Level −1.20 Underside of foundation
Outsourced billing department for contractors in Germany. You receive measurements, invoices and priced variations to VOB, issued in your name – every quantity with its workings and a drawing reference.
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You hand over drawings, the bill of quantities and details of work completed to date; you receive verifiable quantities, invoices and priced variations.
VOB (Vergabe- und Vertragsordnung für Bauleistungen) is the German set of standard rules for construction contracts: Part B contains the general conditions of contract, Part C the general technical specifications (ATV) – DIN 18299 for all trades plus one standard per trade, each with its measurement rules in section 5. Part B applies where your contract incorporates it, and Part C applies with it (§ 1(1) sentence 2 VOB/B); where the contract, the bill of quantities or its preambles say otherwise, those provisions take precedence over VOB (§ 1(2) VOB/B).
Measurement to VOB/C, verifiable item by item, with workings, drawing references and marked-up drawing extracts. We also review check measurements and take-offs prepared by others.
Interim invoices and final accounts, drawn up to be verifiable under § 14(1) and § 16(1) VOB/B: every quantity invoiced is substantiated by the measurement. We also check invoices and prepare daywork records.
For changed, additional and uninstructed work, we identify the basis of entitlement under VOB/B and prepare the variation quotation with its price build-up. You submit it in your own name.
Only what can be evidenced goes into a claim.
Enquire about this service: Variation managementEstimates for labour-only work in your tenders. Every unit rate can be traced back to its labour constant (labour hours per unit) and the hourly rate.
Unit rate = labour hours per unit × hourly rate
Enquire about this service: Labour and tender estimatingWe analyse the bill of quantities, plan labour and the programme for the structural shell, and prepare correspondence under VOB/B. Instructions, warnings and delays are recorded as they occur, not only when the work is invoiced.
Our in-house team prepares the detailed design and the structural design for your project.
Enquire about this service: Detailed design and structural designFor every project, our in-house team also prepares the interior design.
Enquire about this service: Interior designPrices for every service are available on request.
Every quantity with its workings.
Five steps from receipt of drawings to handover. Your client can recheck every single quantity; you can see how reliable each labour constant is.
You hand over the drawings with the drawing register and revision status, and the bill of quantities with its preambles. We check the drawing revisions for discrepancies and compare the drawings with the bill of quantities.
Where drawing revisions conflict, the latest one applies; the discrepancy is reported.
The rules are fixed before the first quantity is taken off: the preambles to the bill of quantities, ranking above ATV DIN 18299 ff., and for each element the measurement boundaries and the rules for overmeasuring and deductions.
Every quantity is given its workings and a drawing reference. Dimensions not shown on the drawings are derived transparently and flagged.
Item n, wall on grid line B: L × H − openings above deduction threshold = quantity, drawing ref. with revision
Where prices have to be established, for example for labour-only bids and variations, we check each labour constant against the estimating database. The traffic light shows whether it rests on several matches, a single direct match or manual derivation.
| Symbol | Level | Basis |
|---|---|---|
| group of dots | Green | several database matches (median/mean) |
| single dot | Yellow | single direct match |
| dashed circle | Orange | derived manually |
You receive Excel workbooks with a summary sheet and live formulas rather than hard-coded values, the PDF appendices and the GAEB export – all in your name.
Experience, sites, database and languages in figures.
| Parameter | Value | Basis |
|---|---|---|
| Experience | 10+ years | since 2016 |
| Sites worked on | 200+ sites | since 2016 |
| Currently in progress | ≈26 sites | as at 10/2026 |
| Priced items | 100,000+ items | in-house estimating database |
| Projects in the database | 250+ projects | source of the priced items |
| Working languages | 3 languages | German, Bosnian/Serbian, English |
More than 200 sites since 2016, around 26 currently in progress.
We do not publish project names: our work appears solely under our clients’ names. A reference list with the type of project and the services provided is available on request.
Prime Construction Management d.o.o. works as an outsourced billing department for contractors and subcontractors in Germany.
Briefly describe your project and the service you need. We will reply by email or phone.
We will get back to you by email or phone. If it is urgent, call +49 176 21240171.
