Ground floor House Extension in Northampton

Request Single Storey House Extension Prices in Northampton

Home > Extensions & Conversions Projects > Single storey house extension > Northampton

Ground floor House Extension in Northampton

Are you looking for Single storey house extension in Northampton? Our network of builders can aid with your job. All of our Builder in Northampton are examined so you can see local testimonials, when the business was set up, ratings, approval as well as cost,  allowing you to make the appropriate decision on who to work with. Allow us take the problem out of finding up to 4 pros 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 is often very cost effective and they're suitable for a wide variety of properties. Smaller single storey home extensions can be built without having to make an application for planning permission as they are protected by permitted development rights. Substantial single storey extensions will still need planning permission. Single storey home extensions can also often be located to either the side or back of a house. Single storey home extensions are often used to expand kitchen areas or even to add a downstairs study or utility room.

 

They are also often used to create a larger open plan area in the downstairs of the property that could 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 into the garden. While single storey home extensions may appear simpler than other varieties of extension, careful planning continues to be needed to make sure that the new space is useful and beautiful. Experienced architects and builders will be able to give you advice on the most suitable design for your home extension, taking into account the needs of the new space as well as the best way to complement the pre-existing building. Your single storey home extension could be designed to accentuate your pre-existing property and employ similar materials for its construction or be designed to contrast, presenting a striking effect by using different materials.

 

Aspects that effect Single Storey Extension Costs

There are a few elements to bear in mind when you are establishing your budget plan. The primary elements that affect the cost of a single storey extension are the size and the coating. However there are various other elements that it is worth remembering while you are making your strategies.

Very Expensive Groundworks Needed

If it is hard to dig the foundations and also lay the footing for your extension, after that this can raise the price of your extensions. This could be the instance if the ground is difficult to work with. Particles in the ground can also increase the costs.

  • Quality of Fixtures and Fitting
    After the size of the extension, the following greatest factor is the grade of the coating. Picking high-end options can bring about the last rate being greater than double what it would be when choosing the basic options.
  • Dimension of Extension
    When you are getting an extension on your house, the single most significant variable that will influence the price of your extension is the size of it. The bigger the extension is, the more you will certainly wind up paying. If the location inside the extension is easy, without internal wall surfaces, then this will certainly reduce the cost per m2 somewhat. However, despite this in mind. The bigger the area of your extension, the a lot more you pay.
  • Kind of Extension
    The type of extension you select will go a long way towards dictating just how big your extension will be. Side return extensions create the smallest added space so are often the cheapest alternative, while a wraparound cooking area extension will certainly create the most area and also have the most pricy fittings and fixtures.
  • Building Regulations
    In most cases, building policies don't add a great deal of cost to a building job. However, if you are building an extension onto an older house, there might be some unforeseen costs. This is particularly true if the home has actually not lately been updated. Building laws will apply to your whole house, not simply the extension. This can cause the need for electrics to be checked out or door replaced.

 

Kitchen Extensions:

Kitchen extensions mainly fall under the realms of single storey extensions, although all type of property extensions could be made use of to integrate extra room for a kitchen.

As an approximate guide, a single storey extension will cost from ₤ 1,000 - ₤ 2,000/ m2, with a standard develop at the reduced end of the scale and also an excellent build top quality at the greater end at a variety, with prices of ₤ 2,500/ m2 plus.

 

How to find a builder for your extension:

We will supply as much as 4 Single storey house extension pros locally, that will offer quotes for the job you desire done. You'll obtain a property visit from experts in Northampton that'll aid you to select the ideal Single storey house extension for your residence prior to carrying out the installment. Enter your postcode to begin searching currently.

Average Single storey house extension cost in Northampton

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 Northampton, as reported by local LeadsDoWork members.

Single storey house extension installation cost in Northampton 2026

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

Single storey house extension on Google in Northampton

Google searches that showed Local Quotes, 18 July to 15 October 2026

8,090

Searches that showed one of our pages for Northampton, all services

990

Searches that showed our Single storey house extension page for Northamptonshire

Source: Google Search Console, the number of times our pages appeared in Google search results. It counts searches that showed the page, not quote requests.

Single storey house extension searches near Northampton, 18 July to 15 October 2026

107

Searches that showed our page for Daventry

12

Searches that showed our page for Rushden

7

Searches that showed our page for Kettering

4

Searches that showed our page for Towcester

Northampton

The major market town of Northampton is found in East Midlands, 67 miles from the capital city of London. By having a populace over 212,000, Northampton is the UK's third biggest town, behind Reading and Dudley. Northampton has a history of manufacture, especially in the shoes and boots industry, but machinery has taken over in the modern era. For top house improvement quotes in Northampton, review pricing between local, vetted experts.

Looking for Single storey house extension in Northampton?

Get free quotes from local builders

Get free quotes

Single storey house extension pros in Northampton

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

Angela A., HP1
3

Single Storey House Extension in Hemel Hempstead

Assured me he Would give me a good price which made me feel less confident with this builder he was supposed to phone on...

