Build a mansard loft conversion in Knebworth from £51,200

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.

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Mansard loft conversion cost in Knebworth

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 £51,200 (Complex Construction based in AL7) to the dearest of around £52,008 (Stevenage Roofing Services based in SG1).

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 Knebworth by posting a job with HaMuch and we'll send it to extension builders in Knebworth. 

Estimates for build a mansard loft conversion near Knebworth

Estimates for common extension builder jobs in Knebworth;

JobEstimate
Cost to underpin a house£17,368
Build a two storey extension£87,802
Cost to build a timber frame extension£25,868
Cost to build a swimming pool£80,868
Cost to build a single storey extension£52,357
Cost to build a side return extension£40,013
Cost to Install an RSJ£2,068
Build an outbuilding£9,868
Cost to build a mansard loft conversion£51,868
Cost of a loft conversion£32,511
Cost to build a kitchen extension£41,868
Build a hip to gable loft conversion£41,868
Build a granny annexe£86,868
Build a garden office£9,868
Cost of a garage conversion£15,868
Build a new garage£18,368
Cost to build a flat roof extension£21,868
Cost to build a dormer loft conversion£41,868
Lay a concrete foundation£6,118
Cost of a bungalow loft conversion£28,868
Basement conversion cost£36,013
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Build a Mansard loft conversion cost in Knebworth
Estimate Build a Mansard loft conversion cost in Knebworth based on hourly/daily rate (excluding VAT or callout charges)
Business name Build a Mansard loft conversion cost
Ross Taylor Homes, Unit 18 Mardleybury Farm, Mardleybury Road, Datchworth, Hertfordshire, SG3 £51,832
Interior Installations, Welwyn, AL6 £51,888
MA Gower, Welwyn, AL6 £51,600
Laurdan Building LTD, Welwyn, AL6 £51,976
Red Swan Construction, Hertfordshire, SG2 £51,992
GB Build, 33 Walnut Tree Close, Aston End, Poplar, Stevenage, Hertfordshire, SG2 £51,840
Complex Construction, Welwyn Garden City, AL7 £51,200
Wyatt Installations, Hertfordshire, SG1 £52,000
Harris Building Solutions Limited, Stevenage, SG1 £51,848
J&R Property, Hertfordshire, AL7 £51,968
G B BUILDSTORE LTD, Stevenage, SG1 £51,920
Stevenage Roofing Services, Hertfordshire, SG1 £52,008
PRIMEEXPERT, Hertfordshire, AL7 £51,968
Herts Premier Builders, Hertfordshire, AL7 £51,968
LBH Building & Property Services, Welwyn Garden City, Hertfordshire, AL7 £51,840
STYLE BUILDING SERVICES LTD, Welwyn Garden City, AL7 £51,888
Precision Roofing & Building Maintenance, Stevenage, SG1 £52,000
Buildstar, Welwyn garden city, AL7 £51,600
WALKERN CONSTRUCTION LIMITED, Ardeley, SG2 £51,944
Conserv-a-tech, 24 Riccat Lane, Stevenage, Hertfordshire, SG1 £51,840
Lemsford Building, Herefordshire, AL8 £51,968
TPJ Building Ltd, Ware, SG12 £51,896
Country Home Concepts, Hertfordshire, SG4 £52,008
J B R Contracts, 38 Norwood Close, Hertford, Hertfordshir, SG14 £51,816
Up and Out Builds Ltd, Ware, SG12 £51,888

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Get extension builder rates instantly (excluding VAT or callout charges)
Location in UKHourly RateDaily Rate
Build A Mansard Loft Conversion near Stevenage£37£239
Build A Mansard Loft Conversion near Welwyn Garden City£36£229
Build A Mansard Loft Conversion near Hertford£39£247
Build A Mansard Loft Conversion near Hitchin£37£238
Build A Mansard Loft Conversion near East Hertfordshire£37£241
Build A Mansard Loft Conversion near North Hertfordshire£37£239
Build A Mansard Loft Conversion near Hatfield£53£244
Build A Mansard Loft Conversion near Ware£40£252
Build A Mansard Loft Conversion near Harpenden£70£264
Build A Mansard Loft Conversion near Letchworth£37£239