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Verified Pro

Haas Home Extensions Group

0 review(s)
Offers services in WELWYN GARDEN CITY
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 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...
Verified Pro

Jassi Builders

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

Dimension One Kitchens & Bedrooms

0 review(s)
Offers services in WELWYN GARDEN CITY
We are a family run business with an array of experience and knowledge in the kitchen and bedroom industry. We offer the ...

Recent Builder Enquiries

25 Sep

House Extensions

Welwyn Garden City - AL7

Enquiry from: Halima T

Start Date: Immediate

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

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17 Aug

Building Work | Porch

Welwyn Garden City - AL7

Enquiry from: Everjoy K

Start Date: Immediate

i would like a quote for an extension. are you the property owner: tenant (with permission) property type: terrace looking for: porch do you have planning permission: yes do you have plans drawn up: n...

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07 Jun

Insulation | Loft / Roof

Welwyn Garden City - AL7

Enquiry from: Janine H

Start Date: Immediate

loft insulation quote on semi detached house are you the property owner: owner of the property property type: semi detached how many bedrooms do you have: 3-4 do you currently have loft insulationn: y...

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10 Dec

Building work | Wall Rendering

Welwyn Garden - AL8

Enquiry from: Robin B

Start Date: Immediate

Repair of rendered single story house extension wall which was coated with ?Andura in 2019 but which bubbled and split.

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03 Nov

Insulation | Cavity Wall

Welwyn Garden - AL8

Enquiry from: William P

Start Date: Immediate

customer has a insulation project they are looking to have done, specially they want quotes for cavity wall insulation. they are unsure of options so would like to discuss with a builder.confirmed int...

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03 Nov

Insulation | Loft / Roof

Welwyn Garden - AL8

Enquiry from: William P

Start Date: Immediate

hi, i'd like to have my loft/roof insulated its 44 sqm of ceiling joist area. thank you. billy. are you the property owner: owner of the property property type: semi detached how many bedrooms do you...

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18 Sep

Insulation | Cavity Wall

Welwyn Garden - AL8

Enquiry from: Jim W

Start Date: Immediate

customer in welwyn garden areas is looking to do a couple of projects at the moment, and would like quotes for cavity wall insulation.confirmed interest via sms and email at 18/09/2022 15:54.please ca...

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17 Jan

Insulation | Cavity Wall

Welwyn Garden City - AL7

Enquiry from: Peter W

Start Date: Immediate

quote for cavity wall insulation to mid terrace 1950's property. note there is a single storey upvc conservatory to rear. are you the property owner: owner of the property property type: terrace how ...

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06 Jun

Conversion | Loft

Welwyn Garden City - AL7

Enquiry from: David B

Start Date: Immediate

full length dormer and full length velux rear ext cost of both about 8metre are you the property owner: owner of the property property type: semi detached are you looking to have stairs: yes what are ...

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29 May

Conversion | Loft

Welwyn Garden City - AL7

Enquiry from: David B

Start Date: Immediate

full length dormer and full length velux rear ext cost of both about 8metre are you the property owner: owner of the property property type: semi detached are you looking to have stairs: yes what are ...

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23 May

Conversion | Loft

Welwyn Garden City - AL7

Enquiry from: David B

Start Date: Immediate

full length dormer and full length velux rear ext cost of both about 8metre are you the property owner: owner of the property property type: semi detached are you looking to have stairs: yes what are ...

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13 May

Conversion | Loft

Welwyn Garden City - AL7

Enquiry from: David B

Start Date: Immediate

full length dormer and full length velux rear ext cost of both about 8metre are you the property owner: owner of the property property type: semi detached are you looking to have stairs: yes what are ...

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27 Apr

House Extensions

Welwyn Garden City - AL7

Enquiry from: Manuel P

Start Date: Immediate

customer in welwyn garden city areas is looking to do a couple of projects at the moment, and would like quotes for house extension.confirmed interest via email at 27/04/2021 17:59.please call to arra...

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15 Apr

Conversion | Loft

Welwyn Garden City - AL7

Enquiry from: Evi P

Start Date: Immediate

I would like to have a full loft conversation to a bedroom and a bathroom. Curtly the loft is fully boarded.

