HOME INSPECTOR NATIONAL EXAM
Questions with 100% Correct
Answers Latest Versions 2025
GRADED A+
In plumbing systems, supports for 1 inch copper or copper alloy tubing run horizontal shall
not be spaced more than feet apart. - 6 feet
On stairways, the maximum riser height shall be inches - 7 3/4 inches
Wood structural panels with a minimum thickness of inch and a
maximum span of feet shall be permitted for opening protection in
windborne debris regions - 7/16 inch , 8 feet
Where equipment replacements and repairs must be performed in an emergency situation,
the permit application shall be submitted within the business day. - Next working
Where a referenced code or standard includes subject matter that is within the scope of the
IRC, the provisions of the shall take precedence. - IRC
Freestanding or built-in ranges shall have a vertical clearance above the cooking top of not
less than inches to unprotected combustible material. - 30 inches
,Where a masonry fireplace opening is less than 6 square feet, hearth extensions shall
extend at least inches in front of and at least inches beyond each side of the
fireplace opening. - 16 inches , 8 inches
Enclosed accessible space under stairs shall have walls, under-stair surface and any soffits
protected on the enclosed side with inch gypsum board. - 1/2 inch
There shall be at least inches clearance in front of the water closet, bidet or lavatory
to any wall, fixture or door. - 21 inches
Type I handrail with a circular cross section shall have an outside diameter of at least
inches and not greater than inches - 1 1/4 inches , 2 inches
Switches shall not be more than feet inches above the floor or working
platform when the switch is in its highest position. - 6 ft. 7 in.
Wood studs in nonbearing partitions may be notched to a depth not exceeding
percent of a single stud width. - 40%
The landing on the exterior side of required egress door is permitted to be a maximum of
inches below the top of the threshold provided the door does not swing over the
landing. - 7 3/4 inches
Mechanical appliances having an ignition source shall be elevated such that the source of
ignition is not less than inches above the floor in garages. - 18 inches
In no case shall the point of attachment for service-drop conductors be less than feet
above finished grade. - Finished grade - 10 feet
Driveway - 12 feet
Ground - 12 feet
Street - 18 feet
Pools - 22.5
( horizontal - 10ft )
Diving board / platform - 14.5 feet
Any wood stud in an exterior wall or bearing partition may be cut or notched to a depth not
exceeding percent of its width. - 25 %
Required guards shall not have openings from the walking surface to the required guard
height which allow passage of a sphere inches in diameter. - 4 inch
Wood wall framing supporting 3/8 inch gypsum board shall not be spaced more than
inches on center. - 16 inches
,Unused openings in cabinets and panelboards shall be effectively to afford
protection equivalent to that of the wall of the cabinet. - Closed
A minimum of branch circuit shall be provided to supply the bathroom receptacle
outlet(s). Such circuits shall have no other outlets. - One 20- amp
At least one receptacle outlet in bathrooms is required to be within inches of each
lavatory basin. - 36 inches
Other habitable rooms shall have a floor area of not less than square feet. - 70 sq. ft.
