Is your contractor quotation accurate?
We help you understand and verify your contractor's quotation. Send us your drawings, tender BOQ, and the contractor quotation. We systematically review the documents to spot missing items, unusual unit prices, and quantity differences before you sign.
Drawings Cross-Check
We extract quantities straight from CAD and PDF architectural sets to calculate actual required volumes.
Omission & Missing Item Detection
Unlisted scope items frequently return as costly variation orders mid-build. We flag gaps upfront.
Independent Pricing Baseline
We review contractor line-item unit rates against prevailing UAE market averages for labour and materials.
Substructure Waterproofing Membrane
Grade 40 Reinforced Foundation Concrete
External Porcelain Cladding & Sub-frame
Typical finding: Waterproofing omissions and miscalculated foundation volumes account for over 65% of unexpected variation claims in UAE residential builds.
Quotation Analysis Checklist
We help you understand and verify your contractor's quotation. Compare typical contractor blind spots against WISEBUILD independent quantity auditing to protect your capital before breaking ground.
Average unbudgeted variation cost on unverified villa tenders in the UAE.
Every trade cross-referenced against architectural, MEP, and structural sheets.
A line-by-line verification report showing missing items and unusual quantities.
| Trade / Scope Parameter | Unverified Contractor Bid | WISEBUILD Verified Tender File |
|---|---|---|
Concrete Substructure & Foundations High ExposureSEC-01 | Lump-sum estimation without detailed bar-bending schedule or soil re-test factor High risk of variation claims (+18% to +25%) during excavation and blinding | Volumetric concrete take-off matched against structural CAD drawings with rebar ratios Audit Value: Locked rebar tonnage; eliminated variation leakage |
MEP, HVAC & Sanitary Infrastructure High ExposureSEC-02 | Single line-item provisional sum (AED 180,000) lacking equipment schedules Omission of chiller tonnage limits, duct gauges, and drainage containment lines | Itemized Bill of Quantities with ductwork areas, CFM loads, and fixture schedules Audit Value: AED 64,000 hidden omissions identified before contract signing |
Waterproofing & Subterranean Tanking Audit RequiredSEC-03 | Generic 'membrane waterproofing' noted with unspecified warranty and mil thickness Failure risk; sub-contractor exclusions for perimeter drainage protection | Specified multi-layer SBS torch-applied membrane with test protocols and guarantee clauses Audit Value: Zero scope ambiguity; 10-year systemic warranty mandated |
Finishes, Joinery & Millwork Audit RequiredSEC-04 | Vague PC rates for porcelain flooring and undisclosed joinery carcass materials Contractor substitutes substandard MDF or demands price adjustments post-award | Exact square-meterage take-off, substrate preparation, and fire-rated carcass specs Audit Value: Strict material benchmark established with no markup surprises |
External Works, Pools & Hardscape High ExposureSEC-05 | Boundary wall footing depth unmeasured; swimming pool filtration equipment omitted Secondary contractor quotation required later (+AED 95,000 unplanned capex) | Complete civil and hydraulic schedules including balance tank and coping detail Audit Value: Comprehensive project perimeter pricing consolidated into tender |
Contract Terms & Contingency Allowances Audit RequiredSEC-06 | Ambiguous 10% advance with open-ended delivery milestones and zero penalty clauses Owner exposed to cashflow drain and protracted villa completion delays | Milestone-based retention schedule linked to certified quantity milestones Audit Value: Balanced cash-outflow aligned strictly with on-site progress |
Standard audit review covers Bill of Quantities, architectural CAD files, MEP schematics, and structural drawings for villa and renovation projects across the UAE.
Is your contractor quotation accurate?
Upload your drawings, contractor quotation, and BOQ. WISEBUILD reviews the available documentation to provide a comprehensive cost and quantity verification report highlighting missing items, unusual quantities, and pricing gaps.