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11 Apr

Conversion | Loft

Welwyn Garden City - AL7

Enquiry from: Evi P

Start Date: Immediate

looking for a quote and option for loft conversion are you the property owner: owner of the property property type: semi detached what are you looking to convert the space into: bedroom/s are you look...

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01 Apr

Conversion | Loft

Welwyn Garden City - AL7

Enquiry from: Evi P

Start Date: Immediate

looking for a quote and option for loft conversion are you the property owner: owner of the property property type: semi detached what are you looking to convert the space into: bedroom/s are you look...

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16 Mar

Building work | General

Welwyn Garden - AL8

Enquiry from: Christine P

Start Date: Immediate

are you the property owner: owner have you considered getting your windows replaced to match a new conservatory: no other forms: building maintenance agreed to receive quotes for selected products: y...

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06 Nov

Insulation | CERO Free

Welwyn Garden City - AL7

Enquiry from: Mike C

Start Date: Immediate

5 bedroom detached house potentially needs external wall insulated.

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29 Oct

Insulation | Cavity Wall

Welwyn Garden - AL8

Enquiry from: Nick C

Start Date: Immediate

3 Bedroom semi detached house, about to renovated in early 2021 and we're looking for cavity wall insulation for the existing dwelling.

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22 May

Conversion | Loft

Welwyn Garden City - AL7

Enquiry from: Paul L

Start Date: Immediate

customer visited the myloftconversionprices.co.uk site and submitted an enquiry. property type: detached, property owner: owner, looking to convert into: living space, work description: conversion of...

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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 Welwyn Garden City is:

£25,829

Builder job Builder cost in 2025
Garage conversion in Welwyn Garden City £9,750-£18,450
Loft conversion in Welwyn Garden City £39,375-£59,375
House extensions in Welwyn Garden City £34,250-£72,000
Loft insulation in Welwyn Garden City £450-£690
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 £400-£820
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 £7,500-£11,500
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
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 £21,600-£37,400
Soundproofing in Welwyn Garden City £900-£1,380
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 £6,000-£15,000

Related Builder searches in Welwyn Garden City

Builder FAQs

What is a bricklayer?

This is an individual who is trained in the art of working with concrete blocks or bricks, clay bricks as well as other kinds of mortar building materials. In a combination of these materials and good bricklaying skills, a bricklayer can build and repair veneer as well as full brick construction, arches, partitions and other structures.

Contrary to many beliefs, a bricklayer actually does more than laying of bricks. There’s more to being a bricklayer than you can probably think of. A single bricklaying projects requires a wide array of skills. Let’s have a look at these skills!

• Using damp resistant materials to seal foundations.

• Spreading mortar between joints and applying them to serve as a thick layer binding the bricks together in rows.

• Reading and working from specifications as well as plans.

• Working with brick-cutting machines.

• Taking charge and caring for cement blocks or bricks, clay bricks and the likes.

• Construction of scaffolding - subject to possession of some licenses in some states.

A bricklayer mostly works outdoors, in the field and may also work at heights. Depending on the job, a bricklayer can work as part of a team or be in contact with the public. They are mostly recruited by building and construction companies and bricklaying sub contractors. However, they can also set up their own private construction firm or become a self employed tradesperson.

A bricklaying qualification is one of just two construction trades which can continue to become a registered builder. And regardless of the form a bricklaying employment takes, there are certain qualities that makes a really good bricklayer. These includes:

• Ability to work at heights and outdoors

• Enjoy practical work

• Technical aptitude

• Good hand-eye coordination

• Independent and yet a team player too

• Top physical fitness

• Attitude and attendance.

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 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.

how much value does an extension add to your house?

Are you interested in extending your home to create more living space? If yes, then you’d probably want to know how much value it can add to your property in order to compare the building costs to the potential value gain. Well, as long as you know what you’re doing, your house doesn’t necessarily have to be a money pit. So what are your options when talking about home extensions and what’s the associated value to be gained?

