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Verified Pro

Essex Loft Extensions

0 review(s)
Offers services in BARNES
Essex Loft Extensions was founded by a team of experienced local builders with a shared passion for residential constructi...
Verified Pro
Rankins Roofing & Building are a family established business with over 30 years in the building/roofing industry. We pride...
Verified ProOver 10 Reviews

CRS Contractors

19 review(s)
Offers services in BARNES
we Are a family run business with over 30 years experience built on reputation Our services include all types of roofing...
Verified Pro

The Driveway Studio

1 review(s)
Offers services in BARNES
The Driveway Studio Ltd is your local specialist in resin driveways, tarmac, block paving, patio slabs, gravel driveways, ...
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Osolo

0 review(s)
Offers services in BARNES
Experience the Exceptional We are a reliable building company delivering high-quality workmanship across all aspects of...
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Coastal Prime

0 review(s)
Offers services in BARNES
Coastal Prime Ltd provides expert home insulation services across the UK, helping homeowners enhance energy efficiency and...

Recent Builder Enquiries

13 Oct

Driveway Repair

London - SW13

Enquiry from: Joel K

Start Date: Immediate

repair windows on ground floor flat in london sw13 are you the property owner: owner of the property property type: other

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17 Sep

Building work | Wall Rendering

London - SW13

Enquiry from: Colin W

Start Date: Immediate

strip back pebble dash and smooth render front, side and rear of semi detached house in preparation for new windows. realistically looking at spring 22 now. are you the property owner: owner of the p...

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28 Mar

Building work | General

London - SW13

Enquiry from: John S

Start Date: 1 to 3 months

customer made an enquiry for building maintenance and confirmed on the quotatis site they would like quotes from a builder.mr lives in the london area and would like a call to discuss options.see belo...

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29 Feb

Conversion | Loft

London - SW13

Enquiry from: SOUMYA N

Start Date: Immediate

loft conversion quotes needed Are you the property owner: Owner of the property Property Type: Terrace What are you looking to convert the space into: Bedroom/s Are you looking to have stairs: No Do y...

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17 Sep

House Extensions

London - SW13

Enquiry from: Jamie F

Start Date: Immediate

Are you the property owner: Owner of the property Property Type: Terrace Do you have planning permission: No Do you have plans drawn up: No Do you require Plumbing Work: Yes Do you require Electrical ...

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09 Sep

House Extensions

London - SW13

Enquiry from: Jamie F

Start Date: Immediate

Are you the property owner: Owner of the property Property Type: Terrace Do you have planning permission: No Do you have plans drawn up: No Do you require Plumbing Work: Yes Do you require Electrical ...

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09 Sep

House Extensions | Single Storey

London - SW13

Enquiry from: Jamie F

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: Terrace Looking For: Sin...

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18 May

House Extensions

London - SW13

Enquiry from: Alice L

Start Date: Immediate

rear extension and kitchen

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10 May

House Extensions

London - SW13

Enquiry from: Ivan L

Start Date: 3+ months

Side return extension. Approx. 10sqm in size. There's already a side return done, but not fully opened up, so I guess it's knock down internal wall and put in structural beams, plus flooring, wall pai...

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09 May

House Extensions | Single Storey

London - SW13

Enquiry from: Ivan 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: Semi detached Looking Fo...

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15 Mar

Conversion | Loft

London - SW13

Enquiry from: Mansoor M

Start Date: Immediate

Increase the size of an existing loft. The architectural plans are available.

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13 Mar

Building work | General

London - SW13

Enquiry from: Andrew D

Start Date: Less than one month

New Gutter Installation - box gutter to run between along adjoining side returns. c3m double gutter extending to an additional 3m single box gutter. Homeowner Cast iron Supplied and fitted Pleas...

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How much do Builder services cost?

