Cost to Build a Single Storey Extension in KW1

Extension builder estimates (based on hourly rates) to build a single storey extension in KW1

Range from the cheapest single storey extension £0 ( based in 0) to the dearest single storey extension £0 ( based in 0).
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 KW1 by posting a job with HaMuch and we will send it to extension builders in KW1.

Estimates for single storey extension near KW1

How much does a single storey extension cost?
Single storey extension cost calculator
What size single storey extension can I build without planning permission?
Do I need an architect for an extension?
How deep do foundations need to be for a single storey extension?
Is it cheaper to have an extension or a conservatory?

	Job	Estimate
	Underpinning a house	£15,500
	Build a two storey extension	£85,000
	Build a timber frame extension	£24,000
	Install a swimming pool	£79,000
	Cost to build a single storey extension	£15,000
	Cost to build a side return extension	£19,000
	Install an RSJ	£200
	Build an outbuilding	£8,000
	Build a mansard loft conversion	£50,000
	Cost of a loft conversion	£15,000
	Build a kitchen extension	£40,000
	Build a hip to gable loft conversion	£40,000
	Build a granny annexe	£85,000
	Build a garden office	£8,000
	Convert a garage	£14,000
	Build a new garage	£16,500
	Build a flat roof extension	£20,000
	Build a dormer loft conversion	£40,000
	Lay a concrete foundation	£4,250
	Convert a bungalow loft	£27,000
	Basement conversion cost	£15,000

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Extension builder estimates (based on hourly rates) to build a single storey extension in KW1

Estimates for common extension builder jobs in KW1;

Rates for other KW1 trades