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NACHI National Association of Certified Home Inspectors...
Definitions and Scope

1.1. A Home inspection is a non-invasive visual examination of a
residential dwelling, performed for a fee, which is designed to
identify observed material defects within specific components of
said dwelling. Components may include any combination of
mechanical, structural, electrical, plumbing, or other essential
systems or portions of the home, as identified and agreed to by the
Client and Inspector, prior to or during the inspection process.
I. A home inspection is intended to assist in evaluation of
the overall condition of the dwelling. The inspection is based
on observation of the visible and apparent condition of the
structure and its components on the date of the inspection and
not the determination of future conditions.
II. A home inspection will not reveal every problem that
exists or ever could exist, but only those material defects
observed on the day of the inspection.
1.2. A Material defect is a problem with a residential real
property or any portion of it that would have a significant adverse
impact on the value of the property or that involves an unreasonable
risk to people on the property. The fact that a structural element,
system or subsystem is near, at or beyond the end of the normal
useful life of such a structural element, system or subsystem is not
by itself a material defect.
1.3. An Inspection report shall describe and identify in written
format the inspected systems, structures, and components of the
dwelling and shall identify material defects observed. Inspection
reports may contain recommendations regarding conditions reported or
recommendations for correction, monitoring or further evaluation by
professionals.
1.4 The National Association of
Certified Home Inspectors (NACHI) promotes a high standard of
professionalism, business ethics and inspection procedures.
2. Standards of Practice
top
2.1. Roof
2.2. Exterior
2.3. Basement,
Foundation, Crawlspace & Structure
2.4. Heating
2.5. Cooling
2.6. Plumbing
2.7. Electrical
2.8. Fireplace
2.9. Attic & Insulation
2.10. Doors, Windows & Interior
3.1. Limitations,
Exceptions & Exclusions
2.1. Roof
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I. The inspector shall inspect from ground level or eaves:
A. The roof covering.
B. The gutters.
C. The downspouts.
D. The vents, flashings, skylights, chimney and other roof
penetrations.
E. The general structure of the roof from the readily
accessible panels, doors or stairs.
II. The inspector is not required to:
A. Walk on any roof surface.
B. Predict the service life expectancy.
C. Inspect underground downspout diverter drainage pipes.
D. Remove snow, ice, debris or other conditions that
prohibit the observation of the roof surfaces.
E. Inspect antennae, lightning arresters, or similar
attachments.
2.2. Exterior
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I. The inspector shall inspect:
A. The flashing and trim.
B. All exterior doors, decks, stoops, steps, stairs,
porches, railings, eaves, soffits, fascias, grading, and
walkways.
C. And report as in need of repair any spacing's between
intermediate balusters, spindles, or rails for steps,
stairways, balconies, and railings that permit the
passage of an object greater than four inches in
diameter.
D. The vegetation, surface drainage and retaining walls
when these are likely to adversely affect the building.
E. And describe the exterior wall covering.
II. The inspector is not required to:
A. Inspect or operate screens, storm windows, shutters,
awnings, fences, outbuildings, or exterior accent
lighting.
B. Inspect items, including window and door flashings,
which are not visible or readily accessible from the
ground.
C. Inspect geological, geotechnical, or hydrological
conditions.
D. Inspect recreational facilities.
E. Inspect seawalls, break-walls and docks.
F. Inspect erosion control and earth stabilization
measures.
G. Inspect for safety type glass.
H. Inspect underground utilities.
I. Inspect underground items.
J. Inspect wells or springs.
K. Inspect solar systems.
L. Inspect swimming pools or spas.
M. Inspect septic systems or cesspools.
N. Inspect playground equipment.
O. Inspect sprinkler systems.
P. Inspect drain fields or drywells.
Q. Determine the integrity of the thermal window seals or
damaged glass.
2.3. Basement,
Foundation & Crawlspace
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I. The inspector shall inspect:
A. The basement.
B. The foundation
C. The crawlspace.
D. The visible structural components.
E. Any present conditions or indications of active water
penetration by probing a representative sampling of
structural components where deterioration is believed to
be present or where clear indications of deterioration are
present.
F. And report any general indications of foundation
movement that are observed, such as but not limited to
sheetrock cracks, brick cracks, out-of-square door
frames or floor slopes.
II. The inspector is not required to:
A. Enter any crawlspaces that are not readily accessible
or
where entry could cause damage or pose a hazard to
the inspector in his or her opinion.
B. Move stored items or debris.
C. Operate sump pumps with inaccessible floats.
D. Identify size, spacing, span, location or adequacy of
foundation bolting, bracing, joists or support systems.
E. Provide any engineering or architectural service.
F. Report on the adequacy of any structural system or
component.
2.4. Heating
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I. The inspector shall inspect:
A. The heating system and describe the energy source and
heating method using normal operating controls.
