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Verified ProOver 20 Reviews

CRS Contractors

20 review(s)
Offers services in WELWYN GARDEN CITY
we Are a family run business with over 30 years experience built on reputation Our services include all types of roofing...
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Loft & Build

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

0 review(s)
Offers services in WELWYN GARDEN CITY
Coastal Prime Ltd provides expert home insulation services across the UK, helping homeowners enhance energy efficiency and...
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Local Roofing Consultants

0 review(s)
Offers services in WELWYN GARDEN CITY
Ring for free survey our quotes on budget on time .we offer insurance backed guarantees members of confederation of roofin...
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Home Counties Driveways & Patios

13 review(s)
Offers services in WELWYN GARDEN CITY
Welcome to Home Counties, our team handle projects large and small from residential to commercial. Our Driveway service...
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Xuvas Group

0 review(s)
Offers services in WELWYN GARDEN CITY
Welcome To Xuvas group ltd Xuvas group is a well established, trustworthy, reliable and professional business based in...

Recent Builder Enquiries

09 Sep

Driveway Repair

Luton - LU3

Enquiry from: Timothy D

Start Date: Immediate

Gangway needs leveling sunk in places

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14 Aug

House Extension

London - N21

Enquiry from: Saeed Y

Start Date: Immediate

Loft conversion side and rear extension

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03 Aug

Building Maintenance

Edgware - HA8

Enquiry from: Donna H

Start Date: Immediate

I need someone who cam remove mould

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28 Jul

Building Maintenance

Potters Bar - EN6

Enquiry from: Vishal R

Start Date: Immediate

External wall insulation Lead External wall insulation Lead External wall insulation Lead External wall insulation Lead

Repair cracks in walls of from porch caused by extreme heat

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23 Jun

Garden Room

London - N2

Enquiry from: Laurie C

Start Date: 1 to 3 months

I'm looking for a soundproof garden studio to mainly practice and teach drums and percussion (alongside some other less noisy instruments). ideally i'd like it to be around 4 x 4 meters. the bottom of

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04 Jun

House Extension

Luton - LU3

Enquiry from: Saadia K

Start Date: Immediate

2 bedrooms and 1 washroom in loft . Kitchen in ground floor

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01 Jun

Building Maintenance

Enfield - EN3

Enquiry from: Feven H

Start Date: Immediate

Renovation of an old store room. Which I would like to put new door and window. Also concrete floor, plaster wall and paint

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19 May

Restoration & Refurbishment

London - N13

Enquiry from: Cliffe O

Start Date: Immediate

Propose, knocking down load bearing ground floor rear wall

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18 May

Driveway Repair

Barnet - EN5

Enquiry from: Kaveh K

Start Date: Immediate

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19 Mar

Loft Conversion

Hemel Hempstead - HP3

Enquiry from: Surjan S

Start Date: Immediate

Loft conversion- 1 room( 4mts x 5.2 mts) , a bathroom( shower ( 2 mts x2 mts) , toilet and washbasin with storage

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03 Mar

Sound Proofing

Watford - WD19

Enquiry from: Christine A

Start Date: Immediate

To supply and fix 10mm DBX pro acoustic boards directly to party wall sealed with DBX tape followed by 15mm acoustic plasterboard and sealed with acoustic sealant. Wall area 8.17 sq meters no door/wi

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16 Feb

Sound Proofing

Luton - LU3

Enquiry from: Kerry D

Start Date: Immediate

I can hear all the conversation from my downstairs neighbour I require soundproofing the floor if possible?

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10 Dec

Loft & Roof Insulation

Baldock - SG7

Enquiry from: Ken B

Start Date: Immediate

Removal of old boards and fibre insulation - replaced. (address removed) . Contractor cancelled at short notice

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06 Dec

Wall Cladding

Hemel Hempstead - HP3

Enquiry from: Sajida C

Start Date: Immediate

Hallway panelling - 2 flights of stairs, hallway and landing

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24 Nov

Bricklaying

Barnet - EN5

Enquiry from: Padma K

Start Date: Immediate

Air bricks need putting in on outside wall

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05 Nov

Loft Conversion

Luton - LU3

Enquiry from: Navderp S

Start Date: Immediate

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05 Nov

Loft Conversion

St. Albans - AL2

Enquiry from: Iqbal A

Start Date: Immediate

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01 Nov

House Extension

Enfield - EN1

Enquiry from: Sarah F

Start Date: Immediate

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17 May

Loft Conversion

Welwyn Garden City - AL7

Enquiry from: Justine A

Start Date: Immediate

Need plans and builder to convert my loft into a room

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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 Welwyn Garden City is:

