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House extension includes a wide variety of benefits that makes it very easy to see why the extension could be a great uptick in the possible rate of your residential property in regards to sales. So if you're seeking to construct a new house extension however still not persuaded regarding the job, we're below to aid you. Being fully aware any type of residence building and construction job is generally a hefty investment, there's a substantial requirement to be set on your decision prior to setting up the start of any work. So are house extensions worth it? Below are a few of the leading advantages offered by house extensions to aid you decide if it's one of the most suitable route for you.

 

What's Associated with Building an Extension?

The steps will certainly differ depending upon the range of your extension, but you can expect some, if not all, of the listed below to be included when including an extension to your house:

 

  1. Obtaining Building Regulations or Planning Permission (if needed as the extension is larger than permitted development).
  2. Checking your leasehold contract (if relevant) to make sure you can do what you wish to do.
  3. Enlisting 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. Calling your insurance company to allow them recognize of the intended work ahead of it beginning.
  6. Obtaining vehicle parking allows if needed for your professionals to ensure they have easy accessibility to your residential property.
  7. Making certain all prepared job drops within allowed allowables.
  8. Clearing the area as well as excavating if required, consisting of the elimination of trees.
  9. Building job can begin.

 

What is the price of a house extension in city?

If you're taking into consideration adding a 2 storey house extension, after that setting a budget for this project would be a great means to start. Similar to a rear extension, a two storey extension normally leaves the remainder of the structure requiring some job as well as, as a result of its size, this might suggest the re-development of the entire house - which is why they can be extremely pricey. Several of the various other affecting factors that can have big influence on a two floor house extension cost consists of: your location, the size of the develop, intricacy of the layout (anything beyond the common build will typically call for more competence and time), the glazing to be included (the much more the glass made use of in the project, the much more the product price), in addition to the group utilized.

Average House extensions cost in Henley-on-thames

The regular cost of House extensions are £44,167 in Henley-on-thames. Costs vary based upon the materials and the company picked. The upper price range can be as high as £62,667. The material costs are in most cases around£10,500.

Average price per House extensions job in 2025

Avg. price low

Avg. price low
£29,000

Avg. price

Avg. price
£44,167

Avg. price high

Avg. price high
£62,667

£63200

£47400

£31600

£15800

£0

Prices based on actual House extensions costs for Henley-on-thames, as reported by local LeadsDoWork members.

House extensions installation cost in Henley-on-thames 2025

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

House extensions searches in March 2025

House extensions Projects in Henley-on-thames in February 2025

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Requests for House extensions quotations in Henley-on-thames in February 2025. 0% change from January 2025.

110

Requests for House extensions quotations in Oxfordshire in February 2025. 10% change from January 2025.

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Henley-on-thames

Henley-on-Thames is a town and civil parish on the River Thames in the English county of Oxfordshire. It is set about 7 miles (11 kilometres) northeast of Reading and 7 miles west of Maidenhead. One of its limits has the tripoint of Oxfordshire, Berkshire and Buckinghamshire. It encompasses an area of around 2.15 square miles. In accordance with the 2011 Census, the town has a permanent population of around 11619 people. The first record of Henley is from 1179, when it is recorded that King Henry II 'had actually purchased land for the making of buildings'. King John bestowed the manor of Benson and the town and manor of Henley to Robert Harcourt in 1199. The existing Thursday market, it is believed, was approved by a charter of King John. A market was definitely in existence by 1269, despite the fact that the jurors of the assize of 1284 asserted to not know by what warrant the earl of Cornwall held a market and fair in the town of Henley. The existing Corpus Christi fair was approved by a charter of Henry VI. Henley is a world-renowned centre for rowing. Each summer, the annual Henley Royal Regatta is held on Henley Reach, which is a naturally straight region of the river just north of the town. It was extended synthetically. The event ended up being 'Royal' in 1851, when Prince Albert became patron of the regatta. The River and Rowing Museum, based in Mill Meadows, is the town's one museum. It was formed in 1998, and formally opened by Queen Elizabeth II. The museum, developed by the designer David Chipperfield, showcases info on the River Thames, the sport of rowing, and the town of Henley itself. For all your house renovations, make certain to identify dependable experts in Henley-on-Thames to make certain of quality.

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House extensions pros in Henley-on-thames

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.

Similar Customer Enquiries for House extensions in Henley-on-thames

22 Apr

House Extensions

Henley-on-Thames - RG9

Enquiry from: Alex P

Start Date: Immediate

homeowner house extension please call to appoint

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17 Mar

House Extensions

Henley-on-Thames - RG9

Enquiry from: Jamie C

Start Date: Immediate

Double storey extension and loft conversion with bathroom and kitchen Are you the property owner: Owner of the property Property Type: Terrace Looking For: Double storey extension Do you have plannin...

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16 Mar

House Extensions

Henley-on-Thames - RG9

Enquiry from: Ac V

Start Date: Immediate

Two storey extension plus conservatory at Wilson Road, henley on thames. Customer is currently in the process of looking for quotes to add a Double storey extension to their property. Are you the pro...

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19 Jan

House Extensions

Henley-on-Thames - RG9

Enquiry from: M

Start Date: Immediate

2 storey extension. 6.4m wide by 11.4m deep total 73 sq m. if I could get a price for the shell including plastering. comprises of utility, living room,2 bedrooms 1 bath and 1 ensuite. fitting of all ...

