Cost to Build a Single Storey Extension in Somerset House

Estimate Single storey extension cost in Somerset House based on hourly/daily rate (excluding VAT or callout charges)
Business name	Single storey extension cost
My Trusted Builder, London, Greater London, wc2h	£51,960
Gil Construction Ltd, Greater London, WC2H	£53,880
HouseUP, 71-75 Shelton Street, Covent Garden, London, WC2H	£51,960
Rucco Property, Greater London, WC2H	£53,880
Whitehorse Build London, Greater London, WC2H	£53,880
House Rendering Ltd, 71-75, Shelton Street, Covent Garden, Greater London, WC2H	£51,960
ElleHaus, Greater London, WC2H	£53,880
ORO Projects, Greater London, WC2H	£53,880
My Lady Builder, Greater London, WC2H	£53,880
Matstone Projects Limited, Greater London, WC2H	£53,880
Adamko Dry Lining London, Greater London, WC2N	£53,880
Elite Building, Greater London, WC2A	£53,880
Elite Building, 7 Bell Yard, London, Greater London, WC2A	£51,960
TipTop Joinery & Build, London, Greater London, WC1V	£51,960
Infinite CM, Greater London, SE1	£53,720
SDL PKB, 107 - 111 Fleet street - London -, London, Ec4a	£51,960
FLAVIA CONDE, 27 Old Gloucester Street, London, Greater London, WC1N	£51,960
Longland Construction, Greater London, WC1N	£53,880
CK Constructions & Development Ltd, Russell Square, WC1N	£52,760
Pacho Build Ltd, 27 Old Gloucester Street, London, Greater London, wc1n	£51,960
Otto & Mensah Build, 15 Lambs Conduit Street, London, WC1N	£51,960
Big Mamma, Greater London, W1F	£53,880
SCANDIIN, International House 24 Holborn Viaduct, London, Greater London, EC1A	£51,960
JM Building Services, Hatton Garden, EC1N	£52,760
Flow Property Services, London, Greater London, EC4M	£51,960

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	Job	Estimate
	Underpinning a house	£17,397
	Build a two storey extension	£87,845
	Build a timber frame extension	£25,897
	Install a swimming pool	£80,897
	Cost to build a single storey extension	£52,939
	Cost to build a side return extension	£40,341
	Install an RSJ	£2,097
	Build an outbuilding	£9,897
	Build a mansard loft conversion	£51,897
	Cost of a loft conversion	£32,784
	Build a kitchen extension	£41,897
	Build a hip to gable loft conversion	£41,897
	Build a granny annexe	£86,897
	Build a garden office	£9,897
	Convert a garage	£15,897
	Build a new garage	£18,397
	Build a flat roof extension	£21,897
	Build a dormer loft conversion	£41,897
	Lay a concrete foundation	£6,147
	Convert a bungalow loft	£28,897
	Basement conversion cost	£36,341

Build a single storey extension in Somerset House from £51,960