When joists, trusses or rafters are spaced more than 16 inches on center and the bearing
studs below are spaced 24 inches on center, such members shall bear within inches of
the studs beneath. - 5 inches
Mechanical appliances suspended from the floor shall have a clearance of no less than
inches from the ground. - 6 inches
Hollow masonry piers shall be capped with inches of solid masonry or concrete or a
masonry cap block. - 4 inches
Grout shall not be pumped through pipes. - Aluminum
An application for a permit of any proposed work shall be deemed to have been abandoned
days after the date of filing. - 180 days
Roof drip edge shall be mechanically fastened to the roof deck at a maximum of inches
on center with minimum end laps of inches. - 12 inches, 2 inches
A finished or unfinished area, not considered a story, where the occupiable space is
enclosed by the roof assembly above and the floor-ceiling assembly below is a . -
Habitable attic
There shall be a floor or at the top and bottom of each stairway. - Landing
Where the roof sheathing is less than inch thick, the fasteners for asphalt shingles shall
penetrate through the sheathing. - 3/4 inch
In combustible construction, fireblocking shall be provided to cut off all concealed draft
openings and to form an effective fire barrier between . - Stories
Garages shall be separated from residences and attics by not less than -inch gypsum
board or equivalent applied to the garage side. - 1/2 inch
, Trenching installed parallel to footings shall not extend below the -degree bearing
plane of the bottom edge of a wall or footing. - 45*
Domestic clothes dryer transition ducts shall be metal and limited to a single length not to
exceed feet. - 8 feet
When doing an air test on DWV systems during rough in plumbing, the portion under test
shall be maintained at psi for minutes. - 5 psi. , 15 minutes
Where a space for a is provided, an exhaust duct
system shall be installed. - Clothes dryer
Combustible material within inches of the fireplace opening shall not project more than
1/8 inch for each 1-inch distance from such opening. - 12 inches
Masonry chimney walls or chimney flue linings shall not change in size or shape within
inches above or below where the chimney passes through floor, ceiling or roof
components. - 6 inches
The required egress door for each dwelling shall be side-hinged, and shall provide a
minimum clear width of inches. - 32 inches
The drainage fixture unit (d.f.u.) value of a dishwasher is .-2
In Seismic Design Categories D0, D1 and D2, stone masonry walls shall not be used -
Rubble
In cold formed steel framing, floor cantilevers for the top floor of a two or three story
building or the first floor of a one story building shall not exceed inches. - 24 inches
In two story building located in seismic design category D2, all braced wall panels shall be
supported on foundations. - Continuous
The ends of each floor joists, beam or girder shall have not less than inches of bearing
on wood or metal and not less than inches on masonry or concrete. - 1.5 inches and 3
inches
Collar ties shall be a minimum of 1-inch by 4-inch, spaced not more than feet on
center. - 4 feet
Connected to establish electrical continuity and conductivity. - Bonded (bonding)
Before issuing a permit, the building official is to examine or cause to be examined
buildings, structures and sites for which an applicant has been filed. - Authorized
Questions with 100% Correct
Answers Latest Versions 2025
GRADED A+
In plumbing systems, supports for 1 inch copper or copper alloy tubing run horizontal shall
not be spaced more than feet apart. - 6 feet
On stairways, the maximum riser height shall be inches - 7 3/4 inches
Wood structural panels with a minimum thickness of inch and a
maximum span of feet shall be permitted for opening protection in
windborne debris regions - 7/16 inch , 8 feet
Where equipment replacements and repairs must be performed in an emergency situation,
the permit application shall be submitted within the business day. - Next working
Where a referenced code or standard includes subject matter that is within the scope of the
IRC, the provisions of the shall take precedence. - IRC
Freestanding or built-in ranges shall have a vertical clearance above the cooking top of not
less than inches to unprotected combustible material. - 30 inches
,Where a masonry fireplace opening is less than 6 square feet, hearth extensions shall
extend at least inches in front of and at least inches beyond each side of the
fireplace opening. - 16 inches , 8 inches
Enclosed accessible space under stairs shall have walls, under-stair surface and any soffits
protected on the enclosed side with inch gypsum board. - 1/2 inch
There shall be at least inches clearance in front of the water closet, bidet or lavatory
to any wall, fixture or door. - 21 inches
Type I handrail with a circular cross section shall have an outside diameter of at least
inches and not greater than inches - 1 1/4 inches , 2 inches
Switches shall not be more than feet inches above the floor or working
platform when the switch is in its highest position. - 6 ft. 7 in.
