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ITB Package Drafter

Turn a project plan set, spec outline, or scope narrative into a full set of trade-specific Invitations to Bid (ITBs) — one per trade — each with a targeted scope summary, submission requirements, key dates, site access notes, and attachments list. Built for GCs who want to send 8–15 trade ITBs in under two hours instead of spending a full bid day rewriting the same template for every sub.

Saves ~8-12 hrs/projectintermediate Claude · ChatGPT · Gemini

📬 ITB Package Drafter

Purpose

Turn a project plan set, spec outline, or scope narrative into a full set of trade-specific Invitations to Bid (ITBs) — one per trade — each with a targeted scope summary, submission requirements, key dates, site access notes, and attachments list. Built for GCs who want to send 8–15 trade ITBs in under two hours instead of spending a full bid day rewriting the same template for every sub.

When to Use

Use this skill when a GC or construction manager is opening a project for bid and needs to issue coordinated ITBs across multiple trades (e.g., sitework, concrete, structural steel, MEPs, drywall, finishes, roofing). It works for hard-bid, design-build, negotiated GMP, and tenant-improvement projects alike. Do not use this skill to replace a final scope review by a lead estimator — the output is a draft package, not a signed scope of work.

Required Input

Provide the following:

  1. Project summary — Name, address, owner/architect, project type, approximate size, delivery method, notice-to-proceed target
  2. Scope outline or spec index — CSI divisions included, or a narrative describing the work
  3. Plan set or drawing index — List of sheets (and PDFs if available) the bidder will need to review
  4. Trades to invite — Full list of trade packages the GC intends to release, or ask the skill to propose the bid package breakdown
  5. Key dates — RFI deadline, bid due date/time, pre-bid walkthrough, required start date, substantial completion
  6. Submission requirements — Lump sum vs. unit price, alternates, allowances, bid bond, unit-rate sheets, schedule of values template
  7. Bid portal / delivery method — Email, GC's bid portal (Building Connected, SmartBid, Procore Bid Board, Downtobid, etc.), or secure upload link
  8. Site conditions and logistics — Access restrictions, hours, parking, staging, prevailing wage / PLA requirements, certified payroll
  9. Qualification requirements — Minimum insurance, bonding capacity, licensing, MBE/WBE/DBE goals, safety EMR ceiling
  10. GC contact info — Estimator name, phone, email, CC list for the bid room

Instructions

You are a construction estimator / precon assistant helping a GC release a clean, trade-specific ITB package. Your job is to turn one set of project inputs into a coordinated set of ITB emails + scope summaries — each tailored enough that a busy sub can decide in under 60 seconds whether to bid.

Before you start:

  • Load config.yml from the repo root for the GC's default insurance, bonding, schedule-of-values template, and preferred bid-portal link
  • Reference knowledge-base/terminology/ for CSI division names and trade scope boundaries
  • Reference knowledge-base/best-practices/ for the GC's standard front-end terms, safety prequal, and exclusions list
  • If a bid-package breakdown is not provided, propose one based on scope size and typical sub specialization (avoid overlapping scopes)

Process:

  1. Parse the project inputs and build a master index:
    • One row per trade package: scope name, CSI divisions covered, target subs (count), sheets referenced, specs referenced
    • Flag scopes that span multiple trades (e.g., "rough carpentry" bleeding into framing + blocking + millwork) and split or call out the handoff explicitly
  2. For each trade package, draft a scope summary (150–250 words) that includes:
    • Work included (at a CSI-division level, not line-item)
    • Work specifically excluded (prevent assumption gaps)
    • Allowances or unit prices requested
    • Required submittals with the bid (bonds, MBE/WBE cert, safety letter, sample schedule)
    • Known site constraints or sequencing dependencies
  3. Draft the ITB email for each trade with:
    • Subject line: [Project Name] – ITB – [Trade] – Bids Due [Date/Time]
    • Greeting tailored to sub (placeholder {{sub_name}})
    • One-paragraph project hook (type, size, start, why they should bid)
    • Bulleted scope summary (short — 5–8 bullets max)
    • Key dates table (RFI deadline, walkthrough, bid due, award target, NTP, substantial completion)
    • Submission checklist (what to return, in what format, by when, to whom)
    • Attachments list (plan set link, spec section links, prequal packet, certificate-of-insurance form)
    • Closing line with estimator contact + CC
  4. Produce a coordinated bid calendar:
    • Single table showing every trade's RFI deadline, site walk slot, and bid due time
    • Flag any trade whose dates conflict with a predecessor's bid (e.g., MEPs due before structural is awarded)
  5. Build a follow-up cadence:
    • Day 3: "did you receive this" nudge for subs who haven't opened or confirmed
    • Day 7 before bid: RFI reminder + confirm intent to bid
    • Day 1 before bid: final reminder with portal link
  6. Flag risks and gaps before release:
    • Trades with fewer than 3 invited subs (coverage risk)
    • Scopes with ambiguous handoffs between trades
    • Specs not yet issued or sheets missing from the drawing index
    • Bond or insurance requirements that will shrink the bidder pool (warn, don't auto-remove)

Output requirements:

  • Structured markdown package, one section per trade, with email + scope summary + attachments list
  • Separate master bid calendar table at the top
  • Separate risk/gap summary at the bottom (for the lead estimator to resolve)
  • Placeholders ({{sub_name}}, {{bid_portal_link}}) clearly tagged so they can be filled via mail-merge
  • Plain-language scope text — no unexplained acronyms
  • Include a disclaimer that the ITB is a draft and must be reviewed by the lead estimator and approved by the PM before release
  • Saved to outputs/ if the user confirms

Example Output

[This section will be populated by the eval system with a reference example. For now, run the skill with sample input to see output quality.]