These are indicative worked examples to show the structure. In the app every line, quantity, rate and allowance is editable, and the totals recalculate instantly.
Example 1 — house building estimate (elemental)
Assumptions: 150 m² two-storey detached, masonry cavity wall, concrete tile roof, double glazing, standard finishes. Indicative only — verify against supplier quotes.
| Element | Indicative cost |
|---|---|
| Substructure (foundations, ground slab) | £22,000 |
| Superstructure (frame, cavity walls + insulation, roof, windows/doors) | £78,000 |
| Internal finishes (plaster, floors, ceilings) | £24,000 |
| Services (M&E, heating, plumbing, electrics) | £28,000 |
| External works & drainage | £14,000 |
| Direct cost | £166,000 |
| Preliminaries (8%) | £13,280 |
| Overheads & profit (15%) | £26,892 |
| Contingency (3%) | £6,185 |
| Net | £212,357 |
| VAT (20%) | £42,471 |
| Gross | £254,828 |
Example 2 — groundworks estimate
Assumptions: 1-acre site, bulk earthworks, drainage, sub-base, kerbs and tarmac to a parking area. Indicative only.
| Work section | Qty | Unit | Indicative |
|---|---|---|---|
| Site strip & topsoil | 4,000 | m² | £16,000 |
| Bulk earthworks excavation | 1,200 | m³ | £10,800 |
| Muck-away / disposal | 1,200 | m³ | £26,400 |
| Storm & foul drainage | 300 | m | £13,500 |
| Sub-base (Type 1) | 900 | m³ | £40,500 |
| Kerbs | 400 | m | £15,200 |
| Tarmac surfacing to parking | 2,000 | m² | £96,000 |
| Plant, fuel & site management | 1 | item | £28,000 |
Open the AI Project Designer or the estimator to build and edit a plan like these for your own project.