B. And report as in need of repair electric furnaces which
do not operate.
C. And report if inspector deemed the furnace inaccessible.
II. The inspector is not required to:
A. Inspect or evaluate interiors of flues or chimneys,
fire
chambers, the heat exchanger, the humidifier or
dehumidifier, the electronic air filter, solar heating
systems or fuel tanks.
B. Inspect underground fuel tanks.
C. Determine the uniformity, temperature, flow, balance,
distribution, size, capacity, BTU, or supply adequacy of
the heating system.
D. Light pilot flames.
E. Activate heating, heat pump systems, or other heating
systems when ambient temperatures or other
circumstances are not conducive to safe operation or
may damage the equipment.
F. Operate electronic thermostats.
G. Evaluate fuel quality.
2.5. Cooling
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I. The inspector shall inspect:
A. The central cooling equipment using normal operating
controls.
II. The inspector is not required to:
A. Determine the uniformity, temperature, flow, balance,
distribution, size, capacity, BTU, or supply adequacy of
the cooling system.
B. Inspect window units, through-wall units, or electronic
air filters.
C. Operate equipment or systems if exterior temperature is
below 60 degrees Fahrenheit or when other
circumstances are not conducive to safe operation or
may damage the equipment.
D. Inspect or determine thermostat calibration, heat
anticipation or automatic setbacks or clocks.
E. Examine electrical current, coolant fluids or gasses, or
coolant leakage.
2.6. Plumbing
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I. The inspector shall:
A. Inspect the main water
shut off valve.
B. Inspect the water heating equipment, including
combustion air, venting, connections, energy sources,
seismic bracing, and verify the presence or absence of
temperature-pressure relief valves and/or Watts 210
valves.
C. Flush toilets.
D. Run water in sinks, tubs, and showers.
E. Inspect the interior water supply including all
fixtures
and faucets.
F. Inspect the drain, waste and vent systems, including
all
fixtures.
G. Describe any visible fuel storage systems.
H. Inspect the drainage sump pumps testing sumps with
accessible floats.
I. Inspect and describe the water supply, drain, waste
and
main fuel shut-off valves, as well as the location of the
water main and main fuel shut-off valves.
J. Inspect and determine if the water supply is public
or
private.
K. Inspect and report as in need of repair deficiencies
in
the water supply by viewing the functional flow in two
fixtures operated simultaneously.
L. Inspect and report as in need of repair deficiencies
in
installation and identification of hot and cold faucets.
M. Inspect and report as in need of repair mechanical
drain-stops that are missing or do not operate if installed
in sinks, lavatories and tubs.
N. Inspect and report as in need of repair commodes that
have cracks in the ceramic material, are improperly
mounted on the floor, leak, or have tank components
which do not operate.
II. The inspector is not required to:
A. Light pilot flames.
B. Determine the size, temperature, age, life expectancy
or
adequacy of the water heater.
C. Inspect interiors of flues or chimneys, water
softening or
filtering systems, well pumps or tanks, safety or shut-of
valves, floor drains or sprinkler systems.
D. Determine the exact flow rate, volume, pressure,
temperature, or adequacy of the water supply.
E. Determine the water quality or pot ability or the
reliability
of the water supply or source.
F. Open closed plumbing access panels.
G. Inspect clothes washing machine connections.
H. Operate any main, branch or fixture valve except
fixture
faucets and hose faucets attached to the building.
I. Test shower pans, tub and shower surrounds or
enclosures for leakage.
J. Evaluate the compliance with local or state
conservation
or energy standards, or the proper design or sizing of
any water, waste or venting components, fixtures or
piping.
K. Determine the effectiveness of anti-siphon, back-flow
prevention or drain-stop devices.
L. Determine whether there are sufficient clean-outs for
effective cleaning of drains.
M. Evaluate gas, liquid propane or oil storage tanks.
N. Excavate or otherwise uncover the private sewage
system or its components to determine size, adequacy
or efficiency.
O. Inspect water treatment systems or water filters.
P. Inspect pressure pumps or bladder tanks.
Q. Evaluate time to
obtain hot water at fixtures, or perform
testing of any kind to water heater elements.
R. Evaluate or determine
the adequacy of combustion air.
S. Test, operate, open
or close Watts 210 valves and/or
TPR valves.
T. Examine ancillary
systems or components, such as, but
not limited to, those relating to solar water heating, hot
water circulation.
2.7. Electrical
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I. The inspector shall inspect:
A. The service line.
B. The meter box.
C. The main disconnect.
D. And determine the service amperage.
E. Panels, breakers and fuses.
F. The grounding.
G. The bonding.
H. A representative sampling of switches, receptacles,
light
fixtures, and test all GFCI receptacles and GFCI circuit
breakers observed and deemed to be GFCI's during the
inspection.
