Cost to build a dormer loft conversion in SW20

Cost of dormer loft conversions in SW20

Dormer loft conversions are ideal if you want to add lots of extra space to your home. Adding a box-like structure or structures to the roof, you essentially extend the roofline to add significant square footage to your loft space. This makes dormer loft conversions one of the most popular loft conversion types, as they're ideal for adding a new main bedroom with en-suite or even a self-contained living space.

In SW20, prices for dormer loft conversions range from £41,600 (Early Druid Ltd based in KT3) to £42,240 (Silverain Limited based in SW19), but how much your conversion costs will vary depending on the size of your property, how easy access to your roof is and what you want to use the space for.

The best way to get an accurate price is to compare quotes from extension builders in SW20. Post your job on HaMuch now and we'll put you in touch with available extension builders.

Estimates for dormer loft conversion near SW20

How much does a dormer loft conversion cost?
Dormer loft conversion cost per m2
Factors affecting the cost of a dormer loft conversion
What is a dormer loft conversion?
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Can you add a dormer to any house?
How much extra space does a dormer give you?

	Job	Estimate
	Underpinning a house	£17,392
	Build a two storey extension	£87,838
	Build a timber frame extension	£25,892
	Install a swimming pool	£80,892
	Cost to build a single storey extension	£52,843
	Cost to build a side return extension	£40,287
	Install an RSJ	£2,092
	Build an outbuilding	£9,892
	Build a mansard loft conversion	£51,892
	Cost of a loft conversion	£32,739
	Build a kitchen extension	£41,892
	Build a hip to gable loft conversion	£41,892
	Build a granny annexe	£86,892
	Build a garden office	£9,892
	Convert a garage	£15,892
	Build a new garage	£18,392
	Build a flat roof extension	£21,892
	Build a dormer loft conversion	£41,892
	Lay a concrete foundation	£6,142
	Convert a bungalow loft	£28,892
	Basement conversion cost	£36,287

Business name	Dormer loft conversion cost
BuildExtensions, 604 Kingston Road, Raynes Park, SW20	£41,840
Kisiel Group, London, Greater London, SW20	£41,840
SURREY HOME & GARDEN SERVICES, London, SW20	£41,960
Arkadia Properties Ltd, Greater London, SW20	£41,944
RECOM Construction, Greater London, SW20	£41,944
RELM Interiors Ltd, 50 Southdown Road, London, Greater London, SW20	£41,944
My Design Needs / Modernation Ltd., Greater London, SW20	£41,936
SOUTH SIDE BUILDERS, Merton, SW20	£41,856
Ash House Investment Ltd, London, Surrey, kt3	£41,832
Racsel Building Services Ltd, New Malden, KT3	£41,856
Racsel Building Services Ltd, New Malden, KT3	£41,856
Early Druid Ltd, New Malden, KT3	£41,600
EcoHomeLondonLtd, Greater London, SM4	£41,936
Flanagan Construction Ltd, Morden, SM4	£42,000
Design Manage Build, Worple road mews, Wimbledon, London, Sw19	£41,840
PT DECORATIONS LTD, Morden, SM4	£41,888
Silverain Limited, London , SW19	£42,240
Galaxy Extend, 17A, New Malden, Errol Gardens, London, Greater London, KT3	£41,832
DesignBox Architecture Limited, London, SW19	£41,880
XUE BUILDERS, New Malden, KT3	£41,856
Firman Reece Ltd, 11 Alexandra Road, London, Greater London, SW19	£41,840
Bagnall Brickwork, Surrey, SM4	£41,936
BLU STAR BUILD LLP, New Malden, KT3	£41,856
WILDE BUILDING CONTRACTORS LTD, New Malden, KT3	£41,856
Rimma Monk ID, Greater London, SW20	£41,936

Add extra space to your SW20 home from £41,600

Cost of dormer loft conversions in SW20

Estimates for common extension builder jobs in SW20;

Rates for other SW20 trades

Dormer loft conversion cost in SW20

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