Interim Bill Evaluation & Payment Certification in Muscat, Oman.
Pay for the work done. Nothing more.
- Based in
- Muscat · working across Oman
- Reply time
- Within one business day

What we do
Interim Bill Evaluation & Payment Certification, done properly.
Each interim payment application is checked against the work in place: site measurement, materials on site, variations agreed to date, retention, advance recovery and previous payments. You receive a certified amount with the working behind it, so the contractor is paid fairly and never ahead of the job.
Take this service on its own, or as part of the whole project. Either way, one team in Muscat is accountable for it.
What you get
- 01
Site measurement and progress verification
- 02
Check of the contractor's interim bill against the BOQ
- 03
Materials-on-site and variation assessment
- 04
Retention, advance recovery and deductions
- 05
Payment certificate recommendation
One team
Cost, tender and contract under one roof. One point of contact.
Independent advice
We hold no construction contract, so nothing we recommend pays us more.
Based in Oman
A Muscat office that knows the rules, the climate and the market.
Straight answers
A clear report every month. Good news and bad in the same place.
When you need it
Three moments this pays for itself.
- 01
The contractor's monthly bills are climbing and nobody on your side is checking them.
- 02
You suspect you have paid ahead of the work on site.
- 03
You are a contractor and want your interim applications prepared so they are certified in full.
How we do it in Oman
The way we work.
We measure the work in place on site, check the application line by line against the bill of quantities, assess materials on site and agreed variations, and apply retention, advance recovery and previous payments. You receive a recommended certificate with the working attached, within the payment period the contract sets.
How it works
Five stages. One team.
- 01
Brief
We listen. Site, budget, timeline.
- 02
Budget
A cost plan before the design is fixed.
- 03
Tender
The right contractor, chosen fairly.
- 04
Build
Payments, variations and cost checked every month.
- 05
Final account
Claims settled. Account closed.
Common questions
Interim Bill Evaluation & Payment Certification in Oman, explained.
- How quickly can you evaluate an interim bill?
- Within the certification period in your contract, usually a few working days from a complete application.
- Do you visit the site?
- Yes. Progress is verified on site, not from the contractor's percentages.
- Can you check bills on a project you did not tender?
- Yes. We work from the contract, the BOQ and the payment history.
Cost & contracts
Related services.
- Cost Consultancy & Quantity SurveyingBudgets that hold, from the first estimate.
- Cost Monitoring & ReportingKnow the final cost every month, not at the end.
- Variation Claim AnalysisEvery variation measured, valued and justified.
- Claim SettlementClaims valued fairly, then closed.
- Final Account PreparationOne agreed figure. Project closed.
Also from OGB
Where we work
Based in Muscat. Working across Oman.
Most of our projects are in Muscat Governorate, and our team travels to sites in every governorate. Distance changes the logistics, not the standard.
Scope it with us
Tell us about the project.
The site, the stage it is at and what you need. We reply within one business day with the right scope, even when it is smaller than you expected.
From our Oman briefings
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