• Bathroom Extensions

Although you should have it in mind that bathroom extensions isn’t usually that cheap, but once done, it can increase the value of a standard UK house within the range of £12,000 to £15,000. Meanwhile the finishing cost of a bathroom can range from £2,500 to £7,000.

• Single or Double Storey Extensions

Single storey extensions are always huge when it comes to increasing the value of your home - giving about 4 to 7 percent increase. If it goes that far, then literally nothing beats a full spectrum, double storey extension which can give up to 11 percent increase in the value of a property - equalling about a whooping £33,000 for a standard home in the UK.

• Conservatory Extension

With conservatories becoming more and more popular in the UK due to the weather conditions, several buyers are now including it’s availability as part of the criteria for purchasing a house. Wonder why? This is simply because everyone wants to enjoy their garden all throughout the year. As a result of this high demand, adding this type of extension to your house can go a long way to increase it’s value. However, it’s very important to incorporate high quality materials during construction. With glass conservatories offering, on the average, up to £5,000 increase in value, the cheaper PVC alternative offers much less value and can also deter potential buyers.

can i refurbish a house in conservation area?

Due to the fact that we live in a country (the UK) with so much history as well as architectural beauty, there’s a need to have what’s commonly called “Conservation Area. A Conservation Area is basically an area which is designated by the local authority and is established in order to protect and enhance areas of historical and architectural interest which includes both rural and urban areas. Therefore, when it comes to refurbishment project in a conservation area, there’s usually a lot of things that needs to be put into consideration as well as hurdles to scale in order to make alterations to your property without any interruptions from the law.

In general, all properties in a conservation area have strict regulations governing the outlook of the houses, as this plays a major role in the appearance of the area as a whole. As a result, if you wish to bring down a building, fence, wall or even railing and the likes, you’ll need to obtain prior consent before you proceed. An easy way to go about any refurbishment plan is to to ensure the usage of exactly the same materials that exists in the current house. When you abide by the rules, you’ll be in a more favourable position to acquire the needed prior consent.

The short and simple answer to the question is yes, you can refurbish a house in a conservation area but subject to the approval of the local authority through a planning permission. And when it comes to submitting a planning application for approval, some are aspects will usually be subjected to more intense examinations than the others. Hence, the need to make sure that your refurbishment plans are all friendly in a similar way to the neighbouring buildings and environment.

Should I use concrete or timber footings?

For 2 metre solid fences it’s recommended to use concrete posts to support each panel. For smaller 1 metre fences or for picket fences with gaps between each timber piece you can use timber posts. A fencing contractor will be able to advise you on the best materials from the length and requirements of a new fence.

how to repair sunken concrete driveway?

How To Repair Sunken Concrete Driveway

If you have concrete driveway that’s cracked, uneven and mostly especially sunken, you’d know how distasteful it can be just viewing it on your property. A sunken concrete driveway is most likely caused by rainwater erosion removing the soil under it or a big root under it which as rotted over time. Another possible cause of the sunken concrete is an improperly prepared base which implies that the soil beneath wasn’t fully compact when the concrete was poured on it. Later on the soil beneath will eventually settle and shift below the concrete driveway which weakens the integrity of the entire driveway, making it more vulnerable to cracks, unevenness and sunken.

Two ways in which you can fix this problem includes either demolishing the whole driveway, re-compact the soil underneath and fill with new concrete or repair the entire driveway using an easy process called slabjacking. In this article, we’re going to look at the slabjacking repair process as it’s significantly less expensive than the demolishing approach and will also cause minimal disruption to your lifestyle.

Also referred to as mudjacking or concrete lifting, slabjacking is simply a process used to float your existing concrete back to its original position. If you are not a competent DIYer or lack confidence to pull this off, we’d recommend reach out to a professional for help. If otherwise, then you can practice the slabjacking process given below.

✓ Drill holes through the slab.

✓ Pump grout mixture through the holes. This mixture will spread out beneath he driveway and raise it up.

✓ Lastly, fill the holes and level the concrete driveway surface.in such a way to hide the signs of the repair made.

This is a process that works to efficiently get your driveway back in a top condition relatively quickly.

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.

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