House Extension in city

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House Extension in city

House extension features a large range of advantages which makes it very easy to see why the extension could be a great uptick in the possible rate of your home in regards to sales. So if you're looking to develop a new residence extension yet still not convinced concerning the project, we're right here to help you. Being fully mindful any type of house building work is usually 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 some of the leading advantages supplied by house extensions to aid you decide if it's the most ideal route for you.

 

What's Associated with Adding an Extension?

The actions will vary relying on the range of your extension, however you can anticipate some, otherwise all, of the listed below to be entailed when adding an extension to your house:

 

  1. Getting Building Regulations or Planning Permission (if needed as the extension is larger than permitted development).
  2. Inspecting your leasehold agreement (if appropriate) to see to it you can do what you wish to do.
  3. Employing an architect  to prepare the plans, considering your intended use ( kitchen area, bathroom, office).
  4. Hiring a competent builder with experience of larger projects.
  5. Calling your insurance coverage supplier to allow them understand of the planned work ahead of it starting.
  6. Getting parking permits if required for your service providers to guarantee they have simple access to your property.
  7. Making certain all intended job falls within permitted allowables.
  8. Clearing the space and also excavating if needed, consisting of the elimination of trees.
  9. Building work can start.

 

What is the expense of a house extension in city?

If you're taking into consideration including a 2 floor house extension, then setting a allocate this task would be a terrific way to get going. Similar to a rear extension, a two storey extension normally leaves the remainder of the building needing some work as well as, because of its size, this may suggest the re-development of the entire house - which is why they can be very expensive. Some of the various other affecting elements that can have large effect on a two floor house extension expense consists of: your place, the dimension of the develop, complexity of the style (anything past the standard build will usually call for even more knowledge and also time), the glazing to be integrated (the extra the glass used in the task, the much more the product cost), in addition to the group made use of.

Average House extensions cost in Portsmouth

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

House extensions installation cost in Portsmouth 2026

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

House extensions searches in June 2026

House extensions Projects in Portsmouth in May 2026

6,538

Requests for quotations in Portsmouth in May 2026

10

Requests for House extensions quotations in Portsmouth in May 2026. 0% change from April 2026.

160

Requests for House extensions quotations in Hampshire in May 2026. 7% change from April 2026.

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

House extensions searches in cities and towns near Portsmouth May 2026

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Requests for quotations in Portsmouth in May 2026

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Portsmouth

Portsmouth is a large city on the southerly coast of Britain and it's the 14th greatest urban region in the country. Portsmouth gained recognition from its port, which like lots of others in the UK, was greatly targeted in World War Two by German bombers. Much of the city has long been reconstructed over the last 60 years but we get lots of requests for top tradesmen in Portsmouth throughout the year in a number of home improvement categories.

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Similar Customer Enquiries for House extensions in Portsmouth

09 Jan

House Extensions

Portsmouth - PO6

Enquiry from: John G

Start Date: Immediate

2 x 3 metre walls from bungalow 5 metres of bi-fold doors across the front. pitched slate roof built into existing roof

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12 Sep

House Extensions

Portsmouth - PO6

Enquiry from: Martin C

Start Date: Immediate

15 Mar

House Extensions

Portsmouth - PO2

Enquiry from: Grant C

Start Date: Less than one month

Hi. I am gathering quotes on alterations to an existing single storie extension. Basically the rear of the house has been extended, comprising of a conservatory & a utility room. This extension has be...

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06 Feb

House Extensions

Portsmouth - PO3

Enquiry from: David H

Start Date: Immediate

Customer visited the myhouseextension.co.uk site and submitted an enquiry. Property type: Semi detached, Work description: 2 floor side extension

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07 Dec

House Extensions

Portsmouth - PO6

Enquiry from: Paul W

Start Date: Immediate

am looking to put a single storey extension on the rear of my property to increase the size of my kitchen / diner.

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23 Oct

House Extensions

Portsmouth - PO6

Enquiry from: Michelle P

Start Date: Immediate

Single storey ext to back of house with windows, French doors and velux windows in roof

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03 Aug

House Extensions

Portsmouth - PO2

Enquiry from: Kevin P

Start Date: Immediate

Single story kitchen extension at rear of house spanning 6 metres wide by 5 metres deep

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06 Apr

House Extensions

Portsmouth - PO2

Enquiry from: Simon C

Start Date: Immediate

Single story extension including steel calcs

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04 Apr

House Extensions

Portsmouth - PO6

Enquiry from: Kevin C

Start Date: Immediate

Home owner Semi detached Single story extension - create more living space 5x7 mtr sq Plans and Planning permission being done Please Contact to Appoint *

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04 Mar

House Extensions

Portsmouth - PO6

Enquiry from: Kevin C

Start Date: Immediate

Home owner Semi detached Single story extension - create more living space 5x7 mtr sq Plans and Planning permission being done Please Contact to Appoint *

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22 Jan

House Extensions

Portsmouth - PO3

Enquiry from: Polly R

Start Date: Immediate

Home owner Semi detached Double extension - create more living space Assist with plans and planning permission Time scale: 1-3 months Please Contact to Appoint *

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09 Nov

House Extensions

Portsmouth - PO6

Enquiry from: S M

Start Date: Immediate

Homeowner Two storey extension Extension front Porch - 6m*2m Extension Back - 7.5m*5m - double storey Renovate Master Bathroom upstairs Renovate Kitchen Downstairs Supplied and installed Plea...

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03 Aug

House Extensions

Portsmouth - PO1

Enquiry from: Derek S

Start Date: 3+ months

Build single garage with option for possible storage or office extension on plot at rear of house and garden. Are you the property owner: Owner of the property Property Type: Semi detached Do you h...

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10 May

House Extensions

Portsmouth - PO3

Enquiry from: Paul C

Start Date: Immediate

Extension Are you the property owner: Owner of the property Looking For: Single storey extension Do you have planning permission: No Would you require assistance to gain this: Yes Do you have pla...

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26 Jan

House Extensions

Portsmouth - PO6

Enquiry from: Harry M

Start Date: 3+ months

Home owner Rear single story extension with approximate floor plan dimensions of 6m x 3m. Hlease contact 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.

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.

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.

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