Wood studs in nonbearing partitions may be notched to a depth not exceeding
percent of a single stud width. - 40%
The landing on the exterior side of required egress door is permitted to be a maximum of
inches below the top of the threshold provided the door does not swing over the
landing. - 7 3/4 inches
Mechanical appliances having an ignition source shall be elevated such that the source of
ignition is not less than inches above the floor in garages. - 18 inches
In no case shall the point of attachment for service-drop conductors be less than feet
above finished grade. - Finished grade - 10 feet
Driveway - 12 feet
Ground - 12 feet
Street - 18 feet
Pools - 22.5
( horizontal - 10ft )
Diving board / platform - 14.5 feet
Any wood stud in an exterior wall or bearing partition may be cut or notched to a depth not
exceeding percent of its width. - 25 %
Required guards shall not have openings from the walking surface to the required guard
height which allow passage of a sphere inches in diameter. - 4 inch
Wood wall framing supporting 3/8 inch gypsum board shall not be spaced more than
inches on center. - 16 inches
,Unused openings in cabinets and panelboards shall be effectively to afford
protection equivalent to that of the wall of the cabinet. - Closed
A minimum of branch circuit shall be provided to supply the bathroom receptacle
outlet(s). Such circuits shall have no other outlets. - One 20- amp
At least one receptacle outlet in bathrooms is required to be within inches of each
lavatory basin. - 36 inches
Other habitable rooms shall have a floor area of not less than square feet. - 70 sq. ft.
When joists, trusses or rafters are spaced more than 16 inches on center and the bearing
studs below are spaced 24 inches on center, such members shall bear within inches of
the studs beneath. - 5 inches
Mechanical appliances suspended from the floor shall have a clearance of no less than
inches from the ground. - 6 inches
Hollow masonry piers shall be capped with inches of solid masonry or concrete or a
masonry cap block. - 4 inches
Grout shall not be pumped through pipes. - Aluminum
An application for a permit of any proposed work shall be deemed to have been abandoned
days after the date of filing. - 180 days
Roof drip edge shall be mechanically fastened to the roof deck at a maximum of inches
on center with minimum end laps of inches. - 12 inches, 2 inches
A finished or unfinished area, not considered a story, where the occupiable space is
enclosed by the roof assembly above and the floor-ceiling assembly below is a . -
Habitable attic
There shall be a floor or at the top and bottom of each stairway. - Landing
Where the roof sheathing is less than inch thick, the fasteners for asphalt shingles shall
penetrate through the sheathing. - 3/4 inch
In combustible construction, fireblocking shall be provided to cut off all concealed draft
openings and to form an effective fire barrier between . - Stories
Garages shall be separated from residences and attics by not less than -inch gypsum
board or equivalent applied to the garage side. - 1/2 inch
, Trenching installed parallel to footings shall not extend below the -degree bearing
plane of the bottom edge of a wall or footing. - 45*
Domestic clothes dryer transition ducts shall be metal and limited to a single length not to
exceed feet. - 8 feet
When doing an air test on DWV systems during rough in plumbing, the portion under test
shall be maintained at psi for minutes. - 5 psi. , 15 minutes
Where a space for a is provided, an exhaust duct
system shall be installed. - Clothes dryer
Combustible material within inches of the fireplace opening shall not project more than
1/8 inch for each 1-inch distance from such opening. - 12 inches
Masonry chimney walls or chimney flue linings shall not change in size or shape within
inches above or below where the chimney passes through floor, ceiling or roof
components. - 6 inches
The required egress door for each dwelling shall be side-hinged, and shall provide a
minimum clear width of inches. - 32 inches
The drainage fixture unit (d.f.u.) value of a dishwasher is .-2
In Seismic Design Categories D0, D1 and D2, stone masonry walls shall not be used -
Rubble
In cold formed steel framing, floor cantilevers for the top floor of a two or three story
building or the first floor of a one story building shall not exceed inches. - 24 inches
In two story building located in seismic design category D2, all braced wall panels shall be
supported on foundations. - Continuous
The ends of each floor joists, beam or girder shall have not less than inches of bearing
on wood or metal and not less than inches on masonry or concrete. - 1.5 inches and 3
inches
Collar ties shall be a minimum of 1-inch by 4-inch, spaced not more than feet on
center. - 4 feet
Connected to establish electrical continuity and conductivity. - Bonded (bonding)
Before issuing a permit, the building official is to examine or cause to be examined
buildings, structures and sites for which an applicant has been filed. - Authorized
