The earthquake a Portland owner is told to prepare for is the one out at sea, and it is not the one that would do this city the most damage. A shallow fault comes in under the West Hills, turns along Burnside and carries on through the middle of downtown and out across the river, and the state’s own modeling puts the heavier loss on it rather than on the offshore event. That reordering is already inside how a building here is looked at.
Nate Jones is a CPCU-designated insurance broker and the founder of Wexford Insurance, LLC and Lessors Risk Guard Insurance. He places lessors risk and
commercial property coverage for owners who lease buildings to commercial tenants,
through a specialty panel writing in 48 states.
Reach him through the quote form or call 317-942-0549.
Last updated · Reviewed by Nate Jones, CPCU
The building stock
Historic unreinforced masonry and brick commercial buildings across the central city, alongside newer mid-rise offices and converted industrial warehouses.
Compact walkable central business district and neighborhood main streets, with industrial districts along the rivers.
What the weather and the ground do here
Cascadia subduction and crustal seismic exposure, persistent winter rain, and unreinforced masonry vulnerability in the older core.
Two things about that stock get missed, and owners are usually the last to hear either. The first is how wide the masonry class runs here: the city’s working definition takes in hollow clay tile and hollow concrete block alongside brick and stone, and it reaches from the late nineteenth century well into the postwar era, so a plain block building can sit in the same construction class as a Victorian storefront it resembles in no other way. The second is that a good deal of the converted stock is not masonry at the structure at all — the old wholesale blocks on the near east side are heavy timber behind their brick, which burns, values and rebuilds on entirely different terms, and the Old Town fronts carry decorative cast iron that hangs on the wall rather than holding it up. What an underwriter is trying to settle is which of those they are actually looking at, because nothing on a tax record tells them.
A paired panel for Portland. The left column runs through five local conditions: a shallow fault whose trace passes under the central city rather than sitting offshore, masonry an owner would not think to call masonry, a roof replacement that turns into structural work, an east-wind freeze reaching a building nobody is heating, and a repair timeline set by the region rather than by the site. The right column gives the insurance question each of those raises, taken row for row, and the closing line records which of the two earthquakes is the expensive one here.
What sits under a Portland placement
The coverage question it raises
A fault whose trace runs under the central city
Earthquake terms, quoted separately or not at all
Masonry an owner would not think to call masonry
What the walls actually are, before anyone asks
A roof replacement that turns into structural work
The upgrade cost that arrives with the repair
An east-wind freeze in a building nobody is heating
What your form allows once the heat goes off
A repair timeline the whole region is standing in
The months of lost rent you actually bought
The nearer earthquake is the more expensive one here.
The Portland side of the risk, and the insurance side of it.
The local law that binds you
This one is worth reading for when it arrives rather than for what it says. It does not turn up in the mail; it turns up inside work a landlord chooses to do and pays for on their own schedule. Replacing a roof covering is the ordinary door in and the one owners are least braced for, because a job scoped and financed as maintenance can come back carrying structural work at the wall-to-roof connection and the parapet line above it. While the project is still on paper that timing belongs to you. It stops belonging to you after a large loss, when the repair itself is the work that reaches the code and the upgrade lands on a claim instead of a capital plan — which is exactly the gap ordinance or law coverage is written for, and a limit worth checking before the question is live.
Seismic Strengthening of Unreinforced Masonry Bearing Wall Buildings
When any building alterations or repairs occur at an unreinforced masonry bearing wall building, all seismic hazards must be mitigated as set forth in Subsections 24.85.065 A. and B.
This duty is trigger-based rather than a standing mandate: it activates on alteration, repair, re-occupancy or change of use. It is not a requirement to retrofit every unreinforced-masonry building, and most owners do not currently carry that obligation.
Oregon has a view about what your policy does once space stops being occupied, and in this city that question keeps colliding with the weather. The freeze here is a Gorge event rather than a cold snap — an east wind pushing dense cold air out of the river gap underneath milder wet air — so it glazes the metro instead of loading the roofs, and the commercial loss it is documented for is water: supply lines and wet sprinkler risers letting go in space that has gone cold because nobody is in it. A suite sitting between tenants through one of those weeks is precisely where the season and the state’s wording meet, and that wording reads better during a lease than in the week after a riser opens up.