How much do Builders cost? Prices for Builders in 2026 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 Barnes is:

£24,923

Builder job Builder cost in 2026
Garage conversion in Barnes £9,834-£19,634
Loft conversion in Barnes £29,688-£64,688
House extensions in Barnes £34,572-£91,143
Loft insulation in Barnes £350-£5,345
Upvc or wood porch in Barnes £2,625-£4,025
Barn conversions in Barnes £112,500-£172,500
Basement renovation in Barnes £30,000-£46,000
Bedroom fitting in Barnes £1,500-£2,300
Bricklayers in Barnes £300-£460
Cavity wall insulation in Barnes £325-£5,410
Commercial new builds in Barnes £105,000-£161,000
Conservatory base in Barnes £675-£1,035
Building maintenance in Barnes £1,400-£4,225
Building insurance works in Barnes £1,400-£4,225
Pebble dashed walls in Barnes £1,275-£7,100
Plasterboard dry lining in Barnes £638-£978
Residential new builds in Barnes £105,000-£161,000
Restoration and refurbishment in Barnes £37,500-£57,500
Roof insulation in Barnes £3,875-£10,750
Underpinning in Barnes £1,400-£4,225
Wall cladding in Barnes £1,125-£1,725
Wall rendering in Barnes £3,750-£5,750
Cero insulation in Barnes £250-£10,000
Insulation scheme (hhrco) in Barnes £250-£10,000
Demolition in Barnes £2,440-£3,660
Roof room in Barnes £15,000-£23,000
Shop refurbishment in Barnes £3,750-£5,750
Single storey house extension in Barnes £30,800-£61,200
Soundproofing in Barnes £575-£25,690
Driveway repair in Barnes £1,520-£2,280
Garden room in Barnes £6,400-£9,600
External wall insulation in Barnes £3,125-£12,500

Related Builder searches in Barnes

Builder FAQs

Why has my driveway sunk?

Driveways usually sink because they haven’t been laid properly. They may not have been dug deep enough, or the installer might not have used the right materials. This will need to be corrected at the earliest opportunity, although in extreme cases, the driveway may need to be completly be relaid.

how much does a garage conversion cost?

Are you looking to create some more space in your home with your garage being almost dispensable? If yes, then considering a garage conversion project may be the way to go. Unlike many other extension options, garage conversion does not take up an additional space as it only changes the current structure of the garage. As a result, the cost of completing a garage conversion project can be relatively attractive when compared to other space creating alternatives. So exactly how much would a garage conversion project cost? Well, there’s no precise answer for this as several influencing factors come to play. However, in this guide we’ll give you a rough idea of the average costs that you’re likely going to encounter. Some of the factors that can influence your budget dramatically includes the following:

• The size of the conversion. The larger the size of the garage per square feet, the more cost you’ll have to expend.

• The type of your property - listed buildings are usually more expensive.

• Your location in the UK. If you stay in London where there’s a higher demand, you’ll most likely pay more.

• You’re likely to pay more if a specialist knowledge is required.

• The amount of glazing to be installed

• Quality of the materials to be incorporated.

• Quality of the professional to carry out the installation service.

On average, when it comes to garage conversion projects, you’re likely to pay the following depending on the per square metre given:

• A single garage of about 15 square metre will cost within the range of £6,000 to £15,000.

• A double garage of about 30 square metre will cost within the range of £12,000 to £30,000.

What is the ratio of sand and cement for bricklaying?

When it comes to laying of bricks, it is essential to get the right mortar mix. It is vital, be it for construction or maintenance projects, so far mortar is required. There are several materials incorporated in getting mortar which includes both cement and sharp sand, soft sand or plasterer’s sand and lots more. Here, we are going to look at the right ratio for cement and sand mix in bricklaying.

Cement include ingredients such as iron, aluminium, as well as silicon and it is mainly used for mortars like aerated cement mortar, Portland cement mortar and gauged mortar. Sand, on the other hand, comes in different forms such as sharp sand, soft sand and plasterer’s sand. The sharp sand consists of a larger grain size than the others and is usually incorporated in the construction areas that requires more strength as well as flexibility. Soft sand is the most common one used in mortar and it’s also referred to as bricklayers’ sand. These are used to make all types of mortar. Finally the plasterer’s sand which neither has the sharp sand’s coarseness nor the fineness of the soft sand, but can also be used for any form of mortar.

