CF1R, CF2R and CF3R: the compliance chain explained

Residential Title 24 compliance is not one document. It is a chain of three, produced by three different parties at three different points in the project, and it is broken far more often than people expect.

CF1R — Certificate of Compliance

The design-stage document, produced by the energy consultant from your plans and submitted with the permit application. It demonstrates that the building as designed meets the standards for its climate zone. It also specifies which measures the compliance depends on — and that specification is what drives everything downstream.

CF2R — Certificate of Installation

Completed by the installing contractor as work is finished, confirming what was actually built matches what was modelled. Different trades complete different CF2R forms for their own scope. Incorrectly completed CF2Rs are a common cause of stalled registration, because the chain cannot advance without them.

CF3R — Certificate of Verification

Issued by a certified ECC-Rater after field testing, confirming by measurement that the installed measures perform as the model assumed. Raters are certified through a CEC-approved ECC-Provider, and results are registered with an approved data registry.

Where the chain breaks

Almost always in the same place: the CF1R specifies a measure requiring ECC verification, nobody reads that part, no rater is engaged, and the omission surfaces at final inspection when the building department looks for a registered CF3R that does not exist.

At that point the options are all bad. Some measures can still be tested late. Others — QII in particular, which must be verified before insulation is covered — cannot be verified retroactively at all, which means remodelling the compliance approach around a measure you can no longer claim.

The nonresidential equivalents

Commercial projects follow a parallel series: NRCC at design, NRCI for installation, and NRCA for acceptance testing. The failure mode is identical — acceptance testing left unscoped until closeout, then holding up the certificate of occupancy.

How to avoid it

Read the verification requirements on the CF1R when you receive it, not when the inspector asks. A consultant who flags them clearly on the document, and asks about your construction programme, is doing you a larger favour than one who quotes twenty dollars less.