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Verified Pro
Welcome to Haas Extension Group, where we take pride in being the premier suppliers, installers, and design consultants of...
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At Surrey Hills Extend & Renovate we promise Quality and Craftsmanship. We take pride in delivering superior quality in ev...
Verified ProOver 10 Reviews

Stoneartuk

14 review(s)
Offers services in BARNET
Hi my name is Martin from stone art uk ltd we are a local run landscaping company within the Pinner area we specialise in ...
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Loft & Build

0 review(s)
Offers services in BARNET
We can cover all aspects of a loft conversion and extensions. If you require, we can also design the project including dr...

Recent Builder Enquiries

02 Oct

Insulation | Cavity Wall

Barnet - EN4

Enquiry from: James M

Start Date: Immediate

customer in the barnet area made an enquiry a couple of projects including cavity wall insulation.call anytime and arrange an appointment to discuss. below is some details about this project: are you ...

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22 Jan

Insulation | Cavity Wall

Barnet - EN5

Enquiry from: Bhavesh P

Start Date: Immediate

Cavity wall insulation - beads

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17 Oct

Insulation | External Wall

Barnet - EN5

Enquiry from: DAVID S

Start Date: Immediate

Solid wall external insulation, semi detached bungalow with attic conversion

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21 Sep

Insulation | External Wall

Barnet - EN4

Enquiry from: Kate N

Start Date: Immediate

External wall insulation (not cavity) on one external wall only (side of house).

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28 Mar

Conversion | Loft

Barnet - EN5

Enquiry from: Dinu S

Start Date: Immediate

homeowner loft conversion- no previous quotes please call to appoint

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06 Sep

Building work | General

Barnet - EN4

Enquiry from: Tracy W

Start Date: 1 to 3 months

customer has a general building project they are looking to have done, specially they want quotes for building maintenance. they are unsure of options so would like to discuss with a builder.confirmed...

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27 Jul

New Build | Residential

Barnet - EN5

Enquiry from: Besjana F

Start Date: Immediate

customer in barnet areas is looking to do a couple of projects at the moment, and would like quotes for new build homes.confirmed interest via email at 27/07/2022 12:17.please call to arrange appointm...

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14 Jul

Driveway Repair

Barnet - EN5

Enquiry from: Nabil D

Start Date: Immediate

repair/replace driveway and walkway that was damaged by waterworks are you the property owner: owner of the property property type: terrace what level of service do you require: repair to cracks what ...

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24 Jun

Driveway Repair

Barnet - EN5

Enquiry from: Nabil D

Start Date: Immediate

repair/replace driveway and walkway that was damaged by waterworks are you the property owner: owner of the property property type: terrace what level of service do you require: repair to cracks what ...

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23 Dec

Conversion | Loft

Barnet - EN4

Enquiry from: Elitsa N

Start Date: Immediate

Staircase for loft on semi detached house house with fourteen steps and two left turns .

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24 Apr

House Extensions | Single Storey

Barnet - EN5

Enquiry from: Ashok H

Start Date: Less than one month

ground floor single storey side extension in sip panels. pitched roof. pad and beam foundation and concrete raft foundation. plumbing and fit supplied shower room and cabinets. time scale: less than ...

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19 Apr

House Extensions

Barnet - EN5

Enquiry from: Folakemi E

Start Date: 1 to 3 months

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

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07 Apr

Building work | General

Barnet - EN4

Enquiry from: Colette O

Start Date: Immediate

customer in the barnet area made an enquiry a couple of projects including building maintenance.call anytime and arrange an appointment to discuss. below is some details about this project: property t...

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06 Apr

Insulation | Loft / Roof

Barnet - EN4

Enquiry from: Antoni M

Start Date: Immediate

we live in a semi-detached in east barnet. we have just moved in and believe the loft insulation in there is old and probably no longer effective. it would be great for someone to see and provide a qu...

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10 Mar

Building work | Wall Rendering

Barnet - EN4

Enquiry from: Mirjam S

Start Date: Immediate

rendering of outer wall between ground floor and first floor are you the property owner: owner of the property property type: terrace how many bedrooms do you have: 3-4 bedrooms how many walls are you...

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15 Jan

Building work | General

Barnet - EN5

Enquiry from: Karthik R

Start Date: Immediate

are you the property owner: owner of the property property type: other other forms: building maintenance agreed to receive quotes for selected products: yes please call to appoint

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28 Oct

House Extensions

Barnet - EN5

Enquiry from: Lara E

Start Date: Immediate

i would like a back extension

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02 Sep

Conversion | Loft

Barnet - EN4

Enquiry from: Mayur P

Start Date: Immediate

loft conversion quote required for 3 bed semi

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24 Aug

House Extensions

Barnet - EN4

Enquiry from: Jing G

Start Date: Immediate

i would like to build a brick porch (1.5m x 2m) with a door, two windows and pitched roof. are you the property owner: owner of the property do you have plans drawn up: no do you have planning permiss...

