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Torrington
Torrington Design
NIECEIC / NAAPIT GASSAFE WATER REGULATIONS We offer services towards completion of high end construction projects to dis...
"Did callout made safe my elctrical work thanks" - reviewed 16/05/23, REECYRUSSO
SH Enterprise
Need the extension buildering job done quickly without breaking the bank? SH Enterprise offer fast, reliable, and affordable extension buildering s...
"Concrete foundation" - W1T, job posted 16/10/25
CK Constructions & Development Ltd
CK Constructions & Development Ltd is a trusted extension builder serving customers in Blackfriars and the surrounding area. Contact us to today to...
"Basement conversion" - LAMBETH, job posted 02/05/25
A to Z Builders Ltd
A to Z Builders Ltd are here to help customers who need an Extension Builder in Blackfriars. We offer a competitive rate to complete all your exten...
JK Doors
JK Doors is a trusted extension builder serving customers in Blackfriars and the surrounding area. Contact us to today to get a competitive quote f...
GS Fabric Ltd
GS Fabric Ltd is an established and experienced local extension builder in Blackfriars. Please contact us for a free, no obligation quote and compe...
JM Building Services
JM Building Services is a trusted extension builder serving customers in Blackfriars and the surrounding area. Contact us to today to get a competi...
Buildwiser
Buildwiser is a trusted extension builder serving customers in Blackfriars and the surrounding area. Contact us to today to get a competitive quote...
F & F Building Services
F & F Building Services is an established extension buildering business in Blackfriars. We come highly recommended and provide competitive quotes f...
AAA Design Decorators
AAA Design Decorators are here to help customers who need an Extension Builder in Blackfriars. We offer a competitive rate to complete all your ext...
AGRI CONSTRUCTION
Need to find an Extension Builder near you for all your extension buildering work?
AGRI CONSTRUCTION provides a local, trusted extension bu...
Q Lofts and Extensions
Anthony Sullivan
We build Lofts. We build Extensions. We undertake conversions. Our Terms and conditions apply as shown in our starter packs.
£41/hr
£255/day
TOP CONSTRUCTION
TOP CONSTRUCTION is an established extension buildering business in Blackfriars. We come highly recommended and provide competitive quotes for your...
£45/hr
£282/day
Flow Property Services
Need an Extension Builder in Blackfriars? Flow Property Services has been helping local clients (5 mile radius) with their extension buildering job...
£40/hr
£249/day
SDL PKB
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
£42/hr
£263/day
SCANDIIN
SCANDIIN is an established and experienced local extension builder in Blackfriars. Please contact us for a free, no obligation quote and competitiv...
£48/hr
£299/day
Londoner Building Ltd.
We have the experience and knowledge to carry out any project, big or small. Our team of experts thoroughly plan the budget and manage your projec...
£46/hr
£284/day
Aylaa Exclusive
Need an Extension Builder in Blackfriars? Aylaa Exclusive has been helping local clients (5 mile radius) with their extension buildering jobs for m...
£42/hr
£262/day
Omniform
Omniform are here to help customers who need an Extension Builder in Blackfriars. We offer a competitive rate to complete all your extension builde...
Quickly find an Extension Builder in Blackfriars
Use these steps to find Extension Builders in Blackfriars for FREE!
- Post your job: Click "Get quotes" and briefly describe your job.
- Enter your details: We’ll match you with Extension Builders in Blackfriars. We’ll notify you via text or email when an Extension Builder is available to quote.
- Select your Extension Builder: Compare Extension Builders interested in working with you. You can use HaMuch to safely message local Blackfriars Extension Builders or phone them directly - you’re in control!
Local Extension Builders in London Boroughs
Job estimates from extension builders near you
Whether you’re looking to extend your kitchen with a side return extension or you want to convert your basement into a liveable space, read our cost guides to get an idea of how much each project costs before getting a more accurate quote from our database of reliable tradespeople.
Build a timber frame extension - £26,224
Garden office - £10,224
Granny annexe - £87,224
Build a flat roof extension - £22,224
Convert a Garage - £16,224
Hip to gable loft conversion - £42,224
Convert a bungalow loft - £29,224
Build a dormer loft conversion - £42,224
Build a swimming pool - £81,224
Build a Mansard loft conversion - £52,224
Concrete foundations - £6,474
Underpin a building - £17,724
Two storey extension - £88,336
Convert a basement - £40,020
Side return extension - £44,020
Loft conversion - £35,850
Garage - £18,724
Single storey extension - £59,480
Outbuilding - £10,224
Install an RSJ - £2,424
Build a kitchen extension - £42,224
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