Used Manufactured Home Minimum Habitability Requirements

By Douglas Diaz,2014-05-06 15:46
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Used Manufactured Home Minimum Habitability Requirements



    Manufactured housing must be installed by a licensed installer in accordance with the South

    Carolina Manufactured Housing Board guidelines. For more information or to check a license please call

    (803) 896-4682 or go to Deck Additions (with joists or headers longer than 6’) and Gas installations require separate building

    permits and must also comply with the SC Residential Builders Commission. An owner of both the

    property and mobile home intended for principle occupancy may build a deck addition as an owner

    builder. Structural changes, renovations, or additions cannot be made to a HUD mobile home without

    professional engineering and special permission from the building official.

    Before purchasing a used manufactured home, please read the handout “Used Manufactured

    Home Minimum Habitability Requirements to ensure that your mobile home meets minimum state standards. . All manufactured homes must have a minimum 3 ft. by 3 ft. landing at each egress door.

    Manufactured homes must be underpinned by masonry, vinyl, or approved metal. Before occupancy is

    allowed and power approved, a manufactured home must be completely set up, blocked and tied down,

    underpinned, all electrical, HVAC, plumbing and sewer connections complete and landings provided in

    accordance with the Installers handout “Mobile Home Setup Guidelines”.

    Installers, when you need to schedule an inspection, you should call two business days before

    work will be ready for inspection. Work should be accessible to the inspector. If work is not

    accessible, a re-inspection fee will be charged. All work should be ready for inspection by 8:30 AM on the day the inspection is scheduled. Because of the volume of inspection requests, we are not able to schedule a specific appointment time. Fees are specified by Ordinance 99-12. Mobile Homes

    are $80 for setup and $20 for decals Placement of manufactured housing is governed by the

    Department of Housing and Urban Development (HUD), National Electric Code, South Carolina

    Manufactured Housing Board and the International Residential Code. Modular Manufactured homes

    require a building permit and a licensed builder.

    The following information is needed for permitting: 1. ________ Application completed in full and signed by the licensed SC contractor

    2. ________ Floodplain Check Form verification and E-911 address assignment

3. ________ Septic tank installation approval from DHEC or approval from Sewer Commission

4. ________ Moving Permit from Assessors office unless coming from a dealer or not relocating

    5. ________ Copy of the Bill of Sale and Form 500 or Title

     a. If purchased in Oconee County, we will require a copy of the moving permit including the

     previous decal number the mobile home was registered under and Title or Legal Bill of Sale.

     b. If purchased in another County in South Carolina, a moving permit from the other County and

     Title or Legal Bill of Sale will be required.

     c. If mobile home is purchased from out-of-state, the city and state from previous location is

     needed and Title or Legal Bill of Sale will be required.

     (Serial # must be correct and will be verified through the DMV)

6. ________ Site plan if adjacent to lake or streams within 1000’ of lakes or if structure is within 5’ of property


7. ________ Roadway Permit (if applicable) (must have copy of Tax Map from the Map Room)

8. ________ Subdivision approval (if applicable) from Planning for more than one home

    Used Manufactured Home Minimum Habitability Requirements 9. ________ Zoning approval from Planning (City of Westminster if applicable)

    In accordance with Title 40 of the South Carolina Code of Laws, International Residential (IRC), Plumbing, and Fuel Gas Codes, National Electrical Code, and Ordinance 99-8 of Oconee County. HUD labelled manufactured homes are constructed as single-family detached residences only. They are not designed for use as, nor will they meet any building code requirements for, offices, stores/shops, classrooms, places of assembly, etc. If a manufactured

    home is renovated, structurally changed or added too, converted to any use other than a single-family residence, all warranties, approvals and labels issued by the federal government, the manufacturer and the associated design and inspection agencies are rendered null and void. At that point, the builder assumes complete responsibility for assuring compliance with all provisions of all applicable codes for the new use and occupancy classifications, and must certify the building as being equal to a site built structure in its construction. Since the unit may have to be stripped down to its frame before it could be inspected or renovated, the procedure would be time consuming and costly to its owner. In addition, before purchasing a used

    mobile home, please take into consideration the following minimum habitability requirements:

     (1) Sanitary facilities. Every Manufactured home shall contain not less than a kitchen sink, lavatory, tub or shower, and a water closet all in good working condition and properly connected to an approved water and sewer system. Every plumbing fixture and water and waste pipe shall be properly installed and maintained in good sanitary working condition free from defects, leaks, and obstructions.