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19 Aug

House Extensions

Barnet - EN4

Enquiry from: Jing G

Start Date: Immediate

i would like to build a brick porch (1.5m x 2m) with a door, two windows and pitched roof. are you the property owner: owner of the property do you have plans drawn up: no do you have planning permiss...

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How much do Builder services cost?

How much do Builders cost? Prices for Builders in 2025 can fluctuate relying on the sort of work that you need to have carried out in your residence.

Are you planning to erect a new house or structure? If yes, then you’d probably want to know just how much it’ll take to get the project over the line to help you set a budget and start to plan. Building a new house is requires huge financial investment and as a result, there’s the need to carry out your due diligence before you proceed. In this post, we’re going to give you an insight into the prices charged by builders to erect a new home or structure.

First and foremost, like every other home project, the price charged by builders to construct a new house or structure depends on a wide range of factors. These factors include the size, location, accessibility as well as qualifications of the builders you wish to employ just to mention a few. For instance, you’d expect the cost of building two-storey in London to be a lot more expensive than the price of a one-story building in Scotland. However, we’ll try our best to give you an idea of the price range you can expect to incur to complete your project.
In general, a builder will charge within the range of £10 to about £15 per hour on the average. For small building projects which includes wall and foundations repairs, a builder will typically charge about £11 per hour. However, the price charge will depend on the extent of the job due to the fact that simple tasks such as repointing only costs about £10 per hour, while laying new foundations can cost up to £15 per hour.

The table shows the types of work that Builders typically do and the average cost range of these tasks. Some tasks take longer to finish than others so prices do fluctuate by job.

View our Builder cost guide View our Builder advice

The average price
of a Builder in Barnet is:

£25,867

Builder job Builder cost in 2025
Garage conversion in Barnet £9,750-£18,450
Loft conversion in Barnet £31,250-£67,917
House extensions in Barnet £32,400-£75,600
Loft insulation in Barnet £450-£690
Upvc or wood porch in Barnet £2,625-£4,025
Barn conversions in Barnet £112,500-£172,500
Basement renovation in Barnet £30,000-£46,000
Bedroom fitting in Barnet £1,500-£2,300
Bricklayers in Barnet £300-£460
Cavity wall insulation in Barnet £400-£820
Commercial new builds in Barnet £105,000-£161,000
Conservatory base in Barnet £675-£1,035
Building maintenance in Barnet £2,250-£3,450
Building insurance works in Barnet £2,250-£3,450
Pebble dashed walls in Barnet £2,000-£9,200
Plasterboard dry lining in Barnet £638-£978
Residential new builds in Barnet £105,000-£161,000
Restoration and refurbishment in Barnet £37,500-£57,500
Roof insulation in Barnet £7,500-£11,500
Underpinning in Barnet £2,250-£3,450
Wall cladding in Barnet £1,125-£1,725
Wall rendering in Barnet £3,750-£5,750
Demolition in Barnet £2,440-£3,660
Roof room in Barnet £15,000-£23,000
Shop refurbishment in Barnet £3,750-£5,750
Single storey house extension in Barnet £21,600-£37,400
Soundproofing in Barnet £900-£1,380
Driveway repair in Barnet £607-£51,140
Garden room in Barnet £6,400-£9,600
External wall insulation in Barnet £6,000-£15,000

Related Builder searches in Barnet

Builder FAQs

Do I need planning permission for external wall insulation?

If you want to install an external wall, it is only wise to consider whether or not a planning permission is required in order to avoid a hefty fine. In a great kudos to the government and a welcome relief to home and property owners, the installation of external wall insulation is seen as an “improvement to the house and not an “extension or an “enlargement. Ultimately, this implies that external wall insulation fitting is to be done under permitted development and a planning application may not be required. However, like many other regulations, there are also exceptions to this rule and the main one is if the activity changes the appearance of your property. Properties such as a listed building having tighter regulations may pose some issues. As a result, we’d advise you to consult your local authority to ensure that there’s no fast rule to this topic before commencement of the external wall insulation project.