£24,945

Builder job Builder cost in 2026
Garage conversion in Welwyn Garden City £9,834-£19,634
Loft conversion in Welwyn Garden City £34,584-£57,917
House extensions in Welwyn Garden City £33,400-£69,600
Loft insulation in Welwyn Garden City £350-£5,345
Upvc or wood porch in Welwyn Garden City £2,625-£4,025
Barn conversions in Welwyn Garden City £112,500-£172,500
Basement renovation in Welwyn Garden City £30,000-£46,000
Bedroom fitting in Welwyn Garden City £1,500-£2,300
Bricklayers in Welwyn Garden City £300-£460
Cavity wall insulation in Welwyn Garden City £325-£5,410
Commercial new builds in Welwyn Garden City £105,000-£161,000
Conservatory base in Welwyn Garden City £675-£1,035
Building maintenance in Welwyn Garden City £2,250-£3,450
Building insurance works in Welwyn Garden City £2,250-£3,450
Pebble dashed walls in Welwyn Garden City £2,000-£9,200
Plasterboard dry lining in Welwyn Garden City £638-£978
Residential new builds in Welwyn Garden City £105,000-£161,000
Restoration and refurbishment in Welwyn Garden City £37,500-£57,500
Roof insulation in Welwyn Garden City £3,875-£10,750
Underpinning in Welwyn Garden City £2,250-£3,450
Wall cladding in Welwyn Garden City £1,125-£1,725
Wall rendering in Welwyn Garden City £3,750-£5,750
Cero insulation in Welwyn Garden City £250-£10,000
Insulation scheme (hhrco) in Welwyn Garden City £250-£10,000
Demolition in Welwyn Garden City £2,440-£3,660
Roof room in Welwyn Garden City £15,000-£23,000
Shop refurbishment in Welwyn Garden City £3,750-£5,750
Single storey house extension in Welwyn Garden City £24,400-£44,934
Soundproofing in Welwyn Garden City £575-£25,690
Driveway repair in Welwyn Garden City £607-£51,140
Garden room in Welwyn Garden City £6,400-£9,600
External wall insulation in Welwyn Garden City £3,125-£12,500

Related Builder searches in Welwyn Garden City

Builder FAQs

is cavity wall insulation a good idea?

Cavity wall insulation is basically the process of installing an insulating material between the two layers of brick making up a cavity wall, either as a retrofit measure or at the time of building. Obviously this is not a choice if you have solid wall, but for those who do possess a cavity wall, it represents an opportunity you may not want to let slide as it is a worthwhile and affordable wall insulation option. Clearly, cavity wall insulation will make your home or property feel warmer, but it also does come with a range of other benefits which is why we’d recommend installing it. In this post, we’re going to look at a number of reasons why having a cavity wall insulation done is a good idea.

  • It’s one of the cheapest energy saving measures that’s available. Not only is cavity wall insulation really effective, but it can also deliver great saving. In other words, it possesses a bigger payback compared to other options. When compared to other types of insulation, you can’t install cavity walls insulation by yourself, however it’s not so expensive to have it installed. The cost of the insulation will be determined by a number of factors such as your location, the company hired and more.
  • It reduces your energy bills. Cavity wall insulation can save you about £100 to £200 on a yearly basis on heating bills. In other words, this is usually able to pay for itself in as little as two years.
  • It reduces your carbon carbon footprint. If your home is heated with gas or electricity like several other homes, producing that energy involves burning fossil fuels which is known to be hazardous for the environment. If the heat generated is now allowed to escape through the walls, that means you’d have to use more to keep up your required temperature. Installation of cavity wall insulation in homes will enable a more efficient usage of the energy which will ultimately cut UK’s carbon usage.
What is a barn conversion?

A barn conversion is where an agricultural building is altered to serve a different purpose. Lots of barns conversion projects involve converting an old barn into one or more homes. However, barns can also be converted into other types of commercial building, like offices.

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.