    (2) Hot and cold water supply. Every manufactured home shall have connected to the kitchen sink, lavatory, and tub or shower an adequate supply of both cold water and hot water. All water shall be supplied through an approved distribution system connected to a portable water supply.

    (3) Water heating facilities. Every manufactured home shall have water heating facilities which are properly installed and maintained in a safe and good working condition and are capable of heating water to such a temperature as to permit an adequate amount of water to be drawn at every required kitchen sink, lavatory basin, bathtub or shower at a temperature of not less than 120 degrees Fahrenheit.

    (4) Heating facilities. Every manufactured home shall have heating facilities which are properly installed and maintained in safe and good working condition, and are capable of safely and adequately heating all habitable rooms, and bathrooms. Where a central heating system is not provided, each manufactured home shall be provided with facilities whereby heating appliances may be connected. Unvented fuel burning heaters shall be prohibited except for gas heaters listed for unvented use and the total input rating of the unvented heaters is less than 30 BTU per hour per cubic foot of room content. Unvented fuel burning heaters shall be prohibited in bedrooms.

    (5) Cooking and heating equipment. All cooking and heating equipment and facilities shall be installed in accordance with Federal Manufactured Home Construction and Safety Standards and shall be maintained in a safe and good working condition. Portable cooking equipment employing flame is prohibited.

    (6) Smoke detector. Every manufactured home shall be provided with an approved listed smoke detector, installed in accordance with the manufacturer's recommendations and listing. When activated, the detector shall provide an audible alarm.

    (7) Windows. Every habitable room excluding bathrooms, kitchens and hallways, shall have at least one window or skylight facing directly to the outdoors.

    (8) Ventilation. Every habitable room shall have at least one window or skylight which can be easily opened, or such other device as will adequately ventilate the room.

    (9) Electric service. Every habitable room or space shall contain at least two separate and remote convenience outlets and bedrooms shall have, in addition, at least one wall switch controlled ceiling or wall type light fixture. In kitchens, three separate and remote convenience outlets shall be provided, and a wall or ceiling type light fixture controlled by a wall switch shall be required. Every hall, water closet compartment, bathroom, laundry room or furnace room shall contain at least one electric fixture. In bathrooms the electric light fixture shall be controlled by a wall switch. In addition to the electric light fixture in every bathroom and laundry room there shall be provided at lest one convenience outlet. Any new bathroom outlet shall have ground-fault circuit interrupter protection. Every such outlet shall be properly installed, shall be maintained in good and safe working condition, and shall be connected to the source of electric power in a safe manner.

    (10) Exterior Walls. Every exterior wall shall be free of holes, breaks, loose or rotting boards or timbers and any other conditions which might admit rain or dampness to the interior portions of the walls or to the occupied spaces of the manufactured home.

    (11) Roofs. Roofs shall be structurally sound and maintained in a safe manner and have no defects which might admit rain or cause dampness in the walls or interior portion of the home.

    (12) Window sash. Window sash shall be properly fitted and weather tight within the window frame.

    (13) Interior floors, walls and ceiling. Every floor, interior wall and ceiling shall be substantially rodent proof, shall be kept in sound condition and good repair and shall be safe to use and capable of supporting the load which normal use may cause to be placed thereon. Every toilet, bathroom and kitchen floor surface shall be maintained so as to be substantially imperious to water.

    (14) Structural supports. Every structural element of the dwelling shall be maintained structurally sound and show no evidence of deterioration which would render it incapable of carrying normal loads.

    (15) Dangerous structures. Any manufactured home which shall be found to have any of the following defects shall be deemed unfit for human habitation

    (a) One which is so damaged, decayed, dilapidated, unsanitary, unsafe or vermin-

    infested that it creates hazard to the health or safety of the occupants or the public.

    (b) One which lacks illumination, ventilation or sanitation facilities adequate to protect the

    health or safety of the occupants or the public.

