What should come back from the estimator?
Ask for more than a total. A reviewable estimate connects the measured item to its drawing or schedule, then shows the pricing input, package and scope note used by the estimator.
| Output | What it controls | Reviewer question |
|---|---|---|
| Document register | Issued information | Is this the current pack? |
| Quantity takeoff | Measured scope | Can the quantity be traced? |
| Bid build-up | Rates and vendor inputs | Is the source approved? |
| Scope schedule | Inclusions and boundaries | What is open or qualified? |
| Review log | Human checking | Who approved the change? |
Which standards belong in the estimate?
Standards affect what must be designed, supplied, installed and tested, but the estimator should cite the edition and project requirement actually named in the tender. CSI identifies Division 26 as Electrical. NFPA publishes NFPA 70 as the National Electrical Code. Neither replaces the project drawings, specifications or authority requirements.
Sources: Construction Specifications Institute: MasterFormat 2026, National Fire Protection Association: NFPA 70, National Electrical Code
What remains with the bidder?
The bidder approves rates, productivity inputs, design assumptions, qualifications and the final submission. Engineering sign-off is performed only by the registered engineer responsible for the job.
- No invented market rates
- No supplier commitment without approval
- No engineering certification by the estimating service
- No guarantee of award
Common questions
What else should the bid team know?
Is a takeoff the same as an estimate?
No. A takeoff measures quantities. An estimate adds rates, vendor prices, labor inputs, allowances, scope and review.
Can estimating begin before all drawings are issued?
Yes, if the incomplete information and estimating assumptions are explicit and reviewed when new documents arrive.
Who signs off the estimate?
The customer's authorized estimator or commercial reviewer approves the bid. Engineering decisions stay with the responsible engineer.
Primary sources
- MasterFormat 2026Construction Specifications Institute
- NFPA 70, National Electrical CodeNational Fire Protection Association
- TIA-942 Telecommunications Infrastructure Standard for Data CentersTelecommunications Industry Association
- Tier Standard: TopologyUptime Institute