In late 2024, ASTM International published a new standard for commercial real estate due diligence. It is arguably the most significant development in how lenders, buyers, and consultants should be assessing property risk in years. Most commercial credit officers and underwriters have never heard of it.
That is not an exaggeration. It is an accurate description of where the market currently sits. The standard exists. The framework is documented. The methodology is sound. And the industry, for the most part, is still doing things the way it has always done them.
Understanding why that gap exists, and what it costs, starts with understanding what the standard actually requires and who it is designed to help.
What ASTM E3429-24 Is and Who It Is For
The ASTM Property Resilience Assessment standard, formally designated E3429-24, establishes a three-stage process for evaluating natural hazard exposure, vulnerability, and resilience options for commercial properties. It was developed over two to three years by a committee of roughly 100 professionals drawn from across the industry, including owners, lenders, engineers, architects, and environmental consultants.
Albert Slap, founder of RiskFootprint™, sat on that committee. He has spent the better part of a decade arguing that the standard commercial due diligence package, an appraisal, a Phase One Environmental Site Assessment, a FEMA flood map, and sometimes a basic earthquake score, leaves out most of the natural hazard risk that can actually damage or destroy a building. The ASTM standard gives the industry a formal framework for doing better. “Unfortunately, most commercial credit officers and underwriters have never heard of it,” Slap says.
The standard is designed to serve three groups: owners, operators, and investors; bank and non-bank lenders; and consultants including architects, engineers, and environmental professionals. Each group engages with it differently depending on their role and appetite for depth of analysis.
Stage one is exposure assessment: what hazards is the property exposed to, across what range of categories? This is the broadest stage, and for some lenders it may be the only one they need. A portfolio stress test, for example, might require only exposure data to identify which assets warrant closer scrutiny.
Stage two moves from exposure to vulnerability and estimated damage loss. A building exposed to flooding is not the same as a building vulnerable to flooding. The difference lies in factors like first-floor elevation, construction materials, and the specific flood mechanism, whether riverine, coastal, or rainfall-driven. This stage can be completed largely from the desktop using hazard models and building-level data that are now widely available.
Stage three is the feasibility analysis: what resilience measures are available, what do they cost in rough order of magnitude, and what is the return on investment? This is where desktop analysis gives way to on-site assessment by engineers and architects, and where the output becomes an actionable plan rather than a risk profile.
Not every transaction requires all three stages. But the framework gives lenders, buyers, and consultants a structured basis for deciding how deep to go, and a documented process for the decisions made along the way.
Why Most Lenders Are Still Not Using It
The gap between the existence of a best-practice standard and its adoption in the market is not unusual. What makes this particular gap consequential is the scale of exposure it leaves unexamined.
The standard commercial due diligence package has remained largely static for decades. It was assembled in an era when natural hazard data was expensive, slow to produce, and required specialist expertise to interpret. None of those constraints apply today. A comprehensive property-level risk assessment across 34 or more hazard categories is available in seconds, for a few hundred dollars, drawing from flood models used by global reinsurers, historical damage data from FEMA’s National Risk Index, and first-floor elevation estimates generated from Google Street View imagery using machine learning.
The data is not the problem. Habit is. And the habits of commercial lending change slowly unless something forces the issue.
Several things are beginning to force it. Courts are increasingly treating extreme weather events as foreseeable rather than exceptional, raising the standard of care for professionals who could have identified a risk and didn’t. Regulators and GSEs including Fannie Mae and Freddie Mac were beginning to integrate expected annual loss data into loan pricing before public access to FEMA’s National Risk Index was restricted last year. And insurance markets are repricing, or in some cases withdrawing entirely from, property categories where hazard exposure has historically been underestimated.
What the Standard Makes Possible at the Deal Level
One of the less appreciated aspects of ASTM E3429-24 is what it enables beyond risk identification. The third stage, which assesses the feasibility and return on investment of resilience measures, gives lenders a structured basis for pre- and post-closing conditions that go beyond the conventional property condition assessment.
The conventional approach flags a deteriorating roof and requires replacement. The property resilience assessment approach asks whether that replacement should be a like-kind repair or an upgrade, and what the difference in wind resistance, expected annual loss, and insurance cost looks like over the life of the loan. That is a more precise conversation, and one that the data now makes possible.
Some borrowers are already seeing the benefit. A newly constructed hotel on the Texas Gulf Coast recently secured a takeout loan with a lower interest rate and reduced insurance premiums after a RiskFootprint™ assessment validated the building’s construction quality against modeled wind and flood risk. The assessment did not just identify risk. It documented resilience, and the lender priced that accordingly.
The Convergence of Standards
ASTM E3429-24 does not exist in isolation. Shortly after its publication, the U.S. Green Building Council released LEED version 5, which incorporated property resilience assessment requirements drawing heavily on the ASTM standard. Any project pursuing LEED certification now has a formal mandate to conduct the kind of hazard assessment the ASTM standard outlines.
For lenders whose borrowers are developing or acquiring LEED-certified properties, this creates a direct connection between green building certification and natural hazard due diligence. Sustainability and resilience, which have sometimes been treated as separate conversations, are being formally linked.
The industry is at the beginning of a transition that has clear direction. The standards are in place. The data is available. The legal and regulatory environment is moving toward treating comprehensive hazard assessment as an expectation rather than an option. The question for lenders and their credit teams is not whether this shift is coming. It is whether they are positioned to get ahead of it.
About RiskFootprint™ RiskFootprint™ is a property resilience assessment platform providing science-driven hazard analysis across 34+ natural hazard categories for commercial and residential clients. Built to align with ASTM Property Resilience Assessment methodologies, it helps building owners, purchasers, lenders, and due diligence professionals identify and evaluate risk at the deal level.
Disclaimer: This article is intended for informational purposes only and does not constitute legal, financial, or investment advice. The views and opinions expressed herein reflect those of the individuals quoted and do not represent an endorsement of any company, product, or service mentioned. Readers should conduct their own due diligence and consult qualified professionals before making any investment decisions.
