Cost to Build a Single Storey Extension in Clerkenwell

Estimate Single storey extension cost in Clerkenwell based on hourly/daily rate (excluding VAT or callout charges)
Business name	Single storey extension cost
Londoner Building Ltd., Greater London, EC1A	£53,880
Aylaa Exclusive, 9 Newbury Street, london, Greater London, EC1A	£51,960
Kovacs Construction Ltd, Greater London, EC1N	£53,880
Kovacs Construction Ltd, 4th Floor, 18 St. Cross Street, London, Greater London, EC1N	£51,960
SCANDIIN, International House 24 Holborn Viaduct, London, Greater London, EC1A	£51,960
Andrew Penny Construction, 63-66 Hatton Garden 5th floor Suite 23, London, Greater London, EC1N	£51,960
Oxford West, London, EC1N	£51,960
TOP CONSTRUCTION, Moorfields Eye Hospital, EC1V	£52,120
Fornia Build Ltd, Greater London, EC1V	£53,880
Fornia Build Ltd, London, Greater London, EC1V	£51,960
Q Lofts and Extensions , London , EC1R	£79,000
JM Building Services, Hatton Garden, EC1N	£52,760
SDL PKB, 107 - 111 Fleet street - London -, London, Ec4a	£51,960
Flow Property Services, London, Greater London, EC4M	£51,960
EB, London, EC1V	£52,760
Venta Construction, 8 City Road, London, Greater London, EC1Y	£51,960
Elite Building, Greater London, WC2A	£53,880
Elite Building, 7 Bell Yard, London, Greater London, WC2A	£51,960
Otto & Mensah Build, 15 Lambs Conduit Street, London, WC1N	£51,960
Dual City Building Contractors Limited, London, EC1V	£53,880
PAD, Greater London, EC1V	£53,880
Equitable Property & Financial Services LTD, Greater London, EC1V	£53,880
Redway Construction, London, Greater London, EC1V	£51,960
K Construct Ltd, Greater London, EC1V	£53,880
Arkbuild.london, Greater London, Ec1v	£53,880

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	Job	Estimate
	Underpinning a house	£17,440
	Build a two storey extension	£87,910
	Build a timber frame extension	£25,940
	Install a swimming pool	£80,940
	Cost to build a single storey extension	£53,803
	Cost to build a side return extension	£40,827
	Install an RSJ	£2,140
	Build an outbuilding	£9,940
	Build a mansard loft conversion	£51,940
	Cost of a loft conversion	£33,189
	Build a kitchen extension	£41,940
	Build a hip to gable loft conversion	£41,940
	Build a granny annexe	£86,940
	Build a garden office	£9,940
	Convert a garage	£15,940
	Build a new garage	£18,440
	Build a flat roof extension	£21,940
	Build a dormer loft conversion	£41,940
	Lay a concrete foundation	£6,190
	Convert a bungalow loft	£28,940
	Basement conversion cost	£36,827

Build a single storey extension in Clerkenwell from £51,960