Health Product Declaration® (HPD) is an international product content transparency declaration that discloses the chemical ingredients contained in a building material and the hazard information associated with those ingredients in a standardized format.
HPDs support product transparency in sustainable and healthy building projects and are used by architects, design teams, sustainability consultants, and investors to make more informed material selection decisions.
The HPD format is based on the HPD Open Standard, developed by the Health Product Declaration Collaborative (HPDC). This standard aims to ensure that product contents are disclosed according to specific reporting thresholds (e.g., 1000 ppm / 0.1% or 100 ppm, depending on project or certification requirements) and that the data is reported within a consistent and comparable framework.
An HPD is not a product safety certification. It does not claim that a product is “harmless”; rather, it demonstrates that the product’s contents have been disclosed transparently according to defined reporting rules.
Who Is HPD Important For?
HPD is particularly important for companies operating in the following areas: Building material manufacturers and suppliers Export-oriented companies Suppliers involved in projects pursuing certifications such as LEED or WELL Companies implementing ESG and sustainable procurement policies Investors and project teams adopting a healthy building approach HPDs can support the material transparency criteria of systems such as LEED, WELL Building Standard, and Living Building Challenge, contributing to the documentation requirements of these projects.
What Does the HPD Process Include?
Preparing an HPD is a technical and data-driven process. It typically includes: Creating a product ingredient inventory Collecting and verifying content data from suppliers Checking CAS numbers and ingredient identities Structuring the ingredient disclosure according to the thresholds defined in the HPD Open Standard (e.g., 1000 ppm / 100 ppm) Conducting hazard screening of ingredients against established hazard lists and reporting the results Preparing the declaration in the HPDC format Managing document revisions and version control HPDs report hazard classifications of ingredients. Since they do not assess exposure, they should be interpreted from a hazard information perspective rather than as a risk assessment..