Ground floor House Extension in Grantham

Discover Single Storey House Extension Prices in Grantham

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Ground floor House Extension in Grantham

Are you seeking Single storey house extension in Grantham? Our network of builders can assist with your project. All of our Builder in Grantham are inspected so you can see local customer reviews, when the business was started, rankings, approval and also cost,  enabling you to make the appropriate choice on who to work with. Allow us take the hassle out of discovering as much as 4 experts for your Single storey house extension job.

Single storey extensions are a great way to add space and value to your property. A single storey extension can be very cost effective and they're appropriate for a wide variety of homes. Smaller single storey home extensions can be built without the need to apply for planning permission as they are covered under permitted development rights. Substantial single storey extensions will still need planning permission. Single storey home extensions can also often be positioned to either the side or back of a house. Single storey home extensions can be used to expand kitchens or even to put in a downstairs study or utility room.

 

Also, they are often used to create a larger open plan area in the downstairs of the house that may be used as a kitchen diner or living area. Adding roof lighting and bifold doors to your home extension will generate a huge airy space that provides a seamless transition in to the garden. While single storey home extensions may appear simpler than other sorts of extension, careful planning is required to ensure that the new space is useful and beautiful. Experienced architects and building contractors can give you advice on the most effective design for your home extension, taking into account the requirements of the new space as well as the best way to complement the present building. Your single storey home extension could be designed to match your present property and use similar materials for its construction or be designed to contrast, presenting an impressive effect by using differing materials.

 

Aspects that effect Single Storey Extension Prices

There are a couple of variables to keep in mind when you are setting your budget. The primary factors that influence the cost of a single storey extension are the size as well as the coating. But there are various other variables that it deserves remembering while you are making your strategies.

Costly Groundworks Needed

If it is difficult to dig the structures as well as lay the ground for your extension, after that this can boost the price of your extensions. This might be the instance if the ground is tough to deal with. Particles in the ground can additionally raise the costs.

  • Caliber of Fixtures as well as Fitting
    After the dimension of the extension, the next greatest element is the caliber of the finish. Picking premium choices can result in the last cost being greater than double what it would certainly be when choosing the basic options.
  • Size of Extension
    When you are obtaining an extension on your house, the single largest variable that will affect the cost of your extension is the size of it. The bigger the extension is, the extra you will certainly wind up paying. If the area inside the extension is easy, without any internal walls, then this will certainly lower the cost per m2 somewhat. Nonetheless, despite this in mind. The bigger the area of your extension, the extra you pay.
  • Type of Extension
    The kind of extension you select will go a long way in the direction of determining just how large your extension will be. Side return extensions develop the smallest additional room so are usually the least expensive choice, while a wraparound kitchen extension will create the most area and have one of the most over-priced fittings and components.
  • Building Regulations
    Most of the times, building policies do not add a lot of cost to a building task. Nevertheless, if you are developing an extension onto an older house, there might be some unexpected costs. This is specifically true if the house has not recently been upgraded. Building laws will apply to your whole home, not simply the extension. This can cause the need for electrics to be taken a look at or door changed.

 

Kitchen Extensions:

Kitchen extensions mainly come under the areas of single storey extensions, although all kinds of property extensions could be used to integrate additional room for a kitchen.

As an approximate guide, a single storey extension will cost from ₤ 1,000 - ₤ 2,000/ m2, with a standard construct at the lower end of the range as well as an exceptional develop high quality at the greater end at an array, with costs of ₤ 2,500/ m2 plus.

 

How to find a builder for your extension:

We will offer as much as 4 Single storey house extension pros locally, that will offer quotations for the work you desire done. You'll receive a property visit from experts in Grantham that'll help you to pick the best Single storey house extension for your house prior to accomplishing the installation. Enter your postal code to begin browsing now.

Average Single storey house extension cost in Grantham

The typical cost of Single storey house extension is £29000. Costs alter based on the materials and the firm selected. The upper price range can be as high as £34800. The material costs are in general around £12000

Average price per Single storey house extension job in 2026

Avg. price low

Avg. price low
£23,200

Avg. price

Avg. price
£29,000

Avg. price high

Avg. price high
£34,800

£35300

£26475

£17650

£8825

£0

Prices based on actual Single storey house extension costs for Grantham, as reported by local LeadsDoWork members.

Single storey house extension installation cost in Grantham 2026

Labour cost £14,000
Material cost £12,000
Waste removal £3,000
Time frame: 8-12 weeks

Single storey house extension searches in September 2026

Single storey house extension Projects in Grantham in August 2026

1,146

Requests for quotations in Grantham in August 2026

0

Requests for Single storey house extension quotations in Grantham in August 2026. 0% change from July 2026.

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Requests for Single storey house extension quotations in Lincolnshire in August 2026. 0% change from July 2026.

