FAR 52.236-16 Quantity Surveys: Estimator Checklist for Federal Bids
When bidding on federal construction projects that involve unit-priced line items, estimators and small contractors must pay close attention to how completed work gets measured and paid. Under the Federal Acquisition Regulation, federal agencies use specific contract clauses to define who measures the site, who computes the billable work, and what records must change hands before money is released.
The standard mechanism for this is FAR 52.236-16 Quantity Surveys. Prescribed under section 36.516, this clause applies to fixed-price construction contracts when unit pricing of items and payment based on quantity surveys are contemplated. Understanding your operational obligations under this clause is essential when preparing bids for federal work, especially when evaluating Lump Sum vs. Unit Price vs. Cost-Plus project structures.
Checklist Item 1: Identify Which Survey Scope Applies
Before submitting a proposal or finalizing crew pricing, verify whether the solicitation uses the basic clause or Alternate I of 52.236-16 Quantity Surveys. The assignment of surveying responsibilities changes dramatically between the two versions:
- The Basic Clause Setup: The Government conducts the original and final surveys and makes the computations based on those surveys. The contractor is responsible for conducting the surveys for any periods where progress payments are requested and making the computations based on those progress surveys.
- Alternate I Setup: When an official determination is made at a level above the Contracting Officer that having Government personnel handle the surveys is impracticable, Alternate I is substituted. Under Alternate I, the contractor conducts the original surveys, the final surveys, and all intermediate surveys for progress payment periods.
Checklist Item 2: Account for Survey Supervision Rules
Federal surveying is not strictly a self-directed task. Whether you are performing progress surveys under the basic clause or completing all original, progress, and final surveys under Alternate I, every survey conducted by the contractor must be conducted under the direction of a representative of the Contracting Officer.
The only exception provided in the text is if the Contracting Officer waives this oversight requirement in a specific instance. Estimators and project managers should plan schedules with this oversight requirement in mind, as coordinating field layout and measurement with Government representatives directly affects how quickly verification can occur.
Checklist Item 3: Clarify Who Computes the Quantities
Conducting the survey is only part of the process; turning raw survey data into payable figures requires formal computations. Review who performs the final math based on the contract terms:
- Under the Basic Clause: The Government calculates the official quantities from the original and final surveys. The contractor calculates the quantities for each progress payment cycle based on the contractor's interim surveys.
- Under Alternate I: Even though the contractor conducts the original and final surveys, the Government makes the computations necessary to determine the quantities of work performed or finally in place. However, the contractor still makes the computations for each period for which progress payments are requested.
In all situations, the data derived from these surveys is used to compute the quantities of work performed and the actual construction completed and in place.
Checklist Item 4: Plan for Field Notes and Record Turnovers
Federal payment approval depends directly on proper documentation. When managing billing under this clause, small general contractors and trade subcontractors must adhere to strict administrative requirements when compiling their monthly Progress Payment Requests:
- Prompt Turnover: Promptly upon completing a survey, the contractor must furnish the originals of all field notes to the Contracting Officer.
- Complete Layout Records: Along with field notes, the contractor must deliver all other records relating to the survey or to the layout of the work.
- Government Review: The Contracting Officer uses these records as necessary to determine the dollar amount of progress payments.
- Contractor Archiving: The contractor is explicitly required to retain copies of all materials furnished to the Contracting Officer.
Checklist Item 5: Price the Administrative and Crew Burden
Small general contractors and trade contractors must ensure their estimates cover the actual labor and coordination time necessary to conduct progress surveys, calculate figures, and reproduce documentation. Because field layout notes and records must be transferred promptly to avoid delays in payment determinations, budgeting for competent layout personnel and organized record retention is a mandatory cost of performance on federal unit-priced work.
Sources
FAR 52.236-16 Quantity Surveys | Acquisition.GOV
Published October 29, 2026. No affiliate links on this page. Facts come from the sources linked above; check them for updates.