Kitchen installation (units 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: Kitchen units (2), doors, handles, plinths - customer-supplied or priced from the supplier's quotation; Laminate worktop; Fixings, brackets, silicone, end caps, joint bolts
- Labour: Strip out old kitchen; Fit units, doors, plinths; Cut and fit worktop
- Waste: Old kitchen units, worktops, packaging
- Subcontract: Plumber: sink, dishwasher, washing machine connections (3 appliances) - by quotation or own plumber; Electrician: cooker circuit, sockets, lighting - by quotation, certified
The questions it asks
| Question | Unit / choices | Required? | Help |
|---|---|---|---|
| Base + wall units | nr | required | |
| Worktop length | m | required | |
| Worktop | one of: laminate, solid wood, quartz granite template | optional - default laminate (labelled assumed) | |
| Strip out the old kitchen? | yes / no | optional - default yes (labelled assumed) | |
| Appliances to connect | nr | optional - default 3 (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 a unit incl. doors, handles, plinth share | 1.25 hr | trade practice | assumed |
| Cut and fit laminate worktop per metre incl. joints | 1 hr/m | trade practice | assumed |
| Strip out a kitchen | 8 hr | trade practice | assumed |
A worked example
Answers used: Base + wall units 2 nr; Worktop length 4 m; Worktop laminate; Strip out the old kitchen? yes; Appliances to connect 3 nr. 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 | Kitchen units (2), doors, handles, plinths - customer-supplied or priced from the supplier's quotation | 1 item | needs a quotation or your figure - never invented |
| material | Laminate worktop | 4.6 m 2 x length - 3 m lengths | 4 m +15 % |
| material | Fixings, brackets, silicone, end caps, joint bolts | 1 item | one allowance |
| labour | Strip out old kitchen | 8 hr | 8 h |
| waste | Old kitchen units, worktops, packaging | 4 m3 | ~4 m3 (a 6-yard skip) |
| labour | Fit units, doors, plinths | 2.5 hr | 2 x 1.25 h |
| labour | Cut and fit worktop | 4 hr | 4 m x 1 h/m |
| subcontract | Plumber: sink, dishwasher, washing machine connections (3 appliances) - by quotation or own plumber | 1 item | needs a quotation or your figure - never invented |
| subcontract | Electrician: cooker circuit, sockets, lighting - by quotation, certified | 1 item | needs a quotation or your figure - never invented |
Labour on this example: about 14.5 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, Commercial and contract.
Specialists or hire it may need, drafted as enquiries from the job's facts: Skip hire, Plumber / heating engineer, Electrician (registered).
Tiling, decorating and flooring are their own recipes: add them to the project so nothing is forgotten.
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 kitchen installation (units supplied by customer or priced separately) job now