I. And report the presence
of solid conductor aluminum
branch circuit wiring if readily visible.
J. And report on any GFCI-tested receptacles in which
power is not present, polarity is incorrect, the
receptacle is not grounded, is not secured to the wall,
the cover is not in place, the ground fault circuit
interrupter devices are not properly installed or do not
operate properly, or evidence of arcing or excessive heat
is present.
K. The service entrance conductors and the
condition of
their sheathing.
L. The ground fault circuit interrupters with a GFCI
tester.
M. And describe the amperage rating of the service.
N. And report the absence of smoke detectors.
O. Service entrance cables and report as in need of
repair
deficiencies in the integrity of the insulation, drip loop,
or
separation of conductors at weather heads and
clearances.
II. The inspector is not required to:
A. Insert any tool, probe or device
into the main or sub
-panels.
B. Operate electrical systems that are shut down.
C. Remove panel covers or dead front covers if not readily
accessible.
D. Operate over current protection devices.
E. Operate non-accessible smoke detectors.
F. Measure or determine the amperage or voltage of the
main service if not visibly labeled.
G. Inspect the alarm system and components.
H. Inspect the ancillary wiring.
I. Activate any electrical systems or branch circuits which
are not energized.
J. Operate overload devices.
K. Inspect low voltage systems, electrical de-icing tapes,
swimming pool wiring or any time-controlled devices.
L. Verify the continuity of the connected service ground.
M. Inspect private or emergency electrical supply sources,
including but not limited to generators, windmills,
photovoltaic solar collectors, or battery or electrical
storage facility.
N. Inspect spark or lightning arrestors.
O. Conduct drop voltage calculations.
P. Determine the accuracy of breaker labeling.
2.8. Fireplace
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I. The inspector shall inspect:
A. The fireplace, and open and close
the damper door if
readily accessible and operable.
B. Hearth extensions and other permanently installed
components.
C. And report as in need of repair deficiencies in the
lintel,
hearth and material surrounding the fireplace, including
clearance from combustible materials
II. The inspector is not required to:
A. Inspect the vent system.
B. Inspect the interior of the chimney or flue, fire doors
or
screens, seals or mantels.
C. Determine the need for a chimney sweep.
D. Operate gas fireplace inserts.
E. Light pilot flames.
F. Determine the appropriateness of such installation.
G. Inspect automatic fuel feed devices.
H. Inspect combustion make up devices.
I. Inspect heat distribution assists whether gravity
controlled or fan assisted.
J. Ignite or extinguish fires.
K. Determine draft characteristics.
L. Move fireplace inserts, stoves, or firebox contents.
M. Determine adequacy of draft, perform a smoke test or
dismantle or remove any component.
2.9.
Attic, Ventilation &
Insulation
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I. The inspector shall inspect:
A. The insulation in unfinished
spaces.
B. The ventilation of attic spaces.
C. Mechanical ventilation systems.
D. And report on the general absence or lack of insulation.
II. The inspector is not required to:
A. Enter the attic or unfinished
spaces that are not readily
accessible or where entry could cause damage or pose
a safety hazard to the inspector in his or her opinion.
B. To move or touch insulation.
C. To move or touch vapor retarders.
D. Break or otherwise damage the surface finish or weather
seal on or around access panels and covers.
E. Identify the composition or the exact R-value of
insulation material.
F. Activate thermostatically operated fans.
G. Determine the types of materials used in
insulation/wrapping of pipes, ducts, jackets, boilers, and
wiring.
2.10.
Doors, Windows & Interior
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I. The inspector shall:
A. Open and close a representative
number of doors and
windows.
B. Inspect the walls, ceilings, steps, stairways, and
railings.
C. Inspect garage doors and garage door openers by
operating first by remote (if available) and then by the
installed automatic door control.
D. And report as in need of repair any installed electronic
sensors that are not operable or not installed at
proper
heights above the garage door.
E. And report as in need of repair any door locks or side
ropes that have not been removed or disabled when
garage door opener is in use.
F. And report as in need of repair any windows that are
obviously fogged or display other evidence of broken
seals.
II. The inspector is not required to:
A. Inspect paint, wallpaper, window treatments or finish
treatments.
B. Inspect central vacuum systems.
C. Inspect safety glazing in locations subject to human
impact.
D. Inspect security components.
E. Evaluate the fastening of countertops, cabinets, sink
tops and fixtures, or firewall compromises.
F. Move furniture, stored items, or any coverings like
carpets or rugs in order to inspect the concealed floor
structure.
G. Move drop ceiling tiles.
H. Inspect or move any household appliances.
I. Inspect or operate equipment housed in the garage
except as otherwise noted.
J. Verify or certify safe operation of any auto reverse or
related safety function of a garage door.
K. Operate or evaluate security bar release and opening
mechanisms, whether interior or exterior, including
compliance with local, state, or federal standards.
