to opposite side. Time scale: 3-6 months

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29 Jan

House Extensions

Ballymena - BT42

Enquiry from: Bogdan T

Start Date: 1 to 3 months

homeowner Semi detached, back kitchen and bathroom extension 1-3 months please contact to appoint

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12 Jan

House Extensions

Ballymena - BT44

Enquiry from: Mary-Ellen G

Start Date: 3+ months

2 x 12x12 stables basic spec at the house Homeowner Will need assistance with planning permission Plans need to be drawn up Please contact to appoint

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08 Jan

House Extensions

Ballymena - BT43

Enquiry from: Caroline C

Start Date: 3+ months

Extra room built on top of garage on semi detached house Homeowner Will need assistance with planning permission Plans to be drawn up Please contact to appoint

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FAQs

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.

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.

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.

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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