Bathroom installation (suite supplied by customer or priced separately): calculator for UK builders
Answer the measurements this calculation needs and JobBosh works out the materials with wastage and pack rounding, the labour hours by role, the plant, the waste and the site needs - then prices them from your own figures, a supplier's quotation or a dated price you record. Free, no account needed to start.
What it works out
- Material: Bathroom suite (2 items), taps, wastes - customer-supplied or from the supplier's quotation; Silicone, fixings, tanking kit, trims
- Labour: Strip out old bathroom; Position and fix suite items; Fit shower enclosure / screen
- Waste: Old suite, tiles, boxing (heavy)
- Subcontract: Plumber: first/second fix (see the bathroom plumbing recipe) - by quotation or own plumber; Electrician: shower circuit, extractor, lighting (bathroom zones, Part P) - by quotation
The questions it asks
| Question | Unit / choices | Required? | Help |
|---|---|---|---|
| Suite items (bath, basin, WC, shower ...) | nr | required | |
| Strip out the old bathroom? | yes / no | optional - default yes (labelled assumed) | |
| Shower enclosure / screen to fit? | yes / no | optional - default yes (labelled assumed) |
The norms behind it, with their sources
Coverage, productivity and wastage defaults you can edit; each carries where it comes from and is shown as assumed until your own benchmark replaces it.
| Norm | Value | Source | Tier |
|---|---|---|---|
| Fit one suite item (builder's part: position, fix, seal) | 3 hr | trade practice | assumed |
| Strip out a bathroom | 8 hr | trade practice | assumed |
| Fit a shower enclosure / screen | 4 hr | trade practice | assumed |
A worked example
Answers used: Suite items (bath, basin, WC, shower ...) 2 nr; Strip out the old bathroom? yes; Shower enclosure / screen to fit? yes. These are the recipe's own quantities for those answers - the prices are yours, the supplier's or a quotation's, never a figure typed on a web page.
| Kind | Line | Quantity | How it is worked out |
|---|---|---|---|
| material | Bathroom suite (2 items), taps, wastes - customer-supplied or from the supplier's quotation | 1 item | needs a quotation or your figure - never invented |
| material | Silicone, fixings, tanking kit, trims | 1 item | one allowance |
| labour | Strip out old bathroom | 8 hr | 8 h |
| waste | Old suite, tiles, boxing (heavy) | 3 m3 | ~3 m3 |
| labour | Position and fix suite items | 6 hr | 2 x 3 h |
| labour | Fit shower enclosure / screen | 4 hr | 4 h |
| subcontract | Plumber: first/second fix (see the bathroom plumbing recipe) - by quotation or own plumber | 1 item | needs a quotation or your figure - never invented |
| subcontract | Electrician: shower circuit, extractor, lighting (bathroom zones, Part P) - by quotation | 1 item | needs a quotation or your figure - never invented |
Labour on this example: about 18 hours across the roles; at your rates it becomes money.
Site questions this work raises: Protection and cleanliness, Utilities and welfare, Waste, Site access and neighbours.
Specialists or hire it may need, drafted as enquiries from the job's facts: Skip hire, Plumber / heating engineer, Electrician (registered).
Tiling and decorating are separate recipes; add them.
Then what
Price the lines from your crew rates and your material prices (each with its source and date), answer the site questions (parking, skip, welfare, power, water, protection), let JobBosh draft the supplier enquiries you approve, and issue a branded quotation your customer accepts on a secure link. Guest work is kept for 14 days; a free account keeps it for good.
Start a bathroom installation (suite supplied by customer or priced separately) job now