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Verified ProOver 50 Reviews

JM Fencing and Landscaping

89 review(s)
Offers services in WESTMINSTER
Mitchell Landscaping have been established for 10 years, offering quality advice and services in landscaping, Gardening a...
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Haas Home Extensions Group

0 review(s)
Offers services in WESTMINSTER
Welcome to Haas Extension Group, where we take pride in being the premier suppliers, installers, and design consultants of...
Verified ProOver 10 Reviews

Stoneartuk

14 review(s)
Offers services in WESTMINSTER
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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Bentham Builders

0 review(s)
Offers services in WESTMINSTER
At Bentham Builders, we specialize in high-quality roofing services as well as general building work across North and West...

Recent Builder Enquiries

06 May

House Extensions | Single Storey

London - NW6

Enquiry from: Noam G

Start Date: Immediate

customer in the london 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:cu...

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06 May

House Extensions

London - NW6

Enquiry from: Noam G

Start Date: Immediate

hi, i'm in the process of buying a house, which needs a fair bit of work. this would include converting an attached garage into a bedroom, knocking down a couple of walls, doing a small extension int...

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15 Apr

House Extensions

London - SW19

Enquiry from: Intisar C

Start Date: Immediate

customer in london areas is looking to do a couple of projects at the moment, and would like quotes for house extension.confirmed interest via sms and email at 15/04/2025 17:16.please call to arrange ...

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09 Apr

House Extensions

London - SW16

Enquiry from: Andrea C

Start Date: Immediate

Customer is looking for House Extension quotes. They are unsure of options so would like to discuss. Confirmed interest via SMS/ Customer lives in London area Please call to arrange an appointment

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21 Feb

Building work | Wall Rendering

London - SW19

Enquiry from: Briony Q

Start Date: Immediate

Pebbledash on side and back of 1920’s house. It is not original to the property designed by John Brocklesby.

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20 Jan

Building work | Bricklaying

London - SW17

Enquiry from: Akhtar S

Start Date: Immediate

i'm in need of a brick layer, what are charges for block inner wall and brick on the outer wall. new extension at the rear of house 6 x 4 metres. 2 x 6m walls and 1 x 4m. are you the property owner:...

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17 Jan

Insulation | Loft / Roof

London - SW17

Enquiry from: Rohan S

Start Date: Immediate

roof insulation needed

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17 Jan

Insulation | External Wall

London - SW17

Enquiry from: Rohan S

Start Date: Immediate

Roof insulation, Window C glazing, External insulation

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09 Jan

House Extensions

London - NW2

Enquiry from: Naciye H

Start Date: Immediate

Customer made an enquiry for House Extension via one of our websites. Looking at various options they would like to discuss directly Confirmed interest Please call to discuss and arrange appointment t...

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07 Oct

Conversion | Loft

London - NW4

Enquiry from: Alireza A

Start Date: Immediate

I have a 30-square-meter loft with decent ceiling height that I want to convert into a one-bedroom, one-bathroom layout. I'd like to know the estimated cost, the materials required, and the expected t...

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07 Sep

Building work | Refurbishment

London - NW9

Enquiry from: Ramniklal D

Start Date: Immediate

demolish shed and rebuild guestroom in rear garden.

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12 Aug

Insulation | Cavity Wall

London - W10

Enquiry from: Eva G

Start Date: Immediate

epc is d (60) interested in getting a quote on wall insulation on how much it would be to improve insulation are you the property owner: relative of owner property type: other how many bedrooms do yo...

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31 Jul

Building work | Refurbishment

London - SW2

Enquiry from: Freya P

Start Date: Immediate

Pointwork & Guttering - back of building. Victorian 2 story flat flat, probably no scaffolding required.

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02 Jul

Conversion | Loft

London - SW4

Enquiry from: James C

Start Date: Immediate

converting an existing atic extension into a dormer extension with a terrace

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15 Jun

Building work | General

London - SW19

Enquiry from: Mehul M

Start Date: Immediate

We're looking for someone to replace a bay window and a bedroom window. Both are currently Sash windows and they're large as we have tall ceilings. We're on the ground floor.

