New York Home Inspector License Exam 2026: 190 Practice
Questions with Verified Answers & Rationales – NYS DOS
Licensing Prep
Exam Overview:
The New York State Home Inspector licensing exam, developed by the Department of
State, evaluates competency across three domains: Property and Building Systems,
Analysis of Findings and Reporting, and Professional Responsibilities & License Law.
Candidates must complete 140 hours of approved coursework plus 40 hours of unpaid field-
based training, or 100 supervised inspections, to be eligible for the exam.
SECTION 1: STRUCTURAL SYSTEMS & FOUNDATIONS (Questions 1-35)
Q1. A home inspector observes a hairline crack running diagonally from the corner of
a basement window toward the foundation footing. The crack measures
approximately 1/16 inch in width and shows no displacement. What is the MOST
appropriate conclusion?
Answer: The crack may be related to normal settlement but should be documented and
monitored.
Rationale: Hairline diagonal cracks without displacement are often associated with minor
settlement. While the crack may not indicate structural failure, inspectors should document
its location, dimensions, and characteristics. Home inspectors are not authorized to provide
engineering determinations without additional evaluation.
Q2. During a home inspection, you observe horizontal cracks in a basement
foundation wall. What should the inspector report?
Answer: Possible structural movement requiring further evaluation.
Rationale: Horizontal cracks may indicate structural pressure or foundation failure. Unlike
vertical hairline shrinkage cracks, horizontal cracking is more concerning and often
suggests lateral soil pressure or hydrostatic forces acting on the foundation wall.
,Q3. What is the minimum bearing length required for a floor joist on a wood sill plate
in wood frame construction?
Answer: 1½ inches.
Rationale: Building code requires a minimum of 1½ inches of bearing for floor joists on
wood or metal to ensure adequate load transfer. Insufficient bearing can lead to structural
failure.
Q4. A home with balloon framing is most likely to have which fire-safety deficiency?
Answer: Lack of fire-blocking at floor lines.
Rationale: Balloon framing creates open wall cavities that act as chimneys during a fire;
fire-blocking at each floor level is required to slow fire spread. This is a significant safety
concern identified during inspections.
Q5. A poured concrete foundation wall exhibits a vertical hairline crack with no
displacement. The most likely cause is:
Answer: Normal shrinkage during curing.
Rationale: Vertical, narrow, non-displaced cracks in new concrete are typically shrinkage
cracks from the curing process. These are not structural concerns and are common in newly
poured foundations.
Q6. What is the primary function of a sill plate in wood-framed construction?
Answer: To anchor the building to the foundation and support floor joists.
Rationale: The sill plate sits on the foundation, anchors the frame with bolts, and provides
bearing for floor joists. It is a critical structural connection point.
Q7. A foundation wall exhibits horizontal cracking accompanied by inward bowing.
What is the greatest concern?
Answer: Lateral soil pressure affecting structural integrity.
,Rationale: Horizontal cracks and wall displacement frequently indicate significant structural
stress caused by soil pressure. This condition requires professional engineering evaluation.
Q8. In New York, what is the minimum clearance required between the ground and
wood siding such as T-111?
Answer: 6 inches.
Rationale: A 6-inch clearance protects wood siding from moisture wicking, splash-back,
and termite access. This is a key code requirement to prevent wood decay and insect
infestation.
Q9. A wood deck ledger board is attached directly over siding rather than properly
flashed and secured to structural framing. What is the primary concern?
Answer: Potential deck failure and moisture intrusion.
Rationale: Improper ledger attachment is a major contributor to deck collapses. Moisture
intrusion may also accelerate hidden decay that compromises structural safety.
Q10. What is the most likely cause of a diagonal crack running from the corner of a
basement window?
Answer: Stress concentration at the window opening due to settlement or thermal
movement.
Rationale: Window corners are stress risers in foundation walls. Diagonal cracking from
these points often indicates differential settlement or thermal expansion/contraction
stresses.
Q11. During a crawlspace inspection, you observe softened, discolored floor joists.
What does this MOST likely indicate?
Answer: Wood decay caused by elevated moisture levels.
Rationale: Persistent dampness in a crawlspace promotes wood-decaying fungi; softened,
discolored wood is typical of rot, not surface staining. This condition requires further
evaluation.
, Q12. What is the function of a drainage tile installed at a building's foundation?
Answer: To collect and divert groundwater away from foundation footings.
Rationale: A drainage tile (French drain) is a pipe set in gravel running continuously along
the exterior of a building's foundation footings to collect groundwater and direct it away,
preventing hydrostatic pressure and water intrusion.
Q13. A foundation wall shows evidence of efflorescence. What does this indicate?
Answer: Moisture migration through the foundation material.
Rationale: Efflorescence forms when water dissolves salts within masonry and deposits
them on the surface as moisture evaporates. It indicates water penetration through the
foundation and should be documented.
Q14. Which condition in a crawlspace is MOST concerning?
Answer: Standing water.
Rationale: Moisture can cause mold growth, wood rot, and structural deterioration.
Standing water in a crawlspace requires immediate investigation and correction.
Q15. What should be reported when observing negative grading around a
foundation?
Answer: Drainage condition increasing moisture risk near foundation.
Rationale: Negative grading directs surface water toward the building, which can lead to
basement moisture problems and foundation damage. This should be reported as a
concern.
SECTION 2: ROOFING SYSTEMS (Questions 16-40)
Q16. A roof has missing shingles and visible water stains in the attic. What is the
MOST appropriate conclusion?
