Find affordable extension builders near AL9
- Local extension builders AL9
- Job estimates from extension builders near you
- Compare AL9 extension builders rates
| Low | Average | High |
|---|---|---|
| £18 | £37 | £50 |
| Average hourly rate from 33 extension builders in AL9 ex VAT or callout | ||
Average AL9 extension builder hourly rate is £36
Range from the cheapest, mostly independent, £18 per hour and £140 per day (P&R Master Construct Design ) to the dearest, normally the best, £50 per hour and £246 per day (M & L Landscaping & Garden Maintenance).
Comparing hourly and daily rates of extension builders gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
What to do - Click 'Get quotes' and describe your job and we will send it to your local extension builders for FREE.

Local extension builders AL9
G FORCE BUILDERS
£37/hour
£234/day
Need to find an Extension Builder near you for all your work?
G FORCE BUILDERS provides a local, trusted service in and around AL9. Homeowners and landlords choose us for our excellent knowledge, experience and reliability plus reasonable call-out fees if applicable and no obligation quotes.
"Single storey extension"
WELWYN
Mick O Farrell Builders
£37/hour
£229/day
Mick O Farrell Builders are here to help customers who need an Extension Builder in AL9. We offer a competitive rate to complete all your jobs to professional standards.
"We are small builders looking quote for foundations ,groundworks and drainage - soakways Thanks Harsha.R"
HARSHA.RAYI, AL8
A S G Developments - Herts LTD
£25/hour
£200/day
Extension Builder in Hatfield, AL10. Working within a 20 mile radius.
Architecture and Construction all in one place.
FREE DRAWINGS for all projects we build.
"Outbuilding and plans "
EN6
Buildline
£37/hour
£234/day
Need to find an Extension Builder near you for all your work?
Buildline provides a local, trusted service in and around AL9. Homeowners and landlords choose us for our excellent knowledge, experience and reliability plus reasonable call-out fees if applicable and no obligation quotes.
"Concrete foundation for 5084 square feet"
HATTIE, EN6
P&R Master Construct Design
£18/hour
£140/day
Extension Builder in Hatfield Hertfordshire, AL10. Working within a 20 mile radius.
Friendly team can provide for you the most specialist interior refurbishment.We work successfully with developers, landlords and tenants to bring their properties up to the necessary standard for occupation or letting.Think of us you're ideal supo...
"Loft conversion"
AL4
Hertfordshire Design
£39/hour
£244/day
Hertfordshire Design are extension builders in AL9 who work within a 20 mile radius. Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of work in AL9 and testimonials.
VALLEYCREST CONSTRUCTION LTD
£37/hour
£235/day
Extension Builder in AL9, AL10. Covering 20 mile radius.
VALLEYCREST CONSTRUCTION LTD is a trusted Extension Builder serving customers in AL9 and the surrounding area. Contact us to today to get a competitive quote for work in AL9. We offer value for money and quality to our customers, we pride ourselves on the positive feedback.
A1 Home Care Building Maintenance
£37/hour
£235/day
A1 Home Care Building Maintenance are here to help customers who need an Extension Builder in AL9. We offer a competitive rate to complete all your jobs to professional standards.
Cw building services
£25/hour
£200/day
Extension Builder in Potters bar, EN6. Working within a 10 mile radius.
Reliable service, over 20 years experience, friendly family business, all work guaranteed. Free written quotations.
Buyerz Trading
£39/hour
£245/day
Buyerz Trading is an established and experienced local extension builder in AL9. Please contact us for a free, no obligation quote and competitive rates. Covering a 20 mile radius.
London Elite Construction
£38/hour
£236/day
Extension Builder in AL9, EN6. Working within a 10 mile radius.
London Elite Construction is an established business in AL9. We come highly recommended and provide competitive quotes for your work.
Advance Construction Solutions
£37/hour
£231/day
Trusted and professional extension builder in AL9. Experienced in all work and keeping within budget and on quote. Advance Construction Solutions have many happy customers in AL9, testimonials available.
NJG BUILDING SOLUTIONS LTD
£39/hour
£246/day
NJG BUILDING SOLUTIONS LTD is an established and experienced local extension builder in AL9. Please contact us for a free, no obligation quote and competitive rates. Covering a 20 mile radius.
J J Roofing & Gutter Repairs
£37/hour
£233/day
Trusted and professional extension builder in AL9. Experienced in all work and keeping within budget and on quote. J J Roofing & Gutter Repairs have many happy customers in AL9, testimonials available.
