From £2,624
Nouvell Decor is a trusted extension builder serving customers in AL7 and the surrounding area. Contact us to today to get a competitive quote for ...
From £2,184
JK Doors is a trusted extension builder serving customers in AL7 and the surrounding area. Contact us to today to get a competitive quote for exten...
From £2,592
Need an Extension Builder in AL7? Samuele Paolini has been helping local clients (5 mile radius) with their extension buildering jobs for many yea...
From £2,248
Trusted and professional extension builder in AL7. Experienced in all extension buildering work and keeping within budget and on quote. WHITE EAGLE...
From £2,384
Experienced extension builder ready to quote for your work. CC&D BUILDING LTD is the best extension builder in AL7. No obligation free quotes and m...
From £2,760
Our homes need to be regularly maintained and from time to time they need to be rejuvenated, modernised and enhanced. When it comes to building wor...
From £2,296
Experienced extension builder ready to quote for your work. Mr is the best extension builder in AL7. No obligation free quotes and many happy custo...
From £2,392
NIECEIC / NAAPIT GASSAFE WATER REGULATIONS We offer services towards completion of high end construction projects to dis...
From £2,512
skilled worker who specializes in completing a wide range of building and renovation projects
From £2,096
Experienced extension builder ready to quote for your work. Jhon is the best extension builder in AL7. No obligation free quotes and many happy cus...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in AL7 it ranges from £2,096 (Jhon based in IG1) to £2,760 (Rafix Building based in EN4).
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 AL7 by posting a job with HaMuch and we will send it to extension builders in AL7.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Welwyn Garden City | £42 | £268 |
| Install An RSJ near Hatfield | £64 | £283 |
| Install An RSJ near Hertford | £46 | £289 |
| Install An RSJ near Potters Bar | £43 | £273 |
| Install An RSJ near Harpenden | £86 | £315 |
| Install An RSJ near St Albans | £63 | £288 |
| Install An RSJ near Ware | £47 | £296 |
| Install An RSJ near Cheshunt | £48 | £285 |
| Install An RSJ near Stevenage | £44 | £282 |
| Install An RSJ near Hoddesdon | £46 | £296 |
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 - £17,709

Two storey extension - £88,313

Build a timber frame extension - £26,209

Build a swimming pool - £81,209

Single storey extension - £59,176

Side return extension - £43,849

Install an RSJ - £2,409

Outbuilding - £10,209

Build a Mansard loft conversion - £52,209

Loft conversion - £35,708

Build a kitchen extension - £42,209

Hip to gable loft conversion - £42,209

Granny annexe - £87,209

Garden office - £10,209

Convert a Garage - £16,209

Garage - £18,709

Build a flat roof extension - £22,209

Build a dormer loft conversion - £42,209

Concrete foundations - £6,459

Convert a bungalow loft - £29,209

Convert a basement - £39,849