Dima Platonovs
Boston, PE21
Need an Extension Builder in Boston? D H S Dima Home Improvement Services has been helping local clients (20 mile radius) with their extension buil...

How much RSJs cost for supply and installation varies depending on the size, type and load-bearing properties, but in Boston it ranges from £2,680 (D H S Dima Home Improvement Services based in PE21) to £2,680 (D H S Dima Home Improvement Services based in PE21).
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 Boston by posting a job with HaMuch and we will send it to extension builders in Boston.
| Location in UK | Hourly Rate | Daily Rate |
|---|---|---|
| Install An RSJ near Boston | £28 | £262 |
| Install An RSJ near Spalding | £32 | £238 |
| Install An RSJ near Wisbech | £34 | £255 |
| Install An RSJ near East Lindsey | £27 | £198 |
| Install An RSJ near King's Lynn | £33 | £254 |
| Install An RSJ near Kings Lynn & West Norfolk | £31 | £238 |
| Install An RSJ near Grantham | £38 | £228 |
| Install An RSJ near Stamford | £35 | £248 |
| Install An RSJ near Peterborough | £40 | £281 |
| Install An RSJ near Lincoln | £31 | £232 |
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 - £17,980

Two storey extension - £88,720

Build a timber frame extension - £26,480

Build a swimming pool - £81,480

Single storey extension - £64,600

Side return extension - £46,900

Install an RSJ - £2,680

Outbuilding - £10,480

Build a Mansard loft conversion - £52,480

Loft conversion - £38,250

Build a kitchen extension - £42,480

Hip to gable loft conversion - £42,480

Granny annexe - £87,480

Garden office - £10,480

Convert a Garage - £16,480

Garage - £18,980

Build a flat roof extension - £22,480

Build a dormer loft conversion - £42,480

Concrete foundations - £6,730

Convert a bungalow loft - £29,480

Convert a basement - £42,900