If you own, are buying, or are financing commercial real estate in Portland, unreinforced masonry has probably come up in conversation. Maybe your insurance carrier is asking questions. Maybe a lender flagged it during underwriting. Maybe you've seen alarming posts on social media claiming the city is on the verge of fiscal collapse because of it.

The underlying issue is real. The alarm, in many cases, is overstated. Here's the factual picture.

What Is an Unreinforced Masonry Building?

Unreinforced masonry buildings — the historic brick commercial blocks that define Portland neighborhoods from the Central Eastside to Alberta Street — were constructed primarily before the 1960s. They were built in an era when seismic risk in the Pacific Northwest was poorly understood. Their defining structural characteristic: brick or block walls with little to no steel reinforcement, and in many cases no structural connection between the exterior walls and the floor or roof diaphragm.

When the Cascadia Subduction Zone produces its anticipated major earthquake — scientists put the probability at roughly 37% in the next 50 years — these buildings are among the most vulnerable structures in the region. FEMA classifies URMs as "typically the most vulnerable to earthquake damage," including the risk of partial or total collapse.

Portland began formally inventorying its URM stock in the 1990s. At various points, city documents have cited the total at 1,600 to more than 1,700 buildings, spread across virtually every established neighborhood — Old Town, the Central Eastside, Mississippi, Division, Alberta, St. Johns, Montavilla, and beyond. These buildings are the architectural DNA of Portland's commercial districts. They're also one of its most complicated asset classes.

The Regulatory Picture — And Where It's Headed

This is where a lot of the public narrative goes sideways, so it's worth being precise.

There is currently no blanket mandatory retrofit deadline applicable to most privately owned URM buildings in Portland. The city has been working toward one since 2014, when the Portland Bureau of Emergency Management launched the URM Seismic Retrofit Project. Working groups, policy committees, and public hearings have produced recommendations — but not a mandatory citywide program for the Class 3 and 4 buildings that make up roughly 94% of the inventory: the retail storefronts, apartment buildings, mixed-use blocks, and small commercial properties that most private owners hold.

A 2019 attempt to require exterior placards on all un-retrofitted URMs was struck down after a federal judge found the city's building list inaccurate, ruling it "falsely identifies some buildings as unreinforced and erroneously identified some buildings as constructed of URM, even in situations where such a statement is patently untrue." That set back the mandatory program significantly.

What does exist is Portland City Code Chapter 24.85, which establishes cost-triggered retrofit requirements: when a URM building undergoes renovation work exceeding specific per-square-foot thresholds, or a change of occupancy, seismic upgrades are triggered. The city updated this code in October 2025, with new ASCE 41 evaluation requirements taking effect January 1, 2029 — a date you'll hear cited frequently. That date is real and consequential, but it activates evaluation triggers tied to renovation permits above $175,000, not a stand-alone compliance deadline for all URM buildings.

The policy trajectory is clear: requirements will grow over time, not shrink. But the cliff many people are describing doesn't exist in the form they're describing it.

Where the Real Market Friction Lives

None of the above means URM buildings are easy to transact. The private market has moved faster than regulation, and the friction is significant.

Insurance is the first pressure point. Carriers have become increasingly reluctant to write or renew policies on un-retrofitted URMs, or they price those policies at substantial premiums. When insurance is expensive or unavailable, lenders freeze — because virtually every commercial loan covenant requires continuous property insurance. When lenders freeze, owners can't refinance, which accelerates financial stress.

Financing compounds the problem. When a structural engineer's estimated retrofit cost approaches or exceeds the building's current market value, no conventional lender will underwrite the acquisition. The math breaks. This is not hypothetical — it's a real constraint in the Portland market today, and it directly suppresses achievable sale prices on un-retrofitted buildings. Cash buyers, value-add investors with contractor relationships, and long-horizon owner-users become the realistic buyer pool.

Renovation triggers create another layer of complexity. Owners who have been deferring capital improvements may find that the moment they pull a permit for meaningful work, they've activated a seismic upgrade requirement that dramatically changes the project budget. Working with a structural engineer and code consultant before planning any improvements is not optional — it's essential.

What the Downtown Decline Adds to the Equation

Portland's commercial real estate market has experienced well-documented distress since 2020. The downtown CBD office vacancy rate reached 34.7% in Q4 2024, among the highest of any major American city center. The most dramatic illustration: the U.S. Bancorp Tower — Big Pink — sold in July 2025 for $45 million, against its 2015 sale price of approximately $372.5 million. That's an 88% decline in nominal value from one cycle to the next.

Big Pink is not a URM building, but its sale represents the broader pressure on Portland's commercial property values and tax base. Falling assessed values, widespread tax appeals, and compressed property tax revenue all reduce the financial resources available to city and county government — and reduce the cushion that property owners have to fund capital improvements like seismic retrofits.

The URM problem and the downtown office crisis are separate issues that interact. Owners facing declining rents and rising vacancies have fewer resources to address seismic compliance. That cycle is real and deserves attention.

If You Own a URM Building

The most important action right now is understanding your specific exposure — not the aggregate statistics, but your building's BDS classification, its permit trigger history, its current insurance status, and any outstanding compliance questions.

Before planning any renovation work, talk to a structural engineer familiar with Portland's Title 24.85 requirements. Know exactly what threshold you're working against, and what a seismic upgrade would actually cost for your specific building. That number will be project-specific — the range across the URM inventory is wide.

On the insurance front, don't assume your current policy will renew on the same terms. Have a direct conversation with your carrier about their URM posture, and if you're approaching renewal, get to the market early.

If you're considering selling, accurate pricing is everything. A URM listed at full market value equivalent will sit. The buyer pool is narrow and sophisticated — they know the cost-to-cure, and your asking price needs to reflect it. Getting ahead of the disclosure, rather than reacting to buyer discoveries during due diligence, is almost always the stronger position.

If You're Buying a URM Building

The opportunity is real, provided you price the risk correctly and have a clear capital strategy before you close.

Before writing an offer: get a structural engineer's assessment of actual retrofit scope and cost, have a direct conversation with insurance carriers — not just your broker, go to the market directly — and work with a lender who has actually funded URM acquisitions before. The discount you receive at acquisition must be calibrated against total cost-to-cure, not just the purchase price.

The buyers who will do well in this asset class are those who underwrite the full picture, acquire at the right basis, and have a realistic plan for either completing the retrofit or holding in a way that manages the regulatory and insurance exposure over time.

The Bottom Line

Portland's URM inventory is a genuine, documented challenge — for property owners, for lenders, and for the broader commercial market. The seismic risk is not hypothetical. The financing friction is real. The insurance difficulty is real. The regulatory environment is moving toward greater requirements over time.

What it is not, at least not yet, is the sudden universal crisis some are describing. The market for URM buildings is difficult, not dead. Transactions are happening. Informed buyers and motivated sellers are finding one another. The buildings that will suffer most are those whose owners are caught unprepared — unaware of their regulatory exposure, unaware of their insurance gaps, and pricing as though the URM designation is a footnote rather than a central underwriting factor.

Information and preparation are the answer. That's where we come in.



Cory Carlson is Principal Broker and President of Constant Commercial Real Estate, Inc., a regional boutique commercial brokerage and mortgage brokerage serving investors and business owners in Portland, Salem, and the greater Willamette Valley. Questions about a URM listing or acquisition? Reach us at constantcommercial.com.