Oregon prints a vacancy provision in its own code, and it runs on the
building’s occupancy rather than on your conduct.
The statute and the exact words where there are any, together with whatever the
research recorded, are on the
Oregon page.
By what you own in Portland
What you own here is largely a question of which conversion you bought into. Retail is the street-facing run along the neighborhood main streets — Alberta, Mississippi, Hawthorne, Division, Sellwood — plus the taller downtown and West End blocks, and it is where the parapet and the sidewalk under it are one conversation. Office increasingly means a heavy-timber floor plate on the near east side let to design, advertising and small production tenants rather than a conventional tower floor. Mixed-use is the one carrying a habitational component, usually over a storefront, where fire separation and a residential occupancy change the questions outright. There is a page for each.
A coverage form does not know it is in Portland. The pages below take one line each and follow it from what sets it in motion to what it hands back at the end:
Cascadia or the fault under downtown — which one am I insuring against?
Both, though not in the order most owners assume. State geologists ran the two against this region’s building inventory and the shallow local fault produced the heavier loss by a wide margin, for the plain reason that it lies directly under the buildings while the offshore rupture is a long way off. The near one is far more violent and much briefer. A standard property form answers neither of them, so the live question is whether earthquake was bought at all, and on what terms.
Is a hollow block building really in the same class as a brick one?
It can be here, and it catches owners out. The city’s working definition of unreinforced masonry reaches hollow clay tile and hollow concrete block as well as brick and stone, across the long span of build years given above. A plain, unremarkable block building can therefore sit in the same construction class as a storefront it looks nothing like. If you have never thought of your building as masonry, establish that before an underwriter establishes it for you.
I am planning a re-roof. Is there something to sort out first?
Yes, and it is the least intuitive item on this page. On an unreinforced masonry building here, replacing most of a roof covering is one of the things that draws seismic work into the job — anchorage where the walls meet the roof, and the parapets standing above it. Work scoped as maintenance comes back as structural work, so the figure to establish is not the roofing bid. Get the engineering question answered while the job is still on paper.
Does appearing on a city masonry list put an obligation on me?
No. Inclusion has never created a duty on an owner, and it is not evidence either. The City published that record with its own warning attached — it made no guarantee of the accuracy and it named insurance companies among the parties who should not rely on it, which is an unusual thing for a municipality to say about its own document and worth taking at face value. What settles how your building is built is the building, read by an engineer who has been inside it.
Freezing rain shuts the metro down for days. What actually gets damaged?
Water, and it happens indoors. Because the ice arrives on an east wind out of the Gorge it glazes surfaces rather than piling onto roofs, the power tends to go with it, and the documented commercial loss is burst supply lines and wet sprinkler risers in space that went cold. The exposure is therefore an unheated suite, whether it is empty between tenants or a tenant simply turned the heat down and left. Settle in the lease who is keeping it warm.
How long should the loss-of-rents limit run on a Portland building?
Longer than a repair estimate suggests, and the reason is local. That limit is really an assumption about duration, and after the near earthquake the constraint on rebuilding is regional rather than site-specific: the liquid fuel the whole metro runs on is concentrated in one strip of filled industrial ground along the lower river, holding days of supply rather than weeks. Contractors, deliveries and generators all draw on it. The real question is not what your repair costs but how long you sit waiting for it.
Sources
The chapter below is the City’s own publication of it, and the office beside it is where an Oregon license is checked. They answer different questions and both are worth opening:
Portland City Code 24.85.065 — the Seismic Strengthening of Unreinforced Masonry Bearing Wall Buildings duty quoted above, in the municipality’s own words
Send an address and whatever you know about the structure behind the facade — that is the question the rest of this page runs through. If you do not know, say so. That is a normal answer here, and establishing it is the first thing we would do.