NOTICE: All Manufactured Homes Must Be Properly Licensed And Permitted Prior To

    Delivery. Failure to comply will result in additional permit fees, and/or the issuance of a summons for violation of Oconee County Code of Ordinance, 99-8.


    Method of Payment (Please circle one): CASH OR CHECK, #_______________New Decal # _______________________

    New _______ Pre-Owned _______ Trade-In _______ Decal Only _______


    ProjectAddress: _______________________________________________________________________________________

Tax Map #: _______-____-____-_______ Mobile Home Park & Lot #____________________________________

Mobile Home Owners Name: ___________________________________ Phone: (______) _________________________

Address ____________________________________________________________________________________________


SC License #: ______________________________________Expiration Date: ________________________________

Contractor Name: __________________________________ Phone: (_____) _________________________________

Company Name: ___________________________________ Cell: (_____) ____________________________________

Mailing Address: __________________________________ Email: _________________________________________


    (Please address all information that applies)

Manufacturer: ________________________________ Model: ________________________ Year ____________________

Serial Number: ________________________________ Size: _________________________ Color: ____________________

    Previous Decal Number (if applicable): _________________ Previous Owner (if applicable): _____________________________

    Date Purchased: ____________ Purchase Price: _____________ Sewer or Septic Tank Permit #:______________________

    Water Source: ______________ Heat Source: ________________ Number of: Bathrooms: ________ Bedrooms: _______

Power Company (Please circle one): Blue Ridge Duke Power Seneca L&W Other: _____________________

     YES or NO Does this project involve the use of any materials, design, or methods of construction not prescribed by HUD code?

     (If yes submit engineering plans for review)

    YES or NO Does this project have a deck with a span larger than six foot? (If yes additional carpentry permit needed.)

YES or NO Does this project have gas (LP or natural) utility connections? (If yes additional mechanical permit needed.)

    NOTICE: The applicant is responsible for compliance with any applicable codes including Oconee County Ordinance 98-10 and 99-8. If any of the information supplied by the owner and/or owner’s agent is incorrect, the permit may be revoked. THIS PERMIT WILL BECOME INVALID


    OR IF WORK HAS BEEN SUSPENDED FOR A PERIOD OF 180 DAYS. The building official is authorized to grant extensions of time, for

    periods not more than 180 days each. The extension shall be requested in writing and justifiable cause demonstrated. I hereby certify that I have authority of the owner to make this application, that the information is complete and correct, and that the construction and/or use will conform to the building code and other applicable laws and regulations which relate to the property.

_____________________________________________________________________ __________________

    Applicants Signature: Date:

    ______________________________________________________________________ __________________

    Please Print Name of Applicant Staff Initials

    Mobile Home Setup Guidelines Inspection: Please keep in mind the following Manufactured Housing Board Policies Adopted in 2005:

    “In addition to new manufactured homes being installed according to the manufactured homes

    instructions, the licensed installer, contractor, or dealer is responsible for all aspects of the installation

    including site preparation. Homeowners can not install their own homes even if they plan to reside in the

    home.” For further information or questions concerning the Program, you may contact the Board at (803)



    1) Have manufacturer’s instructions in a waterproof box on the front door with the permit.

    2) 911 House numbers must be installed.

    3) Mobile Home Decal installed where visible from the outside and facing the street. Piers and

    tie downs completed.

    4) All electrical work completed.

    5) Septic tank installed and water and sewer plumbing completed.

    6) DO NOT underpin until Building Inspector has inspected and approved piers and tie downs.

    You may underpin behind any decks and/or landings ONLY.


    1) The underpinning is completed.

    2) The decks are completed.

    3) All HVAC completed.



    It is the owner/contractors responsibility to contact the utility company after the inspection has

    been performed and approved.


    1. Call the Building Codes Department at 718-1005 and request an inspection.

    2. Give your permit number.

    3. If you have technical questions, please call between the hours of 4-5 P.M. and ask for an






Set-up and Installation:

The Federal Manufactured Home Construction and Safety Standard program and State Law

    requires that all manufactured homes be provided with installation instructions covering

    foundation, anchoring and utility connections. This is described in your Manufacturer’s

    Instruction Booklet. The manufacturer or homeowner shall be permitted to design for unusual

    installation not provided for in the manufacturer's standard installation instructions, provided a

    licensed SC professional engineer or architect approves the design in writing. Proprietary

    materials and alternate methods must be approved by the building official prior to installation.

