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Construction Bid Alternates: Strategy for Pricing Add and Deduct Alternates

December 23, 2025
10 min read
CBConstructionBids.ai Team
Construction Bid Alternates: Strategy for Pricing Add and Deduct Alternates

Bid alternates are common elements of construction solicitations that allow owners to evaluate optional additions or deletions to the base scope. Understanding how to strategically price alternates can differentiate you from competitors and increase your win rate.

This guide covers the fundamentals of bid alternates and advanced strategies for pricing them effectively.

Understanding Bid Alternates

Bid alternates represent optional scope items that owners may choose to include or exclude from the contract after bid evaluation.

Types of Bid Alternates

Add Alternates

  • Optional scope additions to the base bid
  • Owner may elect to add if budget allows
  • Examples: upgraded finishes, additional rooms, enhanced systems

Deduct Alternates

  • Optional scope reductions from the base bid
  • Owner may elect to remove if budget constrained
  • Examples: reduced finish levels, phased construction, value engineering items

Substitution Alternates

  • Alternative products or systems
  • Replace specified items with alternatives
  • May be additive or deductive

Why Owners Use Alternates

Owners include alternates to:

  • Manage budget uncertainty
  • Maintain flexibility in scope decisions
  • Evaluate value engineering options
  • Phase project scope as funding allows
  • Test market pricing for optional elements

Base Bid vs. Alternate Considerations

How you handle the relationship between base bid and alternates affects competitiveness.

Base Bid Priority

Most procurement rules prioritize the base bid:

  • Award typically based on base bid price
  • Alternates considered after identifying low bidder
  • Base bid must be complete and competitive
  • Never sacrifice base bid competitiveness for alternates

Strategic Implications

Consider the likely scenario:

When Owner Likely to Accept Alternates

  • Price alternates competitively
  • Alternates extend your competitive advantage
  • Volume helps if you're already low

When Owner Unlikely to Accept Alternates

  • Focus resources on base bid accuracy
  • Alternates less critical to outcome
  • Don't overinvest in alternate pricing

Pricing Add Alternates

Strategic considerations for add alternate pricing.

Full Cost Recovery

Calculate complete costs for add alternates:

Direct Costs

  • Labor for additional scope
  • Materials specific to alternate
  • Equipment requirements
  • Subcontractor work

Indirect Costs

  • Extended general conditions (if applicable)
  • Additional supervision
  • Insurance on added scope
  • Extended bonding costs

Markup

  • Overhead allocation
  • Profit margin
  • Risk contingency

Volume Discount Consideration

When add alternates create efficiencies:

  • Shared mobilization costs
  • Crew productivity improvements
  • Material volume discounts
  • Reduced unit costs at scale

These efficiencies can make your alternate pricing more competitive while maintaining margins.

Timing Considerations

Consider when alternates would be executed:

  • Work concurrent with base bid (efficient)
  • Work after base bid completion (remobilization costs)
  • Impact on overall schedule
  • Seasonal or weather factors

Pricing Deduct Alternates

Deduct alternates require careful strategic thinking.

True Cost Deduction

Calculate actual savings from scope reduction:

  • Removed labor costs
  • Eliminated material costs
  • Reduced equipment needs
  • Subcontractor scope reductions
  • Schedule impact savings

Overhead Recovery Challenge

Key strategic concern: overhead and profit recovery

If Deduction Equals Full Cost

  • You lose overhead and profit from base bid
  • Creates margin pressure on reduced project
  • May make project unprofitable

Strategic Approach

  • Deduct direct costs only
  • Maintain overhead and profit in base bid
  • Protect overall project margins

Minimum Project Size

Consider your overhead requirements:

  • Calculate minimum project size for profitability
  • Evaluate if deducted project meets threshold
  • Price deducts to maintain viability
  • Avoid winning unprofitable reduced projects

Advanced Alternate Strategies

Sophisticated approaches to alternate pricing.

