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Verified Pro

Haas Home Extensions Group

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

Loft & Build

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

Jassi Builders

2 review(s)
Offers services in KNEBWORTH
Hi Jassi Builders LTD here, I am a specialist in planning, designing and building control services. I make sure that I hav...

Recent Builder Enquiries

02 Oct

Building work | Bricklaying

Knebworth - SG3

Enquiry from: Steve P

Start Date: Immediate

rebuild retaining wall of front drive are you the property owner: owner of the property property type: semi detached how much work would you say needs to be done: medium job do you require the brick...

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13 Sep

Insulation | Loft / Roof

Knebworth - SG3

Enquiry from: Steve H

Start Date: Immediate

I have a 3-bed detached house in Knebworth, with loft insulation of 100mm depth and no cavity wall insulation. The property will be empty on 17th Oct. while I find a new tenant and I am looking to im...

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29 Nov

House Extensions

Knebworth - SG3

Enquiry from: Joanne R

Start Date: Less than one month

Hi, We are in the process ofbuying a property in Knebworth and are looking at prices for a double story extension to the side of the house, we would like to create a master en-suite bedroom upstairs a...

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04 May

Conversion | Loft

Knebworth - SG3

Enquiry from: Chris M

Start Date: Immediate

loft conversion bedroom with ensuite Are you the property owner: Owner of the property Property Type: Detached What are you looking to convert the space into: Bedroom/s Are you looking to have stair...

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02 May

Insulation | Loft / Roof

Knebworth - SG3

Enquiry from: J

Start Date: Immediate

Attic insulation

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22 Jul

Building work | General

Knebworth - SG3

Enquiry from: J

Start Date: Immediate

Home owner Customers description : I have a problem with my soakaway. I am looking for my shared down pipe to be capped and for a new soakaway to be constructed in my back garden. The guttering to th...

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14 Jan

Insulation | Cavity Wall

Knebworth - SG3

Enquiry from: Colin P

Start Date: Immediate

Homeowner Supplied and fitted Please contact to appoint

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06 Jan

Conversion | Loft

Waltham Cross - EN7

Enquiry from: Bukurie H

Start Date: Immediate

customer made an enquiry for loft conversion and confirmed on the local quotes site they would like quotes from a builder.mrs lives in the waltham cross area and would like a call to discuss options.s...

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06 Jan

House Extensions

Waltham Cross - EN7

Enquiry from: Bukurie H

Start Date: Immediate

customer in waltham cross area has requested that we arrange quotes for their house extension project.mrs are considering various options and would like to discuss with a builder directly.please call ...

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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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18 Apr

Conversion | Loft

Radlett - WD7

Enquiry from: Elaine G

Start Date: Immediate

Flat or prefab roof dormer window to existing loft.

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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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21 Oct

Building work | General

Potters Bar - EN6

Enquiry from: Jay S

Start Date: Immediate

Catnic Lintel CG90/100 - 2 GF Beam B2: GF Beam B2: 203X1*** with 300X280X10mm thick MS Plate as spreader 10mm thick Steel plate to be welded along the length at bottom of the beam to cover outer leaf...

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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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18 Sep

Building work | General

Waltham Cross - EN7

Enquiry from: Frank A

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 waltham cross area and would like a call to discuss options.s...

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11 Jun

Conversion | Loft

St. Albans - AL2

Enquiry from: Claudine S

Start Date: Immediate

a dormer hip to gable added to the attic bedroom already in the property are you the property owner: owner of the property property type: terrace what are you looking to convert the space into: other ...

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26 May

Building Work | Porch

Hemel Hempstead - HP1

Enquiry from: Girish K

Start Date: Immediate

Upvc porch and replacing porch area tiles. The current structure includes canopy and needs to create a covered porch

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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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24 Feb

Driveway Repair

Radlett - WD7

Enquiry from: Shivani T

Start Date: Immediate

Potential reconfiguration of driveway but as a minimum, to fix the slabs of the drive.

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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 Knebworth is:

£24,739

Builder job Builder cost in 2025
Garage conversion in Knebworth £9,750-£18,450
Loft conversion in Knebworth £18,750-£28,750
House extensions in Knebworth £29,000-£62,667
Loft insulation in Knebworth £450-£690
Upvc or wood porch in Knebworth £2,625-£4,025
Barn conversions in Knebworth £112,500-£172,500
Basement renovation in Knebworth £30,000-£46,000
Bedroom fitting in Knebworth £1,500-£2,300
Bricklayers in Knebworth £300-£460
Cavity wall insulation in Knebworth £400-£820
Commercial new builds in Knebworth £105,000-£161,000
Conservatory base in Knebworth £675-£1,035
Building maintenance in Knebworth £2,250-£3,450
Building insurance works in Knebworth £2,250-£3,450
Pebble dashed walls in Knebworth £2,000-£9,200
Plasterboard dry lining in Knebworth £638-£978
Residential new builds in Knebworth £105,000-£161,000
Restoration and refurbishment in Knebworth £37,500-£57,500
Roof insulation in Knebworth £7,500-£11,500
Underpinning in Knebworth £2,250-£3,450
Wall cladding in Knebworth £1,125-£1,725
Wall rendering in Knebworth £3,750-£5,750
Demolition in Knebworth £2,440-£3,660
Roof room in Knebworth £15,000-£23,000
Shop refurbishment in Knebworth £3,750-£5,750
Single storey house extension in Knebworth £21,600-£37,400
Soundproofing in Knebworth £900-£1,380
Driveway repair in Knebworth £607-£51,140
Garden room in Knebworth £6,400-£9,600
External wall insulation in Knebworth £6,000-£15,000

Related Builder searches in Knebworth

Builder FAQs

how to repair a pothole in gravel driveways?