If this information is not available and posted with the permit, we will use the following


     Placement of Manufactured Homes:

    (a) The grade away from the mobile foundation shall fall a minimum of 6 inches within the first 10 feet

    or equivalent swale. A minimum clearance of 12 inches shall be maintained beneath the main frame. No

    more than 25 percent of the underside of the main frame of the home shall be less than 12 inches above


    (b) Plates and Shims. A wood plate not exceeding two inches in thickness and shims that transfer loads

    uniformly not exceeding one inch in thickness shall be permitted to be used to fill any gap between the

    top of the pier and the main frame. Two, two inches or four inches solid concrete blocks shall be

    permitted to be used to fill the remainder of any gap. Shims shall be at least nominal four inches wide

    and six inches long and shall be fitted and driven tight between the wood plate or pier and main frame.

    (c) Elevated Manufactured Homes. When the manufactured home is installed on a basement or split

    entry type foundation over a habitable lower-level area, or when more than one-fourth of the area of a

    manufactured home is installed so that the bottom of the main frame members are more than three feet

    above ground level, the foundation system shall be designed by a registered professional engineer or

    architect and the installation shall be approved by the building official.

    Footings: Footings shall be sized to support the loads shown in the manufacturer's instructions and as

    specified below. The footings shall be adequate in size to withstand the uniform live and dead loads of

    the manufactured home and any concentrated loads.

    1. The supports shall begin not more than two feet from the exterior of each end wall. Supports shall

    be installed directly under the main frame (chassis) of the manufactured home. 2. Footings shall be at least 144 square inches of solid concrete, block, or other materials approved for

    the intended use by the South Carolina Manufactured Housing Board.

    3. Footings or pier foundations shall be placed level on firm undisturbed soil or on controlled fill which

    is free of grass and organic materials to minimum load-bearing capacity of 1000 pounds per square


    Piers: Piers or load-bearing supports or devices shall be designed and constructed to evenly distribute

    the loads. Load-bearing supports or devices shall be listed and labeled, shall be designed by a registered

    professional engineer or architect, shall be approved for the use intended, or piers shall be constructed

    as follows:

    a) Piers less than 36 inches in height shall be constructed of open or closed cell, eight inches by 16

    inches, concrete blocks (with open cells vertically placed upon the footing). Single-stacked block

    piers shall be installed with the 16 inches perpendicular to the main (I-beam) frame. The piers shall

    be covered with a two inches by eight inches by 16 inches wood or concrete cap. b) Piers between 36 inches and 80 inches in height and all corner piers over three blocks high shall be

    double blocked with blocks interlocked and capped with a four inches by 16 inches by 16 inches solid

    concrete block, or equivalent.

    c) Piers over 80 inches in height shall be constructed as above and they shall be laid in concrete mortar

    and steel reinforcing bars inserted in block cells with the block cells filled with concrete as designed

    by a registered professional engineer or architect.

    Walls: Load bearing and nonload-bearing walls constructed on site shall be constructed of

    concrete, masonry, or any other material or system that is recognized by Building Codes. Minimum

thickness shall be that required to resist lateral pressure from adjacent earth and support design loads

    as determined by acceptable engineering practice.


    ? Capacity of Anchors. Each approved ground anchor, when installed, shall be capable of resisting an

    allowable working load at least equal to 3,150 pounds in the direction of the tie plus a 50 percent

    overload (4,725 pounds) without failure.

    ? Anchoring Equipment. Anchoring equipment shall be capable of resisting an allowable working load

    equal to or exceeding 3,150 pounds and shall be capable of withstanding a 50 percent overload

    (4,725 pounds) without failure of either the anchoring equipment or the attachment point on the

    manufactured home. When the stabilizing system is designed by a qualified registered professional

    engineer or architect, alternative working loads may be used provided the anchoring equipment is

    capable of withstanding a 50 percent overload. All anchoring equipment shall be listed or labeled as

    being capable of meeting all the requirements of this section.

    ? Anchor Installation Specifications. Each type anchor suitable for this purpose shall have specification

    data showing the soil classification(s) for which it qualifies.