Similar Customer Enquiries for Single storey house extension in and around Northampton

12 May

Single storey house extension

Daventry - NN11

Enquiry from: Justin B

Start Date: Immediate

We want a 12m2 single storey extension to replace an all glass conservatory & would like an idea of the cost

Post a similar request >

11 Jul

Single storey house extension

Daventry - NN11

Enquiry from: Elaine W

Start Date: Immediate

Looking at a side extention of approx 7 ft for the full lenght of bungalow . Moving bathroom out and extending kitchen and bedroom

Post a similar request >

05 Jul

Single storey house extension

Kettering - NN14

Enquiry from: Graham Q

Start Date: Immediate

Blockwork for single extension, foundation already poured. Additional work to be discussed. Approx 3m x 6m x 7m

Post a similar request >

13 Jan

Single storey house extension

Northampton - NN2

Enquiry from: Eamon N

Start Date: Immediate

A single story extension with a skylight going 3 m out by 5 1/2 m wide

Post a similar request >

Advertisement

Local & reliable builders near me

Tell us about your single storey house extension project

Answer a few quick questions, so we can match you with local builders who can help.

Find up to 4 builders in Northampton

Get free, no-obligation local single storey house extension quotes from 4 verified builders working in Northampton.

Hire with confidence

Compare customer reviews, services and prices, and choose the right tradesperson for you.

Our reviews

Average

Quick responses and lots of informa ...

Quick responses and lots of information shared

It did help me to find good archite ...

It did help me to find good architect.

Did all the leg work to identify ap ...

Did all the leg work to identify appropriate traders to complete my job

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).

do i need planning permission for a kitchen extension?

If you’re planning to construct a kitchen extension on your property, one of the first things that comes to mind is whether or not you’ll require a planning permission before you proceed. Generally, kitchen extensions are normally classified as permitted development which allows you to carry out your project without any interruptions from the law or your local authority. In other words, if your extension is meets up with the guidelines of the permitted development rights, you won’t have to apply for a planning permission. However if otherwise, you’ll have to apply for a planning permission to your local council and may require additional reports. And regardless of your position, you’ll always need building regulations approval before you can carry out any kitchen extension project. It may also be required that you’ll have to issue a part wall notice if you’re to build on or close to the boundary with a neighbour.

If you don’t want to go through the hassle and stress involved in applying for a planning permission with your local council, then you must ensure the following:

✓ Your kitchen extension must not be over half of the area of land around your main house.

✓ The kitchen extension must not be side elevation onto a highway or forward of the principal elevation.

✓ The extension must not be taller than the highest part of the roof.

✓ The height of your kitchen extension must not go beyond four metres.

✓ Kitchen extension that’s more than one storey must not go exceed the rear wall of the main house by more than three metres.

✓ Two storey kitchen extensions must not be closer to rear boundary by anything less than seven metres.

✓ The kitchen extension must not include balconies, verandas or any raised platforms.

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.

how much does a kitchen diner extension cost?

If you’re planning to construct a kitchen diner extension, to help you set a budget and start planning you must first have a cost estimate that’ll complete the entire project. If not, there’s a probability that you may have to spend more than would have been necessary or probably break the bank to have the project done. In truth, there’s no single and short answer to this question as the cost of a kitchen diner is largely dependent of several variables. In this article, we’re going to give a good insight into kitchen diner extension cost so as to help you make informed decisions moving forward. Let’s take a look!

On the average, a kitchen diner extension will cost within the range of £25,000 to about £45,000, however if you happen to reside in London, you can expect the cost to be a lot more than that - closer to £60,000. And due to the fact that there happens to be a plethora of options out there, any decision to make be it on the size, tradesman, flooring, finishes or type of the kitchen diner extension, will have a considerable impact on the overall cost of the project. For instance, a basic kitchen diner extension cost can be within the range of £12,000 to about £15,000., while a high end kitchen diner extension can reach a whooping price between £80,000 to about £100,000.

The total cost of your kitchen diner project will rely heavily of the size as well as the quality of the finishes. For example, a kitchen diner extension that’s small and basic is likely to cost about £1,300 to £1,500 per square metre. However, if you’re going for higher quality finishes, you can expect to pay within the range of £1,900 to about £3,000 per square metre.

Single storey house extension

Other Top Projects in Northampton

Customer Reviews

Overall rating:


Northampton Single storey house extension pros are rated 4.3 out of 5 on average: 4 rated pros, 56 reviews, of 16 pros covering the area.
The LeadsDoWork rating and review is an overall rating based on verified reviews and feedback from the customers with Single storey house extension projects that have been connected with Single storey house extension pros to help them. All Single storey house extension contractors All Northampton Single storey house extension contractors

Are you a builder in Northampton?

We can help you get more single storey house extension work with our qualified job leads and boost your business.

Join today