At the moment, according to the Government Building Regulations, the surface of the entire wall is to be improved to existing standards if the area to be insulated exceeds 25 percent of the wall. In normal situations this is usually the typical case, however to prevent avoidable fines and other possible punishments, it is always best to reach to your local authority and check out the rules guiding external wall insulation in your constituency. Furthermore, since external wall insulation is not a task that’s recommended to be done by yourself, you can also ask the professional external wall insulation fitting company for the applying rules before proceeding. As a good professional, the company should have a better knowledge of the rules and regulation guiding its activities.

How good is external wall insulation?

External Wall Insulation (EWI) is the act of insulating a home by fitting insulation to the exterior parts of the building which in turn improves thermal performance, cuts energy consumption ( savings on energy bill) and also adds to the home’s visual appeal. The systems are built in multiple layers, with the insulation board offering a plethora of options with each being suitable to varying projects and their needs. Installing an external wall insulation comes with a variety of benefits, let’s have a look!

• Thermal Performance Improvement

With EWI, the thermal inertia of the walls are greatly enhanced while also restricting the loss of heat. Ultimately, this lowers heating costs, enhances the comfort of indoor thermal and also reduces CO2 pollution.

• Eliminates Noise Pollution

When the noise levels are high, it can have a bad impact on our overall well being. A great way to reduce the disturbances from the outside like traffic noise is by fitting an External Wall Installation system.

• More Comfortable Living Space

Do you know the damp in homes can contribute to respiratory problems? A properly insulated home will greatly limit the impact of condensation by combating the damp issues. As a result, you can always expect your house to be cosy and comfy irrespective of the season. A cooler summer and warmer spring is guaranteed with EWI.

• Enhances The Property’s Visual Appeal

Looking for an excuse to rejuvenate your home’s aesthetic appeal? Well, you can as well try out adding an EWI system. There are a plethora of unique colours and styles you can pick from to beautify your home effortlessly.

• Adds Value To Property

An insulated home will generally cost more than an uninsulated one at the time of resale. Potential home buyers are more interested in the acquisition of a home with an EWI system due to its various benefits - and a higher demand can only imply a higher price!

How to find a builder to refurbish my house?

After making the decision to refurbish your home or property, the next obvious step is finding the right builder to get the job done. The process of getting a good and reliable builder can be a very tricky one especially when you don’t plan ahead. And in truth, the outcome of your house refurbishment project can only be as good as the contractor your hire. Consequently, finding the perfect builder for your task should be a top priority to get the best return on investment. Here are a few sources that will put you in the right direction to finding a reliable home refurbishment company.

✓ Friends, Relatives & Neighbours

If you have a friend, relative or neighbour that have recently completed a home refurbishment project, you can go for a visit to check out the work done. If you’re pleased with the work, you can proceed to ask about the work ethics of the builder and get the contact if satisfied.

✓ Internet

With the rapid rise of online technology, there’s hardly a service you can’t find on the internet. Websites like HomeAdvisor have been helping people find their desired service providers with relative ease for so long. To get the right building contractor online, it’s advisable to check reviews as well as testimonials before moving forward. Nowadays, you’re most likely going to find so many positive online reviews as some businesses now go to the extent of dubiously writing good reviews for their companies. As a result, it’s recommended to pay closer attention to the negative reviews and check if it’s something you can cope with before hiring a contractor.

✓ Store Contact Lists

You’ll discover a long list of building contractors on several stores trading building materials. These builders may not be affiliated with the store owners, but many stores see it as their responsibility to point you in the right direction so that the building materials acquired from them can be put to good use.

What types of work does a builder do?

Any residential building work requires a general builder. The term Residential building work means any work which is involved in building a house or changing or adding to a home. It also comprises of mending, refurbishing, ornamenting or applying shielding treatment to home. A dwelling is defined as a building or a part where people live. This might include an apartment, house or a townhouse.

Here is a list of some of the works that require a building licence:

• construction of a garage, carport or a shed

• renovation for bathroom, kitchen or laundry

• structural landscaping and building swimming pools

• construction of conservatories and atriums

• house lifting for example, raising the height of an existing structure permanently

• removing and resitting dwellings

• steam rooms and saunas.

General building contracts might also involve work that needs a specialist. These works can be appropriately subcontracted. However, this work must be carried out by the container of a permitted contractor licence or competent administrator certificate in that specialist category.

There are a number of different categories of licences that are available depending on whether you want to oversee the work or have an agreement with another party. When you have a contractor licence, you will have the option of submitting a contact to bid on the work. You can only do the categories of work designated on your licence card. Contractor licences can be allotted to people and businesses and partnerships.

With a certificate of a qualified supervisor, you will be able to supervise the type of work specified in the certificate. Such certificates are only issued to individuals and do not allow you to contract for work.

