A metal-frame barndo is built differently from a stick-built house, and a few agency rules land differently because of it. The good news is that one of them works in your favor. The catch is that the paperwork has to be done right for the benefit to count.
For new construction, HUD's handbook requires the builder's termite protection guarantee form, HUD-NPMA-99-A, on every new home. But it also says: if the building is constructed with steel, masonry or concrete components with only minor interior wood trim and roof sheathing, no treatment is needed. The lender must make sure the builder notes on the form that the construction is masonry, steel or concrete.
Two practical points. A barndo with a steel frame but wood interior framing throughout may not fit "only minor interior wood trim," so be honest about the build. And if the home is treated, FHA rejects a post-construction soil treatment applied only around the perimeter of the foundation.
When FHA finances a home that has not been started yet, the lender must get either the building permit and Certificate of Occupancy, or three inspections: footing, framing and final. Those come from the local building authority or an ICC-certified inspector, or when no ICC-certified inspector is available, from a disinterested third party: a registered architect, structural engineer or qualified tradesperson who meets the state's licensing and bonding rules. For modular homes it is footing and final only.
Barndos are often built where there is little local code enforcement, which is exactly when that third-party inspector path matters. Plan who will inspect before the slab is poured, not after.
USDA requires new homes to be built to certified plans and meet or exceed the International Energy Conservation Code in effect when built. A metal building's insulation details get real attention here. A new home that cannot meet USDA's inspection and warranty requirements is limited to 90 percent of market value instead of full financing.
FHA's new construction rules also require a well water test from the local health authority or a qualified lab, and a septic report where the local authority requires one - common on barndo acreage. For how shop space is treated, see shop space rules; for the FHA build loan itself, FHA construction builder rules.
Sources: HUD Handbook 4000.1, Update 17 issued November 26, 2025, section II.A.8.i New Construction, parts iii Required Inspections and iv Required Documentation; 7 CFR 3555.202(a) and 3555.103(c), eCFR current as of September 24, 2026. Agency rules change and lenders may add their own requirements; confirm before relying on them. Not a commitment to lend.
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