Job Book 9th Edition - Book - Page 274
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Stage 5 > Construction: Supplementary Material: 5/SM10
5/SM10: Issuing certificates
(actions for the contract administrator)
Building contracts generally provide for the issue of certificates by the contract
administrator. The issue will normally be an obligation, always subject to certain
conditions being satisfied. A certificate is simply a statement of fact, and although
a letter might constitute a certificate, it is advisable to establish at the beginning
of the job that valid certificates will be those issued on a standard form. Refer to
the RIBA Agreements Reference Set for guidance on use of the forms. Under the
JCT Standard Building Contract 2011 (SBC 11) the following certificates are used:
Interim Certificate
This is for payment to the contractor of an instalment of the contract sum. It might
be on a monthly valuation (although the contract administrator when certifying
must use skill and care, and not blindly follow the cost consultant’s valuation),
on a stage or milestone basis as agreed by the parties and in accordance with
the contract conditions.
Statement of Retention
These should be attached to the Interim Certificate and show the gross valuation
of work done, identification of amounts subject to full retention, half retention
and nil retention and the calculation of amounts of retention, which should be
transferred to the Interim Certificate.
Section Completion Certificate
These are for use where the Building Contract provides for the work to be carried
out in phases.
Statement of Partial Possession
Where the Building Contract makes provision for this, the employer may take
possession of a part or parts of the works ahead of Practical Completion of the
whole of the works. It requires agreement of the contractor, which cannot be
unreasonable withheld.
Notification of revision to Completion Date
For use where an extension of time has been given, work has been omitted or
in the final review following Practical Completion.
Non-Completion Certificate
A factual statement, upon which much may depend, e.g. the deduction of
liquidated damages by the employer, or the right to deduct damages by a main
contractor against a named subcontractor.
