Fictional demo. Computed live by the estimating engine from a template's default answers, default labour rates and dated catalogue allowances. It is not a real business, customer or supplier price.

Live demo

Garage conversion

16.5 m² internal · £18,280.80 inc. VAT

Builder's view (internal)Customer's view

Example Builders Ltd (fictional)

Quotation DEMO-0001

Awaiting your response

Total including VAT

£18,280.80

£15,234.00 before VAT
VAT at 20% · VAT £3,046.80

This quotation sets out the work, the price and what is provisional. Please read the assumptions and exclusions before accepting.

What we will build

Garage conversion: 5.5m × 3m (internal), approximately 16.5 m² internal floor area.
Walls: existing walls retained, insulated and lined internally.
Roof: existing roof retained; insulation upgraded to meet building regulations.
Floor: existing floor retained; damp-proof membrane, insulation and new deck laid over it.
Windows and doors: 1 × window 1.8×1.2m.
Completed to: complete finish (standard specification).
Services: 8 power points, 4 light fittings, radiators from the existing system.

Price breakdown

Preliminaries & site setup

Site set-up, welfare, protection and management

£714.16Excavation & foundations

Excavation, foundations and below-ground masonry

£605.05Floors

Ground floor construction, insulation and screed

£1,013.71External walls

External walls, insulation and outside finish

£1,216.72Windows & external doors

Windows, external doors and rooflights

£1,587.02Plumbing & heating

Heating and plumbing

£863.60Electrical

Electrical installation

£1,132.07Insulation & internal linings

Insulation, plasterboard and ceilings

£2,818.22Internal finishes

Plastering, joinery, decoration and flooring

£3,220.32Waste removal

Skips and waste removal

£423.21Deliveries

Material deliveries

£330.63Testing & certification

Testing and certification

£119.03Fees & approvals

Building control and approvals

£1,190.26Total before VAT£15,234.00VAT at 20%£3,046.80Total£18,280.80

Assumptions this price relies on

Existing slab is sound and level; a damp-proof membrane, 100mm insulation and a new deck are laid over it.
Existing flat roof is sound; 120mm insulation added between/under joists and a new ceiling.
The existing consumer unit has spare capacity for the new circuits; if not, a new unit is extra.
Heating: 2 radiators added to the existing system; the existing boiler is assumed to have capacity.
No planning application fee, party wall surveyor or planning drawings are included. Permitted development or existing consent is assumed.
Work to comply with the building regulations applying in England; design by others where a design is required.
Garage door infill to match existing brickwork; a matching brick is assumed available.

Not included

Planning application, drawings and party wall matters
Furniture, appliances and loose fittings
Landscaping and reinstatement beyond the working area
Anything found on opening up that could not be seen at survey
Repairs to the existing roof or walls

Programme, validity and payment

Estimated time on site: about 2 weeks, subject to weather, materials and approvals.
Payment in stages:
Deposit on acceptance 10% £1,828.08
Watertight shell 40% £7,312.32
First and second fix complete 30% £5,484.24
Completion and handover 20% £3,656.16
Payment: Each stage is invoiced when it is reached and is due within 7 days.

Example Builders Ltd (fictional) · 1 Example Street, Andover · 01234 567890 · hello@example.invalid

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Deposit on acceptance	10%	£1,828.08
Watertight shell	40%	£7,312.32
First and second fix complete	30%	£5,484.24
Completion and handover	20%	£3,656.16