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

Single storey house extension searches in cities and towns near Grantham August 2026

Grantham

Grantham is a market town in the South Kesteven region of Lincolnshire. The town contains a populace of 34, 592 people, all located in 18,000 households in the region. If you're looking for home enhancements in the future, make certain to utilise only vetted and respectable professionals in Grantham and check quotations to get the best price available on the market.

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Similar Customer Enquiries for Single storey house extension in Grantham

15 Mar

House Extensions | Single Storey

Grantham - NG32

Enquiry from: Terence C

Start Date: 1 to 3 months

3 sided brick and glazed porch with centre door built under existing roof time scale: 1-3 months please call to appoint

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27 Apr

House Extensions | Single Storey

Grantham - NG31

Enquiry from: Ray B

Start Date: Immediate

customer in the grantham area made an enquiry a couple of projects including single storey house extension.call anytime and arrange an appointment to discuss. below is some details about this project:...

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15 Mar

House Extensions | Single Storey

Grantham - NG31

Enquiry from: Neil B

Start Date: 1 to 3 months

http://www.southkesteven.gov.uk/index.aspx?articleid=8170#/application/s18%2f0456/documents planning approval ther a a couple of tweaks to do, as well , in total approx 20 sq meters, time scale: 1-3 ...

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23 Apr

House Extensions | Single Storey

Grantham - NG31

Enquiry from: Peter R

Start Date: 1 to 3 months

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 Property Type: Detached Looking For: Si...

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05 Apr

House Extensions | Single Storey

Grantham - NG31

Enquiry from: Pete R

Start Date: Immediate

Looking for quotes to build a single story pitched roof extension 3M x 5M and also 4M x 5M. This is to include an extension to existing kitchen. There are qty x 2 waste inspection covers that would n...

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27 Sep

House Extensions | Single Storey

Grantham - NG31

Enquiry from: Joy C

Start Date: Immediate

Customer is currently in the process of looking for quotes to add a Single storey extension to their property. Are you the property owner: Relative of Owner Property Type: Detached Looking For: Single...

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20 Jun

House Extensions | Single Storey

Newark - NG24

Enquiry from: Ade A

Start Date: Immediate

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

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02 Jul

House Extensions | Single Storey

Sleaford - NG34

Enquiry from: Graeme J

Start Date: Immediate

36 square meter (6mx6m) single storey extension with 4m of sliding doors on two walls. Extension will be on back of a bungalow and wall knocked through to create kitchen/diner/lounge.

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03 Mar

House Extensions | Single Storey

Sleaford - NG34

Enquiry from: Linda C

Start Date: Immediate

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 property type: detached looking for: si...

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21 Sep

House Extensions | Single Storey

Sleaford - NG34

Enquiry from: Gilly B

Start Date: Immediate

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 property type: detached looking for: si...

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16 Sep

House Extensions | Single Storey

Sleaford - NG34

Enquiry from: Gilly B

Start Date: Immediate

we already have a cover over the front door but would like to turn it into a porch. are you the property owner: owner of the property do you have planning permission: no what material are you looking...

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30 Jul

House Extensions | Single Storey

Sleaford - NG34

Enquiry from: Janet S

Start Date: Less than one month

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 property type: detached looking for: si...

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20 Feb

House Extensions | Single Storey

Melton Mowbray - LE14

Enquiry from: Debbie J

Start Date: Immediate

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 Property Type: Semi detached Looking Fo...

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13 Jan

House Extensions | Single Storey

Sleaford - NG34

Enquiry from: Jon F

Start Date: 1 to 3 months

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 Property Type: Detached Looking For: Si...

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03 Dec

House Extensions | Single Storey

Nottingham - NG13

Enquiry from: Mark S

Start Date: Immediate

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 Property Type: Detached Looking For: Si...

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05 Aug

House Extensions | Single Storey

Nottingham - NG13

Enquiry from: Mrs L

Start Date: Immediate

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 Property Type: Detached Looking For: Si...

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12 May

House Extensions | Single Storey

Sleaford - NG34

Enquiry from: Simon F

Start Date: Less than one month

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 Property Type: Detached Looking For: Si...

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26 Jan

House Extensions | Single Storey

Sleaford - NG34

Enquiry from: Albert G

Start Date: Immediate

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 Property Type: Detached Looking For: Si...

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14 Aug

House Extensions | Single Storey

Sleaford - NG34

Enquiry from: Paul R

Start Date: Immediate

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 Property Type: Detached Looking For: Si...

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27 Jul

House Extensions | Single Storey

Bourne - PE10

Enquiry from: Paul D

Start Date: Immediate

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 Property Type: Detached Looking For: Si...

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FAQs

how much does a single storey house extension cost?

