ORIGINAL RESOURCE
MEP Estimating Bid Preparation Checklist
Developed from QA reviews of 12,000+ estimates across commercial, healthcare, industrial, and data center projects. 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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