The licence of an endorsed contractor is issued to those individuals who have applied for a contractor licence but also possess the necessary qualifications and experience to become a qualified supervisor.

how much loft insulation do I need?

Over the years, more and more home and property owners are beginning to realize the huge benefits that can be derived from loft insulation being a worthwhile investment. It’s quite worrisome the way in which energy bills have soared over the past 10 years and loft insulation is a considerable affordable energy efficiency measure that can go a long way to help increase your home’s energy savings.

 

As far back as the 1980’s, the standard when it comes to insulation thickness was 25 mm to 50 mm which was, at the time, considered to be sufficient. However, building regulations have changed the norm that now states that a new build needs to possess 270 mm of insulation in the loft in order to achieve the required u-value of less than 0.16/m2k based on the standard rock wool or sheep wool insulation.

 

Generally with loft insulation, there’s a law of depreciating returns which implies that the first couple of insulation centimetres will save you many times the cost of the installation, however an extra layer or centimetre is going to add less value to the point where it’ll no longer be wise or worthwhile to add any further centimetre. Therefore, with cheaper energy prices 30 years back, that additional couple of centimetres was not just worthwhile, but with the recent alarming rises in costs of fuel, that additional £10 savings per year has all of sudden changed to £30 which makes it become a lot more attractive.

 

If you already have 270 mm of loft insulation, regardless of the material you’re looking to add you’re most likely not going to benefit from a top up. The cost of the materials and installation will definitely be too high for the couple of pounds it’ll save you per year.

How much does a builder cost?

With the prices of buying a house skyrocketing, many of us are tempted to building our own house. This is sometimes an excellent choice, but you will first need to understand the costs of building a house from scratch. As per a general estimate, the cost of self-build ranges between £300 per m2 to £3,000 per m2.

As you can see, this is quite a variation in price from lowest to highest. Location is a prime factor in determining the costs. Building a house in London and the South is more expensive compared to other regions. Aside from location, several other factors make up the price.

Self-manage with subcontractors

You hire professionals directly like builders and carpenters. You also buy all the materials yourself allowing you to get the best prices.

Hiring a main contractor with other subcontractors

You will first need a main contractor who will help to create the watertight structure for your house. For the rest of the work, try hiring out subcontractors. Make sure that you buy all the materials yourself to get the best price.

External cladding materials

If you are looking to install other external material other than brick, you will also need to factor in the cost for the same.

Here are some example prices:

• Render on blockwork costs around £25 per m²

• Timber cladding is around £25 per m²

• Hand¬made all-weather tiling costs around £54 per m²

• Rubble walling or flint is around £90 per m²

• Reconstituted stone costs about £48 per m²

• Natural stone is about £75 per m²

Make sure to include these costs when coming up with the estimate.

Roofing materials

Non-standard roofing materials tend to add more to the cost and therefore you will also need to account in for this factor.

Here are some examples:

Welsh slate – £60 per m²

Second-hand slates – £35 per m²

Handmade clay tiles – £65 per m²

Reed thatch – £80/m²

If you choose to add any unique material to your roofing, be sure that you remember to factor in its cost.

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 to dot and dab plasterboard?

How To Dot And Dab A Plasterboard

If you want a fast and simple way to achieve a smooth and sturdy wall which is decoration-ready, then dot and dab plasterboard is the way to go! It’s a relative simple process but can also be a bit challenging. Therefore, if you lack the necessary training or experience, hiring a professional would be a great step to protect your investment and guarantee the best results. Here, we’ll provide you with a deep insight into the plasterboard’s dot and dab procedures. Let’s have a look!

• At the thickness of the board with the adhesive, mark the ceiling and floor as well as the wall to indicate the centre of each board.

• Ensure the wall’s height is 15mm more than the plasterboard

• Make a mixture of the adhesive and achieve a thick consistency. Apply a consistent layer of the mixture around the wall’s perimeter, edge of the ceiling and any other openings with the use of a trowel.

• Select dabs that are about 250mm long and 50mm to 75mm wide and apply the adhesive in them. Make use of 3 vertical rows for individual boards. Also ensure to apply, at skirting level, a band of adhesive.

• Position the board’s reverse side against the dabs, and laying against the packers. Then make the board align with the ceiling and floor marks with the help of a straight edge.

• Raise the board till its tight against the ceiling with a board lifter. Once done, use the plasterboard to wedge the board into place before you remove the board lifter.

• Repeat the same process for the remaining parts of the room. Once completed, make sure the adhesive is set before you remove the boards.

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