Interim Certificates
Interim Certificates,
What’s executed is measured. What’s measured is certified. What’s certified… gets paid.
What is an Interim Certificate?
An Interim Certificate is the monthly document that confirms the portion of the works actually carried out, expressed in measured quantities and monetary value.
It enables the contractor to invoice those works to the employer.
Each certificate must be backed by real measurements and must be reviewed and validated by the Contract Administrator (Dirección Facultativa).
This is not mere paperwork: it is the backbone of the project’s cost control.
Interim Certificates
What does a robust technical certificate include?
- A detailed schedule of executed items, with their measured quantities.
- Application of the agreed unit rates from the approved bill/contract.
- A monthly summary of the amount due.
- Cumulative control of the project’s certified value and progress.
- Contractor’s signature and validation by the Works Supervisor.
Interim Certificates
Who needs this service?
- Contractors, to justify their monthly applications for payment.
- Employers/Developers, to maintain technical and financial control of progress.
- Design team / Contract Administration, to verify that what is paid matches what has been executed.
Why is it so important?
It is the only document that authorises the contractor’s monthly payment.
It prevents certification of works not done or over-valued.
It enables financial control and early detection of deviations.
It is key documentary evidence in case of disputes, claims, or expert reports.
Interim Certificates
Key benefits:
- Full transparency in payments and progress.
- Avoids cost overruns and surprises.
- Solid basis for tax and financing records.
- Protection for both employer and contractor.
On a construction project, you don’t pay what’s promised.
You pay what is measured, executed, and certified.
A well-prepared certificate keeps the job under control.
A poorly prepared one… opens the door to financial trouble.