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30 May

Insulation | Loft / Roof

London - W4

Enquiry from: George J

Start Date: Immediate

270mm loft insulation approx ***m across 2 lofts

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30 Apr

Building work | General

London - NW1

Enquiry from: Reeshma J

Start Date: Immediate

Intercom system for 12 flats - very cost effective

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23 Apr

Extension | Garden Room

London - SW18

Enquiry from: Nancy A

Start Date: Immediate

UPVC French door 1500x2080 2 windows 600x700

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15 Apr

Building work | Refurbishment

London - SW15

Enquiry from: Abdul R

Start Date: Immediate

Flat suffered water damage because of water leak from upstairs neighbours - plaster ceilings, plastered and wall papers, timber flooring, carpets, kitchen floor tiles etc. need urgent quotation for ap...

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27 Mar

Driveway Repair

London - SW20

Enquiry from: Nigel H

Start Date: Immediate

existing driveway has many cracks and manhole covers need re-setting

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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 Westminster is:

£26,828

Builder job Builder cost in 2025
Garage conversion in Westminster £9,750-£18,450
Loft conversion in Westminster £31,250-£67,917
House extensions in Westminster £35,334-£96,334
Loft insulation in Westminster £450-£690
Upvc or wood porch in Westminster £2,625-£4,025
Barn conversions in Westminster £112,500-£172,500
Basement renovation in Westminster £30,000-£46,000
Bedroom fitting in Westminster £1,500-£2,300
Bricklayers in Westminster £300-£460
Cavity wall insulation in Westminster £400-£820
Commercial new builds in Westminster £105,000-£161,000
Conservatory base in Westminster £675-£1,035
Building maintenance in Westminster £2,250-£3,450
Building insurance works in Westminster £2,250-£3,450
Pebble dashed walls in Westminster £2,000-£9,200
Plasterboard dry lining in Westminster £638-£978
Residential new builds in Westminster £105,000-£161,000
Restoration and refurbishment in Westminster £37,500-£57,500
Roof insulation in Westminster £7,500-£11,500
Underpinning in Westminster £2,250-£3,450
Wall cladding in Westminster £1,125-£1,725
Wall rendering in Westminster £3,750-£5,750
Demolition in Westminster £2,440-£3,660
Roof room in Westminster £15,000-£23,000
Shop refurbishment in Westminster £3,750-£5,750
Single storey house extension in Westminster £31,067-£61,600
Soundproofing in Westminster £900-£1,380
Driveway repair in Westminster £607-£51,140
Garden room in Westminster £6,400-£9,600
External wall insulation in Westminster £6,000-£15,000

Related Builder searches in Westminster

Builder FAQs

Which type of insulation is best?

The best type of insulation for your property will depend on the type of walls and any insulation that’s already present. It’s usually a good idea to have some form of wall insulation as well as loft insulation, as this helps to prevent heat loss in both areas.

how to build a garden room?

With homeowners now a lot more unwilling to move or make any costly extensions due to the uncertainty that lies ahead in the property market of the UK, a garden building which represents a cheaper alternative seems to be the best option available. Not only is it one of the most affordable ways to add space to your home while staying within your budget, but it’s also one of the best ways to add immense value to your property as more and more potential home investors are now seeking properties with an outdoor garden room. They’re the perfect investment for those looking to expand their space without having to carry out huge extension projects which normally consumes both time and money.

Garden rooms are best built by professionals to guarantee the best results. However, if you feel confident enough to undertake the project, then this guide will give you an idea of the process.

✓ Build the foundation. Here you can build the foundation using concrete, but in cases whereby there are root systems closeby then you can make use of low impact screw piles.

✓ Start the construction process with timber frame, SIP panels as well as other modular components and materials

✓ Once you’re done with the construction process, the next course of action will be to develop and position the roof structure on to the top of the newly constructed garden room. Here, you can also decide to use sun pipe and solar heating or PV panels. You can also protect the construction from the elements by making use of cedar cladding.

✓ Doors installation. The best type of doors to use here are draught sealed doors which can also be treated hardwood or powder coated aluminium .

✓ Make the finishing touches here and there and make sure all connections are complete.

How to fit external insulation?

With the title of this blog, do not be deceived into thinking the purpose is to encourage you to install an external insulation by yourself. Even as a competent DIYer, it’s not advisable to buy a couple of materials and start slapping it into the wall hoping for the best outcome. External insulation is by no means a DIY job and without the proper training and experience, it can easily turn out disastrous resulting in loss of time, effort and money in such a valuable project. This blog, however, will give you a great insight on how the installation process works and help maximize knowledge ensuring you do not spend more than necessary.

External Insulation Installation

lRender Test

• This is done to ensure the existing render is good enough for insulation support.

• If positive, the insulation can be applied directly onto it.