Questions with Verified Answers & Rationales – NYS DOS
Licensing Prep
Exam Overview:
The New York State Home Inspector licensing exam, developed by the Department of
State, evaluates competency across three domains: Property and Building Systems,
Analysis of Findings and Reporting, and Professional Responsibilities & License Law.
Candidates must complete 140 hours of approved coursework plus 40 hours of unpaid field-
based training, or 100 supervised inspections, to be eligible for the exam.
SECTION 1: STRUCTURAL SYSTEMS & FOUNDATIONS (Questions 1-35)
Q1. A home inspector observes a hairline crack running diagonally from the corner of
a basement window toward the foundation footing. The crack measures
approximately 1/16 inch in width and shows no displacement. What is the MOST
appropriate conclusion?
Answer: The crack may be related to normal settlement but should be documented and
monitored.
Rationale: Hairline diagonal cracks without displacement are often associated with minor
settlement. While the crack may not indicate structural failure, inspectors should document
its location, dimensions, and characteristics. Home inspectors are not authorized to provide
engineering determinations without additional evaluation.
Q2. During a home inspection, you observe horizontal cracks in a basement
foundation wall. What should the inspector report?
Answer: Possible structural movement requiring further evaluation.
Rationale: Horizontal cracks may indicate structural pressure or foundation failure. Unlike
vertical hairline shrinkage cracks, horizontal cracking is more concerning and often
suggests lateral soil pressure or hydrostatic forces acting on the foundation wall.
,Q3. What is the minimum bearing length required for a floor joist on a wood sill plate
in wood frame construction?
Answer: 1½ inches.
Rationale: Building code requires a minimum of 1½ inches of bearing for floor joists on
wood or metal to ensure adequate load transfer. Insufficient bearing can lead to structural
failure.
Q4. A home with balloon framing is most likely to have which fire-safety deficiency?
Answer: Lack of fire-blocking at floor lines.
Rationale: Balloon framing creates open wall cavities that act as chimneys during a fire;
fire-blocking at each floor level is required to slow fire spread. This is a significant safety
concern identified during inspections.
Q5. A poured concrete foundation wall exhibits a vertical hairline crack with no
displacement. The most likely cause is:
Answer: Normal shrinkage during curing.
Rationale: Vertical, narrow, non-displaced cracks in new concrete are typically shrinkage
cracks from the curing process. These are not structural concerns and are common in newly
poured foundations.
Q6. What is the primary function of a sill plate in wood-framed construction?
Answer: To anchor the building to the foundation and support floor joists.
Rationale: The sill plate sits on the foundation, anchors the frame with bolts, and provides
bearing for floor joists. It is a critical structural connection point.
Q7. A foundation wall exhibits horizontal cracking accompanied by inward bowing.
What is the greatest concern?
Answer: Lateral soil pressure affecting structural integrity.
,Rationale: Horizontal cracks and wall displacement frequently indicate significant structural
stress caused by soil pressure. This condition requires professional engineering evaluation.
Q8. In New York, what is the minimum clearance required between the ground and
wood siding such as T-111?
Answer: 6 inches.
Rationale: A 6-inch clearance protects wood siding from moisture wicking, splash-back,
and termite access. This is a key code requirement to prevent wood decay and insect
infestation.
Q9. A wood deck ledger board is attached directly over siding rather than properly
flashed and secured to structural framing. What is the primary concern?
Answer: Potential deck failure and moisture intrusion.
Rationale: Improper ledger attachment is a major contributor to deck collapses. Moisture
intrusion may also accelerate hidden decay that compromises structural safety.
Q10. What is the most likely cause of a diagonal crack running from the corner of a
basement window?
Answer: Stress concentration at the window opening due to settlement or thermal
movement.
Rationale: Window corners are stress risers in foundation walls. Diagonal cracking from
these points often indicates differential settlement or thermal expansion/contraction
stresses.
Q11. During a crawlspace inspection, you observe softened, discolored floor joists.
What does this MOST likely indicate?
Answer: Wood decay caused by elevated moisture levels.
Rationale: Persistent dampness in a crawlspace promotes wood-decaying fungi; softened,
discolored wood is typical of rot, not surface staining. This condition requires further
evaluation.
, Q12. What is the function of a drainage tile installed at a building's foundation?
Answer: To collect and divert groundwater away from foundation footings.
Rationale: A drainage tile (French drain) is a pipe set in gravel running continuously along
the exterior of a building's foundation footings to collect groundwater and direct it away,
preventing hydrostatic pressure and water intrusion.
Q13. A foundation wall shows evidence of efflorescence. What does this indicate?
Answer: Moisture migration through the foundation material.
Rationale: Efflorescence forms when water dissolves salts within masonry and deposits
them on the surface as moisture evaporates. It indicates water penetration through the
foundation and should be documented.
Q14. Which condition in a crawlspace is MOST concerning?
Answer: Standing water.
Rationale: Moisture can cause mold growth, wood rot, and structural deterioration.
Standing water in a crawlspace requires immediate investigation and correction.
Q15. What should be reported when observing negative grading around a
foundation?
Answer: Drainage condition increasing moisture risk near foundation.
Rationale: Negative grading directs surface water toward the building, which can lead to
basement moisture problems and foundation damage. This should be reported as a
concern.
SECTION 2: ROOFING SYSTEMS (Questions 16-40)
Q16. A roof has missing shingles and visible water stains in the attic. What is the
MOST appropriate conclusion?