All In One Property Services London Ltd
£39/hour
£245/day
All In One Property Services London Ltd are here to help customers who need an Extension Builder in AL9. We offer a competitive rate to complete all your jobs to professional standards.
Defined Builds
£37/hour
£231/day
Defined Builds are extension builders in AL9 who work within a 10 mile radius. Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of work in AL9 and testimonials.
M & L Landscaping & Garden Maintenance
£50/hour
£200/day
Extension Builder in Welwyn garden city, AL7. Working within a 20 mile radius.
We have extensive staff with over 50 years in the business passed down in generations our family run business have all the work and budget and qualified services you require call today for a free no obligation quote our aim is to give 100 % ...
JMB Design & Build
£39/hour
£245/day
Extension Builder in Potters Bar, EN6. Working within a 10 mile radius.
JMB Design & Build is a full service building construction company dedicated to building and improving residential and commercial structures according to client needs and desires. Owned and managed by James Boulton, himself and his team have over ...
JMB Design & Build
£37/hour
£231/day
Need to find an Extension Builder near you for all your work?
JMB Design & Build provides a local, trusted service in and around AL9. Homeowners and landlords choose us for our excellent knowledge, experience and reliability plus reasonable call-out fees if applicable and no obligation quotes.
The most important thing is do avoid handing over cash or paying large sums in advance. Be wary of paying cash for a cheaper job, i.e. to avoid VAT, you may be going down a slippery slope of not doing things properly which may eventually mean your job is also not done properly.
Agree when you intend to pay, ideally after you are satisfied with the completed job. If it is a big job agree a schedule of staged payments which is fair to both parties.
To avoid bad tradespeople and to ensure you can find them should they not answer a mobile;
- Get proper contact details and check them yourself
- Check if the company is verified on the Companies House website
- Get phone details, ideally a land line or 0800 number and check it
- Get a physical office address
Get quotes in writing by email or in person if possible. Getting quotes online or by text is ok (make sure you accept the offer by replying). For large projects make a written agreement, schedule of works and snagging plans as part of a working document. Also;
- Agree expected quality of workmanship and materials in advance
- When will work start and when will project be finished, what happens if project over runs ?
- How long is the guarantee on work and materials eg 12 months
- Discuss onsite behaviour in advance (no smoking, swearing or using mobile phones for non-work purposes)
- Agree that your Extension Builder will remove all debris and rubbish and what level of tidying up you want after job
Compare AL9 extension builders rates
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Extension Builders near Hatfield | £54 | £241 |
| Extension Builders near Potters Bar | £38 | £240 |
| Extension Builders near Welwyn Garden City | £36 | £229 |
| Extension Builders near St Albans | £52 | £242 |
| Extension Builders near Cheshunt | £41 | £244 |
| Extension Builders near Hertford | £39 | £247 |
| Extension Builders near High Barnet | £37 | £236 |
| Extension Builders near Borehamwood | £37 | £238 |
| Extension Builders near Harpenden | £69 | £256 |
| Extension Builders near Hoddesdon | £40 | £252 |
Job estimates from extension builders near you
Whether you’re looking to extend your kitchen with a side return extension or you want to convert your basement into a liveable space, read our cost guides to get an idea of how much each project costs before getting a more accurate quote from our database of reliable tradespeople.

Timber frame extension - £25,840

Garden office - £9,840

Granny annexe - £86,840

Flat roof extension - £21,840

Garage conversion - £15,840

Hip to gable loft conversion - £41,840

Bungalow loft conversion - £28,840

Dormer loft conversion - £41,840

Swimming pool - £80,840

Mansard loft conversion - £51,840

Concrete foundation - £6,090

Underpinning - £17,340

Two storey extension - £87,760

Basement conversion - £35,700

Side return extension - £39,700

Loft conversion - £32,250

Garage - £18,340

Single storey extension - £51,800

Outbuilding - £9,840

RSJ installation - £2,040

Kitchen extension - £41,840
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