What Did Similar Projects Bid For? How Past Bid Data Can Improve Your Next Estimate
When preparing a construction bid, one of the most useful questions to ask is:
What did similar projects bid for?
Looking at comparable projects can give contractors valuable context before they finalise an estimate. Previous bid results can help you understand how other contractors priced similar work, identify unusual pricing and check whether your current estimate is within a reasonable market range.
But past bids should not simply be copied into a new estimate.
Every construction project is different. Scope, quantities, location, labour, materials, site conditions, schedule and market conditions can all affect the final price.
The better approach is to use comparable historical bids as a benchmark, then combine that information with your current quantity takeoff, project requirements and current costs.
Why does historical bid data matter for construction estimating?
The question “What did similar projects bid for?” means looking at previous construction projects that are comparable to the project you are currently pricing and reviewing what contractors bid on those projects.
The comparison can include:
- Total bid amounts
- Bid item prices
- Unit prices
- Project quantities
- Project location
- Bid date
- Number of bidders
- Low and high bids
- Bid spreads
- Project scope
- Construction type
For example, if you are pricing a new commercial, civil or infrastructure project, historical bid information may help you find projects with similar characteristics and see how previous contractors approached the pricing.
The important question is not simply:
“What was the lowest bid?”
It is:
“What did comparable contractors bid, and why?”
Why Should Contractors Ask What Similar Projects Bid For?
A construction estimate is built from many individual assumptions.
You may have accurate quantities and current material prices, but you still need to understand how your estimate compares with the market.
Historical construction bid data can provide another reference point.
It can help you:
- Validate an estimate
- Compare similar projects
- Review historical bid prices
- Identify pricing patterns
- Understand bid competition
- Investigate unusual results
- Support bid/no-bid decisions
- Identify potential estimating issues
- Benchmark current pricing
- Make better-informed bidding decisions
Historical data is therefore most useful as a decision-support tool, not as a replacement for professional estimating.
How to Find Out What Similar Projects Bid For
1. Start With Your Current Project
Before searching for historical bids, understand exactly what you are pricing.
Review:
- Drawings
- Specifications
- Scope of work
- Quantities
- Addenda
- Project location
- Schedule requirements
- Construction methods
- Bid requirements
A clear understanding of the current project makes it easier to identify genuinely comparable projects.
2. Find Projects With Similar Scope
Project scope is one of the most important comparison factors.
A project with a similar contract value is not necessarily comparable.
For example, two projects might each have a $5 million contract value but involve completely different construction activities.
Instead, look for similarities in:
- Type of construction
- Work activities
- Materials
- Quantities
- Construction methods
- Project complexity
- Trade or CSI division
The more closely the historical project matches the current scope, the more useful the comparison can be.
3. Compare Project Location
Location can have a major influence on construction pricing.
A project in one market may have very different costs from an otherwise similar project elsewhere.
Consider:
- Local labour rates
- Material availability
- Transportation
- Subcontractor availability
- Supplier competition
- Site access
- Local market conditions
- Regional demand
This is why a comparable project in the same market can often provide more useful context than a project with similar scope in a completely different location.
4. Compare Project Quantities
Quantity is another important factor.
A contractor may price a large quantity differently from a small quantity because of purchasing, productivity, mobilisation, equipment and other project considerations.
When reviewing historical projects, compare:
- Total quantities
- Major bid items
- Unit quantities
- Project size
- Work duration
- Equipment requirements
Do not rely only on the total contract value.
What Should You Compare When Reviewing Past Bids?
A useful historical bid comparison should look at several factors.
| Factor | Why It Matters |
|---|---|
| Scope | Determines whether the projects are genuinely comparable |
| Location | Labour, material and market conditions vary |
| Quantity | Scale can affect unit pricing |
| Project size | Larger projects may have different cost structures |
| Bid date | Historical prices may need current-market adjustment |
| Site conditions | Difficult conditions can increase costs |
| Schedule | Accelerated work can affect pricing |
| Number of bidders | Provides context about competition |
| Bid range | Shows how widely contractors priced the project |
| Construction method | Different methods can produce different costs |
This approach provides much more useful information than simply looking for the lowest previous bid.
Should You Use the Lowest Previous Bid?
Not automatically.
The lowest historical bid may be useful, but it should not become your target price without further analysis.
A contractor may have submitted a particularly aggressive bid because of:
- Available crews
- Existing equipment
- Supplier relationships
- Workload at the time
- Strategic bidding
- Different project assumptions
- Different site conditions
- Different material costs
- Different quantities
Government estimating guidance also recognises the importance of considering project characteristics, location, quantities and other conditions when using historical bid information.
The better approach is to review multiple comparable results whenever reliable data is available.
What Is a Bid Tabulation?
A bid tabulation, often called a bid tab, records the bids submitted by contractors for a construction project.
Depending on the project, a bid tab may show:
- Contractor names
- Total bid amounts
- Bid items
- Unit prices
- Quantities
- Total item prices
- Apparent low bidder
- Other submitted bids
Bid tabs are valuable because they can show how multiple contractors priced the same project.
Instead of seeing only one winning number, you can examine the wider competitive range.
Why Multiple Bid Results Matter
Imagine a comparable project received these bids:
| Bidder | Bid |
|---|---|
| Contractor A | $4.82 million |
| Contractor B | $4.96 million |
| Contractor C | $5.08 million |
| Contractor D | $5.21 million |
| Contractor E | $5.47 million |
If you only look at the lowest bid, you see $4.82 million.
