Build a mansard loft conversion in Onchan from £51,600

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Mansard loft conversion cost in Onchan

Mansard loft conversions are ideal if you want to maximise the space in your home. Extending your roof out into a flat roof with an almost vertical wall, they almost always require planning permission but can add significant value to your home.

Mansard loft conversions range from the cheapest installation of £51,600 (GENERAL BUILDING SERVICES based in KT1) to the dearest of around £52,400 (A Dawson Building Surveys Ltd based in IM4).

While these estimates give you a good idea how much you'll pay for a mansard loft conversion, the only way to get an accurate price is to get real quotes from real builders.

Get quotes to install a mansard loft conversion in Onchan by posting a job with HaMuch and we'll send it to extension builders in Onchan. 

Estimates for mansard loft conversion near Onchan

Estimates for common extension builder jobs in Onchan;

JobEstimate
Underpinning a house£17,500
Build a two storey extension£88,000
Build a timber frame extension£26,000
Install a swimming pool£81,000
Cost to build a single storey extension£55,000
Cost to build a side return extension£41,500
Install an RSJ£2,200
Build an outbuilding£10,000
Build a mansard loft conversion£52,000
Cost of a loft conversion£33,750
Build a kitchen extension£42,000
Build a hip to gable loft conversion£42,000
Build a granny annexe£87,000
Build a garden office£10,000
Convert a garage£16,000
Build a new garage£18,500
Build a flat roof extension£22,000
Build a dormer loft conversion£42,000
Lay a concrete foundation£6,250
Convert a bungalow loft£29,000
Basement conversion cost£37,500
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Mansard loft conversion cost in Onchan
Estimate Mansard loft conversion cost in Onchan based on hourly/daily rate (excluding VAT or callout charges)
Business name Mansard loft conversion cost
GENERAL BUILDING SERVICES, Kingston upon Thames, KT1 £51,600
A Dawson Building Surveys Ltd, Higher Foxdale , IM4 £52,400