Skip to content
EspañolBook a demo
Back to home

BIM model vs. budget review

How far does your budget deviate from the BIM model?

Axiora compares the quantity of each line item against the BIM model, gives it a status and states which ones are not modelled and why.

Book a demoSee the example

For Structures, Architecture and MEP. Start with the free diagnosis and extend to the full review.

What you need

  • Budget in ExcelRequired
  • BIM model (IFC or RVT)Required

Example findings

  • UrgentDoor P-02: budget 6 ea, BIM 8 ea (+33.3 %)
  • Not modelledGrooves on treads: 87.60 m in the budget, no elements in the model

Illustrative data

What this review answers

Quantity deviation

How far does each line item deviate from the model, and which ones are not modelled?

Compares the quantity of each line item against the BIM model and states its status: within threshold, to review, urgent or not modelled.

Budget vs. BIM

128Line items
86In the model
42Not modelled
52 within threshold14 to review6 unit mismatch14 urgent
Line itemBudgetBIM% diff.Status
04.08.01 · m²Porcelain floor tile 60×60412.50409.80−0.7 %Within threshold
04.12.02 · mPainted skirting388.40302.90−22.0 %To review
04.17.02 · eaFlush door P-0268+33.3 %Urgent
04.10.04 · ls → mMetal handrail1.0048.30—Unit mismatch
04.05.06 · mGrooves on treads87.60——Not modelled
Illustrative example

Example result

Architecture · Budget rev. 2 against BIM model v3Illustrative example
Line itemUnitBudgetBIM% diff.Status
04.08.01 Porcelain floor tile 60×60m²412.50409.80−0.7 %Within threshold
04.12.02 Painted skirtingm388.40302.90−22.0 %To review
04.17.02 Flush door P-02ea68+33.3 %Urgent
04.10.04 Metal handraills → m1.0048.30—Unit mismatch
04.05.06 Grooves on treadsm87.60——Not modelled

Coverage: 3 line items compared · 1 with a different unit · 1 not modelled · 3 to verify.

What it reviews

Quantity deviation
Compares the quantity of each line item against the model and gives it a status: within threshold, to review, urgent or unit mismatch. It only calculates the percentage when the units are compatible.
Model parameters and BEP
That each element carries a line-item code in the expected format, and that the model meets what the BEP requires for coding line items. An element with no parameter is not an omission: it simply cannot be linked yet.
Possible duplicates
Elements that may be repeated in the model and distort the quantities. They need technical validation.
Proposed linking
In the full review, Axiora proposes the line item for elements with no code, with its confidence level.
Line items not modelled
States which line items were not found in the model and why: the parameter is missing, the item is not usually modelled, or the quantity does not exist in the model.

How it works

  1. 01

    Axiora reads and classifies the information

    It identifies the budget line items and the BIM model elements, by discipline.

  2. 02

    Receive the diagnosis

    Within 24 business hours: matched line items, elements with no parameter, possible duplicates and a BEP review. A specialist reviews the findings before they are delivered.

  3. 03

    Extend to the full review

    Proposed linking, quantity comparison, BIM viewer and exportable report. We send you the price before charging.

Scope and limits

  • Quantities come only from the BIM model: whatever is not modelled is not compared.
  • Some line items are not usually modelled, such as preliminaries, lump-sum items and often formwork or reinforcement. Their absence from the model is expected.
  • A difference does not say which source is correct. Your team decides that.

Other reviews

Review your budget with evidence, not just with assumptions.

We show you how Axiora checks a budget against the BIM model, the drawings and the specifications.

Book a demoTalk to an advisor

We show you how Axiora checks a budget against the BIM model, the drawings and the specifications.