From £2,416
Reliable and experienced extension builders with competitive rates and good at keeping within budget. Happy to provide examples of extension builde...
From £2,536
Relax... you have found a reliable extension builder in Thundersley. TGC Roofing is a friendly and reliable company based in Thundersley who consid...
From £2,424
Welcome to Viking Carpentry, founded by Luke Tivey. Viking Carpentry is a family run business based in Rayleigh Essex with over 50 years experience...
From £2,320
Experienced extension builder ready to quote for your work. One Sterling Carpentry & Building Services is the best extension builder in Thundersley...
From £3,224
Our services include.
Bathroom design and installation.
Wood flooring.
Plastering and rendering.
Painting a...
From £2,264
Experienced extension builder ready to quote for your work. HIGHLAND CONSTRUCTION is the best extension builder in Thundersley. No obligation free ...
From £2,296
Maple Construction Specialises in Loft and Garage Conversions, Extensions and Orangeries. My team of tradesmen have been working together for nearl...
From £2,080
Experienced extension builder ready to quote for your work. VNV LTD is the best extension builder in Thundersley. No obligation free quotes and man...
From £1,968
Hudson Garden Rooms is an established and experienced local extension builder in Thundersley. Please contact us for a free, no obligation quote and...
From £2,080
DSL Brickwork Ltd is a trusted, professional company with a great reputation to uphold.We are based in Rayleigh (Essex), serving Rayleigh, ...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Thundersley it ranges from £1,968 (Hudson Garden Rooms based in SS12) to £3,224 (LAS Home Improvements based in SS6).
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 Thundersley by posting a job with HaMuch and we will send it to extension builders in Thundersley.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Thundersley | £38 | £251 |
| Install An RSJ near Rayleigh | £39 | £252 |
| Install An RSJ near Canvey Island | £39 | £256 |
| Install An RSJ near Wickford | £39 | £255 |
| Install An RSJ near Basildon | £39 | £251 |
| Install An RSJ near Southend-on-Sea | £37 | £247 |
| Install An RSJ near Stanford-le-Hope | £40 | £254 |
| Install An RSJ near Billericay | £38 | £248 |
| Install An RSJ near Brentwood | £39 | £255 |
| Install An RSJ near Thurrock | £41 | £260 |
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 - £17,661

Two storey extension - £88,241

Build a timber frame extension - £26,161

Build a swimming pool - £81,161

Single storey extension - £58,216

Side return extension - £43,309

Install an RSJ - £2,361

Outbuilding - £10,161

Build a Mansard loft conversion - £52,161

Loft conversion - £35,258

Build a kitchen extension - £42,161

Hip to gable loft conversion - £42,161

Granny annexe - £87,161

Garden office - £10,161

Convert a Garage - £16,161

Garage - £18,661

Build a flat roof extension - £22,161

Build a dormer loft conversion - £42,161

Concrete foundations - £6,411

Convert a bungalow loft - £29,161

Convert a basement - £39,309