Estimating

What is a bid package in construction?

A bid package is the set of documents sent to bidders so they can price a project or a portion of it: drawings, specifications, scope description, bid form, schedule, contract terms, and addenda.

Two construction professionals review paper plans beside a tablet at a jobsite workbench.
Plan reviews connect field conditions, drawings, and the next decisions on a job. AI-generated illustration.

A bid package is everything a bidder needs to put a price on the work. At the owner level it is the full set of drawings, specifications, instructions to bidders, bid form, and proposed contract that goes out to general contractors. At the GC level, the term usually means a trade package: the slice of the project sent to electrical, roofing, or drywall subs, with a scope of work that says exactly what that trade covers.

What goes in a bid package

  • Drawings and specifications for the scope, or the full set with the relevant sections called out.
  • Scope of work narrative listing inclusions, exclusions, and coordination items between trades.
  • Bid form with base bid, alternates, unit prices, and addendum acknowledgment.
  • Schedule showing when the trade is on site and key milestones.
  • Contract terms: the draft subcontract or prime contract, retainage, payment terms, and flow-down requirements.
  • Insurance and bonding requirements, including additional insured endorsements.
  • Site information: geotechnical reports, existing conditions surveys, logistics plans.
  • Public work extras: wage determinations, certified payroll requirements, and small business participation goals when they apply.

How GCs split a project into packages

Say a GC is pricing a $6 million, three-story office building. It might issue 25 to 30 trade packages. The tricky part is the line between packages. Who installs the blocking for wall-mounted TVs, the framer or the low-voltage sub? Who caulks the windows to the cladding? Who pours the housekeeping pads for rooftop units, the concrete sub or the mechanical sub?

Scope split examples between packages
ItemPackage that carries itWhy it gets missed
Housekeeping padsConcreteMechanical drawings show them, concrete drawings may not
In-wall blockingFramingLocations come from owner furniture and AV plans
Window perimeter sealantGlazingCladding and glazing both assume the other
Fire caulking at penetrationsEach penetrating trade, or one firestopping subNobody owns it unless assigned

A good trade package lists those items by name. A weak one just says "per plans and specs", and the gaps show up as change orders or back charges six months later.

Common bid package mistakes

  1. Sending the whole drawing set to every trade with no scope narrative.
  2. Leaving out the subcontract form, so terms get negotiated after the price is set.
  3. Not reissuing the package when an addendum arrives.
  4. Missing division of responsibility for shared items, which creates a scope gap.
  5. Giving subs too little time. A rushed package draws fewer bidders and higher prices.

Related terms

Bid packages lead to bid leveling, bid day, and buyout. They are announced through an invitation to bid. Use the subcontractor scope of work template and see how to write a scope of work for subcontractors.

Frequently asked questions

What is the difference between a bid package and a bid set?

People use both for the documents sent to bidders. Bid set often means the drawings and specs; bid package includes those plus the bid form, terms, and scope narrative.

How many bid packages does a project have?

It depends on size and how the GC splits trades. A small TI might have 10 to 15; larger buildings often have many more.

Should subs get the full drawing set?

Usually yes, so they can see coordination, but the package should point to the sheets and spec sections that define their scope.

Who prepares bid packages?

The owner's design team prepares the prime bid documents. The general contractor's estimators or preconstruction team prepare trade packages.

Written and edited by

Maurice Francois writes and edits construction operations guides for Smart Business Automator. More from Maurice on the Scaling Legends podcast.

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