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Low Bidder Responsibilities: What Happens After You Win the Bid

December 15, 2025
9 min read
CBConstructionBids.ai Team
Low Bidder Responsibilities: What Happens After You Win the Bid

Winning the bid is just the beginning. As low bidder, you face a series of responsibilities and timelines that lead to contract execution and project start. Understanding these obligations helps you transition smoothly from bidding to building.

Immediate Post-Bid Responsibilities

Bid Opening

At Public Bid Opening

  • Results announced publicly
  • Confirm your number heard correctly
  • Note other bidders' prices
  • Receive apparent low bidder notification (sometimes)

After Opening

  • Document results for your records
  • Begin preparing for award process
  • Don't celebrate prematurely
  • Start post-bid checklist

Bid Validity Period

Standard Periods

  • Public projects: 30-90 days typical
  • Private projects: varies by invitation
  • Extended holds sometimes requested

Your Obligations

  • Honor pricing during validity period
  • Don't withdraw without valid grounds
  • Maintain bond availability
  • Keep subcontractor commitments valid

Bid Review Process

Owner's Evaluation

What Owners Check

  • Bid completeness
  • Responsiveness to requirements
  • Arithmetic verification
  • Subcontractor listing compliance
  • Required form submissions

Common Issues Found

  • Missing signatures
  • Incomplete forms
  • Arithmetic errors
  • Listing violations
  • Qualification concerns

Responding to Bid Review

Clarification Requests

  • Respond promptly and completely
  • Document all communications
  • Get any agreements in writing
  • Involve legal if questions are complex

Error Discovery

  • Material errors may allow withdrawal
  • Clerical vs. judgment errors distinction
  • Documentation critical
  • Know your rights and obligations

Award and Execution Timeline

Notice of Intent to Award

What It Means

  • Owner intends to contract with you
  • Protest period typically follows
  • Not yet final award
  • Begin mobilization planning

Your Actions

  • Acknowledge receipt
  • Begin contract preparation
  • Alert bonding company
  • Confirm subcontractor commitments

Protest Period

Purpose

  • Allow unsuccessful bidders to challenge
  • Typically 5-10 business days
  • Must be resolved before final award
  • May delay contract execution

If Protest Filed

  • Cooperate with owner's process
  • Provide documentation as requested
  • Maintain bid validity
  • Consult legal if named in protest

Contract Execution

Owner Preparation

  • Final contract documents assembled
  • Insurance requirements confirmed
  • Bond requirements specified
  • Execution timeline provided

Contractor Requirements

  • Review contract carefully
  • Negotiate only if allowed
  • Execute by deadline
  • Provide required bonds/insurance

Bonding Requirements

Performance Bond

Purpose: Guarantees project completion

Requirements

  • Typically 100% of contract value
  • Surety company approved
  • Executed before contract
  • Must meet owner specifications

Your Actions

  • Alert surety immediately after opening
  • Provide contract for bond preparation
  • Submit bond with contract documents
  • Confirm surety acceptance

Payment Bond

Purpose: Guarantees payment to subs and suppliers

Requirements

  • Typically 100% of contract value
  • Protects subcontractors/suppliers
  • Required on most public projects
  • Some private projects require

Your Actions

  • Usually provided with performance bond
  • Same execution timeline
  • Surety processes together

Bond Execution Timeline

Typical Sequence

  1. Win bid → notify surety immediately
  2. Receive award → send contract to surety
  3. Surety reviews → issues bonds
  4. Submit bonds → with executed contract

Common Problems

  • Delayed surety notification
  • Contract terms surprise surety
  • Capacity issues discovered late
  • Paperwork delays

Insurance Requirements

Certificate Requirements

Common Coverages Required

  • General liability
  • Workers' compensation
  • Auto liability
  • Umbrella/excess
  • Professional liability (sometimes)

Certificate Issuance

  • Request from insurance agent
  • Verify limits meet requirements
  • Confirm additional insured endorsements
  • Submit with contract documents

