Range from the cheapest Side return extension £33,400 (SDW CONSTRUCTION LTD based in SY15) to the dearest Side return extension £35,470 (Cherry Build Limited based in LD1).
Comparing extension builders estimates for Side return extension gives you an idea of who will be better value but the best way to compare costs is to get actual quotes.
What to do - Get rates and quotes for a side return extention by posting your job to extension builders in Caersws.

| Business name | Side return extension cost |
|---|---|
| EVABUILD LIMITED, Llanllwchaiarn, SY16 | £34,300 |
| John Sillitoe Building Contractor, Llanllwchaiarn, SY16 | £34,120 |
| SDW CONSTRUCTION LTD, Montgomery, SY15 | £33,400 |
| Cherry Build Limited, Llandrindod Wells, LD1 | £35,470 |