Prescribed Building Professional (PBP) and/ or Prescribed Registered Contractors (PRC), i.e. the Appointed Persons, qualified to carry out safety validation for the various types of unauthorised signboards are summarized as follows:
| Appointed Person | Corresponding class of minor works of the unauthorised signboard | ||
|---|---|---|---|
Class I |
Class II |
Class III |
|
| Prescibed Building Professional (PBP) | |||
| Authorised Person (AP) |  (1) |
|
|
| Registered Structural Engineer (RSE) | (1) |
|
|
| Registered Inspector(RI)(2) | --- | |
|
| Prescribed Registered Contractors (PRC)(3) | |||
| Registered General Building Contractor (RGBC) | --- | |
|
| Registered Minor Works Contractor (RMWC) (Company) registered for Class I minor works or RMWC (Company) registered for Class II and Type C minor works | --- | |
|
| RMWC (Company) registered for Class III and Type C minor works or RMWC (Individual) registered for minor works items 3.16 & 3.17 | --- | --- | |
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Notes:
- Only an AP is required to be appointed for validation of unauthorised signboards corresponding to Class I minor works. However, if the unauthorised signboards are not a specified construction (specified construction means a construction that satisfies all the criteria under section 37(4) of the B(MW)R), both AP and RSE are required to be appointed.
- RI may be appointed to validate unauthorised signboards falling within the description of the corresponding Class II or III minor works regardless whether the parent building to which signboards are attached is a building served with statutory notices under the Mandatory Building Inspection Scheme.
- RGBC or RMWC registered for corresponding class and type of minor works must be appointed if alteration/strengthening works are involved.