New Jersey Residential Building
Inspector Examination Questions And
Correct Answers (Verified Answers) Plus
Rationale 2026 Q&A| Instant Download
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1. What is the primary purpose of the residential building code?
A. To increase construction costs
B. To promote uniform construction finishes
C. To safeguard public health, safety, and general welfare
D. To encourage complex design
Rationale: Building codes exist to protect health, safety, and welfare
through minimum construction standards.
2. Which document typically authorizes the start of residential
construction?
A. Certificate of occupancy
B. Building permit
C. Zoning variance
D. Plat map
Rationale: A building permit grants legal permission to begin
construction work.
3. Who is responsible for obtaining the building permit?
A. Inspector
B. Lender
, C. Owner or authorized agent/contractor
D. Surveyor
Rationale: The owner or authorized agent is responsible for applying
for and obtaining the permit.
4. Which code section typically governs one- and two-family dwellings?
A. International Building Code (IBC)
B. International Residential Code (IRC)
C. International Existing Building Code (IEBC)
D. International Fire Code (IFC)
Rationale: The IRC covers detached one- and two-family dwellings
and townhouses up to three stories.
5. What is the maximum story height for townhouses regulated by the
IRC?
A. Two stories
B. Three stories
C. Four stories
D. Five stories
Rationale: The IRC regulates townhouses up to three stories in height
above grade plane.
6. A certificate of occupancy is issued when:
A. The foundation is poured
B. Rough framing is complete
C. After insulation inspection
D. Final inspection confirms compliance
Rationale: A CO is issued only after the inspector verifies full
compliance at final inspection.
7. What is the minimum headroom required for stairways in residential
occupancies?
A. 6′ 4″
B. 6′ 6″
, C. 6′ 8″
D. 7′ 0″
Rationale: The IRC requires at least 6 feet 8 inches of headroom
measured vertically from stair tread nosings.
8. Which of the following requires inspection before backfilling?
A. Roof sheathing
B. Drywall
C. Foundation wall waterproofing/drainage system D.
Exterior siding
Rationale: Foundation waterproofing and drainage must be
inspected prior to backfill to ensure installation.
9. Which soil condition presents the greatest concern for foundation
stability? A. Sandy soil
B. Expansive clay
C. Gravel soil
D. Bedrock
Rationale: Expansive clays shrink and swell with moisture, causing
significant structural movement.
10. Anchor bolts in sill plates are primarily used to resist:
A. Dead load
B. Uplift and lateral forces
C. Thermal expansion
D. Settlement
Rationale: Anchor bolts connect sill plates to foundations to resist
wind and seismic uplift and lateral loads.
11. The minimum compressive strength of concrete for typical
residential foundations is generally:
A. 1500 psi
B. 2000 psi
C. 2500–3000 psi
D. 4000 psi
Inspector Examination Questions And
Correct Answers (Verified Answers) Plus
Rationale 2026 Q&A| Instant Download
1. What is the primary purpose of the residential building code?
A. To increase construction costs
B. To promote uniform construction finishes
C. To safeguard public health, safety, and general welfare
D. To encourage complex design
Rationale: Building codes exist to protect health, safety, and welfare
through minimum construction standards.
2. Which document typically authorizes the start of residential
construction?
A. Certificate of occupancy
B. Building permit
C. Zoning variance
D. Plat map
Rationale: A building permit grants legal permission to begin
construction work.
3. Who is responsible for obtaining the building permit?
A. Inspector
B. Lender
, C. Owner or authorized agent/contractor
D. Surveyor
Rationale: The owner or authorized agent is responsible for applying
for and obtaining the permit.
4. Which code section typically governs one- and two-family dwellings?
A. International Building Code (IBC)
B. International Residential Code (IRC)
C. International Existing Building Code (IEBC)
D. International Fire Code (IFC)
Rationale: The IRC covers detached one- and two-family dwellings
and townhouses up to three stories.
5. What is the maximum story height for townhouses regulated by the
IRC?
A. Two stories
B. Three stories
C. Four stories
D. Five stories
Rationale: The IRC regulates townhouses up to three stories in height
above grade plane.
6. A certificate of occupancy is issued when:
A. The foundation is poured
B. Rough framing is complete
C. After insulation inspection
D. Final inspection confirms compliance
Rationale: A CO is issued only after the inspector verifies full
compliance at final inspection.
7. What is the minimum headroom required for stairways in residential
occupancies?
A. 6′ 4″
B. 6′ 6″
, C. 6′ 8″
D. 7′ 0″
Rationale: The IRC requires at least 6 feet 8 inches of headroom
measured vertically from stair tread nosings.
8. Which of the following requires inspection before backfilling?
A. Roof sheathing
B. Drywall
C. Foundation wall waterproofing/drainage system D.
Exterior siding
Rationale: Foundation waterproofing and drainage must be
inspected prior to backfill to ensure installation.
9. Which soil condition presents the greatest concern for foundation
stability? A. Sandy soil
B. Expansive clay
C. Gravel soil
D. Bedrock
Rationale: Expansive clays shrink and swell with moisture, causing
significant structural movement.
10. Anchor bolts in sill plates are primarily used to resist:
A. Dead load
B. Uplift and lateral forces
C. Thermal expansion
D. Settlement
Rationale: Anchor bolts connect sill plates to foundations to resist
wind and seismic uplift and lateral loads.
11. The minimum compressive strength of concrete for typical
residential foundations is generally:
A. 1500 psi
B. 2000 psi
C. 2500–3000 psi
D. 4000 psi
