Government contracting

Buy American and Build America rules for contractors

Federal agencies buying construction directly follow the Buy American statute in FAR Part 25. Grant-funded infrastructure built by states, cities, and utilities follows the Build America, Buy America Act. The tests, percentages, and waiver routes are different, so start by knowing which one your contract carries.

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.

There are two separate domestic content rules on public construction. The Buy American statute applies when a federal agency contracts directly for construction: you must use domestic construction materials, and a manufactured material counts as domestic only if it is made in the U.S. and its domestic components exceed 65 percent of component cost for items delivered from 2024 through 2028. The Build America, Buy America Act (BABA) applies to infrastructure paid for with federal grants and loans: iron, steel, manufactured products, and listed construction materials must be produced in the U.S., with a 55 percent component test for manufactured products. Check the contract clause to see which applies.

Buy American vs. BABA at a glance

How the two domestic preference rules compare
QuestionBuy American statute (FAR 25.2)Build America, Buy America (2 CFR 184)
Which jobsFederal contracts for construction, alteration, or repair of public buildings and works in the U.S.Infrastructure projects funded by federal financial assistance, flowed down to contracts and purchase orders
Manufactured itemsMade in U.S. and domestic components over 65 percent of cost (2024 to 2028), 75 percent starting 2029Made in U.S. and domestic components over 55 percent of cost
Iron and steelFor materials wholly or predominantly iron or steel, foreign iron and steel under 5 percent of component costAll manufacturing from initial melting through coating in the U.S.
Other construction materialsUnmanufactured materials mined or produced in the U.S.Specific standards for non-ferrous metals, plastics, glass, fiber optic cable, optical fiber, lumber, drywall, and engineered wood
Cement, stone, sand, gravelUnmanufactured materials must be mined or produced in the U.S.Not covered by the BABA categories
Exceptions or waiversNonavailability, unreasonable cost, public interest, commercial ITPublic interest, nonavailability, or cost increase over 25 percent of the overall project

How the Buy American statute works on federal construction

FAR 25.201 says to use only domestic construction materials on construction contracts performed in the U.S., except as allowed in 25.202. For a manufactured material, there is a two-part test: it must be manufactured in the U.S., and domestic components must exceed the threshold. The threshold depends on the delivery year, so a long job can cross into the 75 percent rule in 2029 unless the agency approves an alternate test.

Commercially available off-the-shelf (COTS) items are waived from the component test, though they still need to be manufactured in the U.S. Iron and steel items are measured differently: foreign iron and steel must be under 5 percent of component cost.

Getting an exception for foreign material

If you want to use a foreign material, ask with your offer and give the information the clause requires. When the request is based on unreasonable cost of domestic material, the contracting officer adds 20 percent of the foreign material's cost to your price for evaluation, or more for critical items. Any approved exception is listed in the contract. Larger contracts, at or above $6,683,000, may also fall under trade agreements, which change the rules.

How BABA works on grant-funded infrastructure

BABA applies when federal financial assistance pays for an infrastructure project: roads, bridges, transit, water and wastewater, broadband, energy, and public buildings, read broadly. The owner (a city, state, utility, or authority) gets the grant, and the requirement must be included in every subaward, contract, and purchase order for the work. That is how it reaches the general contractor and subs.

Each item falls into one category based on its status when it arrives at the job site: iron or steel product, manufactured product, construction material, or the excluded group of cement, cementitious materials, aggregates, and binding agents. Classify each item once and apply only that category's test.

Waivers come from the federal agency, not from your owner, and there is a public comment period of at least 15 days before a final waiver. Transportation programs often have their own older Buy America requirements, which BABA does not replace where they meet or exceed it, so read the specific grant terms.

Timing also matters. The OMB rule in 2 CFR Part 184 took effect October 23, 2023, for awards obligated on or after that date. Awards obligated from May 14, 2022, up to that date fall under earlier OMB guidance (Memorandum M-22-11). On an older grant, ask the owner which version its award carries.

