Find a Builder you can trust in St Albans.

Choose from 340 Builders, all rated by people like you.

Over 369 reviews & an average rating of 4.3/5 stars, you'll find the right pro

Choose and shortlist

Use the shortlist button to select up to 4 tradespeople, enter your project details and press send

or

Keen to get on with the job?

Get up to 4 quotes from local Builders near you

View Shortlist
Verified ProOver 50 Reviews

Colt Property Improvement

74 review(s)
Offers services in ST ALBANS
We are a family orientated company established in 1994. Utilising only the best quality materials and a highly skilled wo...
Verified Pro

Haas Home Extensions Group

0 review(s)
Offers services in ST ALBANS
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 ST ALBANS
Hi my name is Martin from stone art uk ltd we are a local run landscaping company within the Pinner area we specialise in ...
Verified ProOver 10 Reviews
Welcome to Home Counties, our team handle projects large and small from residential to commercial. Our Driveway service...
Verified Pro

Loft & Build

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

Recent Builder Enquiries

02 Nov

Conversion | Loft

St. Albans - AL4

Enquiry from: Charmaine M

Start Date: Immediate

We would like to change a current loft velum room into a dormer and remove the chimney breast at the same time.

Post a similar request >

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 ...

Post a similar request >

18 Feb

Building work | General

St. Albans - AL3

Enquiry from: Mal O

Start Date: 3+ months

customer requested quotes for building maintenance from a builder around st. albans. they are considering a couple of projects at the moment.call anytime to arrange appointment to discuss. the informa...

Post a similar request >

18 Feb

Driveway Repair

St. Albans - AL3

Enquiry from: Mal O

Start Date: 3+ months

10m x 10m driveway, currently crazy paving needs repair or consider replacement. resin or block finish are you the property owner: owner of the property property type: detached what level of service...

Post a similar request >

11 Feb

Conversion | Loft

St. Albans - AL4

Enquiry from: Fiona T

Start Date: Immediate

vellux loft conversion to create two rooms and possibly one ensuite.length of loft is 10x5m are you the property owner: owner of the property property type: detached what are you looking to convert t...

Post a similar request >

07 Feb

Building work | Wall Rendering

St. Albans - AL1

Enquiry from: Tom H

Start Date: Immediate

Quite for Check and repair external rendering. Damp course on ground floor

Post a similar request >

02 Feb

Building work | Wall Rendering

St. Albans - AL4

Enquiry from: Katherine T

Start Date: Immediate

Following a loft conversion and rear extension we are looking to re-render the house with K-rend. We are unsure whether we can render over the existing, or if it'll need to come off. Thanks

Post a similar request >

24 Jan

Building work | Wall Rendering

St. Albans - AL1

Enquiry from: Linda W

Start Date: Immediate

Rendering all outside house

Post a similar request >

23 Jan

Building work | Wall Rendering

St. Albans - AL1

Enquiry from: Kate M

Start Date: Immediate

Hi, I would like to get a quote for (1) Fixing some hairline cracks in exterior rendering (2) replastering an internal dining room ceiling (3) Replastering next to a fireplace Please let m...

Post a similar request >

04 Jan

Building work | Wall Rendering

St. Albans - AL3

Enquiry from: Ian T

Start Date: Immediate

A quote for the removal of the existing rendering and application of new.

Post a similar request >

21 Dec

Building work | Wall Rendering

St. Albans - AL1

Enquiry from: Yiannis B

Start Date: Immediate

This is a property we are renting out and the tenants started complaining about damp walls and mould. We brought a company in to eradicate the mould but the wet patches reappeared once the weather bec...

Post a similar request >

21 Dec

Conversion | Loft

St. Albans - AL1

Enquiry from: Rod L

Start Date: Immediate

convert back-facing side of existing velux loft extension to a dormer with two windows, in order to add additional space through head height and conversion of the eaves. room is approx 3.3m long and w...

Post a similar request >

20 Dec

Building work | Wall Rendering

St. Albans - AL4

Enquiry from: Stephen B

Start Date: Immediate

Looking to K render the house please

Post a similar request >

03 Dec

Insulation | Cavity Wall

St. Albans - AL2

Enquiry from: Chris M

Start Date: Immediate

Asses and quote for cavity wall insulation. 1920s(?) built 4 bed semi.