Competitive Positioning

Use alternates strategically in competitive situations:

If Expecting to Be Low on Base

  • Price alternates competitively
  • Extend your advantage if alternates accepted
  • Volume adds to total opportunity

If Expecting to Be Close on Base

  • Aggressive alternate pricing may win contract
  • Lower alternate might swing decision your way
  • Consider strategic pricing on key alternates

Reading Owner Intent

Evaluate which alternates are likely to be accepted:

Signals of High Priority Alternates

  • Detailed specifications for alternate
  • Site work already planned for alternate
  • Owner questions focused on alternate
  • Budget discussions mention alternate

Signals of Unlikely Alternates

  • Minimal specification detail
  • Optional or nice-to-have language
  • Late addition to bid documents
  • No pre-bid questions about alternate

Subcontractor Coordination

Manage subcontractor alternate pricing:

  • Request sub pricing on all alternates
  • Coordinate scope inclusions/exclusions
  • Verify subs understand alternate descriptions
  • Get complete alternate coverage

Common Alternate Scenarios

Handle typical situations effectively.

Phased Construction Alternates

When alternates create project phases:

  • Calculate remobilization costs between phases
  • Consider general conditions for extended duration
  • Evaluate crew efficiency across phases
  • Price schedule impacts

Quality Level Alternates

When alternates change finish levels:

  • Calculate material cost differences accurately
  • Consider labor productivity differences
  • Include any warranty differences
  • Evaluate long-term maintenance implications

System Alternates

When alternates substitute building systems:

  • Get complete pricing from different trades
  • Evaluate coordination requirements
  • Consider long-term operating costs (if relevant)
  • Include design differences if applicable

Bid Form Completion

Properly complete alternate sections on bid forms.

Required Format

Follow bid form requirements:

  • Use specified format (lump sum, unit price)
  • Complete all alternate lines
  • Show add or deduct clearly
  • Sign and acknowledge all alternates

Mathematical Accuracy

Verify calculations:

  • Double-check all arithmetic
  • Ensure signs are correct (add vs. deduct)
  • Verify totals if required
  • Cross-check with estimating spreadsheets

Clarifications

Address any questions:

  • Note any scope clarifications
  • Document assumptions
  • Identify exclusions if applicable
  • Avoid qualifications that risk rejection

Evaluating Competitor Alternate Strategies

Learn from bid results.

Bid Analysis

After bid opening:

  • Record competitor alternate pricing
  • Calculate base bid plus alternates combinations
  • Identify pricing patterns
  • Note aggressive or conservative approaches

Competitive Intelligence

Build knowledge over time:

  • Track competitors' alternate strategies
  • Identify market pricing patterns
  • Understand owner evaluation approaches
  • Refine your strategy based on results

Frequently Asked Questions

Should I price deduct alternates as a full cost deduction?

Generally, no. Price deduct alternates to cover your direct cost savings while preserving overhead and profit in the base bid. Full cost deductions reduce your margins on the final project.

Can alternates change my position from low to high bidder?

Typically, no. Most procurements determine the low bidder based on base bid first, then evaluate alternates. However, check specific bid documents for evaluation criteria.

How should I handle an alternate I don't want?

Price it honestly but don't sacrifice margin. If the deduct makes the project unprofitable, price it conservatively. You cannot typically refuse work on accepted alternates.

What if I discover an error in alternate pricing after submission?

Rules vary by procurement. Generally, errors in alternates are handled similarly to base bid errors. Contact the contracting officer immediately if you discover a material error.

Should I ask pre-bid questions about alternates?

Yes. If alternate scope is unclear, submit questions through proper channels. Clear understanding enables accurate pricing and reduces risk.

Conclusion

Bid alternates provide opportunities for strategic differentiation beyond base bid pricing. By understanding owner intent, calculating true costs, and applying strategic pricing approaches, contractors can use alternates to improve win rates while protecting margins.

Focus first on a competitive base bid, then apply appropriate strategies to alternates based on likelihood of acceptance and competitive positioning needs.

Ready to find more bidding opportunities with alternates? Try ConstructionBids.ai free to discover projects matched to your capabilities and start winning more work today.

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