How To Repair A Pothole In Gravel Driveways

When the integrity of your gravel driveway is impaired not only does it have a negative impact on the curb appeal of your property, but also makes your driveway a danger zone. If your driveway needs to be repaired, you’d simply have to grab the bull by the horn and get it done - the sooner, the better to avoid the problem getting worse and to have your beautiful gravel driveway back as soon as possible.

The major cause of potholes in driveways is usually water, when it gets trapped beneath the surface of the driveway. Therefore, you may also want to enhance the drainage in the area as part of your repair. The repair process is quite simple for confident do-it-yourselfers, but if otherwise, then calling in a reliable professional will save you some time and extra money that can result from possible errors. So how do you repair gravel driveway potholes?

✓ Prepare the area. This involves removing all forms of debris from the pothole. To achieve this, you can rake, shovel or brush the loose stones, soil and other debris from the pothole.

✓ Fill the pot hole. Make use of a coarse gravel to fill up the pothole to a depth of about 3 inches beneath the driveway’s level. Upon the filling, simply tamp down the coarse gravel using a commercial tamper or any available homemade option. Once done, the final 3 inches to the surface of the gravel driveway should then be filled up with gravel which perfectly matches the colour and texture of the remaining driveway.

✓ Compact the patch. To achieve this in an easy and fast way, simply run your car’s wheel up and down over the repaired spot gently a couple of times. This will be enough to compact the patch and seal the pothole.

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.

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 much does it cost to have loft boarded?

How Much Does It Cost To Have A Loft Boarded?

More often than not, several homeowners fail to realize there’s so much value sitting right under their roof - the loft. When a loft is boarded, there are so many juicy benefits that can be derived. It can be used as a storage room, spare bathroom, home office and several more functions. Therefore, if you really wish to maximize the space under your home’s roof, you’d have to considering boarding it. So how much would it cost to have your loft boarded? Here, you’ll discover the cost of boarding your lofts so you that you can set a budget and start to plan.

The cost of boarding a loft is actually affordable for several individuals, simply because you’re allowed to floor as much or as little as you require. And while you’re up there flooring and fitting the loft boards, you can as well decide to upgrade the insulation of the loft too. This way, you be able to prevent heat from escaping through the roof of the house which helps improve energy efficiency and ultimately, save you some money on heating bills.

If you’d prefer to make it a DIY project, the cost of 18mm chipboard is about £8 to £10 per sheet sized 2400m x 600m. Meanwhile the insulation boards should range between £18 to £22 for a sheet.

For a professional service, you’ll be provided with a quote for both the materials and labour. The amount will be based on the number of boarding required as well as the method selected. For an average storage space needs, flooring size of about 15m2 is suitable. The price for this quantity would be between the range of £50 to £700 for the counter barren method or above £1000 for a more sophisticated method.

how much is loft insulation?

More often than not, several homeowners fail to realize there’s so much value sitting right under their roof - the loft. When a loft is insulated, there are so many juicy benefits that can be derived. It can go a long way to save increase you energy savings and several more functions. Therefore, if you really wish to maximize the space under your home’s roof, you’d have to considering insulating it. So how much would it cost to have your loft insulated? Here, you’ll discover the cost of insulating your lofts so you that you can set a budget and start to plan.

 

The cost of insulating a loft is actually affordable for several individuals, however, this depends on a wide range of factors such as the size of the house as well as the type of insulation being installed. One significant factor is the insulating material that you choose to install. If done properly, you’d be able to prevent heat from escaping through the roof of the house which helps improve energy efficiency and ultimately, save you some money on heating bills.

 

If you’d prefer to make it a DIY project and you go for a blanket insulation it costs about £5 per m2. therefore, this will cost within the range of £100 to about £150 for a small home.

 

For a professional service, you’ll be provided with a quote for both the materials and labour. The amount will be based on the number of insulation required, the company hired, your location as well as the method selected. The price to purchase and install blanket insulation  would be between the range of £300 to £400 depending on the size of your home.

Are there different styles of cladding?

Cladding comes in a range of styles, such as flush, shiplap, and featheredge. Many types of cladding are also available in a variety of colours to suit any property. A cladding specialist will be able to discuss what solution is best for your property and how it works.

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.

what is a porch?

A porch is a small and low structure (with a roof) located at the main entrance of a building or house. It’s typically without a window (although newer variations may come with one) and can either be screened-in or enclosed to prevent unwanted access from insects and extremes in weather. In addition, some homes may have a three-season porch or sun porch. This may be situated by the side of the house and covered by the roof overhang - they’re usually screened in to offer good access all year round.

Generally, porches serve a wide range of purposes. They include:

• Provision of an outdoor living space to relax during the summer months

• It’s an informal extension of the the living room.

• It serves as a great place for social gatherings especially in small towns.

• You can take off your dirty shoes and dry a dripping wet dog before entering into your living room.

• It can be incorporated for relaxation purposes and watching street activities.

• It can serve as a reception area for guests.

• It can also be used for outdoor storage.

Pros & Cons Of A Porch

Pros

• Due to the fact that they’re covered, porches may require little maintenance practices.

• It can go a long way to improves the curb appeal of your property.

• It protects against the extremes of the weather.

• It can be constructed using a wide range of materials.

Cons

• It does not improve the use of the property

• It can be quite expensive to install depending of the material required as well as size of the porch.

• It does not add to the value of the home unlike several other home improvement projects

• It may not be safe to be used by a child or pet.

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