Current through Register Vol. 35, No. 6, March 26, 2024
The following requirements apply to new, used, pre-owned or
resold manufactured homes, unless otherwise indicated.
A. These standards are minimum state
requirements and they are applicable to new and used home installations, unless
expressly specified otherwise. The division may approve other permanent
foundations when the manufacturer's installation manual does not make a
provision for permanent foundations or is not available. Two sets of drawings
submitted by a New Mexico licensed engineer or a HUD approved D.A.P.I.A
engineer may be submitted to the division for review, and subsequent denial or
approval along with a certificate that the engineer has contacted the home's
manufacturer. No political subdivision of the state shall regulate the
installation or construction standards, of a manufactured home, including
foundation systems.
B. Perimeter
enclosement.
(1) All materials used for a
perimeter enclosement must be approved by the division.
(2) Materials shall be installed in
accordance with the manufacturer's recommended installation instructions or in
accordance with the minimum standards accepted by the division.
(3) The manufactured home's perimeter
enclosement must be self-ventilating, and no flammable objects may be stored
under the manufactured home.
(4) An
access or inspection panel shall be installed in the perimeter enclosement and
shall be located so that utilities and blocking may be inspected.
(5) All vents and openings shall be installed
to prevent entry of rodents and direct rainfall not to exceed ¼ inch
mesh.
(6) All perimeter
enclosements in excess of thirty inches (30") in height must be supported
vertically at least every four (4') feet or installed according to the
enclosement manufacturer's specifications.
C. New home installations. The manufacturer's
installation manual shall be followed for all new homes installed within the
state of New Mexico. The person(s) performing the work to install a new home
shall be responsible to insure that all necessary installation permits have
been obtained by the homeowner, customer or installer, to be determined in
writing prior to the delivery of subject home. Compliance with permanent
foundation criteria, site work 14.12.5.9 NMAC, planning, and zoning, slope and
drainage requirements is the sole and separate responsibility of the persons,
companies or contractors performing such work.
D. Installation of used, pre-owned or resold
manufactured homes. The installer of a used, pre-owned or resold manufactured
home shall be responsible to insure that all necessary installation permits
have been obtained by the customer, retailer or installer. Compliance with
permanent foundation criteria, site work 14.12.5.9 NMAC, planning, and zoning,
slope and drainage requirements is the sole and separate responsibility of the
persons, companies or contractors performing such work. The manufacturer's
manual shall be kept with the subject home at all times. The installer shall
use the manufacturer's installation instructions and installation manual when
available.
E. Re-installed units:
The following regulations shall apply to all homes being re-installed where no
manufacturer's installation manual is provided.
(1) The lowest point of the frame shall be a
minimum of eighteen (18") inches above the ground level under the manufactured
home.
(2) The slope around the
manufactured home shall provide for the control and drainage of surface water
and shall be sufficient to prevent the collection of water under the home or
around the perimeter of the home.
F. A minimum thirty-two inch by thirty-two
inch (32"X32") access or inspection panel shall be installed a minimum of three
(3") inches above grade and located to allow inspection at any time. The cover
on the exterior access inspection panel must be constructed to exclude entry of
vermin and water.
G. Footings and
piers.
(1) The manufactured home shall be
installed on ribbon footings set on the undisturbed ground not less than five
and one-half (51/2") inches in thickness and sixteen (16") inches in width with
two (2) pieces of continuous three-eighth (3/8") inch rebar or a number 10
gauge re-mesh wire installed in the footing. All footings shall be constructed
of a minimum of three thousand (3000) pound concrete. All above grade footings
shall be constructed with forms (wood, fiberboard, metal, plastic), used to
contain poured concrete while in a plastic state. These forms must be firmly
braced to withstand side pressure or settlement and to maintain design
dimensions. Finished concrete surface(s) shall be smooth and level to fully
accept and support pier installation(s). Forms may be removed upon sufficient
hardening of concrete. The home may be placed whenever concrete is properly
cured, minimum of seven (7) days.
(2) Piers shall be constructed in accordance
with 14.12.5.10 NMAC of these regulations.
(3) The steel frame must be attached to the
footing supporting the structure by means of a listed anchoring device at least
every twelve (12) feet at a maximum and no more than two (2) feet from each end
wall.
H. Ventilation:
(1) All manufactured homes shall have one (1)
square foot of unrestricted venting area for every one hundred-fifty (150)
square feet of enclosed floor space. Vents shall be uniformly distributed on
the two (2) opposite long- walls. At least one vent shall be located within
four (4) feet of each end-wall.
(2)
Vents shall be constructed and installed to exclude entry of vermin and
water.
I. Alternative
permanent foundation systems:
(1) Other types
of permanent foundation systems designed for the purpose of classifying an
installation as a permanent foundation shall be submitted on an individual
basis. These require submittal of installation instructions, calculations and
design layouts. All submissions shall be stamped by a New Mexico licensed
engineer, and each application shall be region specific. Commercially packaged
systems must submit their complete installation and design package to be kept
on file with the division. It shall be the responsibility of the system
proprietor to submit any updates or alterations of the system.
(2) Any installation of an alternative
foundation system on a new home or any home within two years of original
purchase must be installed based upon the manufacturer's written approval or be
included in the manufacturer's installation manual.