How to comply in 6 steps

  1. Identify the rule. Look for the Buy American clause (FAR 52.225-9 or 52.225-11 on federal contracts) or BABA language in the grant-funded owner's specs.
  2. Build a material list. List every permanent material and manufactured item on the job and assign each to a category.
  3. Collect certifications at bid time. Ask suppliers for written origin statements and component cost breakdowns before you lock prices, not after delivery.
  4. Price the domestic option. Quote domestic and foreign versions where it matters so you know the cost of compliance.
  5. Flow it down. Put the same requirement in every subcontract and purchase order.
  6. Keep the file. Store certifications with submittals and the delivery records that show which year items were delivered.

Worked examples

Say an electrical contractor on a direct federal contract plans a light fixture assembled in Ohio. Delivery is in 2027. The manufacturer's component costs are $10,000 per lot, with $6,200 of domestic components. That is 62 percent, below the 65 percent threshold for 2027, so the fixture is not domestic. The contractor either finds a fixture that passes or requests an exception with the offer.

Now say a mechanical contractor on a city water plant upgrade, funded by a federal grant, buys a pump skid made in Texas. Component cost is $200,000, with $118,000 domestic. That is 59 percent, above the BABA 55 percent test, so the skid passes. The concrete and gravel for the pads fall in the excluded group, while any lumber incorporated into the plant must meet the BABA lumber standard.

Mistakes to avoid

  • Applying the BABA 55 percent test to a direct federal contract, or the FAR test to a grant-funded job.
  • Accepting a supplier's "made in USA" sticker without a component cost certification.
  • Asking for a foreign material exception after award instead of with the offer.
  • Forgetting that the delivery year sets the threshold under the Buy American statute.
  • Leaving the requirement out of purchase orders, so a supplier substitutes an import.

Templates, terms, and tools that help

Track origin documents with the submittal log template and the material delivery log template. For pricing impact, see how tariffs affect construction material costs and how to handle material price escalation in bids. The broader list of federal duties is in the federal construction contract compliance checklist.

Smart Business Automator can pull data out of supplier certifications and store them against each submittal and delivery, so the domestic content file builds itself as the job runs. See subcontractor compliance automation.

Frequently asked questions

Is Buy American the same as Build America, Buy America?

No. The Buy American statute applies to direct federal procurement under FAR Part 25. BABA applies to infrastructure funded by federal financial assistance under 2 CFR Part 184. They use different tests and waiver processes.

What percentage of domestic content is required under the Buy American statute?

For manufactured construction material other than iron or steel, domestic components must exceed 65 percent of component cost for items delivered in 2024 through 2028 and 75 percent starting in 2029, under FAR 25.201.

Does BABA apply to cement and gravel?

BABA's categories exclude cement and cementitious materials, aggregates such as stone, sand, and gravel, and aggregate binding agents or additives. Check the grant terms for any other program rules.

Who grants a BABA waiver?

The federal agency that made the award. Under 2 CFR 184.7, it can waive for public interest, nonavailability, or when domestic items would raise the overall project cost by more than 25 percent, after posting the proposed waiver for public comment.

Sources

  1. eCFR: FAR 25.201, Policy (Buy American, construction materials)
  2. eCFR: FAR 25.202, Exceptions
  3. eCFR: FAR 25.204, Evaluating offers of foreign construction material
  4. eCFR: FAR 25.003, Definitions (domestic construction material)
  5. eCFR: 2 CFR 184.3, Definitions (produced in the United States)
  6. eCFR: 2 CFR 184.4, Applying the Buy America Preference
  7. eCFR: 2 CFR 184.6, Construction material standards
  8. eCFR: 2 CFR 184.7, Buy America Preference waivers
  9. eCFR: 2 CFR 184.2, Applicability and effective date
Written and edited by

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

Get a free assessment