Most project owners read their quote from top to bottom and look at the total at the end. This is precisely where costly gaps hide: a typing error that multiplies an item tenfold; whole blocks of costs that are not included in the fixed price; missing work that later appears as a variation. The following six findings come from real, anonymised quote reviews — they show what our review picks up and what project owners would otherwise have missed. The amounts and items are real; identifying details have been removed.
Key points at a glance
- Three patterns keep recurring: pricing errors/implausible items, open-ended costs without a fixed price and missing ancillary work
- A single typing error inflated a quote by almost 9.000 € — 12 % of the total
- In a quote for 66.761,90 €, all quantities were only “approximate” — the amount was not a binding price at all
- Earthworks estimated at around 30.000 € were expressly excluded from the fixed price and had “no upper limit”
- Every finding comes with a plain-language explanation (“What does this mean?”) and a specific recommended action (“What should I do?”) — a single finding pays back the review fee many times over
How our quote review works
You upload your quote as a PDF, our AI-assisted analysis and our reviewers go through it item by item, and you receive a report. Each finding is assessed across several dimensions — clarity of the work, variation risks, scope boundaries and price plausibility — and includes two things in clear language: “What does this mean?” and “What should I do?”. A free initial assessment is available through the Quickcheck, while the full review starts at 79 €. Our guide explains what is generally checked and which other providers are available: Reviewing a building quote. Here, we focus on the findings themselves.
Pattern 1: Pricing errors and implausible items
Finding: a typing error worth almost 9.000 €
The quote stated: Item 30, “50 m of skirting boards” for 9.950 € net — a price of 199 €/m. This single item accounted for 12 per cent of the total quoted amount.
What our review found: 199 € per metre is far above our benchmark figures for skirting boards, including supply, routing and installation. This was very likely an input error — 19,90 € instead of 199 €. At the correct price, the item costs around 995 € instead of 9.950 €: a difference of almost 9.000 €.
Our recommendation: Raise the price per metre directly with the contractor and ask for a correction and a revised quote. If the price is intentional, ask for a precise explanation of what is included and obtain a comparison quote. This is an item that is easy to overlook when focusing on the final total.
Pattern 2: Open-ended costs and variation risks
The most dangerous phrase in a quote is not a high price, but “not a binding price”. Three findings show how an apparent fixed-price total can become an open-ended risk.
Finding: 30.000 € of earthworks excluded from the fixed price
The quote stated: Earthworks for the house and garage were “quoted separately” and expressly excluded from the fixed price — estimated at around 30.000 € in a list of additional costs.
What our review found: Earthworks are among the most unpredictable cost items in housebuilding because the actual work required depends heavily on ground conditions. Without a fixed price in the contract, this block of costs offers no budget certainty; the 30.000 € is explicitly non-binding and has no upper limit.
Our recommendation: Before signing the contract, insist on a specific quote for the earthworks and their inclusion in the contract at a fixed price — or obtain a comparison quote from an earthworks specialist.
Finding: a quote for 66.761,90 € that was not a fixed price
The quote stated: on page 1, that the quantities had been taken from another quote and had not yet been measured on site; billing would be based on actual site measurements.
What our review found: This means the total of 66.761,90 € is an estimate, not a binding price — the final invoice could be significantly higher. Signing here means agreeing to a ballpark figure, not a price.
Our recommendation: Before entering into the contract, insist on binding quantities established through on-site measurements and obtain written confirmation of a fixed price or at least a price cap.
Finding: “1 item” for work that cannot be measured by the item
The quote stated: several items — such as “alteration work to drinking water pipes” (612,50 €) and “insulation work” (192 €) — were priced using the unit “1 item”, even though the work depends on area or linear metres.
What our review found: The basis for the quantities is unclear. If the actual work required exceeds the assumption, the contractor can submit variations — and you have no basis for rejecting them.
Our recommendation: For all lump-sum items, request a written definition of the work included and a quantity to which the price relates.
Pattern 3: Missing work that later appears as a variation
Work left out of the quote still needs to be done — and is then charged separately. You can only spot these gaps if you know the technical steps a trade requires.
Finding: a bathroom quote without breaking out, waterproofing or disposal
The quote stated: only the supply and installation of sanitary fittings.
What our review found: Before a new basin or shower channel can be installed, walls often need chasing, old pipes removing and waterproofing applying. Essential ancillary work — removing and disposing of the old installation, breaking out and chasing, making good plaster, waterproofing (for example around the shower and bath), site setup, rubble disposal and final cleaning — was completely missing. As additional charges, these can quickly add up to several thousand euros.
Our recommendation: Request a written list of all ancillary work (removal, breaking out, filling chases, waterproofing to DIN 18534, disposal, site setup and final cleaning) and clarify what is included in the price and what is not.
Finding: the old roof waterproofing that nobody removes
The quote stated: items for cleaning the roof surface and laying a new EPDM membrane.
What our review found: There was no item for removing and disposing of the old EPDM or bitumen waterproofing — the quote only included “clean roof surface”. If the old membrane needs stripping off, this work is entirely missing and would be charged as a variation.
Our recommendation: Ask explicitly whether removal and disposal of the existing roof waterproofing are included, and obtain written clarification.
What these findings have in common
None of these findings appears in bold print. They are individual items, footnotes and omissions that get lost in a multi-page breakdown — and that a layperson can barely recognise as risks, because spotting them requires knowledge of a trade's technical requirements and normal market prices. This is precisely the value of an independent review: it reveals these gaps before you sign. A single finding — a typing error worth almost 9.000 € or an open-ended earthworks block of 30.000 € — exceeds the review fee of 79 € many times over.
Frequently asked questions
What does a quote review typically find?
Three patterns recur: pricing errors and implausible items (such as a typing error in the price per metre), open-ended costs without a fixed price (quantities “subject to site measurement”, trades quoted separately) and missing ancillary work (removal, breaking out, waterproofing, disposal) that is later charged as a variation. Every finding is explained and accompanied by a specific recommended action.
Are these real examples?
Yes. All findings on this page come from real quote reviews. The amounts and items are real; identifying details relating to clients and projects have been removed. These are not invented examples.
What does a quote review cost and how does it work?
You upload your quote as a PDF, we review it using AI support and experienced reviewers, and deliver a report with findings, explanations and recommended actions. The review starts at 79 €; you can obtain a free initial assessment through the Quickcheck. The “Reviewing a building quote” guide gives a complete overview of the service and costs.
Is it really worth it?
For the findings shown, yes: a typing error worth almost 9.000 €, an open-ended earthworks block of 30.000 € or a bathroom quote missing ancillary work costing four figures — each one significantly exceeds the review fee. The value lies in revealing the risk before you sign, while you can still negotiate.
What should I do if the review finds something?
Every finding includes a specific recommendation — from raising a pricing error and adding a fixed price to the contract to obtaining written clarification of missing work. You can use the report as a basis for speaking to the contractor, requesting a corrected quote or comparing it with a second quote.
Do you have a quote? Upload it for a quote review — or first try the free Quickcheck. Our guide to the following shows you how to identify overpriced quotes yourself: warning signs.
Note on the examples
All findings on this page come from real, anonymised quote reviews by Cleverbauen24. The amounts and items are real; identifying details relating to clients and projects have been removed.
Comments
No comments yet — be the first to contribute.