• If negative, ensure removal of the old render before fitting the insulation.

lPipework Adjustment & Removal

• Remove all pipework prior to insulation fitting

• Install temporary downpipes to ensure water is not wasted and everything continue to function normally during the insulation fitting process.

lWindow Protection

• Protect the window with a protective layer or film.

lStarter Track Fitting

• Determine level you want the insulation to start (height).

• Fit the aluminium start track or carrier tray at the identified level.

lInsulation Boards Fitting

• Apply a layer of adhesive to the board and glue them to the wall in a staggered pattern.

• Cut to fit round all obstructions and windows.

• File off the edge of the board where necessary using a rasp upon successful fitting of the boards

lMechanical Fixing Inclusion

• Hammer around 10 fixings per square metre into the board.

• This is to secure the insulation boards.

lBeading Fitting

• Add corner beads and stop beads to ensure the insulation is secure and to prevent it from making contact with other materials.

lReinforcing Mesh & Render Addition

• Apply two layers of strengthening properties and between the two layers of render, include a fibre glass mesh.

lPrimer Application

• Paint on the primer

lFinal Render Application

• Choose your most preferred texture and colour as this will be the last coating of the installation process.

lPipework Re-installation

• Re-install all detached pipework at the start of the installation process.

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.

Will my patio need a lot of maintenance?

Patios do not require lots of maintenance. They will only need occasional cleaning to make sure that the material keeps its original appearance. It's always best to clean your patio with a pressure washer and occasionally tap each slab or brick just to check the sand underneath hasn't washed away.

how deep do footings need to be for a porch?

No matter how big or small a building is, it can only be as good as it’s foundation - and that’s a fact! It all starts from the footing and when it isn’t deep enough, unlike badly installed gutters or gapped hardwood flooring, can make the whole building collapse to the ground. Just like any code recommendations, the depth of the footings of your porch is a parameter that must be complied with and adjusted to suit your local code requirements.

As a rule of thumb, you should always dig below the frost line when excavating your footings. At this depth level, the moisture present in the soil will be frozen. Ultimately, this will help the ground to act as a barrier to insulate the soil below the footing from freezing during the cold months. As a result, in regions where the weather is almost always very cold the depth of your footings is expected to be at least 48 inches. But in areas featuring a warm climate, you may be allowed to install your footings on grade.

In addition, it’s compulsory that your footings must be installed at a minimum depth of 12 inches below unsettled soil. However, if you’re constructing the structure into a steep hill’s side or by the side of a retaining wall, it’s required that you maintain the least distance to grade both vertically and laterally. In the event whereby you need to achieve a good lateral barrier, you’ll need to have your foundation dug a lot deeper compared to if it’s on a flat surface. For a more accurate and updated information, you can consult your local building inspection department to get familiar with the requirements in your area.

how much to renovate a house?

When it comes to house renovation costs, nothing is certain. As a rule of thumb, you should always expect the unexpected. Unforeseen circumstances (mostly unfavourable) can crop up from anywhere, at any time, greatly affecting the cost of the project. However, if you’ve completed proper planning and done your due diligence on your property before commencement, there’s absolutely no reason why you can’t put the works on budget.

The cost of a house renovation project depends on a lot of variables. These variables include the type of property you’re undertaking as well as the amount and complexity of the entire project. What’s more? Whether you decide to do some of the work yourself or wish to hire quality tradespeople to cover the entire project will also tell on the cost of the home renovation.

In the event whereby you wish to completely gut your property and begin from square one, here are some of the cost you’re most likely going to incur:

✓ Planning applications and building controls

✓ Architect’s design and specifications

✓ Contractors and build costs

✓ Snags as well as unforeseen problems

What will be the biggest cost, which will be determined by the amount of work you need done, is most likely going to be the structural and building work, which can reach up to tens of thousands of pounds.

Asides from material and labour, the administrative costs is another important cost you’ll need to factor in. The first thing here is usually insurance, this is because all regular building insurance policies does not cover large scale renovation projects. So if what you’re planning is a huge structural change to your property, then it’s more likely that it won’t be covered by your buildings insurance policy. In this event, you’ll have to take out a specialist renovation insurance.

What kinds of loft conversion are there?

There’s a huge range of different types of loft conversions. The most common are dormer and skylight or Velux conversions. There are also hip to gable and mansard conversions. The type of loft conversion that’s most suitable for your property will depend on the style of roof and the size of your loft.

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