Contractors

Subcontractor Bid Comparison Analyzer

Systematically compare multiple subcontractor bids to identify scope gaps, pricing outliers, and qualification differences. This prompt helps general contractors conduct thorough bid leveling analysis — ensuring they select subcontractors based on complete, comparable scope rather than lowest price alone.

This prompt analyzes multiple described subcontractor bids for a single trade scope and produces a side-by-side comparison table (base bids, alternates, exclusions, apparent totals), a scope gap identification showing which items some bidders included and others excluded, a price outlier analysis explaining likely causes when one bid is significantly below the others, a non-price qualification assessment by bidder, and a leveled bid comparison that adds back common exclusions for an apples-to-apples evaluation. The output includes a preliminary recommendation and risk assessment by bidder — final selection requires additional due diligence, documented bid interviews with the low bidder, and the owner's input where required by contract. It is for general contractors conducting subcontractor bid leveling during pre-construction on commercial and institutional projects.

Testedclaude-sonnet-4-6ValidatedMar 2026ScopeVerify against current contract documents and local regulati…TierProfessional
AI Role
You are an experienced general contractor with expertise in bid analysis, subcon…
Models
Claude
Confidence
Professional
Constraints
Verify against current contract documents and local regulations. This does not replace professional engineering judgment.
Bid comparisons are an analytical tool — final subcontractor selection must consider factors beyond bid price including safety record, quality history, and financial stability.
Do not share bidder pricing or scope information between competing bidders — this can create legal liability and bidding misconduct issues.
Tested Models
claude-sonnet-4-6
Uncertainty
If bid details are incomplete or not provided, generate a best-practice bid leveling framework for this trade type and note the specific information that must be collected from each bidder to complete the analysis.
Last updated
2026-05-28Published

The prompt

1,677 characters
bid-comparison-analyzer.prompt
You are an experienced general contractor with expertise in bid analysis, subcontractor qualification, and pre-construction cost management.

Analyze the following subcontractor bids:

Project information:
- Project name: [PROJECT_NAME]
- Trade: [TRADE]
- Bid scope: [SCOPE_DESCRIPTION]
- Number of bids received: [NUMBER_OF_BIDS]

Bid information:
[DESCRIBE EACH BID — bidder name (or #1/#2/#3), base bid amount, alternates, exclusions listed, qualifications, and any notable differences]

Analyze the bids covering:

## Bid Summary Table
Side-by-side comparison: base bid, alternates, apparent total, key exclusions, and total adjusted (adding back items some bidders excluded).

## Scope Gap Identification
Items that some bidders included and others excluded — creating an apples-to-oranges comparison that must be leveled before selecting.

## Price Outlier Analysis
If one bid is significantly lower than others, what might explain the difference — missed scope, different material assumptions, lower labor rates?

## Qualification Assessment
Non-price factors: relevant project experience, current workload, crew availability, reference quality, insurance and bonding capacity.

## Leveled Bid Comparison
Adjusted bid totals after adding back common exclusions to all bids — the true apples-to-apples comparison.

## Risk Assessment by Bidder
For each bidder, the primary risk factors: is the low bidder's price realistic? Are there gaps in their scope or qualifications that create downstream risk?

## Recommendation
A preliminary recommendation with the rationale — note that final selection requires additional due diligence and award must consider the full picture.
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How to use this prompt

1

1. Require all bidders to use the same bid form — standardized bid forms make leveling significantly easier and prevent missing scope from being attributed to price difference.

2

2. Conduct bid interviews with the low bidder before award to confirm they understand the scope — documented bid interviews protect the GC if the sub claims scope was misunderstood.

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3. Document the leveling analysis in the project file — if a change order is later disputed, the bid comparison shows what was and was not included in the scope at award.

Customization tips

Add 'Evaluate bonding capacity — for high-value subcontracts, confirm that the bidder's bonding line is sufficient for this contract without compromising their other projects.'
For specialty trades with limited qualified bidders, add 'Include a workforce availability assessment — a specialty subcontractor who is overcommitted on other projects may not be able to staff your project properly.'
Append 'Review the low bidder's safety record (EMR rating) — safety record is a qualifying criterion for many owners and should be part of every subcontractor evaluation.'

Sample output

Mar 2026Professional
Bid Comparison Analysis — Electrical Subcontract Project: [Project Name] Bid Date: [Date] Scope of Work: Complete electrical rough-in and finish, temporary power, fire alarm, and low-voltage rough-in for [Building Description] Bidders: 4 qualified electrical contractors BID SUMMARY TABLE: Bidder | Base Bid | Bid Bond | Unit Prices Provided | Qualifications [Bidder A] | $487,300 | Yes | Yes | [City] — 12 years commercial [Bidder B] | $512,800 | Yes | Yes | [City] — 8 years, 4 current projects [Bidder C] | $441,200 | Yes | Partial | [City] — 18 years, regional leader [Bidder D] | $523,100 | Yes | Yes | [City] — 6 years, primarily residential APPARENT LOW BIDDER: [Bidder C] at $441,200 ANALYSIS — BIDDER C (APPARENT LOW): Bidder C is $46,100 (9.5%) below the next lowest bid. Before recommending award, the following must be clarified: 1. Scope confirmation: Bidder C provided only partial unit prices. The bid letter references exclusions for "fire alarm panel programming" and "low-voltage cable terminations." These items are included in the other bids. If fire alarm programming and low-voltage terminations are added to Bidder C's scope at unit prices consistent with market rates, their adjusted total is approximately $471,400 — still the low bid but the gap narrows to $16,000. 2. Reference check: Contact two of the three listed references before recommendation. 3. Bonding capacity: Verify Bidder C's bonding company and capacity to bond this project. Surety confirmation requested. RECOMMENDATION: Subject to scope clarification, confirmed reference checks, and bonding confirmation: recommend award to [Bidder C] at a final negotiated price inclusive of complete scope. Pending items must be resolved before contract execution. Target award decision: [Date — 5 business days]. RUNNER-UP: [Bidder A] — competitive pricing, complete scope, strong local references. Recommend as backup if Bidder C cannot resolve scope questions.

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Professional Disclaimer

This AI-generated content is for informational and educational purposes only. It does not replace the professional judgment of licensed engineers or construction professionals. Always verify against current contract documents, local building codes, and safety regulations.