From £36,150
Relax... you have found a reliable extension builder in Muswell Hill. PLAN C - Design. Build. Create is a friendly and reliable company based in M...
From £36,675
We are builders with a difference.We are proud to be a family business. Brothers Pierre and Christian Carboni established PLAN C in 2011, having pr...
From £36,600
N10 Building Contractors Ltd are here to help customers who need an Extension Builder in Muswell Hill. We offer a competitive rate to complete all ...
From £33,975
Need an Extension Builder in Muswell Hill? Ally Electrical Services Ltd has been helping local clients (5 mile radius) with their extension builder...
From £37,200
Relax... you have found a reliable extension builder in Muswell Hill. CM Build is a friendly and reliable company based in Muswell Hill who conside...
From £33,975
Whether it's garden design, a garden studio or home renovations - we can do it. What you show me, what you imagine, we can build. Contact us now fo...
From £36,300
Galaia Limited are here to help customers who need an Extension Builder in Muswell Hill. We offer a competitive rate to complete all your extension...
From £34,500
Trusted and professional extension builder in Muswell Hill. Experienced in all extension buildering work and keeping within budget and on quote. Ar...
From £35,550
SJ Expert Building Services are here to help customers who need an Extension Builder in Muswell Hill. We offer a competitive rate to complete all y...

Comparing extension builders estimates for Loft conversion gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
What to do - Get rates and quotes for the cost of a loft conversion in Muswell Hill by posting your job to extension builders in Muswell Hill.
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.

Underpin a building - £17,713

Two storey extension - £88,319

Build a timber frame extension - £26,213

Build a swimming pool - £81,213

Single storey extension - £59,256

Side return extension - £43,894

Install an RSJ - £2,413

Outbuilding - £10,213

Build a Mansard loft conversion - £52,213

Loft conversion - £35,745

Build a kitchen extension - £42,213

Hip to gable loft conversion - £42,213

Granny annexe - £87,213

Garden office - £10,213

Convert a Garage - £16,213

Garage - £18,713

Build a flat roof extension - £22,213

Build a dormer loft conversion - £42,213

Concrete foundations - £6,463

Convert a bungalow loft - £29,213

Convert a basement - £39,894