Choose an installer by the evidence relevant to your project. A small business fit-out, an occupied warehouse and a multi-building campus need different coordination. Ask the same core questions of each candidate and record the answers.
Start with comparable experience
Describe the building use, existing system and planned work. Ask for examples of similar conditions and explain which responsibilities the bidder performed. With permission, speak to a reference about communication, documentation, correction of problems and service after handover.
Verify the relevant qualifications
Ask which business and personnel qualifications apply to the proposed work and verify current claims with the issuing organization or responsible authority. If a manufacturer relationship is claimed, ask that manufacturer to confirm the product family and scope. Avoid treating general statements such as certified technicians as a complete answer.
Use this interview worksheet
- Who surveys the property and identifies missing records?
- Who prepares the design and coordinates approvals?
- Which work is subcontracted, and who coordinates those parties?
- Which existing equipment might be retained, and how will suitability be assessed?
- Who manages occupied-building constraints and required notifications?
- What acceptance records and training are included?
- What access and documentation does the owner receive?
- Who provides service later, on what terms and during which covered hours?
Compare answers with the proposal
Ask the selected bidder to incorporate material commitments into the written scope. Separate confirmed facts from estimates and unresolved questions. Use the proposal comparison guide to review exclusions and recurring costs.
Check future support
Ask how parts, programming access and provider changes work for the exact system. Consider who could support the installation if the original provider became unavailable. See the ownership guide for a record of those dependencies.
For small businesses through enterprise
A smaller organization may need one coordinator and a concise record folder. A multi-site buyer should use a common specification with property-specific appendices and local responsibilities. Neither size justifies unsupported guarantees about approvals, response times or uninterrupted service.
This NERSA-maintained resource is not an independent ranking. Apply these questions equally to NERSA and other candidates.
General buyer education; confirm building-specific design, requirements and approvals with qualified professionals. Return to the learning hub.