L. Operate any system, appliance or component that
requires the use of special keys, codes, combinations,
or devices.
M. Operate or evaluate self-cleaning oven cycles or signal
lights.
N. Determine leakage from microwave ovens.
O. Operate or examine any sauna, steam-jenny, kiln,
toaster, ice-maker, coffee-maker, can-opener, bread
-warmer, blender, instant hot water dispenser, or other
small, ancillary devices.
P. Inspect elevators.
Q. Inspect remote controls.
R. Inspect appliances.
S. Inspect items not permanently installed.
T. Examine or operate any above-ground, movable,
freestanding, or otherwise non-permanently installed
pool/spa or self-contained equipment.
U. Come into contact with any pool or spa water in order to
determine the system structure or components.
V. Determine the adequacy of spa jet water force or bubble
effect.
W. Determine the structural integrity or leakage of a pool
or
spa.
3.1. Limitations:
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I. An inspection is not technically exhaustive.
II. An inspection will not identify concealed or latent
defects.
III. An inspection will not deal with aesthetic concerns or what
could be
deemed matters of taste, cosmetic, etc.
IV. An inspection will not determine the suitability of the
property for any
use.
V. An inspection does not determine the market value of the
property or
its marketability.
VI. An inspection does not determine the advisability or
inadvisability of
the purchase of the inspected property.
VII. An inspection does not determine the life expectancy of the
property
or any components or systems therein.
VIII. An inspection does not include items not permanently
installed.
IX. These Standards of Practice apply only to homes with four or
fewer
dwelling units.
3.2. Exclusions:
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I. The inspectors are not required to determine:
A. Property boundary lines or encroachments.
B. The condition of any component or system that is not
readily accessible.
C. The service life expectancy of any component or
system.
D. The size, capacity, BTU, performance, or efficiency of
any component or system.
E. The cause or reason of any condition.
F. The cause for the need of repair or replacement of any
system or component.
G. Future conditions.
H. The compliance with codes or regulations.
I. The presence of evidence of rodents, animals or insects.
J. The presence of mold, mildew or fungus.
K. The presence of air-borne hazards.
L. The presence of birds.
M. The presence of other flora or fauna.
N. The air quality.
O. The existence of asbestos.
P. The existence of environmental hazards.
Q. The existence of electro-magnetic fields.
R. The presence of hazardous materials including, but not
limited to, the presence of lead in paint.
S. Any hazardous waste conditions.
T. Any manufacturer recalls or conformance with
manufacturer installation or any information included in
the consumer protection bulletin.
U. Operating costs of systems.
V. Replacement or repair cost estimates.
W. The acoustical properties of any systems.
X. Estimates of how much it will cost to run any given
system.
II. The inspectors are not required to operate:
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A. Any system that is shut down.
B. Any system that does not function properly.
C. Or evaluate low voltage electrical systems such as, but
not limited to:
1. Phone lines.
2. Cable lines.
3. Antennae.
4. Lights.
5. Remote controls.
D. Any system that does not turn on with the use of normal
operating controls.
E. Any shut off valve.
F. Any electrical disconnect or over current protection
devices.
G. Any alarm systems.
H. Moisture meters, gas detectors or similar equipment.
III. The inspectors are not required to:
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A. Move any personal items or other obstructions, such
as, but not limited to:
1. Throw rugs.
2. Furniture.
3. Floor or wall coverings.
4. Ceiling tiles
5. Window coverings.
6. Equipment.
7. Plants.
8. Ice.
9. Debris.
10. Snow.
11. Water.
12. Dirt.
13. Foliage.
14. Pets
B. Dismantle, open, or uncover any system or component.
C. Enter or access any area which may, in the opinion of
the inspector, to be unsafe or risk personal safety.
D. Enter crawlspaces or other areas that are unsafe or not
readily accessible.
E. Inspect underground items such as, but not limited to,
underground storage tanks or other indications of their
presence, whether abandoned or actively used.
F. Do anything which, in the inspector's opinion, is likely
to
be unsafe or dangerous to the inspector or others or
damage property, such as, but not limited to, walking on
roof surfaces, climbing ladders, entering attic spaces or
negotiating with dogs.
G. Inspect decorative items.
H. Inspect common elements or areas in multi-unit
housing.
I. Inspect intercoms, speaker systems,
radio-controlled,
security devices or lawn irrigation systems.
J. Offer guarantees or warranties.
K. Offer or perform any engineering services.
L. Offer or perform any trade or professional service other
than home inspection.
M. Research the history of the property, report on its
potential for alteration, modification, extendibility, or its
suitability for a specific or proposed use for occupancy.
N. Determine the age of construction or installation of any
system structure, or component of a building, or
differentiate between original construction or subsequent
additions, improvements, renovations or replacements
thereto.
O. Determine the insurability of a property.
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