    ? Anchors designed for connection of multiple ties shall be capable of resisting the combined working

    load and overload consistent with the intent expressed herein, and shall be installed to resist

    resultant forces.

    ? Selection of Anchors. Anchor selection shall be based on a determination of the soil class at the

    depth the anchor helical plate will be installed.

    ? Other Anchoring Devices. Other anchoring devices meeting the requirements of this section shall be

    permitted if acceptable to the building official (ALTERNATE METHOD).

    ? Depth of Anchors. All anchors shall be installed to the full depth shown in the anchor manufacturer's

    installation instructions

    Ties or Straps:

    ? Tie materials shall be capable of resisting an allowable working load of 3,150 pounds with no more

    than two percent elongation and shall withstand a 50 percent overload (4,725 pounds total). ? Ties shall connect the ground anchor and the main structural steel frame (I-beam or other shape)

    which runs lengthwise under the manufactured home. Ties shall not connect to steel outrigger

    beams which fasten to and intersect the main structural frame unless specifically stated in the

    manufacturer's installation instructions.

    ? Connection of the cable frame tie to the manufactured home I-beam or equivalent main structural

    frame member shall be by a five-eighths inch drop-forged closed-eye bolt through a hole drilled in

    the center of the I-beam web or other approved methods. The web shall be reinforced if necessary

    to maintain the designed I-beam strength.

    ? Cable ends shall be secured with at least three U bolt-type cable clamps with the U portion of the

    clamp installed on the short (dead) end of the cable to assure strength equal to that required. ? Special Ties. Clerestory roofs and add-on sections of expandable manufactured homes shall have

    provisions for vertical ties at the exposed ends.

    ? Tensioning Device Design. Tensioning devices such as turnbuckles or yoke-type fasteners shall be

    ended with a clevis or forged or welded eyes.

    ? Permanency of Connections. Anchoring equipment shall be designed to prevent self-disconnection

    when ties are slack. Open hook ends shall not be used in any part of the anchoring system. ? Resistance to Weather Deterioration. All anchoring equipment exposed to weathering shall have a

    resistance to weather deterioration at least equivalent to that provided by a coating of zinc on steel

    of not less than 0.30 ounces per square foot on each side of the surface coated, as determined by

    ASTM Standard Methods of Test for Weight of Coating on Zinc-Coated (Galvanized) Iron or Steel

    Articles (ASTM A90-B1).

? Location of Ties. When continuous straps are provided as vertical ties, such ties shall be positioned at

    rafters and studs. Where a vertical tie and diagonal tie are located at the same place, both ties shall

    be permitted to be connected to a single ground anchor, provided that either the anchor used is

    capable of carrying both loadings, or that the load capacity of the total number of anchors used is

    equal to 3150 pounds working load plus 50 percent overload (4725 pounds.) times the number of

    ties specified in table below.

    ? Spacing of Vertical Ties. Vertical ties shall be as evenly spaced as practicable over rafters or over

    studs along the length of the manufactured home with not more than eight feet open-end spacing on

    each end.

    ? Number of Ties. The minimum number of ties per side for various lengths of manufactured homes

    shall be in accordance with table below.

     Length of # of # of Diagonal Minimum #

    Home Vertical Ties per Side of Anchors

    (feet) Ties

    Up to 40 2 4 8

    40-46 2 4 8

    46-49 2 5 10

    49-54 3 5 10

    54-58 3 5 10

    58-64 3 6 12

    64-70 3 6 12

    70-73 3 7 14

    73-84 4 7 14

a. Double section manufactured homes require only the diagonal ties specified.

    b. Length of manufactured home (as used in the above table) refers to length excluding the draw bar or


    c. Double sections will be bolted together by manufactured requirements.

    d. Open hook ends shall not be used in any part of the anchoring system.

    e. Anchors need to be at ground level.

    Plumbing: All plumbing shall be done in a workmanlike manner and conform to the International

    Residential and Plumbing Code.

    1. No water service may pass over or through any septic tank or its drain field.

    2. The water distribution system shall be protected against backflow with backflow prevention devices.

    3. A separate service shut-off valve shall be installed on the water line at the supply side located near

    the mobile home.

