In April 2026, orange signs started appearing along the seawall between Alki and Don Armeni. A reader flagged the photos to West Seattle Blog, curious about what was going on underneath the concrete. Seattle Parks told the outlet the erosion happens in random spots, where suction pulls soil out from beneath the wall and leaves a hole behind. There were about twenty of them by the time crews started filling them, with a goal of finishing the whole stretch before that year's Memorial Day.

That seawall is the one everyone walks on. It belongs to the city, and when it fails, the Army Corps of Engineers and Seattle Parks are the ones sending crews and drafting repair plans. But walk two blocks south onto Beach Drive SW, and the water is held back by a different kind of wall entirely. Nobody from the city is coming to check on it. The homeowner owns it, permits it, and pays for it, and most buyers never ask a single question about it before they close.

That gap between what people assume about Alki's waterfront and what they actually own is the thing worth understanding before you write an offer or sign a listing agreement on Beach Drive.

Two Walls, One Beach

The seawall along the park is public infrastructure. It exists to protect the beach, the walking path, and the recreational use that makes Alki what it is, and its maintenance runs through Seattle Parks and, when the work is substantial enough, the U.S. Army Corps of Engineers under a project the Corps calls Sec. 103 Coastal Erosion Control. That's a formal federal program built to fund shoreline hardening on public land.

A private bulkhead does the same physical job on a much smaller scale. It's the retaining structure at the edge of a residential lot, and on Beach Drive it shows up in listing language often enough that it's worth learning to spot. One active listing for a Beach Drive parcel describes the site plainly as sitting on "a low-bank multi-tiered bulkhead lot." That phrase means the wall belongs to the house, not the neighborhood.

Here's the plain contrast, side by side:

The public wall got orange signs and a repair timeline within weeks of the problem surfacing. A private bulkhead in the same condition gets whatever attention the owner decides to give it, on whatever timeline the owner can afford, and it stays that way until someone buying the house asks the right question.

What Fixing It Right Actually Costs at Scale

The bidding history on the public Sec. 103 project gives a useful sense of scale, even though it covers the whole park stretch rather than a single residential lot. When the Army Corps put the work out to bid in 2019, the apparent low offer came in at just over $3.19 million, with the next two bidders landing between $4.4 million and $4.42 million.

That number belongs to a project sized for a much longer run of shoreline than any single Beach Drive parcel needs. The point isn't that a homeowner's bulkhead costs millions. It's that when shoreline work is engineered and permitted to code rather than patched informally, the price reflects real structural and regulatory weight, not a weekend concrete job. A bulkhead that's been quietly deteriorating for years is not a minor line item once it finally needs real attention.

Some Alki waterfront ownership goes even further than a bulkhead alone. The Dolphin, an eight-unit waterfront building on Alki Beach, holds roughly sixty-five feet of bulkheaded Puget Sound frontage along with primary and secondary tidelands and boat buoy rights. That's the fuller version of what private shoreline ownership can include here, and it comes with a fuller version of the maintenance obligation to match.

The Line in Form 17 That Starts the Conversation

Washington's standard seller disclosure form, known in the industry as Form 17, asks a direct question in its environmental section: are there any shorelines, wetlands, floodplains, or critical areas on the property. For a Beach Drive listing, that question is where the bulkhead conversation formally begins.

Under state law, a seller has to deliver a completed disclosure statement within five business days of mutual acceptance unless the buyer has waived that right in writing. Once a buyer receives it, they generally have three business days to walk away and get their earnest money back, unless they've already waived that window too. Answering "yes" to the shoreline question doesn't kill a deal. It starts the part of due diligence where the buyer finds out exactly what they're inheriting and how much of it is documented.

A seller who has permits, inspection records, or an engineer's report on the bulkhead is in a much stronger position at this point than one who doesn't. Silence on a shoreline question tends to make buyers dig harder, not less.

What Happens After You Say Yes

Because Alki sits inside Seattle city limits, bulkhead repairs go through the Seattle Department of Construction and Inspections, not King County. That distinction matters, since the two agencies run separate shoreline programs with separate rules, and a homeowner who searches for county permitting guidance will end up in the wrong process entirely.

SDCI's shoreline district covers Puget Sound, Elliott Bay, and all land within two hundred feet of the water, which puts essentially every Beach Drive lot inside it. Depending on the scope of the work, a bulkhead project either qualifies for a shoreline exemption, a faster administrative approval SDCI issues when a project meets specific criteria, or it needs a full Shoreline Substantial Development Permit, which comes with a more thorough environmental review. Projects on a steep slope, which describes a fair number of Beach Drive's low-bank and bluff-adjacent lots, can also trigger a separate Environmentally Critical Areas review before the shoreline permit can move forward. SDCI bills for this work by the hour once an application is accepted, with an initial minimum fee due at submission.

None of this is unusual or punitive. It's simply what governs any substantial repair on Seattle's shoreline, public or private. The practical takeaway is that a bulkhead repair on Beach Drive is rarely a same-week fix. It's a permitted project with its own timeline, and that timeline should factor into how a buyer thinks about a home that needs the work done, or how a seller thinks about doing it before listing.

What to Gather Before You List, and What to Ask Before You Offer

If you're selling a Beach Drive property with a private bulkhead, pull together anything that documents its condition and history before your listing goes live: prior SDCI exemption approvals or Shoreline Substantial Development Permits, any geotechnical or engineering reports if the lot sits on a steep slope, and receipts for past repair work. A well-documented bulkhead is a selling point. An undocumented one invites a buyer's imagination to fill in the gaps.

If you're buying, ask specifically whether the lot's bulkhead is privately owned, when it was last inspected or repaired, and whether any permits exist for that work. If the seller answers "don't know" to the Form 17 shoreline question, that's not automatically a red flag, but it's a reason to bring in your own inspector who understands shoreline structures specifically, not just a general home inspector.

A Few Questions We Hear Often

Does every home on Beach Drive have a private bulkhead? Not every parcel. Some sit higher above the water or share frontage differently. Listing language like "low-bank" or "bulkhead lot" is usually the clearest signal that the wall belongs to the property.

If the public seawall keeps failing, does that affect my property value? Not directly, since it's a separate structure with separate ownership. It's worth knowing about because it shows how much ongoing maintenance any shoreline structure in this area requires, engineered or not.

Does a bulkhead repair always require a full Shoreline Substantial Development Permit? Not always. Some projects qualify for a shoreline exemption through SDCI instead, depending on the scope of work. Steep slope lots may need an added Environmentally Critical Areas review regardless of which shoreline permit path applies.

Is this something I should ask my inspector about? Yes, and specifically. A general home inspection doesn't always cover shoreline structures in depth, so it's worth asking upfront whether a bulkhead assessment is included or needs to be arranged separately.

Waterfront on Alki is still one of the most sought-after settings in Seattle, and none of this changes that. It just means the due diligence looks a little different than it does two blocks inland. If you're weighing a Beach Drive property, whether you're the one selling it or the one about to make it yours, I'd rather walk you through exactly what you're taking on before you're under contract than after. Kelly Zuger knows this stretch of shoreline block by block. Let's Connect.