Manufactured Homes Checklist

Footing

• Select footer type
• ABS pads
• Poured concrete footers
• Solid poured footers
• Soil-bearing capacity data required. SNCRMH 2019 3.5.3
• Determine frame pier layout based on new home install manual OR SNCRMH Code 2019 for used homes, as applicable.
• Determine perimeter pier blocking based on new home install manual or SNCRMH Code 2019 for used homes, as applicable.

Set up

• Pier spacing is determined by soil bearing capacity data and footer size/type. Refer to new home install manual OR NC Regulations for Manufactured Homes code for used homes, as applicable. SNCRMH 2019 3.5.3
• Single stacked piers, double stacked piers. Refer to new home install manual OR NC Regulations for Manufactured Homes code for used homes, as applicable. SNCRMH 2019 3.7

Click on each image to enlarge it.

• Anchor strapping, anchors, and fasteners must be of an approved listed product and installed according to manufacturer installation instructions. SNCRMH 2019 3.9.2
• Required amount/locations of frame, sidewall, and longitudinal anchors per new home install manual OR NC Regulations for Manufactured Homes code for used homes, as applicable. SNCRMH 2019 3.9.1
• Home must include data plate, which determines wind zone locations and other site specific criteria. SNCRMH Appendix I
• The use of stabilizer plates may be required per new home install manual OR NC Regulations for Manufactured Homes code for used homes, as applicable. SNCRMH 2019 3.9.6.3
• Perimeter footing for masonry underpinning (if applicable), size per SNCRMH 2019 3.6; this footing requires an inspection prior to concrete being poured.

Marriage Wall

• Per new home install manual OR NC Regulations for Manufactured Homes code for used homes, as applicable.
• Marriage wall gasket must be installed at floor, end walls, and ceilings. SNCRMH 2019 3.8.2
• Note: Access required for inspection at the exterior end walls.
• Must be approved prior to trades.

Final Inspection

• Address numbers required per NC Residential Building Code 2018 R319.
• Underpinning (masonry, vinyl, or other approved material) installed. SNCRMH 3.6 and 3.10
• Egress stairs per NC Code. Note: if landing area is larger than 36 square feet, a Deck Permit must be obtained, and inspections for footings and framing are required. Refer to Appendix M in the NC Residential Code. SNCRMH 3.11

• Vapor barrier, access to crawlspace, and ventilation installed per code. SNCRMH 3.10
• Repair any rips, tears, or other alterations to belly board with approved materials per new home install manual OR NC Regulations for Manufactured Homes code for used homes, as applicable. SNCRMH 2019 3.8.10
• Seal any penetrations in underpinning.
• Proper drainage: soil grade outside the home shall be sloped at a minimum of 1/2 inch per foot for a minimum of 10 feet on each side of the home. SNCRMH 3.3.4

All trade finals must be approved in order to inspect and approve for a final certificate of compliance.

Rough In

• Note: If at the time the rough-in plumbing inspection is requested the water line trench and sewer line trench are also ready, all 3 can be inspected simultaneously. If water line and sewer line are not installed and ready at time of rough in plumbing inspection, a separate inspection request for a water line trench and a sewer line trench will be required.
• DWV test must be in place per State of NC Regulations for Manufactured Homes 2019. Standpipe on the waste piping, filled with water, to the floor level. SNCRMH 2019 3.13.3.7.1
• All plumbing installed according to the NC Residential Plumbing code. SNCRMH 2019 3.13.1.1
• Water line trench with piping, excavated and open for visual inspection, from either well pump OR county water meter to a minimum of 12 inches. SNCRMH 2019 3.13.3.4.6 and 3.13.3.5.2

Sewer Line Trench

• Sewer line trench with piping, excavated and open for visual inspection, to the connection of septic tank OR to county sewer source. 2018 NC Residential Plumbing P3001.2 (309.1)
• All plumbing must be installed according to the NC Residential Plumbing code.
• Tracer wire in place along sewer piping from cleanout between the building drain and building sewer. 2018 NC Plumbing Code 306.2.4. Tracer wire is not needed when the building drain goes to a privately owned septic tank system; unless the developed length of piping is over 25 feet, the tracer wire would then need to be installed (per Brunswick County policy).

Final

• Plumbing rough-in inspection must be approved.
• All trenches covered with code minimum amounts of cover.
• Proper shut off valves in place for water supply and distribution. SNCRMH 2019 3.13.6.1
• Clean out installed within the proper distances per the 2018 NC Plumbing code P3005.2 (708.1.5) and SNCRMH 2019 3.13.7.9
• Thermal expansion tank OR valve installed on water distribution piping (if water supply from county source). SNCRMH 2019 3.13.6.5
• All water supply piping exposed above ground insulated per plumbing code. 2018 NC Plumbing Code 305.4

Electrical Trench

(from well pump to panel, if required)

Any trench installation must comply with NEC Article 300 for burial depth. NEC 2017 300.5

Electrical Final

• Electrical service adequately supported per SNCRMH 2019 3.12.3 and NEC 2017 ARTICLE 550
• GEC to 2 ground rods with visible connections. SNCRMH 2019 3.12.3
• Interconnectivity bonding system installed. NEC 2017 250.94
• Grounding electrode system warning label applied to MDP per NEC 2017 Article 550 and SNCRMH 2019 3.12.3
• All electrical installations must comply with the applicable NEC code. New service and equipment installations must comply with NEC 2017.

Final

• All HVAC equipment is installed per manufacturer installation instructions.
• All dryer vent ducts are assembled properly according to the NC Residential Mechanical Code M1502.4 (504.8) and SNCRMH 2019 3.14.8
• Support and fasten all duct work and line set if installed under home per product listings and NC Residential Mechanical Code M1502.4 (504.8) and SNCRMH 2019 3.14.9
• Crossover duct installed per home manufacturer's installation manual and duct manufacturer.

Rough In

(if applicable, needed for finished attic spaces in multi-story; not typical)

• All ducts installed, supported, and connected to registers per the NC Residential Mechanical code.
• If additional unit is installed for a separate area in the home (as in not installed by the house manufacturer), the unit will be inspected (pan, supports, etc.).