How to get free external wall insulation?

This is a very great opportunity to not only get free external wall insulation, but also cut down your energy bills depending on the type of property you live in. Generally, to enjoy free external wall insulation you must at least be part of the group receiving one of the benefits listed below and also depends on the amount of money you earn. The benefits include:

• Income based jobseeker’s allowance (JSA)

• Income support

• Income-related employment and support allowance (ESA)

• Tax credits

• Pension credit guarantee credit.

• Universal credit.

There are also other important factors that determines if you can have a free insulation fitted on your property. These includes the place you reside, the carbon level of your home and according to some suppliers, the level of beneficial impact the insulation will have on your home. In order to have a free external wall insulation installed, you must either be the owner of your home or at least obtain the go ahead from your landlord before any external wall insulation activity can be made.

Good news is, if you fit the aforementioned criteria and you’ve already installed an external wall insulation, you just may be entitled to receive a refund for the good job done. However, to really find out if you’re eligible, we’d recommend you get in touch with your supplier directly. Also, the Energy Saving Trust (EST) can direct you to some organizations who can assist you in the determination of your eligibility.

As a home and property owner living in England, you can also check out the Each Home Counts Advice Website which is committed to giving impartial energy efficiency advice.

At the end of the day, if it turns out you happen to be ineligible for a free external wall insulation, you can still go ahead to contact a professional installer for a help at a competitive price to enjoy the several benefits that comes with home insulation.

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 long does a loft conversion take?

If you’re about to carry out a loft conversion project, you’d probably be wondering how long it’ll take to complete the task. Well, you’re not alone! This is one of the most common questions when it comes to loft conversion projects, however, providing a set timeframe for completion of such projects is impossible as all loft conversions vary. There are different factors that can determine the duration of your project. These factors include, the materials to be used, the type of the proposed loft conversion, the kind of staircase you’ll like to have installed, the number of windows included, the number of rooms to be added as well as a number of other influencing factors. As a result of these variables, the milestones and timings provided are only to be taken as guidelines. If you’d really like to have a set date, you can get in touch with a professional for help.

Generally, it’ll take up to 8 weeks to complete a loft conversion project.

✓ The first week activities will include putting up scaffolding, receiving the first materials for the build and creating an opening in the roof to gain access to the loft space.

✓ In the second week, the structure of the roof will be ammended and more support added.

✓ Third week, the floor joists will be fitted, building of the loft conversion will start, completion of the external roof works and commencement of plumbing and electric works.

✓ Fourth week, complete the building, construct the loft floor, fit the roof windows, insulation, ventilation and internal stud walls.

✓ Fifth week, apply plaster and plasterboard to the room walls, create a staircase opening and fit the new staircase.

✓ Sixth week, plaster the staircase area, complete plumbing and electrical works, hang the doors, fit skirting, handrails and bannisters and start decoration.

✓ Seventh week, complete the decoration and clean and wipe out all wastes.

✓ Eight week, complete all the remaining tasks.

does loft insulation cause condensation?

The short and simple answer to this question is yes, loft insulation does cause condensation. Over the years, problems with condensation in loft spaces have become increasingly common. While this may not be harmful in anyway, when the condensation becomes excessive it can lead to more serious issues taking root in your loft like wet rot, dry rot as well as black spot mould. Generally, the best thing to do if you’re concerned about the condensation in your loft space and that it may rapidly become a bigger problem is to get in touch with a damp specialist as soon as possible.

 

Even though insulating your loft space comes with a wide array of benefits like making the top floor rooms warmer, it’s however comes at the cost of making your loft or room space cooler. Condensation in lofts take place primarily due to the humid air making its way through insulation or other gaps into the loft space and touching a cooler surface which in turn results in beads of moisture on the timbers, lintels as well as the underside of the roof. This is why its always a great idea make use of thermal insulation with a vapour barrier that’s installed on the warmer side of the insulating material.

 

Condensation in loft is caused by excess moisture in the air and lack of adequate air ventilation. Here are some top reasons that gives rise to this in the loft:

  • Extra insulation has been installed in the loft leading to a restriction on the natural air circulation in the property.
  • When the storage boxes or other items that has been stockpiled in the loft blocks the roof vents.
  • The release of steam and moist air into the loft space by hot water tanks.
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.

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