Build a single storey extension in Llangefni from £40,120

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Single storey extension cost in Llangefni

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Property Maintenance Solutions

From £45,400

(last active 24/09/26)

Location

Tyn-y-gongl, LL74

Relax... you have found a reliable extension builder in Llangefni. Property Maintenance Solutions is a friendly and reliable company based in Llang...

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Hughes Construction

From £49,400

(last active 31/08/26)

Location

Bangor, LL57

Need an Extension Builder in Llangefni? Hughes Construction has been helping local clients (20 mile radius) with their extension buildering jobs fo...

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Balmoral joinery/construction

From £49,880

(last active 31/08/26)

Location

Gaerwen, LL60

Fiting of door internal/external All joinery work from new joists to fitting off skirting boards Kitchen fitting Staircase or replac...

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W F CLAYTON & CO LTD

From £49,560

(last active 12/06/26)

Location

Bangor, LL57

Need to find an Extension Builder near you for all your extension buildering work?

W F CLAYTON & CO LTD provides a local, trusted extension...

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Glyndwr Roofing & Building Services

From £45,560

(last active 12/06/26)

Location

Holyhead, LL65

Glyndwr Roofing & Building Services are here to help customers who need an Extension Builder in Llangefni. We offer a competitive rate to complete ...

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Building & Flat Roofing Contractors

From £40,120

(last active 05/03/26)

Location

Caernarfon, LL54

Building & Flat Roofing Contractors is a trusted extension builder serving customers in Llangefni and the surrounding area. Contact us to today to ...

Extension builder estimates (based on hourly rates) to build a single storey extension in Llangefni

Estimates for single storey extension near Llangefni

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Location in UKHourly RateDaily Rate
Single Storey Extension near Conwy£28£211
Single Storey Extension near Conway£28£211
Single Storey Extension near Llandudno£28£211
Single Storey Extension near Colwyn Bay£28£211

Estimates for common extension builder jobs in Llangefni;

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

Underpin a building - £17,083

Two storey extension

Two storey extension - £87,374

Build a timber frame extension

Build a timber frame extension - £25,583

Build a swimming pool

Build a swimming pool - £80,583

Single storey extension

Single storey extension - £46,653

Side return extension

Side return extension - £36,805

Install an RSJ

Install an RSJ - £1,783

Outbuilding

Outbuilding - £9,583

Build a Mansard loft conversion

Build a Mansard loft conversion - £51,583

Loft conversion

Loft conversion - £29,838

Build a kitchen extension

Build a kitchen extension - £41,583

Hip to gable loft conversion

Hip to gable loft conversion - £41,583

Granny annexe

Granny annexe - £86,583

Garden office

Garden office - £9,583

Convert a Garage

Convert a Garage - £15,583

Garage

Garage - £18,083

Build a flat roof extension

Build a flat roof extension - £21,583

Build a dormer loft conversion

Build a dormer loft conversion - £41,583

Concrete foundations

Concrete foundations - £5,833

Convert a bungalow loft

Convert a bungalow loft - £28,583

Convert a basement

Convert a basement - £32,805

More extensions & conversions cost guides...