If you look at the entire bid range, you get a much better understanding of the competitive market for that project.
You can then ask:
- Why was Contractor A lower?
- Were the other bids relatively close?
- Was one bid unusually high?
- Were quantities consistent?
- Was the project particularly competitive?
- How does the current project differ?
This is the type of analysis that makes historical bid information useful.
Historical Bid Data Is a Benchmark, Not a Price
One of the biggest mistakes when using historical construction bids is treating an old bid as if it were today’s price.
A previous project may have been affected by different:
- Material prices
- Labour costs
- Equipment costs
- Fuel costs
- Supply conditions
- Interest rates
- Market demand
- Construction schedules
- Site conditions
Historical bid prices therefore need to be interpreted in the context of the current project.
The Federal Highway Administration’s estimating guidance similarly discusses the use of historical bid-based estimating alongside factors such as project characteristics, quantities and location.
How to Adjust Historical Bids for a Current Project
After identifying a comparable project, ask what has changed.
Labour
Are current labour costs different from the historical project?
Materials
Have material prices or availability changed?
Location
Is the current project in the same market?
Quantities
Are the quantities similar?
Scope
Does the current project include additional or different work?
Schedule
Does the current project require faster completion?
Site conditions
Are access, terrain or other site conditions different?
Market
Is contractor competition similar to the historical project?
These differences should be considered before using historical results as a benchmark.
How Historical Bid Data Can Help Validate Your Estimate
Suppose your current estimate is significantly higher than several comparable historical projects.
That does not necessarily mean your estimate is wrong.
It means you should investigate.
Possible explanations include:
- Higher current material costs
- Higher labour costs
- More difficult site conditions
- Different quantities
- Additional scope
- Different construction methods
- More demanding schedule
The opposite is also true.
If your estimate is significantly lower than comparable historical bids, investigate why.
You may have:
- Missed part of the scope
- Used outdated pricing
- Underestimated quantities
- Missed project-specific requirements
- Assumed unrealistic productivity
Historical bid data therefore works well as an estimate validation tool.
What Did Similar Projects Bid For? A Practical Example
Imagine you are preparing an estimate for a new project.
You identify three previous projects with similar scope and location.
| Project | Historical Bid | Current Comparison |
|---|---|---|
| Project A | $4.80M | Similar scope and size |
| Project B | $5.05M | Similar location |
| Project C | $5.20M | Similar quantities |
Your current estimate is $5.10 million.
The historical data does not tell you that $5.10 million is automatically the correct price.
Instead, it tells you that your estimate sits within the range of several comparable projects.
You can then investigate the differences between those projects and your current opportunity.
This is a much stronger approach than selecting one previous bid and using it as your target.
How Bid History Can Support a Bid/No-Bid Decision
Historical bid information can also be useful before a contractor invests substantial estimating resources into a project.
If comparable projects consistently fall outside your company’s target market, capabilities or pricing structure, that information may influence your decision to pursue the opportunity.
On the other hand, if historical projects indicate a market where your company is competitive, the information can support further estimating work.
Historical data should not make the bid/no-bid decision for you.
It should provide additional evidence for the decision.
Where Can You Find Historical Construction Bid Data?
Historical bid information can come from several sources, including:
- Government procurement portals
- State and local agency bid tabs
- Public project databases
- Construction data platforms
- Internal company records
- Estimating software
- Bid-data services
The challenge is not simply finding old projects.
The real challenge is finding relevant projects with useful information.
A large database of unrelated projects may be less useful than a smaller set of well-matched comparable projects.
How True Bid Data Can Help You Research Comparable Projects
True Bid Data provides construction project information and estimating-related services for contractors and construction professionals.
Its project-data approach can help contractors research opportunities and access information that supports the estimating process.
The company’s broader workflow can connect project research with:
Project information → Comparable projects → Historical bid results → Quantity takeoff → Current estimating → Bid review
That means historical information can become part of a broader preconstruction process rather than a standalone number.
Historical Bid Data vs Current Estimating Data
These two information sources serve different purposes.
| Information | Purpose |
|---|---|
| Historical bid data | Shows what contractors bid on previous projects |
| Bid tabs | Shows the competitive range of submitted bids |
| Quantity takeoff | Determines how much work the current project requires |
| Current material costs | Reflects today’s material market |
| Current labour costs | Reflects today’s labour market |
| Current estimate | Calculates the expected cost of the current project |
The strongest estimating process considers these sources together.
7 Questions to Ask Before Using a Historical Bid
Before using a previous project as a benchmark, ask:
- Was the scope genuinely similar?
- Was the project in a comparable location?
- Were the quantities similar?
- How old is the bid data?
- Were market conditions comparable?
- How many contractors submitted bids?
- Are there unusual factors that could explain the bid results?
If the answers are substantially different, the historical project may still provide context, but it should not be treated as a direct pricing benchmark.
The Bottom Line: What Did Similar Projects Bid For?
Asking “What did similar projects bid for?” can be a valuable part of construction estimating.
But the answer is only useful when you understand the projects behind the numbers.
Compare scope, location, quantities, project size, bid date, site conditions and competition. Review multiple bid results where possible. Then consider how current labour, material and market conditions differ from the historical project.
Most importantly, do not treat the lowest previous bid as your target price.
Use historical construction bid data to validate your thinking, identify differences and make a more informed estimate.
For contractors preparing their next opportunity, True Bid Data can provide construction project information, quantity takeoffs and estimating support to help turn project research into better-informed bidding decisions.
