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Sample report

Two quotes for the same extension, side by side

This is a worked example, not a customer's job. The builders and the figures are made up, but the report is laid out exactly as yours would be: every line read, the gaps priced, and both quotes put on the same basis.

The same job, two quotes

Rear extension, Guildford. Example project, illustrative figures.

Hartley Building Ltd is £6,480 cheaper on paper. It is also the quote with no drainage, no building control fee and no waste removal. Price the missing work back in and the order changes.

  • Hartley Building Ltd

    As quoted
    £38,420
    Missing work
    £8,480
    Same basis
    £46,900

    What it leaves out

    • Building control fee and structural calculations£1,850
    • Drainage connection to the existing run£4,200
    • Waste removal and skip hire£1,180
    • Reinstating the path where the drain trench runs£1,250

  • Marchmont Construction Ltd

    Cheaper for the same work
    As quoted
    £44,900
    Missing work
    £900
    Same basis
    £45,800

    What it leaves out

    • Decoration to the two new rooms£900

The cheaper quote is the dearer job. For the same work, Marchmont Construction Ltd comes in £1,100 under Hartley Building Ltd.

The full read on Hartley Building Ltd

Rear extension, Guildford

Single storey rear extension, 28 m², standard specification

4 findings
Quote total£38,420including VAT
Findings4of 34 lines checked
Unpriced work£8,480allowance for what the quote leaves out
Same basis£46,900quote plus that allowance
Scaffolding is above the local rangeAbove range
Scaffolding at £2,400 is around 30% above what we usually see for a two-storey rear in Surrey.
£2,400 quoted · £1,600–£1,900 typical · 1,240 comparable quotes
No line for building control on the new openingReg risk
There is no line for structural calculations or building control sign-off, and an opening of this span needs both.
£3,180 quoted · 3.2m span · 0 lines for sign-off
Making good is not broken downWorth asking
The quote does not say which rooms the making good covers.
£1,240 quoted · 0 rooms named
The allowance is a placeholder, not a priceWorth asking
An allowance is a placeholder rather than a price, so it is worth asking what it would be spent on.
£1,500 quoted · allowance, not a fixed price

Trade by trade

Groundworks and foundations
£6,412£5,800–£7,400
Masonry and blockwork
£5,400£4,900–£6,200
Roof structure and covering
£3,950£3,400–£4,600
Windows and external doors
£5,150£4,600–£6,100
Structural steel to rear opening

Priced fairly, but nothing in the quote covers the calculations or the sign-off.

£3,180£2,900–£3,600
Electrics, first and second fix
£2,650£2,300–£3,100
Plumbing and heating alterations
£1,950£1,700–£2,400
Render to rear elevation
£4,588£4,292–£4,884
Scaffolding

30% above the local range for a six-week hire.

£2,400£1,600–£1,900
Making good to plasterwork

The quote does not say which rooms this covers.

£1,240No comparable rate
Allowance for unforeseen works

An allowance is a placeholder rather than a price.

£1,500No comparable rate
Quote total, including VAT£38,420

What each quote covers

Groundworks and foundationsHartley Building Ltd:IncludedMarchmont Construction Ltd:Included
Masonry and blockworkHartley Building Ltd:IncludedMarchmont Construction Ltd:Included
Structural steel to rear openingHartley Building Ltd:IncludedMarchmont Construction Ltd:Included
Roof structure and coveringHartley Building Ltd:IncludedMarchmont Construction Ltd:Included
Windows and external doorsHartley Building Ltd:IncludedMarchmont Construction Ltd:Included
Electrics, first and second fixHartley Building Ltd:IncludedMarchmont Construction Ltd:Included
Plumbing and heating alterationsHartley Building Ltd:IncludedMarchmont Construction Ltd:Included
Render to rear elevationHartley Building Ltd:IncludedMarchmont Construction Ltd:Included
ScaffoldingHartley Building Ltd:IncludedMarchmont Construction Ltd:Included
Making good to plasterworkHartley Building Ltd:UnclearMarchmont Construction Ltd:Included
Decoration to the two new roomsHartley Building Ltd:UnclearMarchmont Construction Ltd:Not included
Building control fee and structural calculationsHartley Building Ltd:Not includedMarchmont Construction Ltd:Included
Drainage connection to the existing runHartley Building Ltd:Not includedMarchmont Construction Ltd:Included
Waste removal and skip hireHartley Building Ltd:Not includedMarchmont Construction Ltd:Included
Reinstating the path where the drain trench runsHartley Building Ltd:Not includedMarchmont Construction Ltd:Included

34 lines read on the Hartley Building Ltd quote and 29 on the Marchmont Construction Ltd quote, rolled up here into the work a rear extension needs.

An example, with invented builders and invented figures. Your report is built from the quotes you upload, and the local ranges come from comparable work in your postcode.

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