Welwyn two storey extensions from £86,800

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Cost of a two storey extension in Welwyn

A two storey extension is a great way to add extra space to your home, adding value to your property. But how much does it cost to build a double storey extension in Welwyn?

Costs range from £86,800 (Complex Construction based in AL7) to £87,988 (Red Swan Construction based in SG2), but these are just estimates. The best way to compare costs is to get real quotes from real builders.

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Estimates for two storey extension near Welwyn

Estimates for common extension builder jobs in Welwyn;

JobEstimate
Underpinning a house£17,342
Build a two storey extension£87,763
Build a timber frame extension£25,842
Install a swimming pool£80,842
Cost to build a single storey extension£51,845
Cost to build a side return extension£39,725
Install an RSJ£2,042
Build an outbuilding£9,842
Build a mansard loft conversion£51,842
Cost of a loft conversion£32,271
Build a kitchen extension£41,842
Build a hip to gable loft conversion£41,842
Build a granny annexe£86,842
Build a garden office£9,842
Convert a garage£15,842
Build a new garage£18,342
Build a flat roof extension£21,842
Build a dormer loft conversion£41,842
Lay a concrete foundation£6,092
Convert a bungalow loft£28,842
Basement conversion cost£35,725
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Two storey extension cost in Welwyn
Estimate Two storey extension cost in Welwyn based on hourly/daily rate (excluding VAT or callout charges)
Business name Two storey extension cost
Laurdan Building LTD, Welwyn, AL6 £87,964
MA Gower, Welwyn, AL6 £87,400
Interior Installations, Welwyn, AL6 £87,832
Complex Construction, Welwyn Garden City, AL7 £86,800
J&R Property, Hertfordshire, AL7 £87,952
Ross Taylor Homes, Unit 18 Mardleybury Farm, Mardleybury Road, Datchworth, Hertfordshire, SG3 £87,748
PRIMEEXPERT, Hertfordshire, AL7 £87,952
Herts Premier Builders, Hertfordshire, AL7 £87,952
LBH Building & Property Services, Welwyn Garden City, Hertfordshire, AL7 £87,760
STYLE BUILDING SERVICES LTD, Welwyn Garden City, AL7 £87,832
Buildstar, Welwyn garden city, AL7 £87,400
Lemsford Building, Herefordshire, AL8 £87,952
NJG BUILDING SOLUTIONS LTD, Hertfordshire, AL7 £87,952
J J Roofing & Gutter Repairs, Hatfield, AL9 £87,796
J B R Contracts, 38 Norwood Close, Hertford, Hertfordshir, SG14 £87,724
Hertfordshire Design, Hertfordshire, AL10 £87,928
Red Swan Construction, Hertfordshire, SG2 £87,988
Grain Property, Hertfordshire, AL4 £87,940
A S G Developments - Herts LTD , Hatfield, AL10 £87,400
Oakridge Construction Limited, Hertford, SG14 £87,808
GB Build, 33 Walnut Tree Close, Aston End, Poplar, Stevenage, Hertfordshire, SG2 £87,760
VALLEYCREST CONSTRUCTION LTD, Hatfield, AL10 £87,820
Herts Loft Ltd, Hertford, SG14 £87,832
Harris Building Solutions Limited, Stevenage, SG1 £87,772
A1 Home Care Building Maintenance, Hatfield, AL10 £87,820

Get extension builder rates instantly

Get extension builder rates instantly (excluding VAT or callout charges)
Location in UKHourly RateDaily Rate
Two Storey Extension near Welwyn Garden City£36£229
Two Storey Extension near Hertford£39£247
Two Storey Extension near Hatfield£53£244
Two Storey Extension near Stevenage£37£239
Two Storey Extension near Harpenden£70£264
Two Storey Extension near Hitchin£37£238
Two Storey Extension near East Hertfordshire£37£241
Two Storey Extension near Ware£40£252
Two Storey Extension near St Albans£52£246
Two Storey Extension near North Hertfordshire£37£239