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Davis-Bacon on a 221(d)(4): the four-story rule

The single design decision with the largest labor-cost consequence on a 221(d)(4) is whether the building has a fifth story.

Reviewed September 2026

Davis-Bacon prevailing wages apply to 221(d)(4) new construction and substantial rehabilitation. That much is well known. What is less well understood is which wage determination applies, and what triggers the expensive one.

The threshold is eight families, not twelve

The statutory hook is Section 212 of the National Housing Act, 12 U.S.C. § 1715c. It applies the labor standards to insurance of any mortgage under Section 221(d)(3) or (d)(4) covering property with a dwelling or dwellings “designed principally for residential use for more than eight families.”

A widely repeated figure is wrong. You will frequently see “12 units” given as the Davis-Bacon threshold for 221(d)(4). The 12-family threshold in Section 212 attaches to different programs — Sections 1715k and 1715x — not to Section 221. For a 221(d)(4), the number is eight. Since HUD sets 221(d)(4) eligibility at five units and up, there is a narrow theoretical band of five-to-eight-unit projects; in practice those are vanishingly rare, and we would not advise assuming an exemption without confirming it directly with HUD.

The implementing regulation is 24 CFR § 200.33, which requires compliance with 29 CFR parts 1, 3 and 5, requires the provisions to be inserted into project commitments, contracts, construction contracts and subcontracts, and bars insurance of advances absent the contractor’s certificate that laborers and mechanics have been paid the required rates.

Residential or building — the four-story test

This is the part that moves money. HUD Handbook 1344.1 REV-3 draws the line by height:

Building rates are typically materially higher than residential rates for the same trades in the same county. On a large project the difference is not a rounding item.

How stories are counted

The counting rules are specific, and they are where the design conversation actually happens:

The authority is Department of Labor All Agency Memoranda 130, 131 and 236. Note what is not in the test: the handbook chapter setting it out does not treat elevators or ground-floor commercial space as independent determinants. Height controls.

The practical implication is that a five-story wood-frame or podium design and a four-story design of the same unit count can carry meaningfully different labor budgets. That is worth pricing before the architect is far along, not after.

Exemptions

Section 200.33 excepts projects insured under Sections 207 or 232 pursuant to Section 223(f) — the acquisition and refinance route. Section 241 supplemental loans follow the labor standards of the original mortgage’s section. Part 70 provides a volunteer waiver where statutorily permitted.

There is no exemption for a 221(d)(4) new construction or substantial rehabilitation deal. If you are reading about a HUD loan without Davis-Bacon, you are reading about a 223(f).

What compliance looks like during construction

This is ongoing administrative work, not a one-time filing, and it needs to be staffed.

What to do about it

Get the wage determination early and price the trades against it, rather than against the local open-shop market. Settle the story count before the design is fixed. And make sure your general contractor has run federal prevailing wage jobs before — the administrative burden of certified payrolls across every subcontractor is where inexperienced GCs generate delays, withheld draws and, occasionally, restitution findings.

Sources

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