AF Form 1178 PDF: FY Project Cost Estimate Summary

AF Form 1178 PDF: FY Project Cost Estimate Summary – U.S. Air Force project managers, civil engineers, and facility planners rely on AF Form 1178 (also known as the FY Project Cost Estimate Summary) as a critical tool for Military Construction (MILCON) and facility project budgeting. This official form provides a standardized summary of projected costs for Air Force construction projects in a given fiscal year. Whether you’re preparing documentation for a new facility, renovation, or infrastructure upgrade at a U.S. base, understanding AF Form 1178 ensures accurate estimates that support successful funding requests via DD Form 1391.

In this complete guide, we break down what AF Form 1178 is, its purpose, key fields, how to use it, and where to download the latest official version. All information is drawn from trusted U.S. Air Force sources, including the official e-Publishing site.

What Is AF Form 1178?

AF Form 1178, officially titled FY Project Cost Estimate Summary (AF IMT 1178, dated 20000501, V1), is a one-page Air Force form used to summarize parametric and detailed cost estimates for MILCON and other facility projects.

It serves as the high-level cost summary that feeds into larger programming documents. The form is part of a family that includes:

  • AF Form 1178A – Project Cost Estimate Worksheet – Building Description
  • AF Form 1178B – Detail Cost Estimate Worksheet

These forms are generated early in the project definition phase (often during Project Definition Charrettes or PDC processes) using tools like the Parametric Cost Engineering System (PACES) and Unified Facilities Criteria (UFC) pricing guides.

Purpose of the FY Project Cost Estimate Summary

The primary goal of AF Form 1178 is to provide a clear, standardized snapshot of total project costs for fiscal year planning and budgeting. It helps:

  • Support accurate DD Form 1391 submissions for congressional funding
  • Enable Major Command (MAJCOM) and Headquarters review
  • Identify primary facilities, supporting infrastructure, contingencies, and overhead
  • Prevent cost overruns by capturing all elements early

Accurate use of AF Form 1178 is essential for U.S. Air Force bases across the continental United States (CONUS), Alaska, Hawaii, and overseas locations to secure MILCON funding without reprogramming delays.

Key Sections and Fields on AF Form 1178

The form is structured for quick reference and includes the following main blocks (based on the official PDF):

Header / Project Identification

    1. PDC Number
    1. Project Title
    1. Date
    1. MAJCOM
    1. Base/State/Inst Code
    1. ACF (Appropriation Code or similar)
    1. Construction Start
    1. Months of Construction

Cost Breakdown Sections

  • Primary Facilities (with columns for FY, CAT CODE, SAF, GCF, U/M, Scope, Unit Cost, and Cost in $000)
  • Supporting Facility Subtotal
  • Primary + Support Subtotal
  • Contingency (percentage)
  • Total Contract Cost
  • SIOH (Supervision, Inspection, and Overhead – typically 5.7% CONUS, higher in remote areas)
  • Total Request
  • Equipment from Other Appropriations (if applicable)

The form emphasizes costs in thousands of dollars ($000) and requires clear categorization of primary (building) vs. supporting (site work, utilities, etc.) elements.

How to Fill Out AF Form 1178: Step-by-Step Overview?

While the form itself does not include lengthy printed instructions (it relies on Air Force project management best practices), follow this standard process used by USAF civil engineer squadrons:

  1. Gather Project Data — Complete the Project Definition Charrette (PDC) and obtain scope, site plans, and facility requirements.
  2. Develop Parametric Estimates — Use PACES or approved UFC cost data to populate primary and supporting facility costs.
  3. Calculate Subtotals — Add primary + supporting facilities, then apply contingency (typically 5–10% depending on project maturity).
  4. Add SIOH — Apply the appropriate Supervision, Inspection, and Overhead rate.
  5. Review and Certify — Ensure the form aligns with AF Form 1178A/B worksheets and supports the overall DD Form 1391.
  6. Submit — Route through MAJCOM channels for approval.

For detailed guidance, refer to the United States Air Force Project Managers’ Guide for Design and Construction (available on WBDG.org) and local civil engineer squadron procedures.

Pro Tip for U.S. Air Force Users: Always use the most current cost indices and location factors. Early involvement of cost engineers helps avoid later adjustments.

  • AF Form 1178A – Provides detailed building description and scope data that feeds into the summary.
  • AF Form 1178B – Breaks down detailed cost elements (labor, materials, equipment).
  • DD Form 1391 – The primary MILCON project justification document that incorporates the AF Form 1178 totals.

All forms are available through the Air Force e-Publishing portal.

Download AF Form 1178 PDF (Official & Free)

Direct official download link (hosted by the U.S. Air Force e-Publishing Directorate):
Download AF Form 1178 – FY Project Cost Estimate Summary PDF

This is the current, authoritative version. Always download directly from e-publishing.af.mil to ensure you have the latest form (no recent supersession noted as of 2026).

Related downloads:

  • AF Form 1178A (Building Description)
  • AF Form 1178B (Detail Cost Estimate)

Best Practices for Accurate Air Force Cost Estimating

  • Use approved parametric tools (PACES is the Air Force standard)
  • Apply current UFC 3-701-07 DoD Facilities Pricing Guide
  • Document all assumptions clearly for audit and review
  • Factor in location-specific costs (e.g., higher in Alaska/Hawaii)
  • Coordinate early with MAJCOM and SAF/FM for complex projects

Proper use of AF Form 1178 helps U.S. Air Force projects stay on budget and on schedule—critical for national defense infrastructure.

Frequently Asked Questions (FAQ)

Is AF Form 1178 still current?
Yes. The form remains the official U.S. Air Force standard for project cost estimate summaries and is actively hosted on e-publishing.af.mil.

Who uses AF Form 1178?
Air Force civil engineers, project managers, architects, cost estimators, and contractors supporting MILCON at U.S. bases worldwide.

Can civilians or contractors use it?
Yes, when supporting Air Force projects under contract. The form is unclassified and widely referenced in design and construction guidance.

Where can I find training on AF Form 1178?
Check your local Civil Engineer Squadron, the Air Force Project Managers’ Guide, or MAJCOM-specific training.

Need help with related MILCON forms?
Search e-publishing.af.mil for the full library of AF Forms.

Ready to start your next Air Force project estimate? Download the official AF Form 1178 PDF today and ensure your FY cost summary is accurate and compliant.

For the most authoritative information, always reference official U.S. Air Force publications at e-publishing.af.mil. This guide is for informational purposes and reflects current publicly available guidance as of 2026.