ORIGINAL RESOURCE
MEP Estimating Bid Preparation Checklist
Use this checklist to review drawing revisions, trade boundaries, quantities, and assumptions for commercial, healthcare, industrial, and data center bids. This checklist covers every phase of MEP bid preparation. Each item has been validated against real bid-day errors.
Preconstruction & Estimating Architecture
This preparation checklist ensures complete MEP drawing and scope audit before pricing begins. For normalizing multi-trade subcontractor bids on bid day, review our complete MEP Bid Leveling Guide. If you are a prime contractor managing trade scope splits, explore our dedicated General Contractor Estimating Support.
Phase 1: Pre-Bid Drawing Audit (18 checks)
- All sheet numbers present and match the drawing index
- All plan sheets at correct scale (verify with known dimension)
- All referenced sections and details exist in the set
- All schedules populated (door, finish, mechanical, panel, plumbing)
- Spec sections present for all divisions in the scope of work
- Spec-to-plan conflict scan completed for all MEP divisions
- Drawing issue date within allowable bid window
- Addenda reviewed and incorporated into current drawing set
- RFI responses reviewed for scope-impacting decisions
- Prevailing wage determination confirmed for public projects
- Bid bond requirements verified (amount, form, surety)
- Bid form reviewed for unit price vs. lump sum requirements
- Alternate pricing requirements confirmed and listed
- Allowance items identified and listed separately
- Material substitution options identified per spec Section 016000
- Measurement units confirmed (imperial vs. metric across all sheets)
- Benchmark elevation verified across civil, architectural, and structural sheets
- Project manual reviewed for bidding procedures and requirements
Phase 2: Scope Verification (14 checks)
- Trade boundaries clearly defined between all MEP divisions
- Scope inclusions vs. exclusions documented for each division
- Mechanical: duct vs. piping scope split verified (per spec)
- Electrical: power vs. low voltage scope split verified
- Plumbing: domestic vs. industrial vs. medical gas scope split
- Fire protection scope included or excluded as separate bid package
- HVAC controls scope - DDC included in mechanical or separate
- Testing, adjusting, and balancing (TAB) scope confirmed
- Commissioning scope and documentation requirements scoped
- Owner-furnished contractor-installed (OFCI) equipment listed
- Contractor-furnished contractor-installed (CFCI) equipment confirmed
- Temporary utilities during construction scoped or excluded
- Final cleaning and filter replacement on completion scoped
- Warranty and post-occupancy support requirements reviewed
Phase 3: Trade Coordination Review (12 checks)
- Riser shaft allocation confirmed between all MEP disciplines
- Ceiling plenum depth adequate for all MEP systems
- Mechanical room sizes adequate for specified equipment
- Electrical room sizes adequate for switchgear and panelboards
- Roof area adequate for RTUs, exhaust fans, cooling towers
- Structural openings coordinated for duct and pipe penetrations
- Seismic bracing requirements identified by system and location
- Smoke control system requirements reviewed with architectural
- Firestopping scope reviewed at all MEP penetrations
- Sleeve and curb requirements identified for roof and floor penetrations
- Equipment access and maintenance clearance verified per code
- Crane/hoist access for rooftop equipment verified (rigging study needed)
Phase 4: Material Pricing Verification (15 checks)
- Current material pricing obtained within 30 days of bid date
- Supplier quotes received for major equipment (3+ quotes per item)
- Commodity price volatility assessed for copper, steel, aluminum
- Escalation clause reviewed (long-lead items priced at delivery date, not bid date)
- Sales tax applied correctly by jurisdiction
- Freight and delivery costs included for major equipment
- Equipment start-up/commissioning costs included in vendor pricing
- Extended warranties priced if required by spec
- Material substitution pricing prepared for VE alternatives
- Lead times verified and compared against construction schedule
- Obsolete/end-of-life equipment identified and substitution verified
- Manufacturer close-out discounts confirmed (end of quarter/line)
- Cash discount terms verified (2%/10 net 30 vs. net 30)
- Material pricing escalation allowance applied for projects over 12-month duration
- Owner-mandated supplier preferences reviewed
Phase 5: Labor Rate Cross-Check (8 checks)
- Prevailing wage determination confirmed for public projects
- Union vs. open-shop wage rate confirmed per project location
- Fringe benefit costs (pension, health, apprenticeship) included in burdened rate
- Workers' compensation insurance rate confirmed by trade classification
- Overtime/ shift differential calculated for accelerated schedules
- Travel and per diem costs included for remote project locations
- Productivity factors adjusted for project complexity and schedule
- Labor escalation applied for multi-year projects
Phase 6: Markup & Fee Analysis (10 checks)
- Material markup percentage confirmed (typically 5-15% depending on trade)
- Labor burden markup confirmed (typically 15-30% depending on trade)
- Subcontractor markup reviewed (if self-performing vs. subcontracted scopes)
- General conditions allocation reviewed (project duration - monthly GC cost)
- Bonds and insurance premiums calculated (bid bond, performance bond, payment bond)
- Overhead allocation confirmed (office overhead typically 5-10%)
- Profit margin confirmed (typically 5-15% depending on risk and project type)
- Contingency amount reviewed (typically 2-5% for hard bid, 5-10% for design-build)
- Bid-day escalation factor applied for last-minute material price changes
- Net fee target reviewed against market conditions and competitive position
Phase 7: Bid-Day Final Review (12 checks)
- All alternates priced and included in bid form correctly
- Unit prices transferred accurately to bid form
- Bid total arithmetic verified (add, subtract, multiply checks)
- Bid form signed and notarized (if required)
- Bid bond executed and attached
- Bid security amount verified (typically 5-10% of bid total)
- Bid submitted before deadline (allow 30-minute buffer for electronic submission issues)
- Scope exclusions clearly listed in bid letter
- Assumptions and clarifications documented in bid letter
- Material substitution requests attached with bid
- Bid tabulation completed for comparison with previous similar projects
- Management review and sign-off obtained
Source: Every item on this checklist represents an error we've caught during QA review of real project estimates. The items most frequently missed are Phase 1 items 6 (spec-to-plan conflict), Phase 4 item 6 (sales tax by jurisdiction), and Phase 6 item 7 (contingency amount). Use this checklist as a starting point and customize for your firm's specific bid process.
Prepared by the MEP Estimation USA Preconstruction & QA Group. Calibrated against real bid-day drawing addenda, CSI scope gaps, and commercial trade hand-off boundaries.
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