Cement and sand mortar is used for a plethora of bricklaying jobs serving as a glue for bricks, walls and pillars, while also repairing or maintaining old listed buildings. The preferred ratio here is 1:3 to 1:5 of cement and building sand. Meanwhile, to get a sand cement mix, essential materials that are required includes water, soft building sand as well as cement. However, you must also note that a sand and cement mortar is not used for structural projects, rather a concrete ratio is used.

how much value does a garage conversion add?

It’s a fact that a garage conversion can go a long way to add a resale value to a home or property. Therefore, in the event whereby your home already has parking facilities in place you can put into consideration converting your garage into a habitable space which will add to the sales price of the house by adding an extra room or increasing the floor space. So exactly how much does a garage conversion add to your home’s resale value?

Garage conversions can be seen as a cost effective means of adding more space to your house. However, not only does it add space, but can also add up to 20 percent to the value of your home. It’s also a way of adding an extra living space to your home that’s not under strict planning complication unlike the alternatives. Generally, if your garage happens to be connected to your house, the cost of converting it to another room should between £10,000 to £20,000. As a home owner, converting your garage into an extra room can help increase the value of your home by up to £45,000. And if you’re to comply with the set rules under permitted development rights, you may not even require to submit a planning application.

In the event whereby your garage is detached from your house or perhaps you live in a flat ( or maisonette) or a listed building , you’ll need to apply to the local authority before commencing your project. It’s always wise to check if there aren’t any planning conditions attached to your home or property.

What are the benefits of cladding or rendering?

The main reason that people use cladding or rendering on their property is the aesthetic benefit. These materials can really boost the appearance of a home. Cladding and rendering can also increase the thermal performance of a property. Speak to a specialist to find out whether your property will benefit.

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 to convert a basement into an apartment?

In some cases, it’s possible to convert a basement into an apartment. This can be a great way to incorporate an additional dwelling into your property and increase its value. However, converting a basement into an apartment can be quite expensive and time-consuming.

As with any type of dwelling, you’ll need to think about basic things like access, damp proofing, ventilation, insulation, heating, electrics, plumbing, lighting and décor. If you’re planning on extending your basement, then you’ll also need to ensure that your property is sufficiently supported.

It’s a good idea to consult a professional, like a basement conversion building specialist, to find out how feasible your project is before you go ahead with it.

how much do roof rooms cost?

How Much Do Roof Rooms Cost?

The price of your roof room may vary depending on your location within the country. Other factors that can also play a key role in determining the price of a roof room includes the conversion’s type as well as the legal and technical issues it’s currently facing. Usually, the cost of roof rooms will range between £1,200 to £2,000 per square metre. The differences in the price per square metre is influenced by the size of the alterations to the roof, the type of roof room to be constructed, the access, location as well as the finishing type.

• DORMER LOFT CONVERSION.

Here, one of the slopes of a pitched roof is substituted for a box-shaped structure. The outcome is a flat roof space which enables the fitting of full sized windows as well as the incorporation of several appliances. This is quite expensive as it involves a total rebuilding of one roof pitch alongside the complete internal works that are associated. The average cost of a standard dormer loft project will range between £25,000 to £50,000.

• HIP TO GABLE LOFT CONVERSION

Here a vertical brick wall is used to substitute the roof’s slope at the ending part of the terrace on detached buildings. The average cost of this type of roof room will range between £32,000 to £60,000.

• ROOFLIGHT LOFT CONVERSION

This basically involves fitting rooflight windows in the roof. Other improvements include flooring, plasterboarding, strengthening of the existing floor, as well as installation of rooflights. The average cost of this type of roof room will range between £15,000 to £25,000.

• MANSARD LOFT EXTENSION

This roof room can create an extra storey on top of an existing building as it makes a space featuring two or four external walls that are a bit sloped. The average cost of this type of roof room will range between £40,000 to £70,000.

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