Basement conversion costs in SY23 from £31,200

Convert your basement in SY23 from £31,200

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Cheapest builders to convert your basement in SY23
Basement conversion cost in SY23
Estimates for common extension builder jobs in SY23;

Cheapest builders to convert your basement in SY23

Range from the cheapest Basement conversion £31,200 (DRAGON CONSTRUCTION T/A based in SY25) to the dearest Basement conversion £32,100 (SP Coupland Ltd based in SY25).

Comparing extension builders estimates for a Basement conversion 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 for the cost to convert a basement in SY23 by posting a job with HaMuch and we will send it to extension builders in SY23.

Estimates for basement conversion near SY23

Basement conversion cost: price guide
Benefits of a basement conversion
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Supply costs of a basement conversion
Waterproofing options for your basement

Estimates for common extension builder jobs in SY23;

Rates for other SY23 trades

Basement conversion cost in SY23

Estimate Basement conversion cost in SY23 based on hourly/daily rate (excluding VAT or callout charges)
Business name	Basement conversion cost
SP Coupland Ltd, Sir Ceredigion, SY25	£32,100
DRAGON CONSTRUCTION T/A, Tregaron, SY25	£31,200

	Job	Estimate
	Underpinning a house	£16,980
	Build a two storey extension	£87,220
	Build a timber frame extension	£25,480
	Install a swimming pool	£80,480
	Cost to build a single storey extension	£44,600
	Cost to build a side return extension	£35,650
	Install an RSJ	£1,680
	Build an outbuilding	£9,480
	Build a mansard loft conversion	£51,480
	Cost of a loft conversion	£28,875
	Build a kitchen extension	£41,480
	Build a hip to gable loft conversion	£41,480
	Build a granny annexe	£86,480
	Build a garden office	£9,480
	Convert a garage	£15,480
	Build a new garage	£17,980
	Build a flat roof extension	£21,480
	Build a dormer loft conversion	£41,480
	Lay a concrete foundation	£5,730
	Convert a bungalow loft	£28,480
	Basement conversion cost	£31,650