Cost to build an outbuilding in SE21

Outbuilding cost in SE21

Outbuildings are the perfect way to add extra space to your property when you need a bit of quiet from the main house. Whether it's for a garden office, gym or workshop, an outbuilding can add value to your home and increase your quality of life.

Outbuilding costs in SE21 range from the cheapest of £9,600 (RCB Group Design & Build based in SE21) to the dearest of £10,400 (Buci builders ltd based in SE27), but these are just estimates.

Comparing extension builders estimates for building an outbuilding gives you an idea of who will be better value, but the best way to compare costs is to get actual quotes.

Get rates and quotes to build an outbuilding in SE21 by posting a job with HaMuch and we will send it to extension builders.

How much does an outbuilding cost?
Outbuilding cost per square metre
Factors that affect the cost of an outbuilding
What can you use an outbuilding for?
Do outbuildings add value to a property?
Do you need planning permission to build an outbuilding?
What is the 4-year rule for outbuildings?
Are outbuildings covered by buildings insurance?
What are the building regulations for outbuildings?

	Job	Estimate
	Underpinning a house	£17,408
	Build a two storey extension	£87,862
	Build a timber frame extension	£25,908
	Install a swimming pool	£80,908
	Cost to build a single storey extension	£53,157
	Cost to build a side return extension	£40,463
	Install an RSJ	£2,108
	Build an outbuilding	£9,908
	Build a mansard loft conversion	£51,908
	Cost of a loft conversion	£32,886
	Build a kitchen extension	£41,908
	Build a hip to gable loft conversion	£41,908
	Build a granny annexe	£86,908
	Build a garden office	£9,908
	Convert a garage	£15,908
	Build a new garage	£18,408
	Build a flat roof extension	£21,908
	Build a dormer loft conversion	£41,908
	Lay a concrete foundation	£6,158
	Convert a bungalow loft	£28,908
	Basement conversion cost	£36,463

Business name	Outbuilding cost
Create Bespoke, Greater London, SE21	£9,944
babar Jeweler Shop, Kent, SE21	£9,944
RCB Group Design & Build, London, SE21	£9,600
Parallax Project Management, Greater London, SE27	£9,944
St Ives Decor, Greater London, SE27	£9,944
Martin's Builders & Decorators, 237 Gipsy Road, West Norwood, London, Greater London, SE27	£9,848
Urban London Development, 242 Gipsy Road, London, Greater London, SE27	£9,848
BERNARD CONSTRUCTION LTD, East Dulwich, SE22	£9,864
JM Property Maintenance, Salters Hill, SE19	£9,848
Buci builders ltd, London, SE27	£10,400
Universal Plastering Ltd, Greater London, SE19	£9,944
FRIERN BUILDING LTD, East Dulwich, SE22	£9,864
Adam-Ashton &associates Limited, Greater London, SW2	£9,944
P R CONSTRUCTION, Dulwich, SE21	£9,864
Alta London Design & Project Management, Greater London, SE27	£9,944
Five Sextillion, London, SE22	£9,848
By design - interior styling and remodelling, London, Se26	£9,944
Atelier 10, Brixton, SW2	£9,888
Magic Projects London Ltd, 50A Palace Road, London, Greater London, SW2	£9,848
Bantos Limited, Greater London, sw2	£9,944
Greene, Surrey, Se19	£9,944
NKD Contractors, 65 Dartmouth Road, Forest Hill, London, Greater London, SE23	£9,848
The Perfectionist, East Dulwich, SE22	£9,888
Complete Construction London Limited, Streatham, SW2	£9,856
J&S Property Services, Greater London, SE22	£9,944

Add an outbuilding to your property in SE21 from £9,600

Outbuilding cost in SE21

Estimates for common extension builder jobs in SE21;

Rates for other SE21 trades

Outbuilding cost in SE21

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