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Select your affordable New Forest extension builder
Relax... you have found a reliable extension builder in New Forest. 3Lance Developments Limited is a friendly and reliable company based in New For...
GOTHIC CONSTRUCTION LTD is an established and experienced local extension builder in New Forest. Please contact us for a free, no obligation...
Trowel On is an established extension buildering business in New Forest. We come highly recommended and provide competitive quotes for your work.
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
Need an Extension Builder in New Forest? Accolade Building Care Ltd. T/A ABC has been helping local clients (20 mile radius) with their extension b...
From £2,128
GDS Building & Maintenance Ltd is an established and experienced local extension builder in New Forest. Please contact us for a free, no obligation...
From £1,488
James Golby
All our work carries a life time guarantee , If we did it and you have a problem we want to know about it. Not the bloke in the pub or your next do...
From £2,320
Advance Shutters Ltd is an established and experienced local extension builder in New Forest. Please contact us for a free, no obligation quote and...
From £2,344
Need to find an Extension Builder near you for all your extension buildering work?
MILESTONE BUILDING CONTRACTORS provides a local, trusted...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in New Forest it ranges from £1,488 (James Golby Construction based in SO51) to £2,352 (3Lance Developments Limited based in SO41).
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 New Forest by posting a job with HaMuch and we will send it to extension builders in New Forest.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near New Forest | £32 | £245 |
| Install An RSJ near Totton | £34 | £243 |
| Install An RSJ near Romsey | £32 | £230 |
| Install An RSJ near Southampton | £34 | £243 |
| Install An RSJ near Christchurch | £36 | £251 |
| Install An RSJ near Eastleigh | £34 | £244 |
| Install An RSJ near Chandler's Ford | £34 | £245 |
| Install An RSJ near Hedge End | £34 | £244 |
| Install An RSJ near Locks Heath | £33 | £240 |
| Install An RSJ near Salisbury | £35 | £247 |
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 - £17,429

Two storey extension - £87,893

Build a timber frame extension - £25,929

Build a swimming pool - £80,929

Single storey extension - £53,576

Side return extension - £40,699

Install an RSJ - £2,129

Outbuilding - £9,929

Build a Mansard loft conversion - £51,929

Loft conversion - £33,083

Build a kitchen extension - £41,929

Hip to gable loft conversion - £41,929

Granny annexe - £86,929

Garden office - £9,929

Convert a Garage - £15,929

Garage - £18,429

Build a flat roof extension - £21,929

Build a dormer loft conversion - £41,929

Concrete foundations - £6,179

Convert a bungalow loft - £28,929

Convert a basement - £36,699