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20 Oct

House Extensions

Henley-on-Thames - RG9

Enquiry from: Dotan K

Start Date: Immediate

Double extension, remove of old garage Please Call to Appoint

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21 May

House Extensions

Henley-on-Thames - RG9

Enquiry from: Mika R

Start Date: Immediate

Home Owner We are extending our house with 1 1/2 storey and balcony. I have counted the new wall area is ~93m2, double skinned block work with ~6m2 facial brick work. Site has easy access. Footings ...

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06 May

House Extensions

Henley-on-Thames - RG9

Enquiry from: E Z

Start Date: 3+ months

I would to extend my house by adding a double extension from.garage to garden. Homeowner Will need assistance with planning permission Plans will need to be drawn up Please contact to appoint

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21 Mar

House Extensions

Henley-on-Thames - RG9

Enquiry from: Rob B

Start Date: Immediate

Rear single storey extension plus further wall/chimney removal between rooms Are you the property owner: Owner of the property Looking For: Single storey extension Do you have planning permission: ...

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07 May

House Extensions

Didcot - OX11

Enquiry from: Adrian J

Start Date: Immediate

Second storey SIPS side extention above kitchen. 6 x 2.5 m. For bedroom and bathroom.

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15 May

House Extensions

Didcot - OX11

Enquiry from: Adrian J

Start Date: Immediate

Extention above kitchen 6m x 2.5m with bedroom and bathroom.

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15 Nov

House Extensions

Reading - RG2

Enquiry from: Dwrey M

Start Date: Immediate

need to build single story extension which is 2.5metres in length and 3 m wide so multiplexing gives 7.5sqm of area are you the property owner: owner of the property property type: semi detached looki...

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10 Nov

House Extensions

Reading - RG30

Enquiry from: Simon C

Start Date: Immediate

Homeowner House extension Please call to appoint

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01 Mar

House Extensions

Reading - RG30

Enquiry from: Anita R

Start Date: Immediate

miss requested quotes for house extension from a builder around reading. they are considering a couple of projects at the moment.call anytime to arrange appointment to discuss. the information below i...

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17 Nov

House Extensions

Reading - RG4

Enquiry from: Cheryl R

Start Date: Immediate

Take down loft conversion and create new 1 at floor, same area as ground floor, with 3 bedrooms, all en- suite, and a pitched roof. I would like an estimate of costs, and if this can be done.

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13 Jul

House Extensions

Reading - RG30

Enquiry from: Derrick J

Start Date: Immediate

customer made an online enquiry for house extension and confirmed on sms and email they would like a call with a builder to discuss prices.please call to arrange an appointment to quote. are you the p...

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14 Jun

House Extensions

Reading - RG4

Enquiry from: Faten J

Start Date: Immediate

Add a second storey to a bungalow with total floor area of 67 square meters.

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29 May

House Extensions

Wallingford - OX10

Enquiry from: Neil H

Start Date: Immediate

Building on a concrete flat roofed single brick workshop attached to main house. Approx 4m x 4m. One window and doorway from main house landing. Flat roof when finished.

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20 Apr

House Extensions

Thame - OX9

Enquiry from: Marnix T

Start Date: 1 to 3 months

bungalow needs new floor, added floor to convert into a dutch style barn with curved, corrugated roof. black cladding, good insulation. the curve span is 8.5 meters, length is 11.5 meters. quote for t...

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15 Mar

House Extensions

Reading - RG2

Enquiry from: Aditya S

Start Date: Immediate

i have the architectural drawings for the extensions and need the building regulations to be submitted to council. are you the property owner: owner of the property looking for: single storey extensio...

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08 Mar

House Extensions

Oxford - OX44

Enquiry from: Bethany L

Start Date: Immediate

Hello, I'm hoping to get a quote for a single story extension to the side and rear of a two bedroom house. The estimated size is 15m2 but I can provide current and proposed floor plans. The extensi...

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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.

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.

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.

Do I need my neighbours’ permission for an extension?

Well the reality is, sometimes, neighbours just don’t get along. With several individuals living in close proximity, it’s little surprise they tend to get on one another’s nerves from time to time. However, there’s a difference between having a tiff and being able to transform your house the way you want without having to obtain your neighbour’s approval.

The short and simple answer to this question is, not necessarily. However, you must first educate yourself by thinking about your extension and how it affects the houses around you. We’d strongly recommend you talk proposals through with your neighbour so as to avoid possible conflicts later. There are a number of reasons why your neighbour can protest to your new home extension plans. Let’s take a look!

 

  • In the event whereby your new extension is blocking their view or providing an unwanted shade on their property. Here, they have a legitimate reason to protest as no one would want their once sunny garden suddenly covered or plummet into shade.
  • In the event where it leads to a loss of privacy. For instance, if your new extension possesses a window which overlooks the neighbour’s property in any way. This is likely to be taken as an invasion of privacy and that has a little to no chance of being a welcomed idea.
  • If it’s a major project and going to take a lot of weeks before completion. The noise generated, especially when your neighbours are enjoying your summer holidays or weekends, can make their gardens not as relaxing as it used to be.
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