Post a similar request >

07 Nov

Building work | Wall Rendering

St. Albans - AL3

Enquiry from: Neil A

Start Date: Immediate

Hi. I'd like to inquire about getting a quote to change our existing pebbledash to a smooth white render. We would require it front, side and back. Thanks.

Post a similar request >

31 Oct

Building work | Wall Rendering

St. Albans - AL1

Enquiry from: Hannah C

Start Date: Immediate

Hi there We’ve just moved into St Albans terrace house . I’d like a quote for a loft ladder, boarding and insulation. Thanks Hannah

Post a similar request >

21 Sep

Building work | Wall Rendering

St. Albans - AL1

Enquiry from: James G

Start Date: Immediate

dear sir/ madam, the west facing wall of our house is rendered solid brickwork, we have had work done elsewhere and insulated most of the house, except this wall. we are looking into the costs to exte...

Post a similar request >

10 Sep

Building work | Wall Rendering

St. Albans - AL1

Enquiry from: Jonathan C

Start Date: Immediate

Consultation and quote for home insulation, including reducing humidity.

Post a similar request >

05 Sep

Building work | Wall Rendering

St. Albans - AL1

Enquiry from: Grace L

Start Date: Immediate

Rising damp treatment cost estimates

Post a similar request >

04 Sep

Building work | Wall Rendering

St. Albans - AL4

Enquiry from: Dulce A

Start Date: Immediate

hi, we’re looking for external wall insulation, for our semidetached house. we would like to get a quote and see your availability. thanks! are you the property owner: owner of the property property...

Post a similar request >

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 St Albans is:

£25,829

Builder job Builder cost in 2025
Garage conversion in St Albans £9,750-£18,450
Loft conversion in St Albans £39,375-£59,375
House extensions in St Albans £34,250-£72,000
Loft insulation in St Albans £450-£690
Upvc or wood porch in St Albans £2,625-£4,025
Barn conversions in St Albans £112,500-£172,500
Basement renovation in St Albans £30,000-£46,000
Bedroom fitting in St Albans £1,500-£2,300
Bricklayers in St Albans £300-£460
Cavity wall insulation in St Albans £400-£820
Commercial new builds in St Albans £105,000-£161,000
Conservatory base in St Albans £675-£1,035
Building maintenance in St Albans £2,250-£3,450
Building insurance works in St Albans £2,250-£3,450
Pebble dashed walls in St Albans £2,000-£9,200
Plasterboard dry lining in St Albans £638-£978
Residential new builds in St Albans £105,000-£161,000
Restoration and refurbishment in St Albans £37,500-£57,500
Roof insulation in St Albans £7,500-£11,500
Underpinning in St Albans £2,250-£3,450
Wall cladding in St Albans £1,125-£1,725
Wall rendering in St Albans £3,750-£5,750
Demolition in St Albans £2,440-£3,660
Roof room in St Albans £15,000-£23,000
Shop refurbishment in St Albans £3,750-£5,750
Single storey house extension in St Albans £21,600-£37,400
Soundproofing in St Albans £900-£1,380
Driveway repair in St Albans £607-£51,140
Garden room in St Albans £6,400-£9,600
External wall insulation in St Albans £6,000-£15,000

Related Builder searches in St Albans

Builder FAQs

how thick should loft insulation be?

Over the years there has been an increase in the recommended thickness of loft insulation by the government. Obviously, the reason behind this is pretty simply - the thicker the layer of your loft insulation the bigger your savings. The UK government is very keen to every house in the country to have loft insulation fitted where possible as it helps to minimize the heating demands of these properties. Households get to benefit from loft insulation in so many ways which includes reduced energy energy bills as well as having a home that stays at a more comfortable temperature for longer.

 

Generally, for the government energy efficiency is crucial as it implies that the highest demand ( which is usually the time of the day when gas or electricity use is at its peak ) reduces, since each building requires slightly less energy. Overall, that ultimately implies that new power plants don’t have to be built which is some nice cost savings for the government.