Special Requirements

Additional Insureds

  • Owner
  • Architect/engineer
  • Construction manager
  • Lenders

Endorsements

  • Waiver of subrogation
  • Primary and non-contributory
  • Per project aggregate
  • Completed operations

Timeline

Best Practice

  • Review requirements before bidding
  • Confirm coverage availability
  • Alert agent when low bidder
  • Submit certificates with contract

Subcontractor Commitments

Confirming Subcontract Prices

Post-Award Actions

  • Contact all listed subcontractors
  • Confirm pricing still valid
  • Begin subcontract process
  • Address any issues immediately

Potential Problems

  • Sub price was conditional
  • Material prices changed
  • Sub overcommitted
  • Scope misunderstandings

Subcontract Execution

Timeline Pressure

  • Flow-down requirements
  • Bonding requirements for subs
  • Insurance certificate collection
  • Pre-construction needs

Best Practices

  • Standard subcontract form ready
  • Clear scope exhibits prepared
  • Insurance requirements specified
  • Payment terms defined

Pre-Construction Requirements

Submittals and Schedules

Common Requirements

  • Project schedule
  • Schedule of values
  • Submittal schedule
  • Safety plan

Typical Deadlines

  • Within 10-30 days of contract
  • Approval required before work
  • May affect first payment
  • Critical path to start

Pre-Construction Meeting

Purpose

  • Introduce project team
  • Review procedures
  • Clarify requirements
  • Establish communication

Preparation

  • Review contract requirements
  • Prepare questions
  • Bring key personnel
  • Document meeting outcomes

Notice to Proceed

What It Means

  • Official authorization to start
  • Contract time begins
  • Mobilization authorized
  • Project is active

Your Response

  • Acknowledge receipt
  • Confirm start date
  • Begin mobilization
  • Start schedule tracking

Setting Up for Success

Administrative Setup

Project Files

  • Contract and amendments
  • Insurance and bonds
  • Subcontracts
  • Correspondence

Systems

  • Cost tracking
  • Schedule management
  • Document control
  • Payment processing

Team Mobilization

Key Personnel

  • Project manager assignment
  • Superintendent identification
  • Administrative support
  • Safety personnel

Communication

  • Contact lists
  • Reporting procedures
  • Meeting schedules
  • Emergency protocols

Subcontractor Coordination

Kick-Off Activities

  • Sub coordination meeting
  • Schedule review
  • Submittal coordination
  • Safety orientation

Common Post-Bid Problems

Award Delays

Causes

  • Funding issues
  • Protests
  • Political changes
  • Document problems

Your Options

  • Extend bid validity if requested
  • Negotiate pricing adjustments
  • Consider withdrawal grounds
  • Maintain patience

Scope Clarification Disputes

Situation: Owner interprets scope differently than you bid

Response

  • Reference bid documents
  • Document your interpretation basis
  • Seek clarification meeting
  • Consider change order if truly extra

Subcontractor Issues

Situation: Listed sub can't perform

Response

  • Document the issue
  • Understand substitution rules
  • Propose qualified replacement
  • Follow required procedures

Pricing Errors Discovered

Situation: Significant error found after bid

Response

  • Evaluate materiality
  • Understand withdrawal rights
  • Document error evidence
  • Seek legal advice if significant

Conclusion

The post-bid period is critical for setting up project success. The transition from bidding to contract execution requires attention to deadlines, documentation, and relationship management.

Treat the post-bid period with the same discipline as bid preparation. Missing a bond deadline or insurance requirement can jeopardize the contract award you worked hard to win.

Build a post-bid checklist and use it consistently. Know your obligations, meet your deadlines, and communicate proactively with owners and subcontractors. The effort invested in clean contract execution pays off throughout project delivery.


ConstructionBids.ai tracks your bid submittals and award status, helping you manage the post-bid period for multiple opportunities simultaneously.

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