BC Owner Builder Authorization 2026 ACTUAL EXAM REVIEW 150
QUESTIONS AND CORRECT ANWERS WI, Exams of Construction
Order of inspections - ANSWER1: forms, basement and crawlspace
2: Plumbing, dampproofing, foundation drainage , sanitary sewer, storm
sewer, sump, water service
3: plumbing, electrical, mechanical, gas
4: framing inspection
5: insulation and vapour barrier
6: rainscreen/exterior finishs, drywall
7: building envelop inspection
8: final inspection
Which is not an acceptable method for determining the correct grading for a
trench? - ANSWERAn experienced excavator says it's ok
At what depth is shoring required? - ANSWER1.2m/4ft
Which best describes the principle of rain waterterm-0 deflection? -
ANSWERDesign and construction that prevents water from ever entering
,What lighting safety certifications are required in Canada? - ANSWERCSA
safety certification
What grit of sandpaper would get the smoothest result? - ANSWERHigher grit
with get a smoother finish
What is the maximum rise in a flight of stairs? - ANSWERThe vertical height of
any flight of stairs should not exceed 3.7m
What is the minimum distance that a ladder must extend above a parapet
wall or landing? - ANSWER3ft
What heights are end dams to be on windows and door flashings? -
ANSWER25mm/1 inch
End dam use - ANSWERStop water from coming in
When should you call for inspectors to make them efficient as possible? -
ANSWERGroup inspectors together when possible and call when work is
complete
When is an HRV required? - ANSWERAlmost always
What can you build under the owner-builder HPO process? - ANSWERSingle
detached home under a single title. Single dwelling attached to pre-existing
building older than 10 years. Single dwelling attached to a new non-
residential building.
, Who issues permits for a gas fireplace? - ANSWERSafety Authority (call
Technical Safe BC)
Can an owner builder take out their own electrical permit? - ANSWERYes, up
to 200A
What is the best way to apply asphalt waterproofing on a foundation? -
ANSWERSpray-on or roll on dry foundation with 2in. below grade
When is the appropriate time to backfill a foundation? - ANSWERAfter damp-
proofing
What do you need to do when applying a peel and stick waterproof
membrane foundation? - ANSWERUse an approved primer before installing
What are gas meter installation requirements? - ANSWERThe distance from
the gas vent to the roof must be greater than the overhang of the roof,
nothing can be with in 1m either side or 4.5m above a gas meter
When do you need to install a handrail or have fall protection? -
ANSWER10ft, 4ft if no fall protection
How high does a construction fence around a site need to be? - ANSWER6ft
When installing the footer, it was dug down 2in. deeper than what the
elevation should be. What needs to happen? - ANSWERInstall the footing
form at proper elevation and fill with extra concrete
QUESTIONS AND CORRECT ANWERS WI, Exams of Construction
Order of inspections - ANSWER1: forms, basement and crawlspace
2: Plumbing, dampproofing, foundation drainage , sanitary sewer, storm
sewer, sump, water service
3: plumbing, electrical, mechanical, gas
4: framing inspection
5: insulation and vapour barrier
6: rainscreen/exterior finishs, drywall
7: building envelop inspection
8: final inspection
Which is not an acceptable method for determining the correct grading for a
trench? - ANSWERAn experienced excavator says it's ok
At what depth is shoring required? - ANSWER1.2m/4ft
Which best describes the principle of rain waterterm-0 deflection? -
ANSWERDesign and construction that prevents water from ever entering
,What lighting safety certifications are required in Canada? - ANSWERCSA
safety certification
What grit of sandpaper would get the smoothest result? - ANSWERHigher grit
with get a smoother finish
What is the maximum rise in a flight of stairs? - ANSWERThe vertical height of
any flight of stairs should not exceed 3.7m
What is the minimum distance that a ladder must extend above a parapet
wall or landing? - ANSWER3ft
What heights are end dams to be on windows and door flashings? -
ANSWER25mm/1 inch
End dam use - ANSWERStop water from coming in
When should you call for inspectors to make them efficient as possible? -
ANSWERGroup inspectors together when possible and call when work is
complete
When is an HRV required? - ANSWERAlmost always
What can you build under the owner-builder HPO process? - ANSWERSingle
detached home under a single title. Single dwelling attached to pre-existing
building older than 10 years. Single dwelling attached to a new non-
residential building.
, Who issues permits for a gas fireplace? - ANSWERSafety Authority (call
Technical Safe BC)
Can an owner builder take out their own electrical permit? - ANSWERYes, up
to 200A
What is the best way to apply asphalt waterproofing on a foundation? -
ANSWERSpray-on or roll on dry foundation with 2in. below grade
When is the appropriate time to backfill a foundation? - ANSWERAfter damp-
proofing
What do you need to do when applying a peel and stick waterproof
membrane foundation? - ANSWERUse an approved primer before installing
What are gas meter installation requirements? - ANSWERThe distance from
the gas vent to the roof must be greater than the overhang of the roof,
nothing can be with in 1m either side or 4.5m above a gas meter
When do you need to install a handrail or have fall protection? -
ANSWER10ft, 4ft if no fall protection
How high does a construction fence around a site need to be? - ANSWER6ft
When installing the footer, it was dug down 2in. deeper than what the
elevation should be. What needs to happen? - ANSWERInstall the footing
form at proper elevation and fill with extra concrete