 

In the 1980’s, any thickness of loft insulation from 25 mm to 50 mm was considered the standard. But then, building regulations stated that homes should have as much as 100 mm of loft insulation. Over time, this gradually increased to 270mm for new builds and also recommended for other properties, although not essential. As a result of this, there’s always a need to check how much insulation you currently have in your loft before you decide to purchase more. You may discover that you already have something within the range of 20 mm to 200 mm up there and knowing this and the insulation values will assist in determining how much more you’ll need to purchase, if any at all. You should also note that some modern materials can offer the same thermal insulation whilst not being as thick.

How long will my garage conversion take?

It’s often said that a garage conversion can take anywhere between 1 week to 1 month, depending on the size and scope. But many standard conversions without any plumbing can take as little as 5 days. Your contractor will be able to tell you exactly how long your garage conversion will take.

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.

when is underpinning required

If you’re currently experiencing some structural issues with your building or property and you’ve heard a thing or two about the several benefits associated with getting underpinning done, you may be wondering if underpinning might just be the answer to your worries. Well, one thing you should when it comes to underpinning is the fact that, while there are some structural issues that may actually warrant an underpinning job, there are also some situations that can not be fixed by underpinning. In this post, we’re going to consider the events whereby underpinning of your house will be required. Let’s take a look!

First and foremost, you should know that underpinning isn’t required for issues related to slab heave. Footing movements which are likely to reverse normally occur when the content of the soil moisture changes unevenly which gives rise to slab heave. This movement results for a reversible effect.

Generally, underpinning is done to remedy problems related with the movement of the footings of a building or property, but as stated above – not all movements require underpinning. So, when is underpinning required? More often than not, a situation that’s resolved by underpinning is the event whereby the footings of a building or structure drops or subside as a result of some reasons that are irreversible. For example, footing movements caused by a footing set on a soft or loose soil which may be irreversible.

In the event whereby the footings of your house haven’t been installed as deep as required during the initial construction, then you will need to have your building underpinned to make it more stable. If you’re also looking to increase the load on your foundation like adding another storey, you may also need to have your house underpinned to support the extra weight added.

how thick should render be on external wall?

Render serves two basic functions. One is it’s protective qualities as render acts as waterproof for the wall which enables them breathe by allowing water vapour move from the inside to the outside of the structure while also working to prevent water or rain from finding its way inside the structure. While the second function is the decorative qualities as render is able to provide the structure with a fine finish and colour to make the building a lot more appealing and correcting faults in line and level in the masonry.

If you wish to apply render on your external wall, you’d probably be wondering just how thick the render should be to perfectly serve both of functions. In this article, we’re going to take a look at just that!

For a render thickness, the British Standard Wind Driven Rain Index has come up with 4 ratings which include Sheltered, Moderate, Severe as well as Very Severe. An area with Very Severe rating include South West England. This rating implies that the thickness of the render in this area should be increased to at least 20mm for a direct one coat render applications as well as 5 to 6 external wall insulation base coat applications. And if you happen to reside within one mile of the coast, it’s strongly recommended you incorporate an extra repellent protection like Paraguard AG from Parex.

In general, render that’s prepared on site with cement and sand should be have a minimum of 20mm to 25mm thickness. Although, it should be noted that the quality of the render is based on quality of the sand incorporated, the design mix as well as being largely dependent on how good the mixing technique from the applicator is. The most common reasons why traditional renders fails is due to both poor mixing ratios and low quality materials used.

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 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.

Are barn conversions VAT exempt?

If you’ve converted a non-residential barn into a home, you might be able to reclaim some of the VAT that you’ve paid for your project. This includes money spent on:

• Construction materials

• Flooring

• Light fittings

• Kitchen units and worktops

• Electrical, heating and plumbing materials

To reclaim your VAT from HMRC, make sure you request and keep all of your invoices. You’ll also need proof of planning permission and evidence of completion. You should then submit your claim with all relevant paperwork within three months of receiving your completion certificate. You’re only allowed to submit one claim, so you’ll need to make sure you get it right first time.

Builder help and advice

How it works

Tell us about your Builder project

Answer a few quick questions to help us match you with the right Builder

Get up to 4 free quotes

Receive no-obligation quotes from 4 Builders working in St Albans.

Pick the right pro for you

Compare prices, customer reviews and services, and hire the right Builder.

Are you a Builder in St Albans?

View our open Builder jobs near you

Join today
View Shortlist