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House extension includes a large range of advantages that makes it simple to see why the extension could be a terrific uptick in the prospective cost of your home in terms of sales. So if you're wanting to build a brand-new home extension but still not encouraged concerning the job, we're right here to assist you. Being completely mindful any type of house building job is generally a heavy financial investment, there's a huge requirement to be set on your decision prior to arranging the commencement of any work. So are house extensions worth it? Below are some of the top advantages used by house extensions to assist you determine if it's the most suitable path for you.

 

What's Associated with Building an Extension?

The steps will vary depending upon the range of your extension, however you can expect some, otherwise all, of the listed below to be included when adding an extension to your home:

 

  1. Obtaining Building Regulations or Planning Permission (if needed as the extension is larger than permitted development).
  2. Examining your leasehold contract (if relevant) to see to it you can do what you intend to do.
  3. Enlisting an architect  to create the plans, considering your expected use (kitchen, restroom, study).
  4. Hiring a competent builder with experience of larger projects.
  5. Calling your insurance coverage company to let them understand of the prepared work ahead of it beginning.
  6. Getting car park permits if needed for your service providers to guarantee they have simple access to your residential building.
  7. Ensuring all planned job drops within allowed allowables.
  8. Clearing the space and excavating if needed, consisting of the elimination of trees.
  9. Building job can start.

 

What is the expense of a house extension in city?

If you're considering including a two floor house extension, after that establishing a budget for this project would certainly be a fantastic method to start. Comparable to a back extension, a two floor extension typically leaves the rest of the structure needing some job and also, due to its dimension, this may suggest the re-development of the whole house - which is why they can be really costly. Several of the various other affecting aspects that can have huge influence on a 2 floor house extension cost includes: your place, the dimension of the construct, complexity of the layout (anything past the typical develop will typically require even more know-how and time), the glazing to be integrated (the a lot more the glass utilized in the job, the more the product price), as well as the team made use of.

Average House extensions cost in Merthyr Tydfil

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

House extensions installation cost in Merthyr Tydfil 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 Merthyr Tydfil in August 2026

658

Requests for quotations in Merthyr Tydfil in August 2026

7

Requests for House extensions quotations in Merthyr Tydfil in August 2026. -22% change from July 2026.

20

Requests for House extensions quotations in Mid Glamorgan in August 2026. -33% change from July 2026.

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

House extensions searches in cities and towns near Merthyr Tydfil August 2026

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Requests for quotations in Cardiff in August 2026

10

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10

Requests for quotations in Pontypridd in August 2026

10

Requests for quotations in Bridgend in August 2026

7

Requests for quotations in Caerphilly in August 2026

Merthyr Tydfil

Merthyr Tydfil is the 15th greatest urban area in Wales with a populace of 30,000. It once was the greatest town in Wales but now has only a population density of 502 individuals kilometre squared. If you're trying to find home developments in Merthyr Tydfil, ensure to check quotes from vetted specialists and get the ideal price available.

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Similar Customer Enquiries for House extensions in Merthyr Tydfil

23 Apr

House Extensions

Merthyr Tydfil - CF48

Enquiry from: James H

Start Date: Immediate

Hi, we are looking at buying a 3 bed 2 storey house in merthyr. I was hoping you can give me some type of rough estimate to the cost of possible extensions. I appreciate this Varies on many things but...

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24 Sep

House Extensions

Merthyr Tydfil - CF47

Enquiry from: Dougald M

Start Date: Less than one month

Conversion of 3 x 5.6m attached garage into general purpose living space. Concrete floor needs levelling before adding wooden vinyl. As well as necessary insulation, etc. to replace garage door with U...

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18 Oct

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Merthyr Tydfil - CF47

Enquiry from: Malcolm J

Start Date: Immediate

single storey extention

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14 Sep

House Extensions

Merthyr Tydfil - CF47

Enquiry from: Stefan J

Start Date: Immediate

Add an additional bedroom above an existing single storey extension Are you the property owner: Owner of the property Property Type: Terrace Looking For: Double storey extension Do you have planning p...

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05 Feb

House Extensions

Merthyr Tydfil - CF47

Enquiry from: Abby C

Start Date: Immediate

Homeowner House extension Supplied and installed Please contact to appoint

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28 Jan

House Extensions

Merthyr Tydfil - CF48

Enquiry from: Jarod B

Start Date: Immediate

Are you the property owner: Owner of the property Property Type: Semi detached Looking For: Double storey extension Do you have planning permission: No Would you require assistance to gain this: Y...

