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Need an Extension Builder in Llannon? KD Construction has been helping local clients (20 mile radius) with their extension buildering jobs for many...
NTW BUILDING is an established and experienced local extension builder in Llannon. Please contact us for a free, no obligation quote and competitiv...
Relax... you have found a reliable extension builder in Llannon. R M R BUILDING CONTRACTORS is a friendly and reliable company based in Llannon who...
Llanelli Damp Proofing is an established and experienced local extension builder in Llannon. Please contact us for a free, no obligation quote and ...
Relax... you have found a reliable extension builder in Llannon. Home Maintenance & Improvement is a friendly and reliable company based in Llannon...
D.A Fisher General Builders is an established and experienced local extension builder in Llannon. Please contact us for a free, no obligation quote...
Andy Power
Worked in building all my working life.
Worked as a builder 30 plus year's.
Am a hands on builder. Have built hou...
Relax... you have found a reliable extension builder in Llannon. OSBORNE BUILDING SERVICES is a friendly and reliable company based in Llannon who ...
Llannon, SA14
Relax... you have found a reliable extension builder in Llannon. ANTIS CONSTRUCTION is a friendly and reliable company based in Llannon who conside...
Colin Cole - Total Renovations is an established and experienced local extension builder in Llannon. Please contact us for a free, no obligation qu...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Llannon it ranges from £1,760 (NTW BUILDING based in SA15) to £3,224 (KD Construction based in SA15).
Comparing extension builders estimates for fitting an RSJ 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 install an RSJ in Llannon by posting a job with HaMuch and we will send it to extension builders in Llannon.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Llanelli | £29 | £231 |
| Install An RSJ near Gorseinon | £29 | £229 |
| Install An RSJ near Swansea | £29 | £230 |
| Install An RSJ near Carmarthen | £26 | £205 |
| Install An RSJ near Carmarthenshire | £26 | £205 |
| Install An RSJ near Neath | £30 | £227 |
| Install An RSJ near Neath Port Talbot | £31 | £224 |
| Install An RSJ near Port Talbot | £31 | £227 |
| Install An RSJ near Maesteg | £38 | £283 |
| Install An RSJ near Pyle | £34 | £262 |
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 - £17,431

Two storey extension - £87,897

Build a timber frame extension - £25,931

Build a swimming pool - £80,931

Single storey extension - £53,624

Side return extension - £40,726

Install an RSJ - £2,131

Outbuilding - £9,931

Build a Mansard loft conversion - £51,931

Loft conversion - £33,105

Build a kitchen extension - £41,931

Hip to gable loft conversion - £41,931

Granny annexe - £86,931

Garden office - £9,931

Convert a Garage - £15,931

Garage - £18,431

Build a flat roof extension - £21,931

Build a dormer loft conversion - £41,931

Concrete foundations - £6,181

Convert a bungalow loft - £28,931

Convert a basement - £36,726