    4. Where water pressure in the home exceeds 80 PSI, a pressure-reducing valve must be installed.

    5. Water line must be 18 inches below grade from meter to home.

    6. Any above ground water line must be insulated.

    7. A clean out for routing out a plugged septic line must be installed within 5 of the mobile home and


    8. Do not mix PVC and ABS. Support drain piping every 4’ and slope a min 1/8” per foot or greater.

Mechanical Equipment (Heating and Cooling): All mechanical work shall be done in a

    workmanlike manner and conform to the International Residential and Mechanical Code.

1. Mechanical equipment installed outside of and not attached to a manufactured home shall be

    mounted on a level concrete slab not less than three inches thick, a precast reinforced concrete slab,

    treated wood of equivalent strength, or be mounted in accordance with the equipment

    manufacturer's installation instructions.

    2. Mechanical equipment installed shall be listed and labeled for its use and installed in accordance with

    the manufacturer's installation instructions.

    3. Mechanical equipment shall not be installed in a manner that would obstruct any means of required

    egress. Mechanical equipment shall not be installed in window openings that are part of an existing

    system and shall not obstruct sidewalks or other means of egress from the manufactured home.

    4. Gas installations require a separate mechanical permit.


    1. Rodent-proof skirting shall consist of brick, concrete block, vinyl, or other approved skirting

    extending to the ground around the perimeter of the mobile home.

    2. Access opening(s) not less than 18 inches in any dimension and not less than three square feet in

    area shall be provided and located so that any water supply and sewer drain connections located

    under the manufactured home are accessible for inspection. Such access panel(s) or door(s) shall

    not be fastened in a manner requiring the use of a special tool to remove or open.

    3. One square foot of ventilation with screen louvers not more than ?” in any dimension is required for

    every 1500 square feet of floor area when an approved vapor barrier is in place.

    4. Moisture producing devices such as dryers shall be vented to the outside beyond the perimeter of

    the home.

    5. Ensure that any fallen insulation is replaced and rodent-proofed under the home.


    All wiring shall comply with Article 550 of the National Electric Code.

    Electricity is intrinsically dangerous and Building Codes highly recommends using a State licensed

    electrician for all work done. State law requires any electrician subcontracting to be licensed.


     Use (4) separate insulated conductors approved for ampacity of main service disconnect. See wire

    size below.



    200 2/0 #1 #6 4/0 2/0 #4

    175 1/0 #2 #6 3/0 1/0 #4

    150 #1 #3 #6 2/0 #1 #4

    100 #4 #8 #8 #2 #4 #6

    1) Meter can be mounted on the home only if HUD approved by manufacturer.

    2) Service equipment and meter must be within 30’ of the home.

    3) Any outside receptacles must be on G.F.C.I. protection with wet location covers.

    4) Ground Rod Installation: Install min two 8-foot ground rods a minimum of 6 feet apart. Top of

    the ground rods must be flush or below grade.

    5) Bonding at the main panel goes to the neutral bus bar; bonding at the sub-panel goes to the

    grounding bus bar. Remove the jumpers in the sub-panel so the neutral and grounding bus bars

    are isolated. Bond the panel enclosure.

911 Number Requirements: Minimum 3 inch in height. All numbers must contrast to the color of

    the building and be readable from the road. Buildings more than 50 feet from the road must also have

    numbers at the road such as on a mailbox or on a 4x4 treated post.

Deck/Landing Requirements:

Decks and Landings must comply with the International Residential Code. All exterior doors require at

    least a 3’x3’ landing. Decks larger than 6’ in any direction require a building permit. HUD label homes do not allow additional structural loading so all mobile homes must use freestanding decks.

    For more information please see the document “How to Build a Residential Deck”

Points of contact:

? Palmetto Utility Protection Service (PUPS) 1-888-721-7877 Please give PUPS 72 hours notice.

    ? Sewer information: Oconee County Sewer Commission 972-3900

    ? Septic Tank information: DHEC 638-4185

    ? Duke Power: 882-7276 ? Blue Ridge Electric Cooperative: 1-800-240-3400

    ? Seneca Light and Water 885-2723

    ? Fort Hill Natural Gas: 882-8126

    ? City of Westminster: 647-3216

    ? Town of Salem: 944-2819

    ? Pioneer Rural Water: 972-3082

    ? Carpenters license verification: SC Residential Builders Commission: (803) 896-4696

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