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26 Jan

House Extensions

Merthyr Tydfil - CF47

Enquiry from: Simon P

Start Date: Immediate

Homeowner Double storey extension May need help with plans Supplied and fitted Call to appoint

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17 Jul

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Pontypridd - CF38

Enquiry from: Justin S

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House extension and new garage new drive

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15 Nov

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Tredegar - NP22

Enquiry from: Sephiwe B

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homeowner extension please call to appoint

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04 Oct

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Porth - CF39

Enquiry from: Beena K

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customer has a extensions & conversions project they are looking to have done, specially they want quotes for house extension. they are unsure of options so would like to discuss with a builder.confir...

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05 Dec

House Extensions

Aberdare - CF44

Enquiry from: Most F

Start Date: Immediate

customer in aberdare areas is looking to do a couple of projects at the moment, and would like quotes for house extension.confirmed interest via email at 05/12/2021 08:51.please call to arrange appoin...

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09 Mar

House Extensions

Tonypandy - CF40

Enquiry from: Lewis R

Start Date: 1 to 3 months

i am looking to build up on my existing single extension. it’s approx 3m wide by 5m deep. are you the property owner: owner of the property looking for: single storey extension do you have planning ...

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08 Mar

House Extensions

Treharris - CF46

Enquiry from: Mike C

Start Date: Immediate

A flat roof garage ,remove about 12 Asbestos sheets (al whole ) and replace with new Corrogated sheets. If you are not available Dean, is there anyone you can recommend plus one or two jobs required...

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02 Mar

House Extensions

Tredegar - NP22

Enquiry from: Charlene B

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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20 Feb

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Aberdare - CF44

Enquiry from: Paul G

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Vertical extension on top of existing kitchen extension

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10 Dec

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Tonypandy - CF40

Enquiry from: Kyle B

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Double timber frame extension on a semi detached property.

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06 Dec

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Aberdare - CF44

Enquiry from: Gaynor D

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are you the property owner: owner of the property property type: terrace agreed to receive upvc quotes: yes what level of service do you require: supply and fit other forms: kitchen design & installa...

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30 Oct

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Mountain Ash - CF45

Enquiry from: Cl C

Start Date: 1 to 3 months

are you the property owner: owner of the property how many bedrooms does the property have: 3-4 other forms: house extension agreed to receive quotes for selected products: yes please call to appoint

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15 Aug

House Extensions

Aberdare - CF44

Enquiry from: Irene T

Start Date: Immediate

32 Craig Y Darren, Cwmdare, Aberdare, *** I am interested in an extension to the side of my house to create a larger kitchen and garden room.

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26 Jun

House Extensions

Aberdare - CF44

Enquiry from: Tracy H

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are you the property owner: owner of the property other forms: house extension agreed to receive quotes for selected products: yes please call to appoint

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FAQs

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.

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.

when do you need planning permission for a house extension?

If you’re planning on adding a house extension to your property, you’d probably be worried about whether or not your proposed extension would require a planing permission. Well, it may be relieving to know that not every house extension project would require a formal consent, and in fact, several extensions are covered by the permitted development rights. Not only can this save you a considerable amount of time especially at the project’s planning phase, but it’ll also save you money on the application fee. In the UK, single storey extensions to the house’s rear can be 3 metres deep for both semi detached houses and terraces or 8 metres deep for detached homes.

So how do you know when you’d require a planning permission for your home extension? Well, if your extension plan fits these criteria explained below, then your project is most likely going to be allowable as a permitted development.

• Extensions, which includes previous additions, must not go beyond half of the original house’s total surrounding land area.

• The main elevation, or side elevation where it fronts the highway, must not be extended forward.

• For single storeys, the rear additions must not extend more than the original house’s rear by more than 3 metres in both semi attached homes and terraces (4 metres for detached houses).

• Extensions to the side must be a single storey with a height not exceeding 4 metres and not going beyond 50% of the original house’s width.

• Extensions hat within 2 metres of a boundary should have a eaves height not more than 3 metres.

• Multi storey addition must not extend beyond the original house’s rear wall by a maximum of 3 metres or 7 metres of the boundary opposite the rear wall.

• Permitted development rights do not apply in listed buildings or designated areas.

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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