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Healthy Housing Principles (HHP) Certificate of Knowledge — Requirements & Free Practice

US · License preparation

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Healthy Housing Principles (HHP) Certificate of Knowledge

Foundational knowledge certificate addressing how housing conditions affect occupant health; earned by passing the HHP online examination and not a license to practice.

Licensing authority: Building Performance Institute, Inc. · Application information

Initial by examination
Healthy Housing Principles Exam
Authority
Issuer examination policy, not a state license-adoption finding.
Delivery
Open-book online; no proctor required; available any day and time from an internet-connected computer.
Grant
Pass the online knowledge exam; retrieve and print the certificate through the BPI Dashboard.
Preparation
Read the current scheme and Knowledge Testing List; use reference materials or optional training to prepare.
Prerequisites
None; formal training is not required.
Purchase
Pay for the exam and complete it within one year of purchase; each retake requires another exam fee.
Test Center
Optional BPI Test Center arrangements require contacting the local test center for scheduling.

Healthy Housing Principles Exam

Provider
Building Performance Institute, Inc.
Format
English, open-book online multiple-choice knowledge examination; no proctor required.
Exam questions
Total questions: 75.
Time limit
No time limit for the examination; complete it within one year of purchase.
Passing score
80% (as of January 1, 2026)
Examination outline
  • INTRODUCTION
    • The Foundations of Healthy Housing
    • Codes, Standards and Regulations
    • Equity & Vulnerable Populations
    • Community Context & Survey Data
  • KEEP IT CLEAN
    • Cleanliness and Health Impacts
    • Particle, Dust & Allergen Control
    • Cleaning Methods and Considerations
    • High-Bacteria Areas & Their Relevance
    • Entry Dust Control
    • Air & Mechanical Systems
    • Environmental & Occupant Practices
  • KEEP IT DRY
    • Moisture and Health Impacts
    • Moisture Sources
    • Moisture Transfer in Building Materials
    • Moisture and Temperature
    • Mold Growth Factors
    • Safe Mold Cleanup
    • Building Moisture Controls
    • Mechanical Moisture Control Systems
    • Occupant Moisture Control Practices
  • KEEP IT PEST-FREE
    • Pest Indicators & Health Impacts
    • Integrated Pest Management Principles
    • Pesticide Awareness & Monitoring Practices
    • Effective Pest-Management Methods
    • Actions for a Pest-Free Environment
  • KEEP IT CONTAMINANT-FREE
    • Contaminants and Health Impacts
    • Sources & Exposure Pathways
    • Product Safety & Ventilation Strategies
    • Healthy-Exposure-Reduction Actions
  • KEEP IT SAFE
    • Safety and Health Impacts
    • Poisoning Hazards
    • Fire and CO Safety
    • Falls, Tip-Overs & Choking
    • Electrical Safety
    • Safe Access and Mobility
    • Additional Safety Items
  • KEEP IT VENTILATED
    • Ventilation and Health Impacts
    • Ventilation Principles and Systems
    • Combustion By-Product Risks
    • Filtration & Air Cleaning
    • Airflow Improvements in Homes
  • KEEP IT COMFORTABLE
    • Thermal Comfort and Health Impacts
    • Heat Transfer & Comfort
    • Air Sealing & Insulation
    • Energy Insecurity
    • Comfort Strategies
  • KEEP IT MAINTAINED
    • Maintenance Health Impacts and Basics
    • Routine Maintenance Needs
    • Lead Hazards
    • Asbestos
    • Radon
    • Sewer Gas
Examination sources