Build a single storey extension in Knebworth from £39,000

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Extension builder estimates (based on hourly rates) to build a single storey extension in Knebworth

Range from the cheapest single storey extension £39,000 (Complex Construction based in AL7) to the dearest single storey extension £55,160 (Stevenage Roofing Services based in SG1).
Comparing extension builders estimates for fitting a downstairs toilet 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 - Get rates and quotes to build a single storey extension in Knebworth by posting a job with HaMuch and we will send it to extension builders in Knebworth.

Estimates for single storey extension near Knebworth

"Single storey extension"

STEVENAGE



Estimates for common extension builder jobs in Knebworth;

JobEstimate
Underpinning a house£17,368
Build a two storey extension£87,802
Build a timber frame extension£25,868
Install a swimming pool£80,868
Cost to build a single storey extension£52,357
Cost to build a side return extension£40,013
Install an RSJ£2,068
Build an outbuilding£9,868
Build a mansard loft conversion£51,868
Cost of a loft conversion£32,511
Build a kitchen extension£41,868
Build a hip to gable loft conversion£41,868
Build a granny annexe£86,868
Build a garden office£9,868
Convert a garage£15,868
Build a new garage£18,368
Build a flat roof extension£21,868
Build a dormer loft conversion£41,868
Lay a concrete foundation£6,118
Convert a bungalow loft£28,868
Basement conversion cost£36,013
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Rates for other Knebworth trades

Appliance Repair Specialist
Bathroom Fitter
Builder
Carpenter and Joiner
Cleaner
Conservatory Specialist
Door Fitter
Drain Specialist
Driveway Specialist
Electrician
Extension Builder
Fencer
Fire and Security Specialist
Flooring Specialist
Gardener
Handyman
Heating Engineer
Kitchen Fitter
Landscaper
Painter and Decorator
Patio and Path Specialist
Plasterer
Plumber
Removals and Storage
Roofer
Tiler
Window Fitter
Single storey extension cost in Knebworth
Estimate Single storey extension cost in Knebworth based on hourly/daily rate (excluding VAT or callout charges)
Business name Single storey extension cost
Ross Taylor Homes, Unit 18 Mardleybury Farm, Mardleybury Road, Datchworth, Hertfordshire, SG3 £51,640
Interior Installations, Welwyn, AL6 £52,760
MA Gower, Welwyn, AL6 £47,000
Laurdan Building LTD, Welwyn, AL6 £54,520
Red Swan Construction, Hertfordshire, SG2 £54,840
GB Build, 33 Walnut Tree Close, Aston End, Poplar, Stevenage, Hertfordshire, SG2 £51,800
Complex Construction, Welwyn Garden City, AL7 £39,000
Wyatt Installations, Hertfordshire, SG1 £55,000
Harris Building Solutions Limited, Stevenage, SG1 £51,960
J&R Property, Hertfordshire, AL7 £54,360
G B BUILDSTORE LTD, Stevenage, SG1 £53,400
Stevenage Roofing Services, Hertfordshire, SG1 £55,160
PRIMEEXPERT, Hertfordshire, AL7 £54,360
Herts Premier Builders, Hertfordshire, AL7 £54,360
LBH Building & Property Services, Welwyn Garden City, Hertfordshire, AL7 £51,800
STYLE BUILDING SERVICES LTD, Welwyn Garden City, AL7 £52,760
Precision Roofing & Building Maintenance, Stevenage, SG1 £55,000
Buildstar, Welwyn garden city, AL7 £47,000
WALKERN CONSTRUCTION LIMITED, Ardeley, SG2 £53,880
Conserv-a-tech, 24 Riccat Lane, Stevenage, Hertfordshire, SG1 £51,800
Lemsford Building, Herefordshire, AL8 £54,360
TPJ Building Ltd, Ware, SG12 £52,920
Country Home Concepts, Hertfordshire, SG4 £55,160
J B R Contracts, 38 Norwood Close, Hertford, Hertfordshir, SG14 £51,320
Up and Out Builds Ltd, Ware, SG12 £52,760

Get extension builder rates instantly

Get extension builder rates instantly (excluding VAT or callout charges)
Location in UKHourly RateDaily Rate
Single Storey Extension near Stevenage£37£239
Single Storey Extension near Welwyn Garden City£36£229
Single Storey Extension near Hertford£39£247
Single Storey Extension near Hitchin£37£238
Single Storey Extension near East Hertfordshire£37£241
Single Storey Extension near North Hertfordshire£37£239
Single Storey Extension near Hatfield£53£244
Single Storey Extension near Ware£40£252
Single Storey Extension near Harpenden£70£264
Single Storey Extension near Letchworth£37£239