Name: Extension Builder
Brand: HaMuch
SKU: extension-renovation
Rating: 4.7 (20 reviews)

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Find affordable SL1 extension builders

Prices range from cheapest £18/hour and £177/day (Jeet & jarmal) to £54/hour and £306/day (Kaz Construction Ltd) - average £41/hr

HaMuch is Excellent

Local SL1 extension builders

"Loft conversion" - SL1

"Remove internal wall , fit RSJ , plaster ceiling" - PAUL, SL1

"Garden office" - SL2

"Single storey extension" - SLOUGH

"Loft conversion" - SLOUGH

"Need an extension builder" - MZ, SLOUGH

"RSJ installation" - ASHLEY, SLOUGH

"Two storey extension" - WINDSOR

"Loft conversion ( dormer )" - LISA, WINDSOR & MAIDENHEAD

"Rip off - install RSJ beam (3 meter) rear wall, Garage knock, knock dining wall, partially knock sitting wall. It's 1950 semi-detached house and solid walls." - RAVI, SL3

"Rip off - install RSJ beam (3 meter) rear wall, Garage knock, knock dining wall, partially knock sitting wall. It's 1950 semi-detached house and solid walls." - SL3

"Rip off - one RSJ beam (3 meter) rear wall, brick work for closing 3 door holes, Garage knock, knock dining wall, partially knock sitting wall." - RAVI, SL3

"Side return extension5.9M BY 3 M single floor extention, slant roof, two sky light windows, bi folding doors. knocking down supporting external wall that also joins dining/kitchen to open the whole space up" - EMMA, WINDSOR & MAIDENHEAD

"Outbuilding" - SLOUGH

"Loft conversion" - SL2

"Domer Loft conversion" - GAJ, SL2

"Loft conversion" - SL6

"Loft conversion" - WINDSOR

"Single storey extension" - SL1

"Side return extension" - WINDSOR

What are the best ways to avoid problems when paying the Extension Builder?

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

Before the job starts should I agree standards of quality and behaviour?

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 SL1 extension builders rates

Compare SL1 extension builders rates (excluding VAT or callout charges)
Location in UK	Hourly Rate	Daily Rate
Extension Builders near Slough	£36	£238
Extension Builders near Windsor & Maidenhead	£36	£238
Extension Builders near Windsor	£36	£238
Extension Builders near Maidenhead	£36	£236
Extension Builders near Gerrards Cross	£37	£244
Extension Builders near Egham	£36	£228
Extension Builders near Staines-upon-Thames	£36	£231
Extension Builders near Hillingdon	£56	£240
Extension Builders near Ascot	£35	£237
Extension Builders near Bracknell Forest	£35	£248

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.

Build a timber frame extension - £26,144

Garden office - £10,144

Granny annexe - £87,144

Build a flat roof extension - £22,144

Convert a Garage - £16,144

Hip to gable loft conversion - £42,144

Convert a bungalow loft - £29,144

Build a dormer loft conversion - £42,144

Build a swimming pool - £81,144

Build a Mansard loft conversion - £52,144

Concrete foundations - £6,394

Underpin a building - £17,644

Two storey extension - £88,216

Convert a basement - £39,120

Side return extension - £43,120

Loft conversion - £35,100

Garage - £18,644

Single storey extension - £57,880

Outbuilding - £10,144

Install an RSJ - £2,344

Build a kitchen extension - £42,144

More extensions & conversions cost guides...

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