If you’re planning to build a single story house extension, this is one of the first questions that usually comes to mind to help you set a budget and start to make plans. But as simple as it seems, a single accurate answer can not be provided due to the fact that there are several variables that can play a key role in influencing the price of a single story house extension. These variables includes the size, location, design or specification as well as the build route. In this guide, we’ll provide you with a rough estimate that you can work with to put you on the right path.

The main determinant of the cost of a single storey extension is the size of the build, while the next most relevant factor is the quality of the finish you opt for. For a small extension, you can expect to spend a sum within the range of £14,000 to £17,000. Meanwhile for a larger single storey extension, if you opt for a large wrap around the extension with a great amount of glass to be incorporated in both the walls and roof, you can expect to pay a sum within the range of £80,000 to £120,000.

Overall, the average cost of a single story house extension is usually within the range of £34,000 to £37,000. For this price, you should get a standard sized rear or side extension which also includes the cost of a kitchen - it’s the most commonly use for a single story extension especially in the UK.

There are some additional costs you may also need to factor in to your extension budget. These includes surveys, architect fees, planning application fee (if needed), insurance and Party Wall Agreement (if needed).

How to find a builder for a house extension?

Builders are everywhere, but finding one for your project can be tricky and stressful, with both cost and reliability coming into question. This is even more worrisome when you’re fully aware that your house extension can only be as good as the builder. If you’re also facing the same challenge, then you’ve come to the right place. In this article, we’ll share with you some tips on how to choose a professional and reliable builder who’ll ensure you get immense value for every penny spent. Let’s take a look!

✓ Ask for recommendations. To find a tradesperson, not just a builder, personal recommendations is the best way to go. Building a house extension is a major undertaking which comes with a lot of costs, so if you’re going to do it the least you can do is ensure you do it right. Carry out your research, ask friends and family, neighbours and loved ones if the know of any reliable builder in the local area. If they’ve have one they’ve used, you can request for the cost, quality of the job done, the duration of the project and any other detail you feel you should know.

✓ Search Online. Use our search feature to look at the builders available or submit and enquiry and we will find you one. Our site holds details of numerous builders and building companies which you can go through their ratings to select the best.

✓ Select a reliable builder from trading association. Most reliable builders are usually a member of a recognized trading association or the other. Though this is not obligatory for builders, but it can be used as a dependable medium to find a good builder. We list what trade association the builders are a member of.

does a kitchen extension add value to your house?

If you’re planning to add a kitchen extension to your property or perhaps you’re simply looking for ways to increase the value of your property, this is one of the common questions that usually pops up. A simple answer to this question is yes, a kitchen extension will add value to your house. With a kitchen being one of the most frequently used room in a house, adding an extra space to the commonly used room can only increase the value of the entire property. However, to determine the value added by such an extension, there’s a need to calculate the cost of setting one up first.

Kitchen extension costs are greatly influenced by a wide range of variables such as the size, type of the extension and specifications, your location, professional fees, materials used and more. Overall, the type of the extension you opt for will play the most significant role in the determination of your kitchen extension cost. Here, we’ll be looking at a single storey kitchen extension.

For a single storey kitchen extension, you can expect your home’s market value to increase within the range of 5 percent to about 10 percent. When trying to calculate the cost of kitchen extension, it’s crucial to take into account how much value it’ll add to your home so as to make sure that the amount expended will not outweigh the expected value to be added by the project.

For a more accurate idea, there’s the need to consult local estate agents. However, for a much needed guideline, single storey kitchen extensions are usually able to add about 5 to 10 percent to a home’s value, while double storey extension should be up to 20 percent. But as stated earlier, this will depend on several variables.

how much is a ground floor extension?

Generally, extensions can be a very tricky undertaking - where it can be quite difficult to have a clear comprehension of the rules, regulations as well as costs. Therefore before you rush in to kick start your ground floor extension project, it’ll be wise to get a good grip on the cost. In this article, we’re going to give you a rough estimate of the cost of a ground floor extension. Let’s take a look!

Just like several other home improvement projects, the cost of constructing a ground floor extension is based on a number of things which includes the size, materials used, your location, the quality of the tradesmen or company hired and lots more. For instance, if you happen to reside in London, the cost of your ground floor extension is going to be a lot higher than the other regions.

The single cost of a ground floor extension should fall within the range of £1,500 per square metre to about £2,000 per square metre. However, if you happen to live in London or the South East, this price can reach up to £1,900 per square metre to about £2,400 per square metre. These prices are for good quality ground floor extensions only. Basic or low quality extensions would naturally cost less while superior quality extension will cost more.

Now looking at the size of the ground floor extension, if you’re looking for a size of about 5m x 5m, you can expect to pay a price within the range of £32,000 to about £36,000. And as usual, in London or the South East, this price can reach up to £50,000 or even more. And that’s just for constructing the extension. If the other relevant costs like the 10 percent to 15 percent professional fees for the architect, planning application (if needed), building regulations and more, the price goes up.

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