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House Extension in city

House extension comes with a variety of benefits which makes it very easy to see why the extension could be a wonderful uptick in the possible price of your residential property in terms of sales. So if you're wanting to develop a new house extension but still not convinced about the job, we're here to aid you. Being totally mindful any home building and construction work is usually a heavy financial investment, there's a huge demand to be set on your decision before scheduling the beginning of any job. So are house extensions worth it? Below are several of the top benefits supplied by house extensions to assist you choose if it's the most appropriate path for you.

 

What's Associated with Including an Extension?

The actions will certainly differ depending on the extent of your extension, yet you can anticipate some, otherwise all, of the listed below to be entailed when including an extension to your residence:

 

  1. Obtaining Building Regulations or Planning Permission (if required as the extension is larger than permitted development).
  2. Examining your leasehold contract (if relevant) to make sure you can do what you intend to do.
  3. Enlisting an architect  to draw up the plans, considering your planned use ( kitchen area, shower room, research study).
  4. Hiring a competent builder with experience of larger projects.
  5. Contacting your insurance coverage service provider to let them understand of the prepared job ahead of it starting.
  6. Obtaining parking allows if needed for your contractors to ensure they have very easy access to your house.
  7. Making certain all intended work drops within permitted allowables.
  8. Cleaning the space and excavating if needed, consisting of the removal of trees.
  9. Building job can start.

 

What is the cost of a house extension in city?

If you're considering including a 2 floor house extension, then establishing a budget for this task would certainly be a excellent method to get started. Comparable to a back extension, a 2 floor extension generally leaves the remainder of the structure requiring some job and also, because of its size, this might imply the re-development of the whole house - which is why they can be really costly. A few of the other affecting factors that can have large effect on a 2 storey house extension expense consists of: your area, the size of the develop, intricacy of the design (anything beyond the standard build will generally require even more expertise as well as time), the glazing to be integrated (the much more the glass used in the project, the much more the product expense), in addition to the group utilized.

Average House extensions cost in Hertford

The regular cost of House extensions are £51,875 in Hertford. Costs vary based upon the materials and the company picked. The upper price range can be as high as £72,000. The material costs are in most cases around£10,500.

Average price per House extensions job in 2025

Avg. price low

Avg. price low
£34,250

Avg. price

Avg. price
£51,875

Avg. price high

Avg. price high
£72,000

£72500

£54375

£36250

£18125

£0

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

House extensions installation cost in Hertford 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 Hertford in May 2025

738

Requests for quotations in Hertford in May 2025

10

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

130

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

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

House extensions searches in cities and towns near Hertford May 2025

20

Requests for quotations in Stevenage in May 2025

10

Requests for quotations in Sandy in May 2025

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Requests for quotations in Letchworth Garden City in May 2025

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Requests for quotations in Hertford in May 2025

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Requests for quotations in Hitchin in May 2025

Hertford

Hertford is the county town of Hertfordshire, England, and it's a civil parish within the East Hertfordshire district of the county. Hertfordshire is situated in the south of the United Kingdom, nearby other counties such as Essex and Cambridgeshire. Greater London is in addition directly to the south.

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House extensions pros in Hertford

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 Hertford

28 Sep

House Extensions

Hertford - SG14

Enquiry from: Stuart S

Start Date: Immediate

ground floor extension on rear. pitched roof. convert existing kitchen to utility and shower room. convert single attached garage to play room are you the property owner: owner of the property propert...

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14 Apr

House Extensions

Hertford - SG13

Enquiry from: Joanne E

Start Date: Immediate

Replace porch with plain pvc door and glass, brickwork already there. Are you the property owner: Owner of the property What material are you looking for: uPVC What material would you like the roof m...

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31 May

House Extensions

Hertford - SG13

Enquiry from: Teresa D

Start Date: Immediate

Homeowner Please contact to appoint 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 P...

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19 Oct

House Extensions

Hertford - SG13

Enquiry from: Pinki C

Start Date: 3+ months

Homeowner Please contact to appoint

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03 Sep

House Extensions

Hertford - SG13

Enquiry from: Mark H

Start Date: Immediate

single story rear exstension

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23 Nov

House Extensions

Hertford - SG14

Enquiry from: R W

Start Date: 3+ months

extension,interior re arrangement

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22 Nov

House Extensions

Hertford - SG14

Enquiry from: Mario C

Start Date: Less than one month

Looking to add side extension first and loft to existing ground floor side extension. And s possible lower ground floor rear extension of about 10sqm to existing extension. I am always off on a Wednes...

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30 Sep

House Extensions

Hertford - SG14

Enquiry from: Val B

Start Date: 1 to 3 months

3m£ porch pitched tiled roof ,brick built with double glazed door and round window at the front left hand end . Are you the property owner: Owner of the property Do you have planning permission: No W...

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13 Jan

House Extensions

Hertford - SG14

Enquiry from: Ivonne M

Start Date: Immediate

Small extension required for living room Planning permission: No

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08 Jan

House Extensions

Hertford - SG14

Enquiry from: Gerald W

Start Date: 3+ months

Work description: Rear Extension Are you the property owner: Owner of the property Property Type: Semi detached Looking For: Single storey extension Do you have planning permission: No Would yo...

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06 Oct

House Extensions

Hertford - SG14

Enquiry from: Laura C

Start Date: 3+ months

contemporary flat roof extensions. 3m deep, 10m wide. flat roof lights x 3. floor to ceiling sliding doors. Kitchen plumbing to be moved. No existing building to be removed. External block and render...

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10 Mar

House Extensions

Hertford - SG14

Enquiry from: Jenny C

Start Date: 3+ months

We are looking for quotes for a side double storey extension of approx 32m sq per storey- total 64 m sq, plus back extension of 21 sq m. Side extension to house 2 bedrooms and ground to house study, u...

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07 Mar

House Extensions

Hertford - SG14

Enquiry from: Diarmid M

Start Date: Immediate

Demolish 1.5m x 2m "back porch" and replace with 2.5m x 3.5m brick built single storey extension. The extension is joined to, but not connected through to the main house. It will have an exterior do...

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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.

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.
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.

how to finance a house extension?

Do you want to beautify and increase the value of your home? If yes, a refurb and house extension is definitely a great option to consider. Depending on your home extension project, the value that’ll be added to your home’s resale value varies. However, the cost of completing a house extension project can be huge, so you just might want to consider your financing options. Fortunately, there are various options through which your house extension project can be funded with each having its own pros and cons. Your specific circumstances will determine the one that’s going to work best for you, so let’s take a look at some of the best options to help you fund your project.

• Home Remortgaging

The process whereby a mortgage is transferred from one provider to the other is known as remortgaging. This is usually done to generate funds for a project by entering a more lengthy repayment term commitment when switching. If you want to raise your funds in a quick manner, this process works best.

• Savings

This is a good reason to cultivate a good saving habits. If you’ve been able to save up some mega bucks then you’d probably won’t have to borrow money to finance your house extension.

• Unsecured Loans

If you do not buy into the idea of borrowing more against your property, you may just be able to apply for an unsecured loan especially if you have a good credit record. A secured loan makes use of collaterals like a car or house to serve as a cover for the lender, meanwhile an unsecured loan is based mainly on the credit managing history of the borrower.

• Credit Card

There are some great benefits that comes with financing your small or medium scale extension project with your credit card. Not only does it offer some real lifeline if problems arise during the project, but you can also avoid paying excessive interest on the investment by ensuring your deal has a 0% introductory rate.

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Hertford House extensions installers are rated 4.3 out of 5 based on 8 reviews of 77 pros.
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