How to Find Scope Gaps in Subcontractor Bids Before Award

Short answer: A scope gap is work the project requires that no awarded subcontractor has carried. To find scope gaps before award, compare every bid against a line-item scope of work, not just against the other bids. Read each proposal’s inclusions, exclusions, alternates and qualifications, mark each scope line as included or not, plug what’s missing, and check the seams between trades.

Key takeaways

• Scope gaps hide in exclusions, qualifications and the interfaces between trades.
• The low bid is often low because of what it leaves out.
• Leveling against your own scope, line by line, is the most reliable way to catch gaps.

What is a scope gap in construction?

A scope gap is required work that falls between bids. It happens when a subcontractor excludes an item, qualifies it away, prices it as an alternate, or assumes another trade will do it. Gaps found after award usually turn into change orders, back-charges or fee erosion.

Where do scope gaps hide in subcontractor bids?

• Exclusions lists. “Excludes dewatering,” “excludes testing,” “excludes permits.”
• Qualifications. Assumptions about mobilizations, working hours, site access or material escalation.
• Alternates. Required work priced separately so the base bid looks lower.
• Trade interfaces. Patching, blocking, sleeves, cleanup and temporary protection.
• Silence. Items the bid doesn’t mention at all.
• Revisions. A revised number that quietly drops something the first bid carried.

How to find scope gaps: a step-by-step process

1. Start from a line-item scope. Use your scope of work and internal estimate as the baseline. See how to write a subcontractor scope of work.
2. Read every proposal, not just the total. Pull out inclusions, exclusions, alternates and qualifications.
3. Mark each scope line for each bidder. Included, not included, or needs review.
4. Plug the gaps. Add the estimated cost of missing scope, a plug, so leveled totals are comparable.
5. Check the seams. Confirm every interface item is carried by exactly one package.
6. Clarify with bidders. Ask subs to confirm or revise before you carry their number.
7. Re-check revisions. Compare the new version against the old one, not just the new total.

How software helps catch scope gaps

Doing this by hand across dozens of proposals is where gaps slip through on bid day. In Consight, Level Bids reads each subcontractor proposal and maps the bidder’s items to your scope sheet, flagging lines as included, not included or needing review. Items it can’t confidently match go to a Suggested Items tray instead of being guessed. Every finding links to the source text in the bid, so estimators can verify it. Learn more about bid leveling software for general contractors.

Frequently asked questions

What’s the difference between an exclusion and a scope gap?

An exclusion is a bidder saying it won’t do something. It becomes a scope gap if that work is required and nobody else is carrying it.

When should scope gaps be resolved?

Before award. After award, the cost of a gap usually shifts to the general contractor.

Related reading: scope gap detection software, how to compare subcontractor bids and how to level mechanical and electrical bids.