Standards of Practice
The National Association of Certified Home Inspectors
Standards of Practice
Table of Contents
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
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.
2.1. Roof
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
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 spacings
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
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
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
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
I. The inspector shall:
A. Inspect the main water shut off valve.
B. Inspect the water heating system.
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 potability 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.
2.7. Electrical
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 ground circuit interrupters.
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 weatherheads 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
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
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
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 central vacuums.
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:
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:
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:
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:
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.
- 4.1. Accessible:
- Can be approached or entered by the inspector safely, without
difficulty, fear or danger.
-
- 4.2. Activate:
- To turn on, supply power, or enable systems, equipment, or devices to
become active by normal operating controls. Examples include turning on the
gas or water supply valves to the fixtures and appliances and activating
electrical breakers or fuses.
- 4.3. Adversely Affect:
- Constitute, or potentially constitute, a negative or destructive impact.
- 4.4. Alarm System:
- Warning devices, installed or free-standing, including but not limited
to: Carbon monoxide detectors, flue gas and other spillage detectors,
security equipment, ejector pumps and smoke alarms.
- 4.5. Appliance:
- A household device operated by use of electricity or gas. Not included
in this definition are components covered under central heating, central
cooling or plumbing.
- 4.6. Architectural Service:
- Any practice involving the art and science of building design for
construction of any structure or grouping of structures and the use of space
within and surrounding the structures or the design, design development,
preparation of construction contract documents, and administration of the
construction contract.
- 4.7. Component:
- A permanently installed or attached fixture, element or part of a
system.
- 4.8. Condition:
- The visible and conspicuous state of being of an object.
- 4.9. Crawlspace:
- The area within the confines of the foundation and between the ground
and the underside of the lowest floor structural component.
- 4.10. Decorative:
- Ornamental; not required for the operation of essential systems and
components of a home.
- 4.11. Describe:
- Report in writing a system or component by its type, or other observed
characteristics, to distinguish it from other components used for the same
purpose.
- 4.12. Determine:
- To arrive at an opinion or conclusion pursuant to examination.
- 4.13. Dismantle:
- To open, take apart or remove any component, device or piece that would
not typically be opened, taken apart or removed by an ordinary occupant.
- 4.14. Engineering Service:
- Any professional service or creative work requiring engineering
education, training, and experience and the application of special knowledge
of the mathematical, physical and engineering sciences to such professional
service or creative work as consultation, investigation, evaluation,
planning, design and supervision of construction for the purpose of assuring
compliance with the specifications and design, in conjunction with
structures, buildings, machines, equipment, works or processes.
- 4.15. Enter:
- To go into an area to observe all visible components.
- 4.16. Evaluate:
- To assess the systems, structures or components of a dwelling.
- 4.17. Examine:
- To visually look. See Inspect.
- 4.18. Foundation:
- The base upon which the structure or wall rests; usually masonry,
concrete, or stone, and generally partially underground.
- 4.19. Function:
- The action for which an item, component, or system is specially fitted
or used or for which an item, component or system exists; to be in action or
perform a task.
- 4.20. Functional:
- Performing, or able to perform, a function.
- 4.21. Home Inspection:
- The process by which an inspector visually examines the readily
accessible systems and components of a home and operates those systems and
components utilizing these Standards of Practice as a guideline.
- 4.22. Household Appliances:
- Kitchen and laundry appliances, room air conditioners, and similar
appliances.
- 4.23. Inspect:
- To visually look at readily accessible systems and components safely,
using normal operating controls and accessing readily accessible panels and
areas.
- 4.24. Inspected Property:
- The readily accessible areas of the buildings, site, items, components,
and systems included in the inspection.
- 4.25. Inspector:
- One who performs a real estate inspection.
- 4.26. Installed:
- Attached or connected such that the installed item requires tool for
removal.
- 4.27. Material Defect:
- Refer to section 1.2.
- 4.28. Normal Operating Controls:
- Devices such as thermostats that would be operated by ordinary occupants
which require no specialized skill or knowledge.
- 4.29. Observe:
- To see through visually directed attention.
- 4.30. Operate:
- To cause systems to function or turn on with normal operating controls.
- 4.31. Readily Accessible:
- An item or component is readily accessible if, in the judgment of the
inspector, it is capable of being safely observed without movement of
obstacles, detachment or disengagement of connecting or securing devices, or
other unsafe or difficult procedures to gain access.
- 4.32. Recreational Facilities:
- Spas, saunas, steam baths, swimming pools, tennis courts, playground
equipment, and other exercise, entertainment or athletic facilities.
- 4.33. Report:
- A written communication (possibly including digital images) of any
material defects seen during the inspection.
- 4.34. Representative Number:
- A sufficient number to serve as a typical or characteristic example of
the item(s) inspected.
- 4.35. Safety Glazing:
- Tempered glass, laminated glass, or rigid plastic.
- 4.36. Shut Down:
- Turned off, unplugged, inactive, not in service, not operational, etc.
- 4.37. Structural Component:
- A component which supports non-variable forces or weights (dead loads)
and variable forces or weights (live loads).
- 4.38. System:
- An assembly of various components to function as a whole.
- 4.39. Technically Exhaustive:
- A comprehensive and detailed examination beyond the scope of a real
estate home inspection which would involve or include, but would not be
limited to: dismantling, specialized knowledge or training, special
equipment, measurements, calculations, testing, research, analysis or other
means.
- 4.40. Unsafe:
- A condition in a readily accessible, installed system or component which
is judged to be a significant risk of personal injury during normal,
day-to-day use. The risk may be due to damage, deterioration, improper
installation or a change in accepted residential construction standards.
4.41. Verify:
To confirm or substantiate.
 
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