A useful proposal explains what will be delivered, what depends on someone else and what remains your responsibility. Compare bids against the same project brief. A lower price is difficult to assess when the scope or ongoing obligations differ.
Compare six parts of the scope
- Design: responsibility for the design basis, drawings, calculations, submissions and responses to review comments.
- Equipment: exact product families, quantities, approved compatibility, reuse assumptions and the process for substitutions.
- Installation: pathways, power, access equipment, work hours, occupied areas, labeling and making good disturbed finishes.
- Coordination: other trades, monitoring provider, building management, approvals and acceptance attendance.
- Handover: test records, drawings reflecting the installation, manuals, configuration records, authorized access and staff training.
- Ongoing costs: monitoring, communications, inspection and testing arrangements, repairs, travel, software access and future changes.
Ask for evidence, not adjectives
Request relevant qualifications and verify their applicability to this work. Ask the manufacturer to confirm any claimed authorization for the quoted product family. A business license, personal credential and manufacturer training are different things. Ask for examples of comparable building conditions and a reference you have permission to contact.
Keep an exceptions register
For each line item, record included / excluded / unclear; the supporting proposal section; the question sent; the answer received; and any price or schedule effect. Mark missing information as unconfirmed. Convert verbal answers into an agreed written scope before selecting a bid.
Compare costs over the same period
Use a common planning period, such as five years, without treating that period as an equipment lifespan. Separate installation, recurring services, planned upkeep, likely changes and eventual migration. Identify fixed prices, estimates and renewal provisions. Avoid counting a prepaid service twice.
Make the selection record useful later
Record the chosen scope, unresolved conditions, acceptance evidence, warranty exclusions and escalation contacts. For a small business, one named coordinator may hold this record. An enterprise should add a site appendix and responsibility matrix. Apply the same selection questions to NERSA and every other bidder.
General buyer education; confirm building-specific design, requirements and approvals with qualified professionals. Return to the learning hub.