USDA – Construction

Work completed shall be performed in a workmanlike manner and in accordance with good usage and accepted practices. All materials shall be made and installed so they perform in accordance with their intended purposes.


Underground piping and related items shall be protected from corrosion. Underground mechanical and electrical systems shall be protectively coated to minimize corrosion where soil conditions warrant. Where applicable, sacrificial anodes may be used. Sacrificial anodes may be used where soil resistivity does not exceed 15,000 ohm – centimeters. Otherwise, an impressed current system of corrosion prevention shall be used.


Surfaces and base courses for roads, streets, parking areas, and walks shall be durable materials. Their construction shall be in conformance with generally accepted local design practices. Adequate surface and underground drainage systems shall serve all paving and improvements so as to ensure continuing stable soil support for these improvements..


A chemical barrier must be provided for structures build in areas where termites are determined by the HUD Field Office to be a hazard. A physical barrier will also satisfy this requirement. Soil treatment and pressure treated lumber are chemical barriers.


Gutters shall be provided is the soil is of such a nature that excessive erosion or expansion will occur, or roof overhangs are less than twelve inches in width for one story structure or less than 24 inches in width for two story structures. When gutters are omitted, a diverter or other suitable means shall be provided to prevent water from roofs or valleys from draining uncovered entrance platforms or steps. A gutter having the same cross section as the downspouts shall be used for spacing of up to 40 feet between downspouts. For each additional 20 feet of gutter, the gutter width shall be increase by one inch.

Strainers shall be installed at the head of the downspouts when the downspout is connected to an underground drain.

Scuppers shall be installed at the outfall end of a valley for special roofs designs, such as butterfly roofs. Scuppers shall be installed for overflow of all roofs enclosed by parapet walls, except when the construction of the roof and the type of roof covering used are designed to hold water.  Suitable overflow devices shall be used.

Downspouts shall be sized on the basis of 100 square feet of roof surface to one square inch of leader.


All exterior doors and weatherstripping shall be properly fitted so as to eliminate excessive infiltration of air.


Windows shall be installed in accordance with the recommendations of the manufacturer.

Windows and weatherstripping shall be properly fitted to eliminate excessive infiltration of dust, snow, or rain.

Screens shall be installed on openable windows in habitable rooms and bathrooms.


Application of paints, stains, and other coating systems shall¬† be in strict accordance with manufacturer’s directions. Additional coats may be required if the finish surface does not provide coverage or hiding that is acceptable to the HUD Field Office.


Carpeting and cushioning shall be installed in accordance with the Specifiers Guide for Contract Carpet Installation, published by the Carpet and Rug Institute. The carpet shall be installed over one of the following underlayments: A finish floor as provided and described in Section 509 and 609; a troweled concrete floor; a plywood subfloor (the top ply of plywood shall be at least “C plugged” grade); a plywood, hardboard or particleboard underlayment over any other subfloor described in this paragraph; other materials where they provide smooth, hard, durable surface.


The top material shall be securely bonded to a reinforced steel core, to 5/8 inch plywood, or to any other equivalent material; top material shall be phenolic laminate, vinyl plastic covering, ceramic tile, stainless steel or other material suitable for its intended use. At least three inches back and end splash shall be provided against all abutting vertical surfaces which are not water and grease resistant. When a back splash is omitted, the joints at the juncture of the counter top and vertical surfaces shall be tight and sealed; all edges, including the sink and any built-in surface units, shall have a non-corrodible metal molding or other suitable edging.


Each living unit shall be provided with a continuing and sufficient supply of safe water under adequate pressure and of appropriate quality for all household uses, and that will not impair the functioning or durability of the plumbing system or attachments.


Each living unit shall be provided with a water-carried system adequate to dispose of domestic wastes in a manner which will not create a nuisance or endanger the health of the occupants or the public.